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    Association Between Initial Findings Leading to Behcet's Disease Diagnosis and Further Organ Involvements
    (Wolters Kluwer Medknow Publications, 2022) Yanatma, Irem; Sarac, Gulbahar; Cenk, Hulya; Arslan, Selami; Durmaz, Imge; Ay, Gonca
    Objectives: Studies show that the symptoms are clustered in certain ways in Behcet's disease (BD), which causes involvement of multiple organs. We aimed to investigate the association between clinical findings at onset and further organ involvements, which may occur during follow-up. Materials and Methods: A total of 363 patients diagnosed with BD in accordance with the International Criteria for BD (ICBD) between 2003 and 2019 at the Inonu University were included in the study, and all the first findings were compared with further organ involvements. Results: A statistical significance was detected between erythema nodosum like lesions and both pulmonary (P = 0.002) and vascular (P = 0.022) involvements. The frequency of neurological involvement was higher in patients with papulopustular/pseudo-follicular lesions (P = 0.043). Gastrointestinal involvement was detected in 33.3% of the patients with herpetiform aphthae. The frequency of ocular involvement was significantly higher in patients with a negative pathergy test result (P = 0.013). Conclusion: The clinical clusters in BD may provide a predictive value about the disease course for clinicians. Although it has been shown that there is an association between some clinical findings and involvements which are mentioned before, this is one of the most comprehensive studies according to us. The clinical clusters in BD may provide a predictive value about the disease course for clinicians. Although it has been shown that there is an association between some clinical findings and involvements in the literature, this is one of the most comprehensive studies as far as we know.
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    Comparison of polycaprolactone and calcium hydroxylapatite dermal fillers in a rat model
    (Wiley, 2021) Yanatma, Irem; Sarac, Gulbahar; Gul, Mehmet; Gul, Semir; Kapicioglu, Yelda
    Polycaprolactone (PCL) and calcium hydroxylapatite (CaHA) are semipermanent dermal fillers that are frequently preferred in the last decade. This study aims to compare the effects of these two fillers in the rat skin. A total of 30 female rats were divided into; control, PCL, and CaHA group. Tissue samples taken at the second and fourth month were stained with hematoxylin-eosin, Masson trichrome, collagen type 1, and 3 immunohistochemical antibodies. Collagen density was quantitatively compared using the Image J computer program. At 2 and 4 months, the density of collagen increased in both filler groups compared to the control group. There was no significant difference between collagen density or type 1 and type 3 collagen H scores in the filler groups. The number of fibroblast nuclei was significantly higher in the PCL group at 4 months compared to the other two groups. Dermis thickness was found to be superior in both filler groups compared to the control group at the fourth month, there was no significant difference between the filler groups. We compared the effect of CaHA and PCL filler on collagenization histologically and immunohistochemically. We found that PCL and CaHA fillers are effective in increasing dermal collagen density, type 1 and type 3 collagen amount, and preventing dermis atrophy and showed that they have no advantage over each other in this respect. We have shown that PCL filler provides more fibroblast increase compared to CaHA filler and the effect of stimulating fibroblast proliferation takes longer.