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Öğe AEG-1 expression in invasive ductal and lobular breast cancers and its relationship with prognostic parameters(Tubitak Scientific & Technical Research Council Turkey, 2013) Erdem, Havva; Oktay, Murat; Uzunlar, Ali Kemal; Yıldırım, Ümran; Ankaralı, Handan; Yaşar, MehmetAim: The astrocyte-elevated gene-1 (AEG-1, also known as metadherin) is associated with various aspects of tumour malignancy; however, little knowledge is available related to the role of AEG-1 in ductal and lobular carcinomas. The aim of this study was to investigate the relationship of AEG-1 with the prognostic parameters in invasive ductal and lobular carcinomas. Materials and methods: This study was conducted on a total of 72 paraffin-embedded breast tumour samples. They consisted of 61 ductal and 11 lobular carcinomas. Breast tumour samples were stained for AEG-1. The prognostic parameters were compared with the results of AEG-1 stains. Results: We observed that more ductal carcinoma types than lobular carcinoma types resulted in high AEG-1 staining, whereas low AEG-1 staining occurred more in lobular carcinomas than in ductal carcinomas (P = 0.05). A significant negative correlation was also found between HER-2 (r = -0.30, P = 0.019) and AEG-1 (r = -0.804, P = 0.003) in lobular carcinomas. A significant relationship was found between increasing numbers of positive lymph nodes and AEG-1 in ductal carcinoma cases (P = 0.05). Conclusion: These results are consistent with previous reports of the role of AEG-1 in tumour progression. AEG-1 could be a useful marker for the development of new treatments and resistant hormonal therapy.Öğe An aggressive Basal Cell Carcinoma with multiple focuses and distant lung metastasis: case report(2012) Erdem, Havva; Kadıoğlu, Nilüfer; Uzunlar, Ali Kemal; Yıldırım, Ümran; Oktay, Murat; Şahiner, Cem; Turan, HakanBazal hücreli karsinom (BHK) epidermisin bazal tabakasından kaynaklanan ve nonkeratinize hücrelerden oluşan en yaygın cilt tümörüdür. Dev BHK (yani çapı 5 cmden büyük) oldukça nadirdir ve tüm BHKların %0,5 ini oluşturmaktadır. BHK insidansı yüksek olmasına rağmen, bu tümörün metastaz oranı tüm vakaların %0,0028-%0,55 arasında değişmektedir. Bu vakada tümör dev boyuta ulaştı ve akciğer metastazı vardı. Burada, BHKlar genellikle yavaş seyirli olmasına rağmen gerekli vakalarda yeterli cerrahi ve kemoradyoterapinin önemini vurgulamak istedik.Öğe Alterations in placental pendrin expression in pre-eclampsia(Informa Healthcare, 2014) Karataş, Ahmet; Erdem, Havva; Albayrak, Mustafa; Oktay, Murat; Özlü, Tülay; Çakmak, Bülent; Dönmez, Melahat EmineIntroduction: Pendrin is an integral membrane protein and plays a key role in extracellular fluid volume and blood pressure control. We aimed to investigate the relationship between pendrin immunostaining intensity in normal and pre-eclamptic placental tissue. Methods: Fifty-six placental tissues, of which 26 were in pre-eclamptic, and 30 were in control group were evaluated by immunohistochemical staining. Positive immunostaining was evaluated using a semiquantitative score: 0, negative; +, mild; ++, moderate; and +++, intense. Results: There was more positive immunstaining in the pre-eclamptic placenta compared to the controls (p<0.001). A significant positive correlation was observed between immunostaining level and diastolic blood pressure (r = 0.533, p = 0.005) in the pre-eclamptic group. However, no significant correlation was observed between any condition and immunostaining level in the control group. Conclusions: Placentas in the pre-eclamptic group were significantly more immunostained with pendrin than were those in the control group. In addition, a positive correlation between immunostaining intensity with pendrin and both systolic and diastolic blood pressure were observed. Pendrin may play a role in the mechanism of severe hypertension in women with pre-eclampsia.