Browsing by Author "Oto, Gokhan"

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Anthelmintic Activity of Urtica Dioica L. in Mice Naturally Infected With Aspiculuris Tetraptera
(Medwell online, 2008) Turel, Idris; Oto, Gokhan; Ayaz, Erol; Yilmaz, Orhan; Mercan, Ufuk
The aim of present study was to investigate the anthelmintic activity of Urtica dioica L. (nettle) in Swiss albino mice naturally infected with Aspiculuris tetraptera. Methanolic extracts obtained from leaves and seeds of U dioica were evaluated for their in vivo anthelmintic activity. The 250 mu L (175 mg mL(-1)) extracts were administered orally on daily basis. Results showed that methanolic extract of U. dioica seeds possessed only a slight anthelmintic activity. In contrast, methanolic extract of leaves exhibited potent anthelmintic activity.
Antioxidant Properties of Ferulago Angulata and Its Hepatoprotective Effect Against N-Nitrosodimethylamine Oxidative Stress in Rats
(Taylor & Francis Ltd, 2017) Kiziltas, Hatice; Ekin, Suat; Bayramoglu, Mahire; Akbas, Esvet; Oto, Gokhan; Yildirim, Serkan; Ozgokce, Fevzi
Context: Ferulago angulata (Schlecht.) Boiss. (Apiaceae) (FASB) is used to treat liver diseases and has been used both as food and therapeutics by many cultures for thousands of years because of the natural antioxidant compounds. Objective: This study determines antioxidant properties of FASB flowers, the levels of minerals and vitamins, and also, evaluates the hepatoprotective effect of flowers against N-nitrosodimethylamine (NDMA) induced on liver tissue by assessing antioxidant enzymes and histopathological parameters in Wistar albino rats. Materials and methods: In the study, the rats were divided into six groups of ten. Control, untreated animals were given 0.9% NaCl. Rats were intraperitoneally given NDMA (10 mg/kg) for the first 7 days. FASB methanol extract (150 and 300 mg/kg) was administered orally for 21 days. Results: a-Tocopherol, retinol, ascorbic acid, total antioxidant activity, phenolic and flavonoid contents of FASB were 0.70 +/- 0.13, 0.29 +/- 0.03 mu g/g, 139.32 +/- 7.06 mu g/100 g, 171.61 +/- 6.05 mM ascorbic acid/g, 90.47 +/- 4.11 mg GA/g and 37.39 +/- 2.85 mg QE/g. DPPH and hydroxyl radical scavenging activity was obtained IC 50 67.34 +/- 4.14 and 64.87 +/- 4.68 mu g/mL, respectively. Discussion and conclusion: The results of the study indicated that FASB flowers contain high levels of vitamins, minerals, total antioxidant activity, phenolics and flavonoids. Due to the positive effect on significant changes in antioxidant enzymes of liver tissue and histopathological examination, it is thought that the plant could be used as a hepatoprotective.
Antioxidant Properties of Rosa Pisiformis and Its Protective Effect Against Isoproterenol-Induced Oxidative Stress in Rats
(Walter de Gruyter Gmbh, 2016) Bayramoglu, Mahire; Ekin, Suat; Kiziltas, Hatice; Oto, Gokhan; Susen, Ebru Altindal; Ozgokce, Fevzi
Objective: In this study, Rosa pisiformis was evaluated for its antioxidant activity, vitamin (A, E, C), trace element (Fe, Cu, Zn, Mn, Cr, Se) and mineral (Ca, K, Mg, Na) levels, in addition to its cardioprotective effects on cardiac tissue antioxidant enzymes (GSH-Px, SOD, CAT) during isoproterenol (ISO)-induced oxidative stress. Methods: In the study, vitamin and mineral analysis was carried out using HPLC and ICP-MS method, R. P. antioxidant and antiradical properties were determined using spectrophotometer. Forty wistar albino rats were divided into four groups: control (0.9% NaCl), ISO (100 mg/kg), ISO (100 mg/kg) + R. P. (300 mg/kg) and R. P. (300 mg/kg). ISO was injected subcutaneously into rats twice at an interval of 24 h for two consecutive days (on 28(th) and 29(th) day). R. P. fruit administered daily. The experimental period was continued for 30 days. Results: The results of the study indicated that R. P. fruit and leaves contain high levels of minerals and vitamins and possess antioxidant and antiradical activity and its fruits have positive effects on cardiac tissues. The results are supported with significant changes in antioxidant enzyme levels and histopathological examination. Conclusion: This study demonstrates that R. P. fruits in particular can be used to treat and prevent cardiac diseases.
