Access restricted to higher education institution's students and staff
master's thesis
Agregacijska svojstva odabranih humanih patogena koji se prenose hranom

Boris Stošić (2016)
Metadata
TitleAgregacijska svojstva odabranih humanih patogena koji se prenose hranom
AuthorBoris Stošić
Mentor(s)Ivana Gobin (thesis advisor)
Abstract
Agregacijska svojstva mogu patogenim bakterijama poslužiti kao bitan faktor virulencije. Patogene bakterije mogu preživjeti u kontaminiranoj hrani tvoreći agregate i biofilmove, a istim mehanizmom ukoliko se u određenim uvjetima nađu u organizmu i uzrokovati bolest. Iz tog razloga su se u ovom radu ispitivala autoagregacijska i koagregacijska svojstva tri česta humana patogena koja se prenose hranom: enterohemoragična Escherichia coli (EHEC) O157, Listeria monocytogenes i Campylobacter jejuni. Rezultati pokazuju da sve tri bakterije imaju izraženu i relativno sporu ˗ kroz 24 sata izraženu ˗ sposobnost autoagregacije (> 85 %). Svojstvo agregacije je naročito izraženo kod EHEC O157, koja ima dominantnu ulogu i u koagregaciji sa druge dvije bakterije. Sve ispitivane bakterije pokazuju visoki postotak koagregacije u kombinaciji po dvije bakterije dok kombinacije po tri bakterije pokazuju slabu koagregaciju. Nadalje, bakterije kultivirane u bujonu jače agregiraju od bakterija kultiviranih na agaru. Zaključno, ispitivane bakterije pokazuju izraženo svojstvo agregacije kao i snažnu koagregaciju kada se nalaze u kombinaciji po dvije bakterije.
Keywordsbacterial aggregation human foodborne pathogens
Committee MembersDarinka Vučković (committee chairperson)
Dalibor Broznić (committee member)
Ivana Gobin (committee member)
GranterSveučilište u Rijeci
Medicinski fakultet
Lower level organizational unitsKatedra za mikrobiologiju i parazitologiju
PlaceRijeka
StateCroatia
Scientific field, discipline, subdisciplineBIOMEDICINE AND HEALTHCARE
Clinical Medical Sciences
Study programme typeuniversity
Study levelgraduate
Study programmeStudy of Sanitary Engineering
Academic title abbreviationmag. sanit. ing.
Genremaster's thesis
Language Croatian
Defense date2016-07-14
Parallel abstract (English)
Aggregation properties of pathogenic bacteria can be an important virulence factor. Pathogenic bacteria can survive in contaminated food by forming aggregates and biofilms, and if in certain conditions found in the body can cause disease using the same mechanism. For that reason, this research investigates aggregation properties of three common human pathogens that are transmitted by food: enterohaemorrhagic Escherichia coli (EHEC) O157, Listeria monocytogenes, and Campylobacter jejuni. The results show that all three bacteria have a strong and relatively slow ˗ expressed for 24 hour periods ˗ autoaggregation ability (> 85%). The property of aggregation is especially expressed by EHEC O157, which also has a dominant role in coaggregation with the other two bacteria. All tested bacteria show a high percentage of coaggregation in two bacteria combinations, while the combinations of three bacteria showed weak coaggregation. Furthermore, bacteria that were cultivated in broth exhibited stronger aggregation than bacteria cultured on agar plates. Conclusively, the test bacteria demonstrate a strong aggregation ability, as well as strong coaggregation when they are in combinations of two bacteria.
Parallel keywords (Croatian)agregacija bakterija humani patogeni koji se prenose hranom.
Resource typetext
Access conditionAccess restricted to higher education institution's students and staff
Terms of usehttp://rightsstatements.org/vocab/InC/1.0/
URN:NBNhttps://urn.nsk.hr/urn:nbn:hr:184:841144
CommitterBosa Licul