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master's thesis
Utjecaj željeza na broj vrčastih stanica u tankom crijevu šarana Cyprinus carpio Linnaeus, 1758
Zagreb: University of Zagreb, Faculty of Science, 2014. urn:nbn:hr:217:719090
Krpan, Luka
University of Zagreb
Faculty of Science
Department of Biology

Institutional repository: Repository of the Faculty of Science

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Krpan, L. (2014). Utjecaj željeza na broj vrčastih stanica u tankom crijevu šarana Cyprinus carpio Linnaeus, 1758 (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:719090

Krpan, Luka. "Utjecaj željeza na broj vrčastih stanica u tankom crijevu šarana Cyprinus carpio Linnaeus, 1758." Master's thesis, University of Zagreb, Faculty of Science, 2014. https://urn.nsk.hr/urn:nbn:hr:217:719090

Krpan, Luka. "Utjecaj željeza na broj vrčastih stanica u tankom crijevu šarana Cyprinus carpio Linnaeus, 1758." Master's thesis, University of Zagreb, Faculty of Science, 2014. https://urn.nsk.hr/urn:nbn:hr:217:719090

Krpan, L. (2014). 'Utjecaj željeza na broj vrčastih stanica u tankom crijevu šarana Cyprinus carpio Linnaeus, 1758', Master's thesis, University of Zagreb, Faculty of Science, accessed 25 November 2024, https://urn.nsk.hr/urn:nbn:hr:217:719090

Krpan L. Utjecaj željeza na broj vrčastih stanica u tankom crijevu šarana Cyprinus carpio Linnaeus, 1758 [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2014 [cited 2024 November 25] Available at: https://urn.nsk.hr/urn:nbn:hr:217:719090

L. Krpan, "Utjecaj željeza na broj vrčastih stanica u tankom crijevu šarana Cyprinus carpio Linnaeus, 1758", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:217:719090

Metadata
TitleUtjecaj željeza na broj vrčastih stanica u tankom crijevu šarana Cyprinus carpio Linnaeus, 1758
Title (english)Influence of iron on the number of goblet cells in the small intestine of carp Cyprinus carpio Linnaeus, 1758
AuthorLuka Krpan
MentorGordana Lacković-Venturin (mentor)
Committee memberGordana Lacković-Venturin (član povjerenstva)
Committee memberZoran Tadić (član povjerenstva)
Committee memberSven Jelaska (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Biology)
Zagreb
Defense date and country2014, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Iako je željezo esencijalni metal potreban za normalno funkcioniranje i opstanak životinjskog organizma, spada u skupinu teških metala koji zbog svojih svojstava bioakumulacije i postojanosti imaju i toksikološki učinak. U ovom istraživanju životinje su izložene najvećoj dopuštenoj koncentraciji željeza u vodi tijekom perioda od 14 i 105 dana. Laboratorijska analiza obuhvaćala je praćenje utjecaja dvovalentnog i trovalentnog željeza na broj vrčastih stanica u tankom crijevu šarana Cyprinus carpio Linnaeus, 1758. Brojnost i razlika u sastavu sekreta vrčastih stanica u epitelu tankog crijeva dokazana je histokemijskom Alcijan-PAS metodom. Rezultati pokazuju da dugotrajna izloženost željezu utječe na povećanje broja AB pozitivnih vrčastih stanica koje izlučuju kiseli sekret, u kojem prevladavaju sijalomucini i sulfomucini. Upravo taj tip sekreta dodatno povećava viskoznost izlučenog mukusa čime se povećava zaštitna uloga sekreta u probavilu. Dobiveni rezultati ukazuju da dugotrajna izloženost maksimalno dopuštenoj koncentraciji željeza u vodi može dovesti do značajnih morfoloških i fizioloških promjena u tankom crijevu što upućuje na daljnja istraživanja ovih promjena i njihovih posljedica na organizam.
Abstract (english)
Although iron is an essential metal needed for normal functioning and survival of the animal organism, it is a part of a heavy metal group of elements which have properties of bioaccumulation and persistency and have a toxic effect. In this research the animals were subjected to the highest allowed concentration of iron in the water for a period of 14 and 105 days. The laboratory analysis was comprised of monitoring the influence of bivalent and trivalent iron on the number of goblet cells in the small intestine of carp Cyprinus carpio Linnaeus, 1758. The number and the difference in the composition of the goblet cell mucus in the epithelium of the small intestine was proved with a histochemical Alcian-PAS method. The results show that long-term exposure to iron influences the increase of AB positive goblet cells that secret acid mucus, in which sialomucins and sulfomucins prevail. It is that type of mucins that additionally enhances the viscosity of the secreted mucus which enhances its protective role in the intestine. The results show that long-term exposure to the maximal allowed concentration of iron in water can lead to significant morphological and physiological changes in the small intestine which suggest further studies of these changes and their consequences should be made.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:719090
Study programmeTitle: Biology; specializations in: Ecology
Course: Ecology
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra biologije (magistar/magistra biologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2018-04-26 10:00:27