April Cetina, Dede, Oto, Yuksek, Bulduk, the Effect of Resveratrol on Serum Protein Fractions in Rats Exposed To Experimental Chronic Fluorosis
(int Soc Fluoride Research, 2022) Cetin, Sedat; Dede, Semiha; Oto, Gokhan; Yuksek, Veysel; Bulduk, Mehmet; Ozdemir, Hulya
Chronic fluorosis results from long-term fluoride intake at more than the normal doses. The aim of this study was to demonstrate the effects of resveratrol (Res) on the serum protein fractions in rats, in which experimental chronic fluorosis was induced. After an adaptation period, the rats were randomly divided into 4 groups of 10; namely the (i) control, (ii) sodium fluoride (NaF), (iii) Res, and (iv) NaF+Res groups. Serum protein fractions in the rat blood samples were determined by cellulose-acetate electrophoresis. While the NaF group had statistically reduced concentrations of total protein, albumin, and alpha-1 and alpha-2 globulin compared to the control group (p < 0.05), these values were significantly increased (p < 0.05) in the NaF+Res group, compared to the NaF group, and close to those of the control group. The 0- and gamma-globulin concentrations were the lowest in the NaF group statistically (p < 0.05). Despite a significant increase (p < 0.05) in these values in the NaF+Res group, compared to the NaF group, they were still lower compared to the control group. The examination of the percentage of serum protein fractions revealed a reduced albumin in the NaF group compared to the control group but the finding was not statistically significant (p > 0.05). The albumin of the NaF+Res group was statistically higher than that of the control group (p < 0.05). No statistical differences were observed in alpha-1 and alpha-2 globulin across the groups. The 0 -globulin of the NaF group was the highest but not statistically higher than that of the control group. The gamma-globulin percentages in all the groups were found to be lower than the levels in the control group. The albumin/globulin (A/G) ratio decreased in the NaF group but was not significantly different than that of the control group. In conclusion, the alterations in the serum protein fractions due to NaF-induced toxicity, especially the alterations in their concentrations, approached values closer to those of the control group with the administration of resveratrol. We concluded that these results are of potential importance in indicating a favorable role for resveratrol use in preventing and treating fluoride toxicity.
Aqueous Extract of Chives (Allium Schoenoprasum L.) Plant Attenuates Erythrocyte Deformability in Sickle Cell Anemia Patients
(Wiley, 2017) Arihan, Okan; Nader, Elie; Oto, Gokhan; Fort, Romain; Cannas, Giovanna; Connes, Philippe
Aqueous Extract of Chives (Allium Schoenoprasum L.) Plant Impairs Erythrocyte Deformability in Sickle Cell Patients
(Ios Press, 2021) Arihan, Okan; Nader, Elie; Oto, Gokhan; Kocak, Yilmaz; Fort, Romain; Connes, Philippe
Sickle cell anemia (SCA) is a genetic disorder characterized by chronic hemolysis and the presence of erythrocytes with low deformability, which may trigger vaso-occlusive crises. We tested the in-vitro effects of aqueous extract of chives (Allium schoenoprasum L.) on erythrocyte deformability of SCA patients. Blood samples from 6 apparently healthy volunteers and 5 SCA patients were collected into heparin coated tubes. Both apparently healthy and SCA patient blood samples were incubated with 80 mu g/mL chives plant aqueous extract at 37 degrees C for 60 min and erythrocyte deformability was measured by ektacytometry (3 Pa and 30 Pa; 37 degrees C). Results of incubation of apparently healthy blood samples with plant extract showed that incubation did not alter erythrocyte deformability significantly. However, for SCA blood samples, erythrocyte deformability decreased significantly with plant extract exposure at 3 Pa (p < 0.043) and 30 Pa (p < 0.043). In conclusion, although ex-vivo incubation with plant extract does not fully model gastrointestinal processing of onions, the decrease in SCA erythrocyte deformability following incubation with aqueous chives should stimulate further studies to test the in-vivo effects of this diet in sickle cell mice.