Öğe Anormal uterin kanamalı hastalarda endometrium kanseri ve benign endometrial patoloji tanısı alanların hematolojik parametrelerinin karşılaştırılması(2014) Yavuzcan, Ali; Çağlar, Mete; Erdem, Havva; Oktay, Murat; Üstün, Yusuf; Dilbaz, Serdar; Kumru, SelahattinAmaç: Çalışmamızın amacı 40 yaş ve üstünde anormal uterin kanama (AUK) şikayeti bulunan hastalarda evre 1 ve evre 2 endometrium kanseri tanısı alanlar ile benign endometrial patoloji tanısı alanların ortalama trombosit hacmi (MPV), nötrofil/lenfosit oranı (NLR) ve trombosit/lenfosit oranı (PLR) değerlerini karşılaştırmaktır. Yöntem: Çalışmamıza Temmuz 2012-Temmuz 2013 tarihleri arasında Düzce Üniversitesi Tıp Fakültesi Kadın Hastalıkları ve Doğum Anabilim Dalı’na AUK ön tanısıyla histeroskopi, dilatasyon küretaj yada endometrial biopsi ile endometrial örnekleme yapılan hastalar dahil edilmiştir. Hastalara ait bilgiler retrospektif olarak hasta dosyaları incelenerek elde edilmiştir. Bulgular: Hastaların ortalama yaşı 52.8111.47 yıl olarak bulunmuştur. Hastaların %37.1’si menopozdadır. Yapılan endometrial örneklemelerin sonucunda hastalardan 10 tanesinde (%14.2) endometrioid tip endometrial adenokarsinom, 1 tanesinde (%1.4) seröz papiller karsinom ve 1 tanesinde (%1.4) endometrial stromal sarkom tanısı konulmuştur. Hastaların 58 (%83) tanesinde non invaziv benign endometrial değişiklikler tespit edilmiştir. Endometrium kanseri saptanan ve saptanmayan hastalar arasında MPV,NLR ve PLR değerleri açısından istatistiksel olarak anlamlı farklılık tespit edilmemiştir (p0.148; p0.775 ve p0.942 sırasıyla). Sonuç: MPV, NLR ve PLR değerlerinin ileri evre endometrial malignitelerde yükseldiği ve prognostik bir faktör olarak kullanılabileceği bazı çalışmalarda gösterilmiştir. Ancak bu parametrelerin erken evre endometrium kanseri ve benign endometrial patoloji tespit edilen hastalar arasında gösterdiği değişimlerin net olarak ortaya konabilmesi için geniş kapsamlı yeni çalışmalara gerek duyulmaktadır.Öğe Apoptozis Hakkında Bilinenler (Literatür Taraması)(2012) Eröz, Recep; Karataş, Ahmet; Alkoç, Ozan Alper; Baltacı, Davut; Oktay, Murat; Çolakoğlu, SerdarCanlı organizmalarda organogenezisten, çeşitli hastalıklara kadar birçok mekanizmada rol alan apoptozis, en çok dikkat çeken ve üzerinde çok sayıda araştırmaların yapıldığı bilinmesi gereken önemli bir mekanizmadır. Biz bu derlemede apoptozis ile ilgili bilinenleri okuyuculara sunmaya çalıştık.Öğe Are there any effects of chronic carbon monoxide exposure on argyrophilic nucleolar-organizing region-associated protein synthesis in rat myocardium?(Sage Publications Ltd, 2016) Sarıtaş, A.; Güneş, Harun; Çolakoğlu, Serdar; Eröz, Recep; Aköz, Ayhan; Oktay, Murat; Özkan, A.The aims of the study are to detect whether there are any possible effects of chronic carbon monoxide (CO) exposure on the argyrophilic nucleolar-organizing region (AgNOR)-associated protein synthesis and evaluate any possible relationship between the amount of AgNOR protein and the level of myocardial injury also and between AgNOR and histopathological evaluation methods. Adult male albino Wistar rats (n = 18) were randomly divided into three groups (groups A, B, and C). Group A served as control, while groups B and C were rats exposed to CO gas chrbnically (1000 and 3000 ppm CO concentration with a flow rate of 4 L/min for 30 min/day for 7 days, respectively). Total AgNOR area/nuclear area (TAA/NA) and the mean AgNOR numbers for each myocyte nucleus were determined. There were significant differences among all groups for TAA/NA ratio. These differences were not significant for mean AgNOR numbers. According to the histopathological evaluation scores, there were significant differences between the groups. The differences were significant among the groups for loss of sarcomere pattern. A strong positive correlation between histopathological injury scores and TAA/NA ratio was found (R-sq = 0.48; p = 0.002), however, the correlation was not significant for mean AgNOR numbers (R-sq = 0.08; p = 0.25). In conclusion, TAA/NA ratio can be used as an indicator for obtaining information about the level of myocardial damage instead of histopathological evaluation scores.