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Öğe Acute actinic cheilitis-like chemical irritant reaction following accidental contact with ethylene glycol - Favorable response to topical 1% pimecrolimus cream: A case report(Taylor & Francis Inc, 2008) Erkek, Emel; Kazkayasi, Mustafa; Bozdogan, OnderEthylene glycol is a colorless, odorless, nonvolatile, water-soluble fluid, mainly used as automobile antifreeze and coolant. This substance is a frequent culprit in accidental and intentional poisonings. Although potentially fatal systemic consequences of ethylene glycol ingestion are well known, local adverse effects through brief skin and mucosa contact with ethylene glycol have been rarely reported. Herein we report a patient with accidental ethylene glycol contact to the lower lip, who presented with acute, manifest, actinic cheilitis-like chemical irritant reaction and favorably responded to topical pimecrolimus 1% cream.Öğe A Case of Brucellosis Presenting With Widespread Maculopapular Rash(Lippincott Williams & Wilkins, 2009) Ayaslioglu, Ergin; Kocak, Mukadder; Bozdogan, OnderHuman brucellosis is a multisystemic infectious disease with a broad spectrum of clinical manifestations. Severe complications involving musculoskeletal, nervous, genitourinary, and cardiovascular systems may be encountered during the course of the disease; however, cutaneous complications have been reported rarely. We report a patient with brucellosis in whom the main presenting clinical feature was a maculopapular rash and fever. He was initially diagnosed as brucellosis based on the standard tube agglutination test and blood culture positivity. Histopathologic examination of these maculopapular lesions showed perivascular and periadnexal inflammation with loose granuloma formation including giant cells. We emphasize that brucellosis is an infectious disease that should always be kept in mind in the differential diagnosis of a patient with rash and fever, especially in endemic areas.Öğe A Case of Two Synchronous Cutaneous Collision Tumors(Gazi Univ, Fac Med, 2017) Ayva, Sebnem Kupana; Tepeoglu, Merih; Gunduz, Ozgur; Yazici, Ilker; Bozdogan, OnderCutaneous collision tumors are known as two independent tumors which are close anatomically and separated from one another by well boundaries. We, herein report a 83-year-old female patient with two cutaneous collision tumors in two different localizations at the same time. First cutaneous collision tumor located on left ala nasi was squamous cell carcinoma and basal cell carcinoma and second one located on the right commisure was composed of malignant melanoma (Clark Level IV) and basal cell carcinoma. However, the presence of collision tumors is not uncommon and is often reported in the literature, to the best of our knowledge, it is the first case which shows the association of two synchronous cutaneous collision tumor in the same individual.Öğe Clinicopathologic challenge: Linear brown macules on the chest and arm(Wiley-Blackwell, 2008) Erkek, Emel; Bozdogan, Onder; Sanli, Cihat; Ozoguz, PinarWhat is your diagnosis?Öğe Controlled Trial of Efficacy of Dexketoprofen in Sciatic Nerve Crush Injury in Rats(Journal Neurological Sciences, 2014) Kaptan, Hulagu; Kasimcan, Omur; Ayaz, Murat; Bozdogan, Onder; Karabagli, HakanObject: Local applications of Dexketoprofen trometamol (dex) have been shown to increase in the sciatic nerve functional tests following the nerve injuries. The aim of the current study was to compare the efficacy of dex application for 1 and 5 days following nerve injury rat model. Possible effects of dex were checked by means of the Sciatic Function Index (SFI), Withdrawal of the Reflex Leg (WRL), number of axons, axon diameter, and nerve diameters. Material Methods: The animal crushed model was done through Aesculap -Yasargil aneurysm method on Wistar albino (N=21) right sciatic nerves. In order to achieve desired purpose 3 experimental groups were organized: Group 1: control (injured and no drug); Group2: dexketoprofen 1 days (injured and single dose of drug); Group3: dexketoprofen 5 days (injured and single dose of 5 times drug applications). Injections were done through the tissue expander's injection port with a connecting tube directed at the