4 research outputs found

    Wst臋pne pr贸by konstrukcji bibliotek peptydowych jako narz臋dzia w diagnostyce nowotwor贸w z艂o艣liwych tarczycy

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    Introduction: Cancer of thyroid gland is the most common malignancy of the endocrine system. The treatment improvement could be achieved by early diagnosis. The aim of the study was to identify cancer specific antigenes with use of peptide libraries. Material and methods: The material from 6 patients with thyroid cancer (4 with papillary cancer, 1 with follicular cancer and 1 with oxyphilic tumor) were analyzed. It was performed with use of lipophylic peptide libraries by direct comparison of staining of specimens prepared from normal and malignant tissue. Results: Preliminary results confirm practical value of peptide libraries in early diagnostics of thyroid cancer. Conclusions: It is important to optimize construction of peptide libraries by using different staining agents hydrolyzed by proteases.Wst臋p: Nowotwory z艂o艣liwe tarczycy nale偶膮 do najcz臋stszych nowotwor贸w z艂o艣liwych uk艂adu endokrynnego. Poprawa wynik贸w leczenia wi膮偶e si臋 z post臋pem wczesnej diagnostyki raka. Celem niniejszych bada艅 jest poszukiwanie wska藕nik贸w nowotworowych za pomoc膮 bibliotek peptydowych umieszczonych na pod艂o偶u z bibu艂y. Materia艂 i metody: Analizie poddano tkanki pobrane od 6 pacjent贸w: 4 z rakiem brodawkowatym tarczycy, 1 z nowotworem p臋cherzykowym oraz 1 pacjenta z rakiem oksyfilnym. Badania wykonywano z wykorzystaniem bibliotek peptydowych lipofilowych, por贸wnuj膮c tkank臋 zdrow膮 i chor膮 oraz oceniaj膮c zmian臋 zabarwienia w poszczeg贸lnych bibliotekach. Wyniki: Wst臋pne wyniki wskazuj膮, 偶e biblioteki peptydowe mo偶na zastosowa膰 w diagnostyce nowotwor贸w tarczycy. Wnioski: Niezb臋dna jest optymalizacja budowy bibliotek peptydowych, gdzie konieczne jest zastosowanie innego barwnika hydrolizowanego przez proteazy

    Clinical significance of oxidation and acetylation genetic polymorphism in patients with hyperthyreosis

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    Introduction: The relationship between genetically determined polymorphic oxidation and acetylation and susceptibility to some disease was aroused much interest. The aim of our study was to evaluate whether patients with hyperthyreosis differ from healthy persons in their ability to oxidize sparteine and acetylate sulphadimidine as model drugs. Oxidation and acetylation were estimated in 48 patients with hiperthyreosis. Material and methods: The control group consisted of 160 healthy volunteers for comparison of oxidation phenotype and 60 healthy volunteers for comparison of acetylation phenotype. The phenotyping of oxidation revealed two distinct populations among 40 patients with hyperthyreosis: 38 persons (95%) were extensive metabolizers (EM) of sparteine and 2 persons (5%) was poor metabolizers (PM). In 160 healthy persons (91.2%) were EM and 14 persons (8.8%) were PM. The difference between frequency distribution of PM and EM in healthy persons and in patients with hyperthyreosis was not statistically significant. Results: The phenotyping of acetylation showed among 48 patients with hyperthyreosis 8 persons (13%) were rapid acetylators (RA) and 40 persons (87%) were slow acetylators (SA). In 60 healthy volunteers the phenotype of rapid acetylation was observed in 31 persons (51%) and slow acetylation in 29 persons (49%). Relative risk (odds ratio) of development of thyroid diseases was 5.34 times higher for SA in comparison to RA. The prevalence of SA among patients with hyperthyreosis in comparison to healthy volunteers was statistically significant (p < 0.0002). Conclusions: The results of our study may suggest that slow acetylation phenotype is associated with increased risk of the development of hyperthyreosis.Wst臋p: Badania nad udzia艂em czynnik贸w genetycznych w powstawaniu niekt贸rych chor贸b prowadzi si臋 w coraz szerszym zakresie. Celem pracy by艂o stwierdzenie, czy mi臋dzy grup膮 chorych na nadczynno艣膰 tarczycy a grup膮 kontroln膮 zdrowych ochotnik贸w istnieje r贸偶nica w zdolno艣ci utleniania sparteiny i acetylacji sulfadimidyny jako lek贸w modelowych. Materia艂 i metody: Badaniami obj臋to 268 os贸b. W tej grupie 48 os贸b by艂o chorych na nadczynno艣膰 tarczycy. Grup臋 kontroln膮 dla fenotypu oksydacji stanowi艂o 160 zdrowych ochotnik贸w, natomiast dla fenotypu acetylacji 60 os贸b zdrowych. Wyniki: W艣r贸d 40 chorych z nadczynno艣ci膮 tarczycy stwierdzono 38 (95%) ekstensywnych metabolizer贸w (EM, extensive metabolizers) i 2 (5%) s艂abych metabolizer贸w (PM, poor metabolizers) sparteiny. W grupie kontrolnej 160 ochotnik贸w, 146 (91,2%) okaza艂o si臋 EM, a 14 (8,8%) - PM. Niewielka przewaga cz臋sto艣ci wyst臋powania PM w艣r贸d pacjent贸w z nadczynno艣ci膮 tarczycy w por贸wnaniu z grup膮 os贸b zdrowych nie by艂a statystycznie istotna. W艣r贸d 48 chorych na nadczynno艣膰 tarczycy wyr贸偶niono 13% szybkich acetylator贸w (RA, rapid acetylators) (8 os贸b) i 87% wolnych acetylator贸w (SA, slow acetylators) (40 os贸b). Natomiast u 60 zdrowych ochotnik贸w stwierdzono 51% RA (31 os贸b) i 49% SA (29 os贸b). Odsetek szybkich i wolnych acetylator贸w w grupie chorych z nadczynno艣ci膮 tarczycy r贸偶ni艂 si臋 w spos贸b statystycznie istotny w por贸wnaniu z odsetkiem w grupie os贸b zdrowych (p < 0,0002). Wzgl臋dne ryzyko zachorowania na nadczynno艣膰 tarczycy, wyra偶one za pomoc膮 proporcji szans (OR, odds ratio), jest ponad 5 razy wi臋ksze dla wolnych ni偶 dla szybkich acetylator贸w. Wnioski: Wyniki niniejszych bada艅 mog膮 sugerowa膰, 偶e osoby z fenotypem wolnej acetylacji s膮 predysponowane do zapadalno艣ci na nadczynno艣膰 tarczycy

    Application of Na12[WZn3(H2O)2][ZnW9O34)2] polyoxometalate as a catalyst in oxidation of alcohols under microwave irradiation

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    In this paper the results of oxidation of alcohols under microwave irradiation using Na12[WZn3(H2O)2][ZnW9O32)2] (ZnPOM) as a catalyst was shown. These reactions were conducted in microwave high-pressure reactor using acetonitryl as organic solvent and 30% hydrogen peroxide as oxidant. Under reaction conditions primary alcohols were oxidized to appropriate acids, secondary alcohols were oxidized to ketones. In case of diols it was found that secondary 鈥揙H groups were oxidized in the first instance
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