prikaz prve stranice dokumenta Novel ex vivo human osteochondral explant model of knee and spine osteoarthritis enables assessment of inflammatory and drug treatment responses
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master's thesis
Novel ex vivo human osteochondral explant model of knee and spine osteoarthritis enables assessment of inflammatory and drug treatment responses
Zagreb: University of Zagreb, School of Medicine, 2019. urn:nbn:hr:105:587056
Jurić, Doria
University of Zagreb
School of Medicine
Department of Orthopedics

Institutional repository: Dr Med - University of Zagreb School of Medicine Digital Repository

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Jurić, D. (2019). Novel ex vivo human osteochondral explant model of knee and spine osteoarthritis enables assessment of inflammatory and drug treatment responses (Master's thesis). Zagreb: University of Zagreb, School of Medicine. Retrieved from https://urn.nsk.hr/urn:nbn:hr:105:587056

Jurić, Doria. "Novel ex vivo human osteochondral explant model of knee and spine osteoarthritis enables assessment of inflammatory and drug treatment responses." Master's thesis, University of Zagreb, School of Medicine, 2019. https://urn.nsk.hr/urn:nbn:hr:105:587056

Jurić, Doria. "Novel ex vivo human osteochondral explant model of knee and spine osteoarthritis enables assessment of inflammatory and drug treatment responses." Master's thesis, University of Zagreb, School of Medicine, 2019. https://urn.nsk.hr/urn:nbn:hr:105:587056

Jurić, D. (2019). 'Novel ex vivo human osteochondral explant model of knee and spine osteoarthritis enables assessment of inflammatory and drug treatment responses', Master's thesis, University of Zagreb, School of Medicine, accessed 26 November 2024, https://urn.nsk.hr/urn:nbn:hr:105:587056

Jurić D. Novel ex vivo human osteochondral explant model of knee and spine osteoarthritis enables assessment of inflammatory and drug treatment responses [Master's thesis]. Zagreb: University of Zagreb, School of Medicine; 2019 [cited 2024 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:105:587056

D. Jurić, "Novel ex vivo human osteochondral explant model of knee and spine osteoarthritis enables assessment of inflammatory and drug treatment responses", Master's thesis, University of Zagreb, School of Medicine, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:105:587056

Metadata
TitleNovel ex vivo human osteochondral explant model of knee and spine osteoarthritis enables assessment of inflammatory and drug treatment responses
Title (croatian)Novi ex vivo humani osteohondralni eksplantacijski model koljena i kralježnice omogućuju procjenu upalnog i terapijskog odgovora
AuthorDoria Jurić
MentorMislav Jelić (mentor)
Committee memberMislav Jelić (predsjednik povjerenstva)
Committee memberIvan Bojanić (član povjerenstva)
Committee memberTomislav Đapić (član povjerenstva)
GranterUniversity of Zagreb
School of Medicine
(Department of Orthopedics)
Zagreb
Defense date and country2019-07-12, Croatia
Scientific / art field,
discipline and subdiscipline		BIOMEDICINE AND HEALTHCARE
Clinical Medical Sciences
Orthopedics
Abstract
Osteoarthritis of the knee and spine is highly prevalent in the modern society, yet a disease-modifying pharmacological treatment remains an unmet clinical need. A major challenge for drug development includes selection of appropriate preclinical models that accurately reflect clinical phenotypes of human disease. The aim of this study was to establish an ex vivo explant model of human knee and spine osteoarthritis that enables assessment of osteochondral tissue responses to inflammation and drug treatment. Equal-sized osteochondral fragments from knee and facet joints (both n = 6) were subjected to explant culture for 7 days in the presence of a toll-like receptor 4 (TLR4) agonist and an inhibitor of transforming growth factor-beta (TGF-β) receptor type I signaling. Markers of inflammation, interleukin-6 (IL-6) and monocyte chemoattractant protein-1 (MCP-1), but not bone metabolism (pro-collagen-I) were significantly increased by treatment with TLR4 agonist. Targeting of TGF-β signaling resulted in a strong reduction of pro-collagen-I and significantly decreased IL-6 levels. MCP-1 secretion was increased, revealing a regulatory feedback mechanism between TGF-β and MCP-1 in joint tissues. These findings demonstrate proof-of-concept and feasibility of explant culture of human osteochondral specimens as a preclinical disease model, which might aid in definition and validation of diseasemodifying drug targets.
Abstract (croatian)
Osteoartritis koljena i kralježnice vrlo je čest u modernom društvu, no farmakološko liječenje koje utječe na bolest ostaje i dalje neispunjena klinička potreba. Glavni izazov za razvoj lijeka uključuje odabir odgovarajućih predkliničkih modela koji točno odražavaju kliničke fenotipove bolesti. Cilj ovog istraživanja bilo je utvrditi ex vivo model eksplantacije osteoartritisa ljudskog koljena i kralježnice koji omogućuju procjenu odgovora osteokondralnog tkiva na upalu i liječenje lijekovima. Osteokondralni fragmenti jednakih veličina iz zglobova koljena i faceta (oba n=6) podvrgnuti su kulturi eksplantacije 7 dana u prisutnosti agonista TLR4 i inhibitoraTGF-β receptora tipa I. Markeri upale, interleukin 6 (IL-6), monocitnikemoatraktantni protein-1, ali ne i metabolizam kosti (pro-kolagen-1) bili su značajno povišeni liječenjem s TLR4 agonistom. Ciljanje TGF-β signalizacije rezultiralo je jakom redukcijom pro-kolagena-1 i značajno smanjilo razine IL-6. MCP-1 sekrecija je povećana, otkrivajući regulatorni mehanizam povratne sprege između TGF-β i MCP-1 u zglobnom tkivu. Ovi nalazi dokazuju, koncept i izvedivost kulture eksplantacije ljudskih osteokondralnihuzoraka kao predklinički model bolesti, koji bi mogao pomoći u definiranju i validaciji ciljeva lijekova koji modificiraju bolesti.
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:105:587056
Study programmeTitle: Medicine (in English language)
Study programme type: university
Study level: integrated undergraduate and graduate
Academic / professional title: doktor/doktorica medicine (doktor/doktorica medicine)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-07-13 08:47:02