crush-injured site. Functional recovery of the sciatic nerves was evaluated with the improvement in the SFI values. Additionally, recovery of sensory function was assessed through WRL results and histopathological examination was performed 6 week following the injury. Results: At the end of the experimental periods there was no significant differences were found between the experimental group of animals on the bases of the number of axons, axon diameter, and nerve diameter. Moreover, up 30th day of the experimental period our functional test results have shown that there was no difference between the groups. But following the induction of the injury, the statistical significances were seen on the functional tests. This effect was seen only if the multi-dose application of the dex. Conclusions: This study suggests that; dexketoprofen trometamol of 5 consecutive days, has revealed positive significant changes in the sciatic nerve injury through analgesic effect of it.Öğe Differential expression patterns of metastasis suppressor proteins in basal cell carcinoma(Wiley, 2015) Bozdogan, Onder; Yulug, Isik G.; Vargel, Ibrahim; Cavusoglu, Tarik; Karabulut, Ayse A.; Karahan, Gurbet; Sayar, NiluferBackgroundBasal cell carcinomas (BCCs) are common malignant skin tumors. Despite having a significant invasion capacity, they metastasize only rarely. Our aim in this study was to detect the expression patterns of the NM23-H1, NDRG1, E-cadherin, RHOGDI2, CD82/KAI1, MKK4, and AKAP12 metastasis suppressor proteins in BCCs. MethodsA total of 96 BCC and 10 normal skin samples were included for the immunohistochemical study. Eleven frozen BCC samples were also studied by quantitative real time polymerase chain reaction (qRT-PCR) to detect the gene expression profile. ResultsNM23-H1 was strongly and diffusely expressed in all types of BCC. Significant cytoplasmic expression of NDRG1 and E-cadherin was also detected. However, AKAP12 and CD82/KAI1 expression was significantly decreased. The expressions of the other proteins were somewhere between the two extremes. Similarly, qRT-PCR analysis showed down-regulation of AKAP12 and up-regulation of NM23-H1 and NDRG1 in BCC. Morphologically aggressive BCCs showed significantly higher cytoplasmic NDRG1 expression scores and lower CD82/KAI1 scores than non-aggressive BCCs. ConclusionThe relatively preserved levels of NM23-H1, NDRG1, and E-cadherin proteins may have a positive effect on the non-metastasizing features of these tumors.Öğe The effect of low-dose methotrexate on autologous fat graft survival(Tubitak Scientific & Technical Research Council Turkey, 2016) Sari, Elif; Bakar, Bulent; Sarkarati, Bahram; Bozdogan, Onder; Cavusoglu, TarikBackground/aim: The survival of autologous fat graft tissue is dependent on various factors such as vascularization and inflammation. The aim of the present study was to evaluate the possible beneficial effects of low-dose methotrexate (LD-MTX) on fat graft volume and survival. Materials and methods: A total of 13 male Wistar albino rats were divided into two groups, a control group and an LD-MTX group. An autologous fat graft obtained from the inguinal region of each rat was transferred to its back. LD-MTX was administered intraperitoneally in the LD-MTX group once a week for 4 weeks after the surgical procedure. The control group underwent surgery but was not administered MTX. Fat grafts were harvested for analyses. Results: The results showed that 2 months postoperatively the fat graft weights of the control and LD-MTX groups were not significantly different. In addition, the vascularity of the grafts was higher in the LD-MTX group than it was in the control group. The mean lipid peroxidation levels were essentially the same in the two groups, but myeloperoxidation was significantly lower in the LD-MTX group than it was in the other group. Conclusion: The results showed that LD-MTX administration may not preserve the quality and volume of transplanted fat tissue in rats.