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    Dimethyl sulfoxide but not indomethacin is efficient for healing in hydrofluoric acid eye burns
    (ELSEVIER SCI LTD, 2017) Altan, Semih; Ogurtan, Zeki
    Introduction: In this study, we aimed to investigate the effect of indomethacin and dimethyl sulfoxide (DMSO), well-known antioxidant and anti-inflammatory agents, to heal eye burns induced with hydrofluoric acid in rabbits. Methods: After general anesthesia, the right eye of 72 male New Zealand rabbits were burned by instillation of 2% hydrofluoric acid for 60 s. Following this, the eyes were irrigated with 500 cc normal saline. The rabbits were then divided into four groups of 18 rabbits each. Group D was instilled dimethyl sulfoxide 40%, Group I indomethacin 0.1%, and Group DI dimethyl sulfoxide together with indomethacin for 2, 7, and 14 treatment days, respectively. Group C received no instilled drug as control. Treatment efficacies were evaluated as clinical (corneal haziness, conjunctival status, conjunctivitis, corneal erosion area, and intraocular pressure) and histopathological (inflammatory cell infiltration, vascularization, stromal thickness, reepithelization, proliferating cell nuclear antigen [PCNA], apoptosis, and inducible nitric oxide synthases [iNOS]). Results: In terms of corneal haziness and erosion area at days 7 and 14, group D showed the best result statistically as compared to the other groups. This group also showed the best result statistically for reepithelization rate, stromal thickness, and inflammatory cell end at day 14 as compared to the other groups. Conclusions: Dimethyl sulfoxide (40%) was efficient to induce reepithelization on mild hydrofluoric acid eye burns, whereas 0.1% indomethacin both alone and along with DMSO poorly induced reepithelization and exacerbated inflammation. Thus, 40% DMSO could be used for the treatment of corneal disorders. (C) 2016 Elsevier Ltd and ISBI. All rights reserved.
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    Light microscopic evaluation of the nucleolar organiser regions of skin cells of the dogs subjected to therapeutic ultrasounds
    (NATL VETERINARY RESEARCH INST, 2008) Ogurtan, Zeki; Aydin, Mehmet Faruk; Ceylan, Cengiz; Celik, Ilhami
    A possible use of some argyrophilic nucleolar organiser region (AgNOR) parameters as a biological counter to predict the biological behaviour of basal epidermal cells and dermal fibroblasts in dogs subjected to therapeutic ultrasound (US) exposure was determined. All the dogs, except the control dogs, had US treatment at an intensity of 0.5 W/cm(2) (SATA), frequency of 1.0 MHz, pulsed 2 ms on and 8 ms off for 5 min daily for 10 d. Full thickness skin samples were taken on days 4, 18, 32, 46, and 74 following cessation of 10 d US application and right after the 10(th) d of US exposure. A statistically significant difference immediately at the end of day 10 of US exposure was found for all parameters measured, except NOR diameters of the stratum basale cells. All the measured parameters, except NOR numbers of fibroblasts in the dermis, returned to normal (control) values by day 74 indicating that the therapeutic effect of US at the given characteristics lasts at least longer than 46 d regarding thickness of the stratum corneum, longer than 32 d regarding NOR numbers in the cells of the stratum basale, and NOR diameters in the cells of the stratum basale, and longer than 74 d regarding NOR numbers in fibroblasts. The results presented herein suggest that there is a correlation between the longevity of ultrasound effect and the alteration of AgNORs parameters and their characteristics. Considering the longer duration of reversible alterations in our study, it would be reasonable to determine the effectiveness of ultrasound by AgNOR counting.