Öğe Argyrophilic nucleolar organizing region associated protein synthesis for cytologic discrimination of follicular thyroid lesions(Informa Healthcare, 2015) Oktay, Murat; Eröz, Recep; Oktay, N.A.; Erdem, Havva; Başar, Feyza; Akyol, L.; Bahadır, AnzelFine needle aspiration biopsy (FNAB) of the thyroid gland is an important tool for preoperative diagnosis; however, its benefit is limited for follicular lesions. Nucleolar organizer regions (NORs) are ribosomal gene regions that stain with silver (Ag) when they are active. These regions can be used to differentiate neoplastic and non-neoplastic lesions. We used a new AgNOR technique to investigate FNAB of cases diagnosed as follicular adenoma and carcinoma. Fourteen cases of follicular thyroid carcinoma (FTC) and 28 cases of thyroid follicular adenomas (FA) were stained using the silver NOR-associated protein (AgNOR) technique. One hundred nuclei per sample were examined, AgNORs were counted, and the total AgNOR area/nuclear area (TNORa/Na) ratio of each cell was calculated. We found that cases with FTC had significantly higher TNORa/Na than cases of FA. Also, cases with FTC had significantly higher AgNOR counts than cases with FA. AgNOR counting may help discriminate FTC and FA by routine cytopathology before surgery.Öğe Can argyrophilic nucleolar organizing region-associated protein amount be used for the detection of cardiac damage?(Sage Publications Ltd, 2016) Kandiş, Hayati; Afacan, Mustafa Ahmet; Eröz, Recep; Çolakoğlu, Serdar; Bayramoğlu, Ayşegül; Oktay, MuratIntroduction: Carbon monoxide (CO) is a colorless, tasteless, odorless, nonirritant gas and CO poisoning affects all organ systems. Aim: We aimed to detect any possible effects of CO exposure on the argyrophilic nucleolar organizing region (AgNOR)-associated protein synthesis of heart cells and whether there is any relationship between AgNOR protein amount and both carboxyhemoglobin (COHb) level and histopathological evaluation methods used for the detection of damage in heart tissue after CO exposure. Materials and Methods: The rats were divided into four groups (control, 1000, 3000, and 5000 ppm), each containing six rats. After CO intoxication, COHb levels were measured and the animals were killed on the 7th day. AgNOR staining was performed in the heart tissue. One hundred nuclei per rat were evaluated, and total AgNOR area/nuclear area and mean AgNOR number were analyzed for each nucleus. The CO exposure groups had significantly higher AgNOR values than the control group (p < 0.0001). According to cardiomyopathy (CMY) scoring methods, the differences between groups 3 and 4 and groups 1 and 2 were significant (p < 0.05). A significant positive correlation between AgNOR values and both CMY and COHb levels were detected. Conclusion: The detection of AgNOR protein amount may give information about the CMY levels and be used to detect the CO intoxication levels instead of COHb in later periods.Öğe Comparison of fine needle aspiration biopsy and paraffin embedded tissue sections for measuring AgNOR proteins(Taylor & Francis Ltd, 2015) Taşdemir, Şener; Eröz, Recep; Cücer, Nurhan; Oktay, Murat; Türkeli, M.Paraffin embedded tissue sections and fine needle aspiration biopsy (FNAB) are important methods for diagnosis. We compared thyroid tissue obtained by FNAB to paraffin embedded sections to determine whether there were differences in detection of the amounts of argyrophilic nucleolar organizing region (AgNOR) proteins. Twenty-two patients with papillary thyroid carcinoma were included in the study. Slides were prepared with both FNAB tissue and 3 mu m sections of paraffin embedded tissue, and stained for AgNOR. One hundred nuclei per individual were evaluated; total AgNOR number/nucleus (TAn/TNn) and total AgNOR area/nuclear area (TAa/TNa) of individual cells were determined. Mean TAn/TNn and TAa/TNa values were 4.800 +/- 1.118 and 13.382 +/- 2.612, respectively, for FNAB samples; corresponding values were 2.406 +/- 0.649 and 8.49 +/- 0.893, respectively, for paraffin embedded sections. The differences between FNAB materials and paraffin embedded tissue sections were significant for the mean TAn/TNn and TAa/TNa values. Significant differences in the amounts of AgNOR protein detected were found between FNAB and paraffin embedded tissue sections.