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  • Küçük Resim Yok
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    Effects of lemon essential oil aroma on the learning behaviors of rats
    (Riyadh Armed Forces Hospital, 2010) Ogeturk, Murat; Kose, Evren; Sarsilmaz, Mustafa; Akpinar, Burhan; Kus, Ilter; Meydan, Sedat
    [Abstract Not Available]
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    Hepatotoxic activity of toluene inhalation and protective role of melatonin
    (Sage Publications Inc, 2011) Tas, Ufuk; Ogeturk, Murat; Meydan, Sedat; Kus, Ilter; Kuloglu, Tuncay; Ilhan, Necip; Kose, Evren
    This study was designed to investigate the harmful effects of toluene inhalation in the liver of rats and possible protective effects of melatonin on these detrimental effects. For this purpose, 21 adult male Wistar-albino rats were randomly divided into three equal groups. Animals in group I were used as control. The rats in group II were exposed to toluene (3000 ppm/1 hour/day) for 4 weeks, while the rats in group III were treated with melatonin (10 mg/kg/day, intraperitoneally [ip]) plus toluene inhalation. At the end of the experimental period, liver and blood samples were taken from the decapitated animals. Serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), total bilirubin and albumin levels were determined. Liver tissue sections were stained with routine histological methods and examined under the light microscope. In addition, the sections were immunohistochemically stained using avidin-biotin-peroxidase method for determination of apoptosis. The liver tissue activities of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), catalase (CAT) and malondialdehyde (MDA) levels were also measured. Toluene inhalation significantly increased serum ALT, AST and tissue MDA, and decreased serum albumin, but did not affect serum ALP, total bilirubin levels and tissue SOD, GSH-Px and CAT activity when compared with controls. The increases in tissue MDA and serum ALT and AST levels induced by toluene inhalation were significantly inhibited by melatonin treatment. In light microscopic observations of tissues from toluene-inhaled rats, massive hepatocyte degeneration, ballooning degeneration and mild pericentral fibrosis were observed. Bax immune reactivity was also increased significantly. Melatonin treatment decreased the balloon degeneration, fibrosis and Bax immune reactivity in the liver of toluene-inhaled rats. In view of the present findings, it is suggested that melatonin has hepatoprotective effects against toluene toxicity via primarily antioxidative properties.
  • Küçük Resim Yok
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    The protective effects of caffeic acid phenethyl ester against toluene-induced nephrotoxicity in rats
    (Sage Publications Inc, 2016) Meydan, Sedat; Nacar, Ahmet; Ozturk, Hasan Oktay; Tas, Ufuk; Kose, Evren; Zararsiz, Ismail; Yilmaz, Nigar
    Caffeic acid phenethyl ester (CAPE) has antioxidant and anti-inflammatory properties. The aim of this study is to examine the negative effects of toluene on kidney tissues and functions and to investigate the protective effects of CAPE against toluene-induced nephrotoxicity in rats. A total of 21 male Wistar rats were divided into three groups of equal number in each. The rats in group I were the controls. Toluene was intraperitoneally injected into the rats in group II with a dose of 500 mg/kg. Rats in group III received CAPE daily while exposed to toluene. After 14 days of experimental period, all rats were killed by decapitation. Enzymatic activities of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT) and malondialdehyde (MDA) levels were studied in the rat kidneys. Blood urea nitrogen (BUN) and serum creatinine levels were measured for renal function. The CAT and SOD enzyme activities and serum creatinine levels were significantly increased in rats treated with toluene when compared with the controls. But GSH-Px activity, MDA, and BUN levels showed statistically nonsignificant changes. However, increased CAT and SOD enzyme activities and decreased serum creatinine levels were detected in the rats that received CAPE while exposed to toluene. The GSH-Px activity and MDA and BUN levels in the same group did not show statistically significant changes. The results of our study demonstrated that toluene damages kidney tissue and is a nephrotoxic substance. CAPE was able to prevent the renal damage as antioxidant, antitoxic, and nephroprotective agent.
