Sürdürülebilir Kalkınma Amaçları
Yayınlar
- ArticleAçık Erişim2016The effect of metamizole on ischemia/reperfusion injury in the rat ovary: An analysis of biochemistry, molecular gene expression, and histopathology
Kumbasar, Serkan; Salman, Suleyman; Al, Ragip; Ozturk, Cengiz; Yarali, Oguzhan; Alp, Hamit; Altuner, Durdu; Suleyman, Bahadir
Objectives: In this study, we investigated the effect of metamizole on ischemia/reperfusion (I/R) injury an analysis of biochemistry, molecular gene expression, and histopathology in the rat ovary of female albino Wistar rats. Materials and Methods: Animals were divided into four groups; control group with induced ischemia-reperfusion (IRC), ischemia-reperfusion +100 mg/kg metamizole sodium (MS) (IRM-100), ischemia-reperfusion +200 mg/kg MS (IRM-200), and healthy group applied sham operation (SG). Results: Myeloperoxidase (MPO) activity and gene expression increased significantly in IRC and IRM-100 group rat ovarian tissue compared with the SG group (P < 0.0001). However, MPO activity and gene expression in IRM-200 group ovarian tissue decreased significantly compared with the IRC and IRM-100 groups (P < 0.0001). Histopathologically, pronounced congestion, dilated vessels, hemorrhage, edema, degenerative cells, and neutrophil migration and adhesion to the endothelium were observed in the IRC and IRM-100 group ovarian tissues. A small number of congested dilated vessels, mild congestion, and edema were observed in the IRM-200 group, but no neutrophil migration and adhesion to the endothelium or degenerative cells. Conclusions: At 200 mg/kg dose metamizole prevented ovarian injury induced with I/R. This data show that metamizole can be used in the ovarian I/R injury treatment.
RDL Kalıcı Kaydıİncele - ArticleAçık Erişim2016Effects of nimesulide on the small intestine mucositis induced by methotrexate in rats
Arslan, Aynur; Ozcicek, Adalet; Suleyman, Bahadir; Coban, Taha Abdulkadir; Cimen, Ferda Keskin; Nalkiran, Hatice Sevim; Kuzucu, Mehmet; Altuner, Durdu; Cetin, Nihal; Suleyman, Halis
Intestinal mucositis is one of the major problems in the patients receiving cancer treatment. Nimesulide is a drug with antioxidant, antiinflammatory and antiulcer features. We aimed to investigate the effect of nimesulide on the small intestine mucositis induced by methotrexate (MTX) in rats. Experimental animals were divided into the control group, MTX group (MTXG) and nimesulide+MTX administered group (NMTXG) with eight rats per group. The control and MTXG groups were given distilled water by gavage and the NMTXG was given nimesulide 100 mg/kg orally. After one hour, the NMTXG and MTXG rat groups were administered oral MTX 5 mg/kg. This procedure was repeated once a day for 15 days and the rats were sacrificed. The duodenum and jejunum of each rat was removed for the assessment of biochemical markers and histopathological evaluation. Malondialdehyde (MDA) and myeloperoxidase (MPO) levels were significantly higher in the duodenal and jejunal tissues of the animals which received MTX, compared to the control and NMTXG (P<0.001). Also, the levels of total glutathione (tGSH), glutathione reductase (GSHRd), glutathione peroxidase (GSHPx), catalase (CAT) and superoxide dismutase (SOD) were significantly lower in the MTXG (P<0.001) compared to other groups. MTX led to villus and crypt epithelial damage and inflammation containing marked PMNL and eosinophils in the intestinal tissues histopathologically. Whereas, there was only mild irregularities in the villus structures of the NMTXG. Nimesulide protected the small intestines against damage by MTX. Intestinal mucositis caused by MTX may be preventable by co-administered nimesulide.