Öğe Correlation of astrocyte elevated gene-1, basic-fibroblast growth factor, beta-catenin, Ki-67, tumor necrosis factor-alfa with prognostic parameters in ductal carcinomas and ductal intraepithelial neoplasms(Medknow Publications & Media Pvt Ltd, 2015) Erdem, Havva; Gündoğdu, Betül; Ankaralı, Handan; Yaşar, Mehmet; Şener, Ebru; Oktay, Murat; Şahiner, CemBackground: Breast cancer is the second most frequent cancer in the world. Although it is widely accepted that the etiology of breast cancer includes both genetic and environmental factors, the molecular mechanism of its development and progression remains poorly understood, and thus far, no specific signature of breast cancer gene expression has been reported to allow for patient-tailored therapy strategies. Hence, it is of great clinical value to further understand the molecular mechanisms underlying the progression of breast cancer and to identify effective early markers for the diagnosis and prognosis of the disease as well as novel therapeutic targets. Materials and Methods: This study was conducted on a total of 90 paraffin-embedded breast tumor samples. Immunohistochemical stains for astrocyte elevated gene-1 (AEG-1), basic-fibroblast growth factor (b-FGF), beta-catenin, Ki-67, tumor necrosis factor- (TNF-) were performed on tissue microarray using standard procedures. Each patient age, grade, estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER-2) status, size, lymphovascular invasion, metastasis of lymph node (LNM), nipple and ductal hyperplasia areas were assessed. Results: We observed significant relationship between the age and LNM or FGF (P = 0.018, 0.035, respectively). The relationship between histological and nuclear grade, LNM, ER, PR, HER-2 and prognostic parameters was evaluated in cases of ductal carcinomas (DC). There was a significant positive correlation between TNF-, size, LNM (P % 0.0001, 0.002, 0.005). We found that significant relationship between AEG-1 and TNF-. There was a significant positive correlation between FGF and Ki-67 and negative correlation AEG-1. Although, FGF, TNF-, AEG-1 staining in DC were observed higher than ductal intraepithelial neoplasms, this observation could not statistically (P >= 0.05). Conclusions: The present work aims to investigate the relationship between the expression of AEG-1, b-FGF, beta-catenin, Ki-67, TNF- other prognostic parameters in DC and ductal intraepithelial neoplasm. We found a relationship between these factors.Öğe Dermal absorption and toxicity of alpha amanitin in mice(Informa Healthcare, 2014) Kaya, Ertuğrul; Sürmen, Mustafa Gani; Yaykaşlı, Kürşat Oğuz; Karahan, Selim; Oktay, Murat; Turan, Hakan; Erdem, HavvaThe fungus Amanita phalloides is known to contain two main groups of toxins: amanitins and phallotoxins. The amanitins group effectively blocks the RNA polymerase II enzyme found in eukaryotic cells. As alpha amanitin has a lethal effect on the majority of eukaryotic cells, it can be valuable as an antiparasitic or antifungal drug. It can be used externally against ectoparasites. It is critical that percutaneous applications of the alpha amanitin toxin are not harmful to the recipient. In this study, the absorption and the toxicity of percutaneous and intraperitoneal (ip) applications of 1 mg/kg alpha amanitin to mice were compared. Potential skin, liver and kidney toxicities were investigated through pathological