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    Solunum yoluyla formaldehit ve lavanta uygulanan sıçan teslislerinin değerlendirilmesi; bir histolojik çalışma
    (İnönü Üniversitesi Tıp Fakültesi Dergisi, 2010) Köse, Evren; Sarsılmaz, Mustafa; Meydan, Sedat; Pekmez, Hıdır; Dabak, Durrin Özlem; Kavaklı, Ahmet; Ögetürk, Murat
    Öz: Amaç: Çalışmamızda, solunum yolu ile uygulanan formaldehit’in sıçan testislerinde yaptığı hasar histolojik olarak araştırıldı. Aynı zamanda, bu hasarlara karşı aromaterapi uygulamalarında sık kullanılan lavanta yağının muhtemel koruyucu etkileri de incelendi. Gereç-Yöntem: Bu amaçla, 21 adet Wistar-Albino cinsi erkek sıçan kullanıldı. Grup I’deki sıçanlar kontrol olarak kullanılırken, Grup II’deki sıçanlar, 35 gün boyunca solunum yoluyla formaldehit’e (10 ppm/1saat) maruz bırakıldı. Grup III’deki sıçanlara ise formaldehit uygulamasının yanı sıra saf lavanta yağı (1ml/1saat) yine solunum yoluyla verildi. Uygulama sonunda hayvanlar sakrifiye edildi ve histolojik incelemeler için testisler çıkarıldı. Çalışmada, tubuli seminiferi contorti çapları, Leydig hücre sayıları ve çekirdek hasarlı Leydig hücreleri incelendi. Bulgular: Formaldehit’e maruz kalan sıçanlar kontrol grubu ile karşılaştırıldığında, tubül çapları ve Leydig hücre sayılarında azalma, çekirdek hasarlı Leydig hücrelerinde ise artma tespit edildi. Ayrıca tubül duvarlarında atrofik değişiklikler gözlendi. Formaldehit maruziyetiyle birlikte lavanta yağı uygulanan grupta ise, formaldehit maruziyetine bağlı olarak testiste gelişen histolojik değişikliklerin düzelmiş olduğu belirlendi. Sonuç: Solunum yolu ile formaldehit maruziyetine bağlı olarak testiste önemli histolojik hasarların meydana geldiği ve bu hasarlara karşı lavanta yağının koruyucu özellik gösterdiği tespit edildi. Başlık (İngilizce): The histological evaluation of the testes of rats which applied formaldehyde and lavender oil Öz (İngilizce): Aim: In our study, harmful effects of formaldehyde (FA) inhalation on the testes were investigated histologically. In addition, the possible protective effects of lavender oil which often used in aromatherapy, were examined against these damages. Material-Methods: For this purpose, 21 albino-Wistar rats were used. The rats of group I was used as control group. The rats of group II were exposed FA (10 ppm/ 1hour) for 35 days. The rats of group III inhaleted lavender oil (1ml/1 hour) with FA. At the end of the experiment, all rats were sacrified and testes were removed for histological examination. In this examination, the diameters of seminiferous tubul, Leydig cells and Leydig cells with damaged nucleus were determined. Results: When the rats were exposed to formaldehyde compared with the control group, it was determined that the diameter of tubuls and number of Leydig cells were decreased and Leydig cells with damaged nucleus were increased. And also it was seen that there were atrophic changes in the tubuls. In the group in which the lavender oil was applied with formaldehyde exposure it was determined that the histological changes of testes occured via FA exposure were improved. Conclusion: It was shown that harmful effects of FA on testes occured via formaldehyde exposure and lavender oil have protective effects to the these damages.
  • Küçük Resim
    Öğe
    Solunum Yoluyla Formaldehit ve Lavanta Uygulanan Sıçan Testislerinin Değerlendirilmesi; Bir Histolojik Çalışma
    (İnönü Üniversitesi Tıp Fakültesi Dergisi, 2010) Köse, Evren; Sarsılmaz, Mustafa; Meydan, Sedat; Pekmez, Hıdır; Dabak, Durrin Özlem; Kavaklı, Ahmet; Ögetürk, Murat
    Çalışmamızda, solunum yolu ile uygulanan formaldehit’in sıçan testislerinde yaptığı hasar histolojik olarak araştırıldı. Aynı zamanda, bu hasarlara karşı aromaterapi uygulamalarında sık kullanılan lavanta yağının muhtemel koruyucu etkileri de incelendi. Gereç-Yöntem: Bu amaçla, 21 adet Wistar-Albino cinsi erkek sıçan kullanıldı. Grup I’deki sıçanlar kontrol olarak kullanılırken, Grup II’deki sıçanlar, 35 gün boyunca solunum yoluyla formaldehit’e (10 ppm/1saat) maruz bırakıldı. Grup III’deki sıçanlara ise formaldehit uygulamasının yanı sıra saf lavanta yağı (1ml/1saat) yine solunum yoluyla verildi. Uygulama sonunda hayvanlar sakrifiye edildi ve histolojik incelemeler için testisler çıkarıldı. Çalışmada, tubuli seminiferi contorti çapları, Leydig hücre sayıları ve çekirdek hasarlı Leydig hücreleri incelendi. Bulgular: Formaldehit’e maruz kalan sıçanlar kontrol grubu ile karşılaştırıldığında, tubül çapları ve Leydig hücre sayılarında azalma, çekirdek hasarlı Leydig hücrelerinde ise artma tespit edildi. Ayrıca tubül duvarlarında atrofik değişiklikler gözlendi. Formaldehit maruziyetiyle birlikte lavanta yağı uygulanan grupta ise, formaldehit maruziyetine bağlı olarak testiste gelişen histolojik değişikliklerin düzelmiş olduğu belirlendi. Sonuç: Solunum yolu ile formaldehit maruziyetine bağlı olarak testiste önemli histolojik hasarların meydana geldiği ve bu hasarlara karşı lavanta yağının koruyucu özellik gösterdiği tespit edildi.