Browsing by Author "CANATAN, UYGUR"

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A novel technique of pulmonary artery banding by means of radiofrequency ablation: An experimental study in rabbits
(Bayçınar Tıbbi Yayıncılık, 2022-07-01) Uysal, Fahrettin; Akça, Tuğberk; Genç, Abdüsselam; Küpeli, Zehra Avcı; Özfırat, Erencan; Canatan, Uygur; Uysal, Berfin; Sığnak, Işık Şenkaya; UYSAL, FAHRETTİN; AKÇA, TUĞBERK; GENÇ, ABDÜSSELAM; KÜPELİ, ZEHRA AVCI; ÖZFIRAT, ERENCAN; CANATAN, UYGUR; ŞENKAYA SIĞNAK, IŞIK; 0000-0002-2747-974X; AAH-4421-2021; AEX-4557-2022; CQK-7120-2022; FHA-3247-2022; JHY-2022-2023; CJU-7194-2022; GPN-0680-2022
Background: The aim of this study was to evaluate the efficacy and feasibility of a novel method of narrowing pulmonary arteries with catheter angiography using radiofrequency energy in rabbits. Methods: A total of nine New Zealand white rabbits weighing 3.0 to 4.2 kg each were utilized in this experimental study. After the location of pulmonary artery was confirmed by echocardiography and angiography, radiofrequency energy was applied by starting with 5 W energy for the first time and increasing by 5 W, if there was no rupture to a maximum of 20 W. Multiple applications of radiofrequency energy with different durations were performed at different levels of the pulmonary artery. Eight weeks later, surviving rabbits were sacrificed. The pulmonary arteries were removed for histological investigation. Results: Five rabbits remained alive after the experiment. There was a significant correlation between radiofrequency power and the degree of vessel thickness change in the pulmonary artery. The endothelial integrity of the tunica intima was impaired in all groups and the diameter of vessel was thickened by an average of 3.5 times. Conclusion: The narrowing of the pulmonary artery using radiofrequency energy was successfully performed in a small sample size of experimental animals in this study.
The effect of rat adipose-derived stem cells in bone tissue regeneration
(Kafkas Univ, Veteriner Fakultesi Dergisi, 2022-04-05) İlhan, Tuncay; İLHAN, TUNCAY; SALCI, HAKAN; Akkoç, Cansel G. Özgüden; Çetin, Melike; Incebıyık, Ece; Canatan, Uygur; CANATAN, UYGUR; Salcı, Hakan; ERDOST, HATİCE; Erdost, Hatice; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Genel Cerrahi Anabilim Dalı.; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Histoloji ve Embriyoloji Anabilim Dalı; 0000-0003-0712-0892; JDC-5958-2023; F-2822-2017
Stem cell approaches has been increasing in the conventional medicine. This study was planned to determinate the efficacy of adipose-derived stem cells (ADSCs) on the bone fracture's regeneration by histologically, morphologically and radiologically. Primarily isolated cells were cultivated and identified for the obtaining of the third passage mesenchymal stem cells in the cell culture laboratory. The right tibias (applicated ADSCs) were planned as experimental group and the left tibias were studied as control on the clinically healthy 10 rats. The middle diaphysis of the right and left tibias was transversally cut by a thin saw and then fixed by intramedullary pin. Before surgical closure of the incised area, 106 ADSCs were injected on an absorbent material, which covered the cut site of the right tibia, in experimental group. At postoperative 45th day, cranio-caudal and lateral radiographs of the tibias pointed out that there was callus formation in the caudal and lateral parts of the right tibia. After sacrification of the animals, preparations were made for histological examinations. The results indicate that there were clear differences in the mitotic activity; and also, the experimental tibias were found to be rich in blood vessel network. As a conclusion, it was found that ADSCs can have a positive potential effect on osteogenesis in bone tissue.