examination. HPLC analysis was used to determine the amount of the toxin. No toxicity or toxin were found in the skin, liver, or kidneys of the mice in the control group. Interestingly, the percutaneous application group also showed no toxicity, and the toxin was not present in this group. After 24 h, Councilman-like bodies and pyknotic cells were observed in the mice in which alpha amanitin was applied intraperitoneally, demonstrating the presence of toxicity. Peak levels of alpha amanitin (mu g/mL) in the liver, kidney, and blood in the ip application group were measured at 3.3 (6 h), 0.2 (6 h) and 1.2 (1 h), respectively. The results demonstrated that the toxin was not absorbed through the skin of the mice and that the percutaneous application of alpha amanitin did not have any toxic effects. Thus, alpha amanitin may be administered percutaneously for therapeutic purposes.Öğe Effect of combined anti-inflammatory and antioxidant therapy on ischemia-reperfusion injury in rat ovary: an experimental study(E-Century Publishing Corp, 2016) Kaya, Murat; Özkan, Aybars; Eröz, Recep; Soyer, Tutku; Kabaklıoğlu, Murat; Oktay, Murat; Küçük, AdemAn experiemental study was performed to evaluate the effect of combined anti-inflammatory and antioxidant theraphy on ischemia-reperfusion injury in rat ovary. Also the results of combined theraphy is aimed to compared with monotherapy. Fifty-four female Wistar rats were randomly divided into 9 equal groups (n=6). In Sham group right ovaries of the rats were sampled without generating ischemia and reperfusion injury via median laparatomy. Ischemia/Reperfusion (I/R) was performed by clamping the vascular supply of right ovary for 3 hours (I/R 1 group) and 6 hours (I/R 2 group), respectively. After one hour reperfusion, rats recieved 20 mg/kg Methylprednisolone (Pred 1; 3 hours ischemia and Pred 2; 6 hours ischemia) and 50 mg/kg Vitamin C (Vit C 1; 3 hours ischemia and Vit C 2; 6 hours ischemia). The combined therapy groups (Pred+Vit C 1 and Pred+Vit C 2) were adminstered same doses of both Methylprednisolone and Vitamin C. Rats were sacrifed after 24 hours of reperfusion and ovarian tissues were sampled for oxidative markers [malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx)] biochemically. Histopathological findings of inflammation (follicular cell degeneration, vascular congestion, hemorrhage and infiltration by inflammatory cells) were also evaluated with an injury score grading normal findings to severe injury (Grade 0 to 3). The results were compared among groups. Mean levels of antioxidant enzymes and histopathologic grades showed significant difference among groups (P<0.05). MDA and CAT levels were lower in Pred+Vit C 1 than Pred 1, Vit C 1 and I/R 1 (P<0.05). SOD and CAT levels were lower in Pred+Vit C 2 than Pred 2 and I/R 2. Total injury scores were lower in Pred+Vit C 1 and Pred+Vit C 2 than I/R 1 and I/R 2 (P<0.05). The combined treatment of anti-oxidant and anti-inflammatory theraphy reduces the biochemical and histopathologic findings of I/R injury in rat ovary. These results are significantly comparable with the effect of monotheraphy.Öğe The effect of etanercept on Spinal epidural Fibrosis in a Postlaminectomy Rat Model(2014) Türkoğlu, Erhan; Tuncer, Cengiz; Dinç, Cem; Serbes, Gökhan; Oktay, Murat; Şekerci, ZekiAMAÇ: Posterior spinal cerrahi sonrası duramatere yapışık epidural fibrozis formasyonu vücudun cerrahiye karşı vermiş olduğu normal bir reaksiyondur. Aşırı epidural fibrozis postlaminektomi sendromuna yol açan önemli nedenlerden biridir. Etanersept tümör nekrozis faktör alfayı inhibe ederek fibroblast migrasyonunu engeller ve sonuç olarak fibrozis gelişmesini önler. Bu çalışmanın amacı; topikal uygulanan etanerseptin rat laminektomi modelinde gelişen epidural fibrozis üzerine etkisini araştırmaktır. YÖNTEM ve GEREÇLER: 24 Wistar rat rastgele ve eşit olarak üç gruba (Kontrol, spongostan ve etanersept) ayrıldı. Bütün ratlara L3-L5 laminektomi yapıldı. Spongostana emdirilmiş salin (0.1mg/kg) ve etanersept (300 µg/kg) direkt duramatere uygulandı ve duramater üzerinde bırakıldı. 