Browsing by Author "Kozan, G."

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Comparison of Resorption in Autogenous Dorsal Onlay Cartilage Grafts: An Experimental Study
(2024) Öner, F.; Kozan, G.
Objectives: The present study was designed to compare the graft resorption characteristics of autogenous cartilage from the septum, auricle, and costal in the superficial muscular aponeurotic system of the nasal dorsum of the rabbit model. Methods: Equal-sized perichondrium-free septal, auricular, and costal cartilage grafts were collected from fifteen New Zealand white rabbits. Cartilage grafts were taken at the scale of two grafts from each animal's ear, two from its costal part, and one from its septum. Costal cartilage grafts that were shaped with a micro-motor device and monopolar electrocautery, elastic cartilage grafts that were shaped with a micro-motor device and monopolar electrocautery, and septal cartilage grafts that were shaped with a scalpel were all implanted into the dorsum of rabbit's noses to create five groups. All autogenous cartilage tissues were removed 3 months later. Cartilages were evaluated for histological features, graft mass, and chondrocyte density resorption. Results: The elastic cartilage group, where electrocautery was used to shape the cartilage, had a higher resorption score than the other groups. The costal cartilage graft shaped with a micro-motor was also observed to have the best cartilage regeneration score. Conclusion: We observed that the resorption of costal cartilage was lower than that of ear and septum cartilage. It was determined that micro-motor application for the shaping process caused less resorption and stimulated more regeneration than cautery application. Level of evidence iii: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
Comparison of Resorption in Autogenous Dorsal Onlay Cartilage Grafts: An Experimental Study
(2024.01.01) Öner, F.; Kozan, G.
Objectives The present study was designed to compare the graft resorption characteristics of autogenous cartilage from the septum, auricle, and costal in the superficial muscular aponeurotic system of the nasal dorsum of the rabbit model. Methods Equal-sized perichondrium-free septal, auricular, and costal cartilage grafts were collected from fifteen New Zealand white rabbits. Cartilage grafts were taken at the scale of two grafts from each animal’s ear, two from its costal part, and one from its septum. Costal cartilage grafts that were shaped with a micro-motor device and monopolar electrocautery, elastic cartilage grafts that were shaped with a micro-motor device and monopolar electrocautery, and septal cartilage grafts that were shaped with a scalpel were all implanted into the dorsum of rabbit’s noses to create five groups. All autogenous cartilage tissues were removed 3 months later. Cartilages were evaluated for histological features, graft mass, and chondrocyte density resorption. Results The elastic cartilage group, where electrocautery was used to shape the cartilage, had a higher resorption score than the other groups. The costal cartilage graft shaped with a micro-motor was also observed to have the best cartilage regeneration score. Conclusion We observed that the resorption of costal cartilage was lower than that of ear and septum cartilage. It was determined that micro-motor application for the shaping process caused less resorption and stimulated more regeneration than cautery application. Level of Evidence III This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online
The Therapeutic Effect of Capsaicin and/or Steroids on Inflammation in an Experimental Allergic Rhinitis Model
(2023.01.01) Oner, F.; Kozan, G.; Kara, A.
Objective: Allergic rhinitis is a chronic upper respiratory disease characterized by inflammation of the nose due to the accumulation of inflammatory cells. We aimed to investigate the therapeutic efficacy of capsaicin and/or steroids in reducing the symptoms, proinflammatory cytokine levels, and inflammatory cell infiltrations in an animal model of allergic rhinitis. Materials and Methods: Thirty-five male Wistar rats were divided into five groups. Following injection and initial intranasal challenge with ovalbumin, rats were treated with intraperitoneal capsaicin (50 mg/kg) and/or steroid (10 mg/kg) injection for seven days. After nasal symptom scorings, all rats were sacrificed under anesthesia, and blood samples and nasal septa were collected for hematologic, biochemical, and histopathologic examinations. Results: The ovalbumin challenge increased nasal symptom scores, eosinophil and basophil counts, the serum IL-4, IL-5, IL-13 and IL33 levels, and histopathologic damage. Capsaicin and/or steroid administration attenuated the allergic rhinitis symptoms. There was a therapeutic effect of capsaicin and the combined use of capsaicin and steroids on experimentally-induced allergic rhinitis as reflected by decreases in allergic inflammation and secretion of cytokines. There was no difference between the CAPS, CAPS-STR, and STR groups in terms of allergic rhinitis symptoms. Conclusion: Parenteral administration of CAPS alone, and especially the combined use of CAPS and STR, effectively treats allergic rhinitis symptoms in a rat model of allergic rhinitis. Our results show that CAPS alone is not an effective alternative to STR but accelerates the recovery of allergic rhinitis.
The Therapeutic Effect of Capsaicin and/or Steroids on Inflammation in an Experimental Allergic Rhinitis Model
(Turkish National Society of Allergy and Clinical Immunology, 2023) Oner, F.; Kozan, G.; Kara, A.
Objective: Allergic rhinitis is a chronic upper respiratory disease characterized by inflammation of the nose due to the accumulation of inflammatory cells. We aimed to investigate the therapeutic efficacy of capsaicin and/or steroids in reducing the symptoms, proinflammatory cytokine levels, and inflammatory cell infiltrations in an animal model of allergic rhinitis. Materials and Methods: Thirty-five male Wistar rats were divided into five groups. Following injection and initial intranasal challenge with ovalbumin, rats were treated with intraperitoneal capsaicin (50 mg/kg) and/or steroid (10 mg/kg) injection for seven days. After nasal symptom scorings, all rats were sacrificed under anesthesia, and blood samples and nasal septa were collected for hematologic, biochemical, and histopathologic examinations. Results: The ovalbumin challenge increased nasal symptom scores, eosinophil and basophil counts, the serum IL-4, IL-5, IL-13 and IL-33 levels, and histopathologic damage. Capsaicin and/or steroid administration attenuated the allergic rhinitis symptoms. There was a therapeutic effect of capsaicin and the combined use of capsaicin and steroids on experimentally-induced allergic rhinitis as reflected by decreases in allergic inflammation and secretion of cytokines. There was no difference between the CAPS, CAPS-STR, and STR groups in terms of allergic rhinitis symptoms. Conclusion: Parenteral administration of CAPS alone, and especially the combined use of CAPS and STR, effectively treats allergic rhinitis symptoms in a rat model of allergic rhinitis. Our results show that CAPS alone is not an effective alternative to STR but accelerates the recovery of allergic rhinitis.