Assessment of Therapeutic Potential of Silver Nanoparticles Synthesized by Ferula Pseudalliacea Rech. F. Plant
(Elsevier, 2022) Kocak, Yilmaz; Oto, Gokhan; Meydan, Ismet; Seckin, Hamdullah; Gur, Tugba; Aygun, Aysenur; Sen, Fatih
Plant-mediated synthesis of silver nanoparticles (Ag NPs) has increased its use in various biomedical applications due to its cost-effectiveness, renewable and environmentally friendly properties. Therefore, the focus of the study was to synthesize Ag NPs and to evaluate their antibacterial, and antioxidant activities by using the aqueous root extract of Ferula pseudodalliacea plant as a reducing agent. In addition, the synthesis of nanoparticles was confirmed by performing Ag NPs/Fp characterization processes. According to the findings of our research, color change due to surface plasmon resonance was confirmed by UV-vis spectrometry. The crystal properties of Ag NPs/Fp were determined according to the XRD model. Phytochemicals responsible for coating and reduction of Ag NPs/Fp were observed by FT-IR analysis. It has been shown that the therapeutic effect of Ag NPs/Fp exhibits better antimicrobial and antioxidant activity than aqueous extract. In addition, it was determined that Ag NPs/Fp structures showed the best antifungal effect against Candida albicans ATTC 90028 pathogen and gave a better zone than Rifampicin antibiotic. Therefore, studies at the molecular level and more comprehensively are required to determine the bioactive components and pharmacological effects of Ferula pseudodalliacea plant to confirm our antibacterial, antioxidant, and antifungal activity results.
Comparison of Effects of High and Low Dose Paracetamol Treatment and Toxicity on Brain and Liver in Rats
(Kare Publ, 2020) Oksuz, Ersoy; Yasar, Semih; Erten, Remzi; Arihan, Okan; Oto, Gokhan
OBJECTIVE: Paracetamol is thought that it acts by inhibiting the central cyclooxygenase (COX) enzyme; its mechanism of action is still not fully explained. Although its most important side effect is hepatoxicity, it is thought to cause toxicity on the brain in recent years. The present study aims to investigate the treatment and toxic effects of low and high doses of paracetamol on the liver and brain. METHODS: Wistar-albino rats were used in this study. At doses of 20-500 mg/kg, paracetamol was administered intraperitoneally once a day for one and three days. The brain and liver were used for immunohistochemical evaluation using COX-3, prostaglandin E-2 (PGE(2)) and caspase 3 antibodies and for total antioxidant (TAS), total oxidant ( TOS) and oxidative stress index (OSI) measurements. Results were evaluated using the Kruskal Wallis test (SPSS ver.24). RESULTS: The liver COX-3 levels were significantly lower in both groups with higher doses (p<0.05). In the brain, there was no statistically significant difference in COX-3 levels between the groups. There was no statistically significant difference in PGE(2) levels in the liver and brain between the groups (p>0.05). The caspase 3 level in the liver was statistically significantly higher in the low dose group compared to the other groups (p<0.05). In both liver and brain, OSI values were significantly higher in the 3-day high-dose group compared to others (p<0.05). There was no statistically significant difference between the groups in ALT and AST values (p>0.05). CONCLUSION: The results of our study show that paracetamol inhibits the COX-3 enzyme in the liver but has no effect in the brain, and COX-3 does not have an effect on PGE(2). Paracetamol causes apoptosis in the liver only in low doses; higher doses may cause toxicity by increasing oxidative stress, especially in the brain.
Cytoprotective Effects of Boric Acid and Coenzyme Q10 Therapy on Induced Pulmonary Fibrosis in Response To Intratracheal Administration of Bleomycin in Rats
(Parlar Scientific Publications (p S P), 2013) Oto, Gokhan; Ekin, Suat; Celikezen, Fatih Caglar; Yener, Zabit; Tanritanir, Pinar; Ozdeinir, Hulya; Bayramoglu, Mahire
This study was designed to examine cytoprotective effects of boric acid and CoQ(10) on a model of bleomycin-induced lung fibrosis. A total of 32 female Wistar albino rats (200-250 g, n=8) were randomly divided into four groups (control, bleomycin, bleomycin + boric acid, and bleomycin + boric acid + CoQ(10)). Rats in the control group were given equal volumes of saline intratracheally. Lung fibrosis was induced by intratracheal administration of bleomycin hydrochloride (7.5 mg/kg in 0.9% NaCl) to rats under anaesthesia. In the treatment groups, the rats were treated with boric acid (10 mg/kg per day; perorally) and CoQ(10) (4 mg/kg per day; intraperitoneally) for 30 days. All animals were sacrificed at the end of the experiment. The lung, liver, kidney, and spleen tissues were excised, taken for histopathological evaluation, and stored for the measurement of SOD and GSH-Px activities with trace element and minerals. As a result, boric acid and boric acid + CoQ(10) had preventive roles on bleomycin-induced lung fibrosis in rats.