Öğe Effectiveness of Dimethylsulfoxide on the Survival and Volume Preservation of Autologous Fat Graft Tissue: A Preliminary Study(Oxford Univ Press Inc, 2016) Sari, Elif; Bakar, Bulent; Sarkarati, Bahram; Bozdogan, Onder; Cavusoglu, TarikBackground: The survival of autologous fat graft tissue is dependent on various factors, such as vascularization and inflammation. Objective: This study aims to evaluate the possible beneficial effects of dimethylsulfoxide (DMSO) on fat graft volume and survival. Methods: Eighteen male Wistar albino rats were divided randomly into three groups. An autologous fat graft obtained from the inguinal region of each rat was transferred to its back. DMSO was administered intraperitoneally (IP) in the DMSO-IP group and cutaneously (C) in the DMSO-C group once daily for 15 days after the surgical procedure. The control group underwent surgery but was not administered with DMSO. Two months after surgery, the grafted fatty tissues were harvested for histopathological and biochemical analyses. Results: The results showed that 2 months postoperatively, fat grafts of the DMSO-C and DMSO-IP groups weighed significantly more than the grafts of the control group. Moreover, the vascularity of the grafts was higher in the DMSO-C group than in the control group, and no significant difference was found between the two DMSO groups. The mean lipid peroxidation levels were the same in the three groups, but myeloperoxidation was significantly lower in the DMSO-C group than in the other two groups. Conclusions: The study results showed that cutaneous rather than intraperitoneal DMSO administration could preserve the quality and volume of transplanted fat tissue in rats by enhancing vascularity and decreasing inflammation.Öğe Epithelial expression of extracellular matrix metalloproteinase inducer/CD147 and matrix metalloproteinase-2 in neoplasms and precursor lesions derived from cutaneous squamous cells: An immunohistochemical study(Elsevier Gmbh, Urban & Fischer Verlag, 2013) Ayva, Sebnem Kupana; Karabulut, Ayse Anil; Akatli, Ayse Nur; Atasoy, Pinar; Bozdogan, OnderExtracellular matrix metalloproteinase inducer (CD147) is a transmembrane glycoprotein involved in the regulation of matrix metalloproteinases (MMPs). The study investigated CD147 and MMP-2 expression in epidermis of cutaneous squamous lesions. CD147 and MMP-2 expressions were evaluated immunohistochemically in 44 specimens: 18 actinic keratoses (AK), 6 squamous cell carcinomas in situ (SCCIS), 13 squamous cell carcinomas (SCC; peritumoral and invasive portions assessed), and 7 normal skins. Patterns of expression were assessed, with MMP-2 in nuclei (MMP-2n) and cytoplasm (MMP-2c) evaluated separately. The expression of each marker was quantified using a calculated immunohistochemical/histologic score (H-score). Correlations were analyzed for the marker H-scores in each study group. Associations between H-scores and histopathologic parameters were also evaluated. CD147 H-score was the highest in SCC (invasive islands), followed by AK, SCCIS, and control specimens, respectively. MMP-2n and MMP-2c H-scores were the highest in AK, followed by SCCIS, SCC, and control specimens, respectively. MMP-2c and MMP-2n H-scores were significantly higher in peritumoral epidermis than in invasive islands of SCC. MMP-2c and CD147 H-scores were positively correlated in the peritumoral SCCs. CD147 H-score was positively correlated with tumor differentiation in SCC. The findings suggest that overexpression of CD147 plays a role in the development of SCC. (C) 2013 Elsevier GmbH. All rights reserved.Öğe Metastasis suppressor proteins in cutaneous squamous cell carcinoma(Elsevier Gmbh, 2016) Bozdogan, Onder; Vargel, Ibrahim; Cavusoglu, Tarik; Karabulut, Ayse A.; Karahan, Gurbet; Sayar, Nilufer; Yulug, Isik G.Cutaneous squamous cell carcinomas (cSCCs) are common human carcinomas. Despite having metastasizing capacities, they usually show less aggressive progression compared to squamous cell carcinoma (SCC) of other organs. Metastasis suppressor proteins (MSPs) are a group of proteins that control and slow-down the metastatic process. In this study, we established the importance of seven well-defined MSPs including NDRG1, NM23-H1, RhoGDI2, E-cadherin, CD82/KAI1, MKK4, and AKAP12 in cSCCs. Protein expression levels of the selected MSPs were detected in 32 cSCCs, 6 in situ SCCs, and two skin cell lines (HaCaT, A-431) by immunohistochemistry. The results were evaluated semi-quantitatively using the