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Reološko vrednotenje vodnih sistemov ksantan in semenske sluzi rožičevca = Rheological evaluation of aqueous sistems of xanthan gum and locust bean gum : diplomska nalogaČepon, PolonaOdkritje receptorja za aktivacijo jedrnega dejavnika kapa B (RANK), njegovega liganda (RANKL) in osteoprotegerina (OPG) iz naddruzine dejavnikov tumorske nekroze, je pripomoglo k boljsemu razumevanju ... uravnavanja osteoklastogeneze. Vezava RANKL na RANK povzroèi niz kaskadnih reakcij, katerih rezultat je nastajanje in aktivacija osteoklastov ter pospesena razgradnja kostnega tkiva.OPG pa je topni receptor, ki z vezavo na RANKL prepreèi njegove uèinke. Zaradi vpletanja teh treh molekul v kostno remodelacijo, bi prisotnost polimorfizmov v navedenih genih lahko privedla do motenj v sestavi kostnega tkiva, zato jih stejemo med kandidatne gene, ki bi lahko vplivali na razvoj osteoporoze. Nas namen je bil ugotoviti prisotnost polimorfizmov med -1843 in-1277 mestom (èetrti odsek) v promotorju TNFSF11 gena, ki kodira RANKL. Ugotoviti smo zeleli njihovo povezanost z BMD in s tem vpliv na razvoj osteoporoze. V studijo je bilo vkljuèenih 117 nakljuèno izbranih preiskovank in 68 osteoporoznih bolnic. Z verizno reakcijo s polimerazo (PCR) smo pomnozili omenjeni odsek promotorja. Desetim nakljuèno izbranim vzorcem smo s sekvenèno analizo doloèili nukleotidno zaporedje. Po primerjavi z objavljeno sekvenco (GenBank, Accession Number AF333234) smo ugotovili prisotnost enonukleotidnega polimorfizma (SNP)-1594G>A. V nadaljevanju smo nato razvili enostavnejso metodo za njegovo detekcijo. Z metodo nepopolno prilegajoèih oligonukleotidnih zaèetnikov (angl. mismatch primers) smo najprej pomnozili krajsi odsek preuèevanega dela promotorja, ki se vedno nosi omenjeni polimorfizem. Pomnozene odseke smo nato inkubirali ob prisotnosti restrikcijske endonukleaze BfaI. Le-ta prepozna normalno zaporedje DNA in ga cepi. Na podlagi analize dolzin restrikcijskih fragmentov (RFLP) smo preiskovankam doloèili genotip. Prisotnost ugotovljenega polimorfizma smo nasli le pri dveh preiskovankah, iz èesar sklepamo, da je preiskovani del promotorja dokaj konzervativen in v preiskovani skupini ni povezan z BMD, torej ne vpliva na razvoj osteoporoze.Type of material - undergraduate thesisPublication and manufacture - Ljubljana : [Čepon, P.], 2005Language - slovenianCOBISS.SI-ID - 1716081
Author
Čepon, Polona
Other authors
Gašperlin, Mirjana |
Baumgartner, Saša, 1969-2015
Topics
polisaharidi |
semenska sluz rožičevca |
reologija |
ksantan
Library | Call number – location, accession no. ... | Copy status |
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Faculty of Pharmacy, Lj. | Knjižnica dp 615 Čepon Polona Reološko IN: 0008257 |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Čepon, Polona | |
Gašperlin, Mirjana | 11789 |
Baumgartner, Saša, 1969-2015 | 15104 |
Source: Personal bibliographies
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