Determination of 7,12-Dimethylbenz[a]anthracene in Orally Treated Rats by High-Performance Liquid Chromatography and Transfer Stripping Voltammetry
(Bentham Science Publ Ltd, 2012) Yardim, Yavuz; Levent, Abdulkadir; Ekin, Suat; Keskin, Ertugrul; Oto, Gokhan; Senturk, Zuhre
A number of polycyclic aromatic hydrocarbons (PAHs) have been shown to be toxicants, and induce carcinogenic and immunotoxic effects. As a model PAH agent, 7,12-dimethylbenz[a]anthracene (DMBA) was the strongest one tested in terms of its biological activities and biotransformation. A new and simple high-performance liquid chromatographic (HPLC) method with diode-array detection at 290 nm was developed and validated for monitoring of DMBA in different matrices (serum, liver and kidney) of rats orally treated with DMBA. Furthermore, the applicability of adsorptive transfer stripping voltammetry (AdTSV) on the pencil-lead graphite electrode to these samples was illustrated using our previously reported data for bulk aqueous solutions of DMBA. HPLC and AdTSV methods, which were compatible with each other, allowed DMBA to be detected down to the levels of 3.82x10(-9) M (0.98 ppb) and 6.73x10(-9) M (1.73 ppb), respectively. Olive oil solutions of DMBA in dose 50 mg/kg were orally administered. 60 days after a single dose of DMBA, its concentrations in these biological samples from rats were measured by means of both methods. Because of rapid biotransformation, DMBA could not be detected in serum. Only low levels of the compounds were deposited unchanged in kidney whereas its levels were considerably higher in liver. These methods were also applied to the assay whether there is an influence of the intake of aqueous extracts of Hypericum Perforatum L. plant on the parent DMBA levels accumulated in rat tissues.
Effect of Acute and Chronic Fluoride Administration on Bone Histopathology, Bone Fluoride Accumulation, and Locomotor Activity in an Animal Model of Paleopathological Fluorosis
(int Soc Fluoride Research, 2020) Turkekul, Ramazan; Arihan, Seda Karaoz; Yildirim, Serkan; Arihan, Okan; Oto, Gokhan; Ekin, Suat; Yildiz, Damla
Fluorosis may be identified in skeletal materials from ancient civilizations by macroscopic signs in teeth and bone and hard tissue fluoride levels. In the present study, human teeth, femoral, and rib specimens from the Van Fortress excavation, in Turkey, were examined for the presence of fluorosis. In addition, an animal study in rats was conducted as a model of human fluorosis, by examining the effects of fluoride administration, in various doses and for different durations, on weight loss, locomotor activity, fluoride accumulation, and deformation in bone and teeth. Fifty-six adult male Wistar albino rats, weighing 150-200 g, were divided into 7 different groups of 8 rats. Four acute groups were treated with 0 (control), 5, 15, and 50 mg/L of fluoride in drinking water for 7 days and three chronic groups were treated with 5, 15, and 50 mg/L of fluoride for 90 days. The results of the analysis of the human samples from the Van Fortress excavation showed that none of the dental, femoral, or rib samples had a fluoride content that was significantly greater than that of the surrounding soil. The results of the rat study showed that no significant differences between the groups were found in body weight on days 1, 30, 60, and 90. The rotarod locomotor test showed a significant (p<0.05) dose- and time-dependent reduction in locomotor activity as a result of the fluoride administration in the 50 mg/L chronic fluoride group compared to the control, 5 mg/L acute fluoride, 15 mg/L acute fluoride, and 5 mg/L chronic fluoride groups. Significant fluoride accumulation was found in the femoral neck (cortical tissue), the femoral head (trabecular tissue), and in rib bone. Light microscopy showed a severe thinning of the epiphyseal growth plate and bone trabeculae in the femoral bone tissue. We concluded that femoral bone (cortical and trabecular parts) and ribs are good sites for assessing the effects of fluoride exposure in animal models of human fluorosis.