HSCORE system. In addition, mRNA expression levels were detected by qRT-PCR in the cell lines. The HSCOREs of NM23-H1 were similar in cSCCs and normal skin tissues, while RGHOGDI2, E-cadherin and AKAP12 were significantly downregulated in cSCCs compared to normal skin. The levels of MKK4, NDRG1 and CD82 were partially conserved in cSCCs. In stage I SCCs, nuclear staining of NM23-H1 (NM23-H1nuc) was significantly lower than in stage SCCs. Only nuclear staining of MKK4 (MKK4nuc) showed significantly higher scores in in situ carcinomas compared to invasive SCCs. In conclusion, similar to other human tumors, we have demonstrated complex differential expression patterns for the MSPs in in-situ and invasive cSCCs. This complex MSP signature warrants further biological and experimental pathway research. (C) 2016 Elsevier GmbH. All rights reserved.Öğe p16INK4a, and p14ARF Expressions in Carcinogenesis of Squamous Cell Carcinoma of the Lip(Middle Eastern Assoc Cancer Research, 2022) Akatli, Ayse Nur; Ayva, Ebru Sebnem; Bozdogan, OnderThe goal of this study was to clarify the role of p16(INK4a), p14(ARF), and p53 protein expressions in carcinogenesis in squamous cell carcinomas of the lip. The expressions of the p53, p16(INK4a), and p14(ARF) proteins were examined in 46 formaline-fixed paraffin embedded tissue specimens, which included 19 cases of squamous cell carcinoma of the lip, 14 cases of actinic cheilitis, and 13 cases of normal mucosa. Immunoreactivity in the peritumoral epithelium adjacent to squamous cell carcinomas was also evaluated. p16(INK4a) expression was increased in actinic cheilitis in comparison with normal mucosa (p=0.001). p14(ARF) expression progressively increased from normal mucosa to actinic cheilitis (p=0.001) and was observed to decrease significantly during the process of transition from actinic cheilitis to carcinoma (p=0.003). p53 values progressively increased from normal mucosa to actinic cheilitis (p=0.001) and carcinoma (p=0.008). A significant positive correlation was found between p14(ARF) and p53 in the peritumoral epithelium adjacent to carcinomas. Our findings indicated that p16(INK4a) and p14(ARF) immunohistochemistry does not determine whether or not actinic cheilitis has the potential to develop carcinoma. The p14(ARF) /p53 pathway is activated in the peritumoral epithelium adjacent to carcinoma; however, this activation would not be adequate to prevent carcinogenesis.Öğe Prevention of the harmful effects of free oxygen radicals by using N-acetylcysteine in testicular torsion(ELSEVIER SCI LTD, 2020) Tangul, Sevgi Ulusoy; Cakmak, Ahmet Murat; Caglayan, Osman; Bozdogan, OnderIntroduction Testicular torsion is a urological emergency both in childhood and in adult life. Many studies on experimental testicular torsion have demonstrated biochemical and pathological ischemia reperfusion injury and the efficacy of some drugs have been investigated to prevent this damage. N-acetylcysteine (NAC) promotes glutathione synthesis and acts as a glutathione precursor because of the fact that it increases the glutathione-reductase activity by transporting sulfhydryl groups. Aim In this experimental study, the authors aimed to investigate the effectiveness of NAC in preventing ischemia-reperfusion injury following testicular torsion and detorsion. Study design For this experimental study, 36 albino Wistar-male rats were used. The rats were randomly divided into 4 groups: sham (n = 8), ischemia-reperfusion (n = 8), ischemia-NAC -reperfusion (n = 10), and ischemia-NAC-reperfusionNAC (n = 10) groups. Two hours of torsion and 4 h of detorsion were created in the left testis. After 4 h of detorsion, the rats were sacrificed. Each tissue was divided into two sections for biochemical and pathological examinations. Results There was a statistically significant difference between the study groups in terms of the total-sulfhydryl level, nitric oxide level, and the malondialdehyde values. Histopathological examination revealed that NAC was effective in preventing reperfusion injury in the testis but ineffective in preventing the reduction in the spermatid count. Discussion The results of this experimental study support that NAC can histopathologically maintain the structure of seminiferous