4 hafta sonra ratların T10-L5 arası omurgaları enblok olarak çıkartılarak, epidural fibrozis ve araknoidal tutulum histopatolojik olarak incelendi ve derecelendirildi. BULGULAR: Kontrol grubu ile karşılaştırıldığında topikal uygulanan etanersept grubunda epidural fibrozisin istatistiksel olarak anlamlı derecede azaldığı görüldü (p0.05). SONUÇ: Çalışmamız; topikal uygulanan etanerseptin laminektomi yapılmış ratlarda gelişen epidural fibrozisin azaltılmasında etkili olduğunu göstermiştir.Öğe The Effect of Etanercept on Spinal Epidural Fibrosis in a Postlaminectomy Rat Model(Turkish Neurosurgical Soc, 2014) Türkoğlu, Erhan; Tuncer, Cengiz; Dinç, Cem; Serbes, Gökhan; Oktay, Murat; Şekerci, ZekiAIM: The formation of epidural fibrosis adjacent to the dura mater after posterior spinal surgery is a normal reaction of the body to surgery. Extensive epidural fibrosis is one of the important causes of postlaminectomy syndrome. Etanercept inhibits tumor necrosis factor-alpha and decreases fibroblast migration. Thus, etanercept prevents the formation of fibrosis. The aim of this study was to investigate the effects of topical application of etanercept on epidural fibrosis after laminectomy in a rat model. MATERIAL and METHODS:Twenty-four Wistar rats were equally and randomly divided into three groups (control, spongostan and etanercept). Laminectomy was performed between L3 and L5 in all the rats. Spongostan soaked with saline (0.1 mg/kg) and etanercept (300 mu g/kg) was directly exposed to and left on the dura mater. Four weeks later, the vertebral columns of the rats were removed en bloc between T10 and L5, and epidural fibrosis and arachnoidal involvement were evaluated and graded histopathologically. RESULTS: Our data revealed that epidural fibrosis was reduced significantly in the rats treated with etanercept, compared to the control groups (p<0.05). CONCLUSION: Our study demonstrated that topical application of etanercept can be effective in reducing epidural fibrosis in rats after laminectomy.Öğe Effect of parental pressure on emergency physicians for computerized tomography imaging request in children with head trauma(W B Saunders Co-Elsevier Inc, 2021) Bogan, Mustafa; Sabak, Mustafa; Oktay, Murat; Gumusboga, Hasan; Aykol, EmineBackground: Both minor and major head traumas constitute an important proportion of childhood emergency admissions. In this study, the findings of cranial computed tomography (CCT) scans performed as a result of the parental pressure were evaluated. Methods: The frequency and findings of CCT scans performed as a result of parental pressure were examined in a separate subgroup. Results: A total of 227 patients were included in the study; 158 (69.9%) patients had undergone CCT scans; a pathological finding was detected in 24 (10.6%) of these patients and undergone a consultation by the neurosurgeon (most common finding was isolated linear fracture; n = 12; 50%). The patients undergoing CCT scans were divided in two subgroups: the PECARN group [n = 123 (77.8%)] and the Parental pressure group [n = 33 (22.2%)]. Conclusion: One third of the parents of children who presented to the emergency department with head trauma and had no indication for CCT according to PECARN rules insisted on CCT imaging, and none of these cases showed ciTBI, surgical operation, or mortality. None of the patients in the parental pressure group had a history of surgical intervention or mortality within one month after discharge. (c) 2020 Elsevier Inc. All rights reserved.