RDL Kalıcı Kaydıİncele - ArticleAçık Erişim2016Should orthopedic surgeons consider the effects of gabapentin administration on bone healing while treating a long bone fracture: Experimental study in a rat model
Sofu, Hakan; Kockara, Nizamettin; Aydin, Bahattin Kerem; Suleyman, Bahadir; Tayfur, Mahir; Malkoc, Ismail
Objective: The main purpose of the present study was to assess the radiographic, histological, and mechanical effects of gabapentin on fracture healing in a rat model of femur fracture. Materials and methods: A standard transverse fracture of the mid-diaphysis was created. A total of 60 female Wistar-Albino rats with the mean age of 13.5 ± 1.2 weeks were used for this experimental trial. The rats were randomized into four groups with 15 animals included in each group. Group A and B were the control groups whereas C and D were the treatment groups. Drugs were delivered by oral gavage twice a day with the daily dosage calculated according to body surface area conversion to the human equivalent dosing regimen of 1200 mg/day. Radiographic, histological, and biomechanical evaluation was performed. Results: We could not detect any statistically significant difference between the control and gabapentin treatment groups according to the comparative assessment of radiographic scores on the 15th and 30th days. Although no significant differences were found between the groups on the 15th day, histological scores were better in the control group on the 30th day. According to the results of biomechanical testing, the fractured femurs resected from the control group exhibited significantly more strength on the 30th day. Conclusions: According to the data we acquired during the present study, administration of gabapentin negatively affects the fracture healing process especially in the aspects of histological progression as well as the biomechanical strength of the callus in a rat model.
RDL Kalıcı Kaydıİncele - ArticleAçık Erişim2016Gene expression and histopathological evaluation of thiamine pyrophosphate on optic neuropathy induced with ethambutol in rats
Cinici, Emine; Cetin, Nihal; Suleyman, Bahadir; Altuner, Durdu; Yarali, Oguzhan; Balta, Hilal; Callk, Ilknur; Tumkaya, Levent; Suleyman, Halis
AIM: To compare the effects of thiamine pyrophosphate (TPP) and thiamine (TM) in oxidative optic neuropathy in rats induced by ethambutol. METHODS: The animals were divided into four groups: a control group (CG), an ethambutol control (ETC) group, TM plus ethambutol group (TMG), and TPP plus ethambutol group (TPPG). One hour after intraperitoneal administration of TM 20 mg/kg to the TMG group and TPP 20 mg/kg to TPPG group, 30 mg/kg ethambutol was given via gavage to all the groups but the CG. This procedure was repeated once daily for 90d. After that period, all rats were exposed to high levels of anaesthesia in order to investigate the gene expression of malondialdehyde and glutathione in removed optic nerve tissue and histopathologically to examine these tissues. RESULTS: Malondialdehyde gene expression significantly increased, whereas glutathione gene expression significantly decreased in the ETC group compared to the CG. TM could not prevent the increase of malondialdehyde gene expression and the decrease of glutathione, while TPP significantly could suppress. Histopathologically, significant vacuolization in the optic nerve, single-cell necrosis in the glial cells, and a decrease in oligodendrocytes were observed in the ETC group. Vacuolization in the optic nerve, a decrease in oligodendrocytes and single-cell necrosis were found in the TMG group, while no pathological finding was observed in the TPPG group except for mild vacuolization. CONCLUSION: TPP protects the optic nerve against the ethambutol-induced toxicity but TM does not. TPP can be beneficial in prophilaxis of optic neuropathy in ethambutol therapy.
RDL Kalıcı Kaydıİncele - ArticleAçık Erişim2016Effect of thiamine pyrophosphate on retinopathy induced by hyperglycemia in rats: A biochemical and pathological evaluation
Cinici, Emine; Ahiskali, Ibrahim; Cetin, Nihal; Suleyman, Bahadir; Kukula, Osman; Altuner, Durdu; Coban, Abdulkadir; Balta, Hilal; Kuzucu, Mehmet; Suleyman, Halis
Purpose: Information is lacking on the protective effects of thiamine pyrophosphate (TPP) against hyperglycemia-induced retinopathy in rats. This study investigated the biochemical and histopathological aspects of the effect of TPP on hyperglycemia-induced retinopathy induced by alloxan in rats. Materials and Methods: The rats were separated into a diabetic TPP-administered group (DTPG), a diabetes control group (DCG) and a healthy group (HG). While the DTPG was given TPP, the DCG and HG were administered distilled water as a solvent at the same concentrations. This procedure was repeated daily for 3 months. At the end of this period, all of the rats were euthanized under thiopental sodium anesthesia, and biochemical and histopathological analyses of the ocular retinal tissues were performed. The results of the DTPG were compared with those of the DCG and HG. Results: TPP prevented hyperglycemia by increasing the amount of malondialdehyde and decreasing endogen antioxidants, including total glutathione, glutathione reductase, glutathione S-transferase and superoxide dismutase. In addition, the amounts of the DNA oxidation product 8-hydroxyguanine were significantly lower in the retinas of the DTPG compared to the DCG. In the retinas of the DCG, there was a marked increase in vascular structures and congestion, in addition to edema. In contrast, little vascularization and edema were observed in the DTPG, and there was no congestion. The results suggest that TPP significantly reduced the degree of hyperglycemia-induced retinopathy. Conclusions: The results of this study indicate that TPP may be useful for prophylaxis against diabetic retinopathy.
