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AĞRALI, ÖMER BİRKAN

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AĞRALI

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ÖMER BİRKAN

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2018 - 201912020 - 20221
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Author: ÖZTÜRK ÖZENER, HAFİZE × Has files: true ×

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    PublicationOpen Access
    Evaluation of the Effectiveness of Esterified Hyaluronic Acid Fibers on Bone Regeneration in Rat Calvarial Defects
    (HINDAWI LTD, 2018-06-28) ÖZBEYLİ, DİLEK; Agrali, Omer B.; Yildirim, Selin; Ozener, Hafize O.; Kose, Kemal N.; Ozbeyli, Dilek; Soluk-Tekkesin, Merva; Kuru, Leyla
    Hyaluronic acid (HA) constitutes one of the major components of the extracellular matrix domain in almost all mammals. The aim of this study was to evaluate the regenerative capacity of HA matrix in rat calvarial bone defects and compare with those of different combinations of resorbable collagen membrane (M) and bovine-derived xenograft (G). Twenty-four 3-month-old male Sprague-Dawley rats weighing 200-250 g were included. Control group was created by leaving one defect empty from 2 critical size defects with 5 mm diameter formed in the calvarial bones of 8 rats. In the same rats, the other defect was treated with HA matrix alone. One of the 2 defects formed in other 8 rats was treated with HA + G and the other with HA + M. One of the 2 defects formed in the remaining 8 rats was treated wilh G+M and the other with HA+G+M. The animals were sacrificed at 4 weeks. Histologic, histomorphometric, and immunohistochemical analyses were performed. Both HA matrix alone and its combinalions with G and M supported new bone formation (NBF). However, NBF was significantly greater in G+M and HA+G+M groups compared to control and HA alone (P < 0.00l). Bone morphogenetic protein-2 was expressed with varying degrees in all groups, without any difference among them. Within the limitations of the present study, HA matrix, used alone or in combination with G and M, did not contribute significantly to bone regeneration in rat calvarial bone defects.
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    PublicationOpen Access
    Single nucleotide polymorphisms in IL-1A RS1800587, IL-1B RS1143634 and vitamin D receptor rs731236 in stage III grade B/C periodontitis
    (2022-06-01) ÖZTÜRK ÖZENER, HAFİZE; ASLAN, BEGÜM; AĞRALI, ÖMER BİRKAN; ULUCAN, KORKUT; YILDIRIM, HATİCE SELİN; KURU, LEYLA; Ozener H., ASLAN B., Eken B. F., AĞRALI Ö. B., Yildrim H. S., Altunok E. C., ULUCAN K., KURU L.
    The purpose of the study is to determine the prevalence of interleukin (IL)-1A (rs1800587), IL-1B (rs1143634) and vitamin D receptor (VDR) (TaqI, rs731236) gene polymorphisms in the Turkish population and their association with Stage III Grade B/C periodontitis. Systemically and periodontally healthy individuals (N = 100) and Stage III Grade B/C periodontitis patients (N=100) based on clinical and radiographic examination were included in this research. Clinical attachment level, probing depth, bleeding on probing, plaque and gingival indices of the subjects were measured. Genotyping of IL-1A (rs1800587), IL-1B (rs1143634) and VDR (rs731236) polymorphisms was conducted by Real Time PCR. Allelic and genotypic distributions of IL-1A (rs1800587) gene polymorphism were not associated with periodontitis (p > 0.05). In IL-1B (rs1143634) gene polymorphism, the C allele was detected more frequently in healthy individuals compared with the periodontitis patients (p=0.045). CC genotype and C allele in VDR (rs731236) gene polymorphism was higher in periodontitis patients (p=0.031, p=0.034, respectively). In comparison with Grade B periodontitis patients and healthy subjects, CC genotype and C allele were observed more frequently in the Grade B periodontitis in terms of alleles (C/T) and genotypes for VDR (rs731236) polymorphism (p=0.024, p=0.008, respectively). This study presents that the VDR (rs731236) polymorphism are associated with enhanced susceptibility to Stage III periodontitis in the Turkish population. Furthermore, VDR (rs731236) polymorphism may be used as an identification criteria to discriminate Grade B and Grade C in Stage III periodontitis.