Öğe The effects of desert dust storms, air pollution, and temperature on morbidity due to spontaneous abortions and toxemia of pregnancy: 5-year analysis(Springer, 2021) Bogan, Mustafa; Al, Behcet; Kul, Seval; Zengin, Suat; Oktay, Murat; Sabak, Mustafa; Bayram, HasanEpidemiological studies have suggested an association between particulate air pollution, increased temperatures, and morbidity related to pregnancy outcomes. However, the roles of desert dust storms and climatological factors have not been fully addressed. The objectives of the present study were to investigate the association between desert dust storms, particulate matter with a diameter <= 10 mu m (PM10), daily temperatures, and toxemia of pregnancy and spontaneous abortion in Gaziantep, South East Turkey. The study was conducted retrospectively at emergency department of two hospitals in Gaziantep city. Data from January 1, 2009, to March 31, 2014, were collected. Patients, who were diagnosed with toxemia of pregnancy and spontaneous abortion by radiological imaging modalities, were included in the study. Daily temperature ranges, mean temperature values, humidity, pressure, wind speed, daily PM10 levels, and records of dust storms were collected. A generalized additive regression model was designed to assess variable effects on toxemia of pregnancy and spontaneous abortion, while adjusting for possible confounding factors. Our findings demonstrated that presence of dust storms was positively associated with the toxemia of pregnancy both in outpatient admissions (OR=1.543 95% CI=1.186-2.009) and inpatient hospitalizations (OR=1.534; 95% CI=1.162-2.027). However, neither PM10 nor maximum temperature showed a marked association with spontaneous abortion or toxemia of pregnancy in our study population. Our findings suggest that desert dust storms may have an impact on the risk for adverse pregnancy outcomes such as toxemia of pregnancy. Health authorities should take necessary measures to protect pregnant women against detrimental effects of these storms.Öğe Effects of erdosteine on alpha amanitin-induced hepatotoxicity in mice(Taylor and Francis Ltd, 2016) Kaya, Ertuğrul; Yılmaz, İsmail; Admış, Özlem; Oktay, Murat; Bayram, Recep; Bakırcı, Sinan; Çolakoğlu, SerdarThe aim of this study was to investigate beneficial effects of erdosteine in the alpha amanitine-induced hepatotoxicity in mice. Three hours after giving alpha amanitin (0.5 mg/kg, i.p.) to the mice, they were administered silibinin (50 mg/kg/d, i.p.) or erdosteine (100 mg/kg/d, oral) therapies once a day for 3 d. A histopathological examination of their liver tissues was carried out 24 h after the last treatment; transaminase levels, blood urea nitrogen, urea, and creatinine were analyzed in serum. Erdosteine showed a beneficial effect by significantly improving the functional parameters particularly in alpha amanitin-induced hepatotoxicity and partially in renal toxicity. In the histopathological evaluation, the toxicity that was generated with alpha amanitin was significantly reduced by erdosteine, showing a possible hepatoprotective effect. © 2016 Informa UK Limited, trading as Taylor & Francis Group.Öğe Erythropoietin stimulates patellar tendon healing in rats(Elsevier Science Bv, 2015) Uslu, Mustafa; Kaya, Ertuğrul; Yaykaşlı, Kürşat Oğuz; Oktay, Murat; İnanmaz, Mustafa Erkan; Işık, Cengiz; Kandiş, HayatiBackround: Erythropoietin (EPO), regulating erythropoiesis, is used to provide protective and regenerative activity in non-haematopoietic tissues. There is insufficient knowledge about the role of EPO activity in tendon healing. Therefore, we investigated the effect of EPO treatment on healing in rat patellar tendons. Methods: One hundred and twenty-six, four-month-old male Sprague-Dawley rats were randomly assigned to three experimental groups: 1, no treatment; 2, treatment with isotonic saline (NaCl) and 3, treatment with EPO. Each group was randomly subdivided into two groups for sacrifice at three (1a, 2a, 3a) or six weeks (1b, 2b, 3b). Complete incision of the left patellar tendon from the distal patellar pole was performed. We applied body casts for 20 days after the incised edges of the patellar tendon were brought together with a surgical technique. Both