RDL Kalıcı Kaydıİncele - ArticleYalnız künye2016The effect of thiamine pyrophosphate on ethambutol-induced ocular toxicity
Cinici, Emine; Cetin, Nihal; Ahiskali, Ibrahim; Suleyman, Bahadir; Altuner, Durdu; Alp, Hamit Hakan; Sener, Ebru; Calik, Ilknur; Suleyman, Halis
Context: Ethambutol-induced retinal oxidative damage in patients with tuberculosis is still not being adequately treated. The protective effect of thiamine pyrophosphate against oxidative damage in some tissues has been reported, but no information on the protective effects of thiamine pyrophosphate against ethambutol-induced oxidative retinal damage has been found in the medical literature. Objective: The objective is to investigate whether thiamine pyrophosphate has a protective effect against oxidative retinal damage in rats induced by ethambutol. Materials and methods: Experimental animals divided into four groups (n = 10): the healthy group (HG), the ethambutol control group (EMB), thiamine + ethambutol group (Thi–EMB) and thiamine pyrophosphate + ethambutol group (TPP–EMB). The rats in the TPP–EMB and Thi–EMB groups were administered thiamine pyrophosphate and thiamine, respectively, at doses of 20 mg/kg intraperitoneally. Distilled water was administered intraperitoneally to the HG and the EMB groups as a solvent in the same volumes. One hour after drug injection, 30 mg/kg ethambutol was administered via an oral gavage to the TPP–EMB, Thi–EMB and EMB groups. This procedure was repeated once a day for 90 days. At the end of this period, all rats were euthanized under high-dose thiopental sodium anesthesia, and biochemical and histopathological investigations of the retinal tissue were performed. Results: Malondialdehyde (MDA) and DNA damage product 8-hydroxyguanine levels were significantly lower in the retinal tissue of TPP–EMB and HG groups compared to those of the Thi–EMB and EMB groups, and total glutathione (tGSH) was also found to be higher. In addition, severe retinal tissue vascularization, edema and loss of ganglion cells were observed in the Thi–EMB and EMB groups, whereas histopathological findings for the TPP–EMB group were observed to be close to normal. Discussion and conclusion: These findings suggest that thiamine pyrophosphate protects retinal tissues from ethambutol-induced oxidative damage, and thiamine does not. This positive effect of thiamine pyrophosphate may be useful in the prevention of ocular toxicity that occurs during ethambutol use.
RDL Kalıcı Kaydıİncele - ArticleYayıncıda açık erişim2015Effect of disulfiram on ketamine-induced cardiotoxicity in rats
Cetin, Nihal; Suleyman, Bahadir; Altuner, Durdu; Kuyrukluyildiz, Ufuk; Ozcicek, Fatih; Coskun, Resit; Kurt, Nazahat; Suleyman, Halis
It is known that ketamine increases the production of catecholamines, causing oxidative damage to the heart. Suppression of the production of catecholamines by disulfiram, a drug with antioxidant properties, indicates that disulfiram may decrease ketamine-induced cardiotoxicity. The objective of the present study was to investigate the effect of disulfiram on ketamine-induced cardiotoxicity in rats. Disulfiram was administered by oral gavage in doses of 25 mg/kg to rats in the DK-25 group and 50 mg/kg to rats in the DK-50 group. Distilled water was applied in the ketamine control (KC) and healthy (HG) rat groups. At one hour after drug administration and subsequently at ten-minute intervals, a 60 mg/kg dose of ketamine was intraperitoneally injected in the rats in all groups other than HG, and anesthesia was maintained for three hours. Disulfiram prevented both increase in the levels of parameters indicating oxidative and myocardial damage and decrease of antioxidant levels in the heart tissue with ketamine in a dose-dependent manner. Disulfiram better prevented occurrence of cardiotoxicity with ketamine in the 50 mg/kg dose than in the 25 mg/kg dose. It is concluded that disulfiram may usefully be applied in clinical practice in the prevention of cardiotoxicity as observed during anesthesia with ketamine.
