o:8482 Uticaj biljnih polifenola na aktivaciju trombocita i njihovu agregaciju sa ćelijama endotela, krvnim i malignim ćelijama doktorska disertacija The impact of plant plyphenols on platelet activation and their aggregation with endothelial, blood and malignant cels : doctoral dissertation sr Trombociti imaju važnu ulogu u patogenezi kardiovaskularnih i malignih bolesti. Uticaj biološki aktivnih sastojaka namirnica na aktivaciju trombocita i njihovu heterotipsku agregaciju predstavlja jedan od potencijalnih mehanizama njihove uloge u prevenciji hroničnih bolesti i promociji zdravlja. Rezultati interventnih dijetarnih studija potvrđuju uticaj polifenola na funkciju trombocita. Protočna citometrija predstavlja jednu od najoptimalnijih metoda ispitivanja uticaja dijetarnih sastojaka na trombocite. Osnovni cilj doktorske disertacije je ispitivanje uticaja biljaka koje sadrže polifenole na aktivaciju trombocita i njihovu agregaciju sa leukocitima, u in vitro eksperimentalnim uslovima, kao i nakon konzumacije namirnica biljnog porekla, koje predstavljaju dijetarni izvor polifenola. Primenom protočne citometrije pokazano je da u in vitro eksperimentalnim uslovima svi ispitivani ekstrakti (ekstrakt koprive, mirođije, šarplaninskog čaja, kelja, nara, japanske jabuke i aronije) pokazuju efekte su na neki od analiziranih parametara aktivacije trombocita i njihove agregacije sa monocitima i neutrofilima, kod zdravih ispitanika ili ispitanika sa metaboličkim sindromom. Na najveći broj parametara delovali su ekstrakti kelja i mirođije, a u tom smislu najmanje izraženo delovanje pokazao je ekstrakt nara. Ispitivanjem delovanja metabolita pokazano je da svi ispitivani metaboliti: kvercetin-3-glukuronid, 3’-metil-kvercetin-3-glukuronid, kvercetin-3’-sulfat i sulforafan-cistein-glicin pokazuju efekte na neki od parametara aktivacije trombocita i njihove agregacije sa monocitima i neutrofilima, kod zdravih ispitanika ili ispitanika sa metaboličkim sindromom. Sulforafan-cistein-glicin delovao je na veći broj parametara u odnosu na metabolite kvercetina. Delovanje 3’-metil-kvercetin-3-glukuronida bilo je izraženije u odnosu na delovanje ostalih metabolita kvercetina. Nakon ispitivanja delovanja jednokratne konzumacije namirnica koje predstavljaju dijetarni izvor polifenola pokazano je da konzumacija soka od aronije kod zdravih ispitanika dovodi do smanjenja aktivacije trombocita i to smanjenjem procenta Pselektin- pozitivnih trombocita u bazalnim uslovima, kao i smanjenjem procenta i gustine ovog adhezionog receptora nakon ex vivo delovanja adenozin-difosfata i arahidonske kiseline kao agonista... Platelets have an important role in the pathogenesis of the cardiovascular and malignant diseases. The impact of bioactive dietary compounds on platelet activation and their aggregation with leukocytes is one of the potential mechanisms of their role in health promotion and the prevention of chronic diseases. The results of dietary intervention studies confirm the effect of polyphenols on platelet function. Flow cytometry is considered to be one of the most advantageous methods in investigation of dietary compounds effects on platelets. The main aim of this study was the evaluation of potential effects of polyphenol - rich plants on platelets activation and their aggregation with leukocytes, in in vitro experimental setting and after the consumption of plant foods, as dietary sources of polyphenols. All investigated plant extracts (extracts of nettle, dill, mountain tea, kale, pomegranate, persimmon and chokeberry) affected some of the analyzed parameters of platelets activation and their aggregation with monocytes and neutrophils, in healthy subjects or subjects with metabolic syndrome The most effective were kale and dill extracts, influencing most of the parameters evaluated by flow cytometry, while the least effective was pomegranate extract. All investigated metabolites: quercetin - 3 - glucuronide, 3' - methyl - quercetin - 3 - glucuronide, quercetin - 3' - sulfate and sulforaphane - cysteine - glycine have shown the effects on some parameters of platelet activation and their aggregation with monocytes and neutrophils, in healthy subjects or subjects with metabolic syndrome. The most effective was sulforaphane - cysteine - glycine, influencing most of the analyzed parameters . 3' - methyl - quercetin - 3 - glucuronide showed more pronounced effects compared to the effects of other metabolites of quercetin. Dietary intervention studies investigating the effects of single consumption of plant-based foods as dietary sources of polyphenols have shown that consumption of chokeberry juice beneficially influenced platelet activation status by reducing the percentage of P - selectin - positive platelets under basal conditions, as well as reducing he percentage and density of P - selectin after ex vivo agonistic action of adenosine diphosphate and arachidonic acid... Farmacija - Hemija hrane i dijetetskih proizvoda / Pharmacy- Chemistry of Food and Dietetic Products Datum odbrane : 16.07.2013 polifenoli; trombociti; protočna citometrija; aktivacija; agregacija polyphenols; platelets; flow cytometry; activation; aggregation 612.392.7:547.56:611.018.52(043.3) yes 44887567 91552101 1361 91552100 44887567 2014-11-06T13:28:05.053Z 45 no 46 mentor Aleksandra I., 1975- Konić-Ristić 2013 63 mentor Ivan, 1959- Stanković 2013 63 član komisije Ivanka, 1945- Miletić 2013 63 član komisije Katarina Šavikin 2013 63 član komisije Marija, 1958- Glibetić 2013 63 član komisije Tatjana Srdić-Rajić 2013 PDF/A (145 listova) 4873963 http://phaidrabg.bg.ac.rs/o:8482 no yes 4 2014-11-06T13:28:05.320Z 70 11 1067094 1067103 Farmacija - Hemija hrane i dijetetskih proizvoda / Pharmacy- Chemistry of Food and Dietetic Products polifenoli; trombociti; protočna citometrija; aktivacija; agregacija polyphenols; platelets; flow cytometry; activation; aggregation 612.392.7:547.56:611.018.52(043.3) 1738 11A13 2013