tubules against ischemis reperfusion injury and prevent damage to the germinative cells. However, it was unable to prevent the reduction in spermatid count. There was no significant difference in the prevention of ischemiareperfusion injury between NAC administration during the first hour of ischemia and NAC administration during reperfusion. Although NAC can prevent tissue damage from ischemia reperfusion injury, it is not effective against the reduction in the spermatid count. Conclusion N-acetylcysteine may be biochemically effective in preventing ischemia-reperfusion injury after testicular torsion and detorsion. NAC is a readily available and easy to use agent that can be used during testicular ischemia.Öğe Öğe Rare Localizations of Basal Cell Carcinoma: Lower Lip and Popliteal Area(Medknow Publications & Media Pvt Ltd, 2016) Sari, Elif; Bekircan, Kagan; Bozdogan, OnderIn this report, we describe two cases of basal cell carcinoma (BCC), one of them is on the lower lip and the other is on the popliteal area. A 45-year-old male patient with an unhealed wound on the lower lip and a 38-year-old male patient with an unhealed wound over the popliteal skin were admitted to our clinic. There was no sun exposure and trauma in their medical history. A biopsy was taken from each case. The results were BCC in two patients. BCC is usually seen in the head and neck regions, but it may be also localized in rare areas such as the lower lip and lower extremity. These unpredictable areas should be considered for tumor surgery.Öğe Scleredema Diabeticorum in a Patient with Type 2 Diabetes Mellitus(Galenos Yayincilik, 2016) Sari, Isilay Kalan; Durmaz, Senay Arikan; Bozdogan, Onder; Kocak, MukadderScleredema is a rare skin disease and clinically presents as diffuse, painless induration and thickening of the skin. Scleredema diabeticorum is usually slowly progressive and characterized by insidious onset and tends to be persistent. This type of scleredema primarily affects middle-aged and obese adults. Typically, affected area is the upper part of the body including the posterior neck, interscapular region and the chest. It usually develops in subjects with diabetes mellitus of long duration and poor metabolic control. We discussed a case of scleredema in a 54-year-old woman with a history of diabetes mellitus.Öğe The effect of the platelet-rich plasma on osteogenic potential of the periosteum in an animal bone defect model(Turkish Joint Diseases Foundation, 2021) Oktas, Birhan; Cirpar, Meric; Sanli, Elif; Canbeyli, Ibrahim Deniz; Bozdogan, OnderObjectives: This study aims to investigate whether plasma-rich plasma (PRP) enhances the osteogenic potential of periosteal grafts used to repair bone defects and maintains both histologically and biomechanically more durable bone tissue. Materials and methods: A standard bone defect was formed to the left femurs of 54 Sprague-Dawley rats and three groups were formed. In the first group (n=18), no periosteal repair was done for bone defect. In the second group (n=18), periosteal graft tissue was sutured to cover the defect entirely. In the third group (n=18), before periosteal repair, a 1 mL of PRP fibrin was applied into the bone defect. All femoral specimens were compared histologically at four and six weeks and biomechanically by three-point bending test at six weeks after treatment. Results: In the PRP applied group, healing of the bone defect at four weeks was significantly better than the other groups in terms of histological new bone formation (p<0.05). At six weeks, new bone formation in both of the periosteum preserved groups was superior to the first group (p<0.05, for both). There was no statistically significant difference between the second and third groups at the end of the sixth week in the biomechanical analysis, although both groups were significantly stronger than the first group (p<0.05). Conclusion: Stimulation of the periosteum with PRP application causes early osteogenic differentiation of precursor cells. Although, at biomechanical basis, PRP application does not create any significant difference, in the recovery of the bone defects at very early period, application of PRP may play a role to accelerate fracture and to decrease nonunions.
