In vivo Study of a Collagen Impregnated Polyester Arterial Prosthesis: the Arteknit Ra K® Graft
Bibliographic record
Abstract
CieÄž:UĹž pred Äasom sme uviedli, Ĺže prechodnĂŠ zvýťenie vnĂştrobunkovej koncentrĂĄcie Ca2+ v bunkĂĄch podobnĂ˝ch endotelu mĂ´Ĺže odrĂĄĹžaĹĽ priebeh endotelizĂĄcie na polyesterovej tepennej protĂŠze typu Arteknit Ra K®, implantovanej do aorty neÄistokrvnĂ˝ch psov (Physiol Res 2002;51:217-20). V tejto ĹĄtĂşdii sme u tĂ˝chto psov po krĂĄtkodobej implantĂĄcii hodnotili vÄasnĂŠ vhojenie tepennĂŠho ĹĄtepu, t. j. jeho priechodnosĹĽ, morfolĂłgiu, endotelizĂĄciu a tromborezistenciu. MetĂłdy:Do aorty neÄistokrvnĂ˝ch psov sme na vopred urÄenĂŠ obdobie v rozmedzĂ 48 hodĂn aĹž 6 mesiacov implantovali 12 protĂŠz typu Arteknit Ra K®. Vzorky vyĹatĂŠho ĹĄtepu boli vyĹĄetrenĂŠ histologicky a skenovacou elektrĂłnovou mikroskopiou, analyzovanĂŠ na vychytĂĄvanie krvnĂ˝ch doĹĄtiÄiek a fibrinogĂŠnu, a zĂĄroveĹ aj na koncentrĂĄciu prostacyklĂnu (PGI2) a tromboxĂĄnu A2 (TXA2). VĂ˝sledky:V Äase utratenia mali vĹĄetky ĹĄtepy neporuĹĄenĂş ĹĄtruktĂşru a 11 z nich vykazovalo vyhovujĂşcu rozmerovĂş stabilitu. Po 48 hodinĂĄch bola pozorovanĂĄ akĂştna, stredne zĂĄvaĹžnĂĄ zĂĄpalovĂĄ odpoveÄ, ktorĂş neskĂ´r nahradila chronickĂĄ zĂĄpalovĂĄ reakcia s obrovskĂ˝mi bunkami okolo cudzieho telesa, ktorĂŠ boli prĂtomnĂŠ aj po 6 mesiacoch. Po jednom mesiaci sa v obidvoch oblastiach anastomĂłzy vytvorili plĂĄty endotelu-podobnĂ˝ch buniek. StrednĂĄ ÄasĹĽ ĹĄtepu bola po celĂ˝ Äas trvania pokusu infiltrovanĂĄ organizovanou trombotickou matrix s ojedinele roztrĂşsenĂ˝mi endotelu-podobnĂ˝mi bunkami. Po troch mesiacoch doĹĄlo k biologickej erĂłzii luminĂĄlneho povlaku kolagĂŠnu a jeho rozklad neprekĂĄĹžal procesu hojenia. Tri aĹž ĹĄesĹĽ mesiacov po implantĂĄcii boli v hrudnĂku pozorovanĂŠ na vonkajĹĄom povrchu ĹĄtepu zhrubnutĂŠ kapsule. V priebehu jednĂŠho aĹž ĹĄiestich mesiacov bolo vychytĂĄvanie krvnĂ˝ch doĹĄtiÄiek a fibrinogĂŠnu celkove nĂzke a pomerovĂŠ indexy PGI2 : TXA2 stanovenĂŠ vo vĹĄetkĂ˝ch Äastiach ĹĄtepu boli vyĹĄĹĄie ako 1. ZĂĄvery:PolyesterovĂĄ protĂŠza typu Arteknit Ra K® vykĂĄzala vyhovujĂşcu rozmerovĂş stabilitu, stredne vysokĂş biokompatibilitu a uspokojivĂŠ vhojenie v zmysle tkanivovĂ˝ch a zĂĄpalovĂ˝ch reakciĂ.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".