legs were harvested and specimens from each group underwent histological, biomechanical, and protein mRNA expression analyses. Results: There were statistically significant differences in the ultimate breaking force between the EPO group and others at both weeks three and six (p<0.05); significant differences in fibroblast proliferation, capillary vessel formation, and local inflammation were found between groups 1 a and 3a, and 2a and 3a (p<0.05). There were statistical differences between la, 3a and 2a, 3a for Col III, TGF-beta 1, and VEGF and between 1b, 3b and 2b, 3b for Col I, Col III, TGF-beta 1, and VEGF mRNA expressions. Conclusion: EPO had an additive effect with surgery on the injured tendon healing process in rats compared to the control groups biomechanically, histopathologically and with tissue protein mRNA expression. (C) 2015 Elsevier B.V. All rights reserved.Öğe Evaluation of Argyrophilic Nucleolar Organizing Region-Associated Protein Synthesis in Femoral Muscle Cells of Rats Exposed to 3000 ppm Carbon Monoxide Gas(Duzce Univ, 2016) Eröz, Recep; Sarıtaş, Ayhan; Çolakoğlu, Serdar; Oktay, Murat; Kandiş, HayatiObjective: Carbon monoxide (CO) is a colorless, tasteless, odorless, and nonirritant gas and it causes tissues hypoxia due to decreasing oxygen carrying capacity. Nucleolar-organizing regions (NORs) are genetic loci on chromosomes and they can be stained with silver when they are active. In this study, we aimed to investigate any possible effects 3000 ppm CO exposure on the NOR protein synthesis in femoral muscle cells of rats. Method: The animals were divided into 2 groups as control (C) and 3000 ppm CO exposed group. One week after exposure to CO, the animals were anesthetized and femoral muscle tissues were obtained. Then mean argyrophilic NOR (AgNOR) number and total AgNOR area/nuclear area (TAA/NA) were detected in femoral muscle cells for each rat. Results: There were significant differences between control group and 3000 ppm CO exposed group for mean AgNOR number (Z=-6.407 and p=0.000) and TAA/NA ratio (Z=-7.718 and p=0.000). Conclusion: It was detected that there were a possible effects of CO exposure on the AgNOR proteins amounts in femoral muscle cells of rats.Öğe EXPRESSION OF AEG-1 AND P53 AND THEIR CLINICOPATHOLOGICAL SIGNIFICANCE IN MALIGNANT LESIONS OF RENAL CELL CARCINOMAS: A MICROARRAY STUDY(Vesalius Univ Medical Publ, 2013) Erdem, Havva; Oktay, Murat; Yıldırım, Ümran; Uzunlar, Ali Kemal; Kayıkçı, M. AliThe aim of this study was to investigate the relationship of AEG-1 and p53 with the prognostic parameters of renal cell carcinoma (RCC). In this study, 50 paraffin blocks were histopathologically diagnosed at the Department of Pathology of the Medical Hospital of Duzce University, between 2005 and 2011. The cases consisted of 24 clear cell (CC) and 26 non-clear cell (NCC) RCC subtypes as follows: 24 (48%) clear cell RCC, 12 (24%) papillary RCC, 4 (8%) multilocular cystic RCC and 10 (20%) chromophobe RCC; none had sarcornatoid changes. By immunohistochemical analysis we investigated AEG-1 and p53 expression in carcinomas of the kidney, and by statistical analysis determined their relationship with clinicopathological parameters. Significant relationships were found between increasing tumor diameter and the increase of p53 (p = 0.028). In addition, p53 was significantly related to renal sinus invasion (p = 0.05) and Fuhrman grade (p = 0.026). There was a significant relationship between increased AEG-1 staining scores and CC and NCC carcinoma subtypes (p = 0.032), tumor capsule invasion (p = 0.01) and lymphovascular invasion (p = 0.015). There was also a significant correlation between tumor size and capsule and lymphovascular invasion (p = 0.02). We concluded that high AEG-1 and p53 expression correlates with the prognostic parameters in RCC patients, and in addition may be associated with tumor progression.
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