RDL Kalıcı Kaydıİncele - ArticleYalnız künye2015The comparison of resveratrol and N-acetylcysteine on the oxidative kidney damage caused by high dose paracetamol
Yapanoglu, Turgut; Adanur, Senol; Ziypak, Tevfik; Arslan, Aynur; Kunak, Celalettin S.; Alp, Hamit H.; Suleyman, Bahadir
In this study, the effects of resveratrol were investigated on paracetamol-induced oxidative kidney damage in rats and compared with N-acetylcysteine (NAC). Rats were divided into healthy (HG), paracetamol control (PAC), resveratrol + paracetamol (RPA), NAC + paracetamol (NPA) groups. RPA group was administered 30 mg/kg resveratrol, NPA group was administered NAC in 300 mg/kg doses. Distilled water was administered to HG and PAC group. One hour after administration of the drugs and distilled water, all groups (except for HG) were given paracetamol 1000 mg/kg dose. 24 h after paracetamol administration, animals were killed by anesthesia and their kidneys were removed. Biochemical investigations were carried out on the kidneys. Resveratrol and NAC almost equally suppressed the increase of malondialdehyde (MDA) amount in the renal tissue of paracetamol-administered group. But resveratrol reduced the increase of 8-hydroxyguanine (8-OHGua), creatinine and blood urea nitrogen (BUN) more significantly than NAC. Resveratrol prevented loss of total glutathione (tGSH) in rats taking paracetamol better than NAC. As a result, resveratrol was determined to prevent oxidative renal damage and functional disorder related to paracetamol better than NAC.
RDL Kalıcı Kaydıİncele - ArticleYalnız künye2015The molecular mechanism involved in the protective effect of etodolac against ovarian injury induced with ischemia/reperfusion in rats
Al, Ragip A.; Yapca, Omer E.; Dogan, Hasan; Mammadov, Renad; Altuner, Durdu; Suleyman, Bahadir; Cetin, Nihal
This study investigated the protective effect at the molecular level of etodolac against ovarian injury induced in rats with ischemia/reperfusion (I/R). Rats were divided into four groups. The 25 mg/kg etodolac + ovarian ischemia/reperfusion (EIR 25) and 50 mg/kg etodolac+ovarian ischemia/reperfusion (EIR 50) groups were given etodolac by the oral route 1 h before administration of anesthesia. Two h of ischemia and 2 h of reperfusion were applied to ovarian tissue in all groups (except for (SG) sham operation group) 1 h after etodolac administration. The experimental results showed that etodolac at a dose of 50 mg/kg suppressed MPO (myeloperoxidase), TNF-α, IL-1β gene expression in ovarian tissue with I/R better than at a dose of 25 mg/kg. In addition, etodolac at these doses prevented a decrease in SOD gene expression in ovarian tissue subjected to I/R to a significant extent (p < 0.0001). In conclusion, etodolac can be used in the treatment of I/R-related ovarian injury.
RDL Kalıcı Kaydıİncele - ArticleYalnız künye2013The protective effect of melatonin and agomelatin against cisplatin-induced nephrotoxicity and oxidative stress in the rat kidney
Yilmaz, Ismayil; Demiryilmaz, Ismail; Turan, Mehmet I.; Suleyman, Bahadir; Turan, Isil S.; Altuner, Durdu; Alp, Hamit H.; Suleyman, Halis
Cisplatin is used to treat various types of cancers. Its use is limited, however, due to nephrotoxicity, which may result from free radical damage. Evidence exists that melatonin reduces oxidative stress-induced damage. This study investigated the protective effect of agomelatin, a melatonin receptor agonist, against cisplatin-induced nephrotoxicity and oxidative stress in the rat kidney. Groups of rats were given cisplatin with or without agomelatin or melatonin, or distilled water for 14 days. MDA, tGSH, MPO and 8-OH Gua levels were measured to determine oxidative and DNA damage in renal tissue. Levels of MDA, MPO and 8-OH Gua were lower in the Mel+Cis and Ago+Cis groups than in the Cis group (P < 0.001, P < 0.001, and P < 0.05, respectively). The tGSH level in the Mel+Cis group was higher than that in the Cis group (P < 0.001). Agomelatin and melatonin thus reduced cisplatin-induced oxidative damage and DNA damage in the rat kidney. This suggests that melatonin may be effective in preventing cisplatin nephrotoxicity.
RDL Kalıcı Kaydıİncele