Effect of Alloxan on Some of Biochemistry Parameters in Serum Rats
(Asian Journal of Chemistry, 2007) Yasar, Sema; Oto, Gokhan; Demir, Halit; Cebi-Ilhan, Aysegul
This study was carried out to investigate whether alloxan-diabetic rats' could affect biochemical parameters in serum. Twelve Sprague-Dawley albino rats were divided into two experimental groups, i.e., control and alloxan-diabetic rats. A single dose (100 mg/kg) of alloxan was injected intraperitonealy to the treatment rats. Control rats were given only the same amount of physiological saline. Various biochemical constituents of rat were determined after treatment with the alloxan, which caused significant increases in glucose and alanine aminotransferase (ALT) for 1, 3 and 6 h after the treatment, while the level of cholesterol was decreased. Aspartate aminotransferase (AST) level did not change in 1, 3 and 6 h. It is concluded from the experimental of this study that alloxan may cause diabetic in rats.
The Effect of Boric Acid and Borax on Blood Pressure in the Benzo(A)pyrene (B and 3-Methylcholanthrene (3-Mc) Applied Rats
(Wiley-blackwell, 2015) Bulduk, Bahattin; Oto, Gokhan; Ozdemir, Hulya; Gunbatar, Nizamettin; Uyar, Hasan; Bulduk, Mehmet; Elaslan, Sadi
Effect of Boric Acid and Borax on Heart Rate in Rats Treated With Benzo(A)pyrene and 3-Methylcholanthrene
(Parlar Scientific Publications (p S P), 2021) Bulduk, Bahattin; Oto, Gokhan; Ozdemir, Hulya; Gunbatar, Nizamettin; Bulduk, Mehmet; Kocak, Yilmaz; Keskin, Siddik
In this study, the effects of boric acid (BA) and borax (BX) on the heart rate of rats treated with benzo(a)pyrene (B(a)P) and 3-methylcholanthrene (3-MC) were investigated. This research was conducted with the permission of Van Ytiztincti Yil University Animal Experiments Local Ethics Committee. Wistar albino rats weighing 250 +/- 50 g were used in the study and divided into nine groups, six in each group. Group 1 was assigned as the control group. B(a)P (100 mg/kg) was administered intraperitoneally to Group 2 and 3-MC (100 mg/kg) to Group 3. BA only was administered to Group 4 at 300 mg/L in drinking water and to Group 5, BX only at 300 mg/L. Group 6 received B(a)P (100 mg/kg) + BA (300 mg/L) and Group 7 3-MC (100 mg/kg) + BA (300 mg/L). B(a)P (100 mg/kg) + BX (300 mg/L) was administered to Group 8 and 3 -MC (100 mg/kg) BX (300 mg/L) to Group 9. At the end of the 150th day, the rats were anaesthetised and their ECGs recorded. The heart rate (beats/min) was found to be statistically significant in B(a)P, 3 -MC and groups compared to the control group. It was found that the heart rate increased by 3 -MC and B(a)P in the groups was regulated by BA and BX.
Effect of Chronic Exposure To Sodium Fluoride and 7,12-Dimethylbenz[a]anthracene on Some Blood Parameters and Hepatic, Renal, and Cardiac Histopathology in Rats
(int Soc Fluoride Research, 2018) Yildirim, Serkan; Ekin, Suat; Huyut, Zubeyir; Oto, Gokhan; Comba, Arzu; Uyar, Hasan; Cinar, D. Ali
This study aimed to investigate the effects of both sodium fluoride (NaF) and 7,12-dimethylbenz[a]anthracene (DMBA), both separately and in combination, on some blood parameters and hepatic, renal, and cardiac histopathology in rats. Forty male Wistar albino rats, weighing 250-300 g, were randomly divided into one control and three experimental groups (i) a NaF group who received 15 ppm of NaF in their drinking water for 90 days, (ii) a DMBA group who received 10 mg DMBA/kg body weight/po/ weekly for 90 days, and (iii) a NaF+DMBA group who received 15 ppm NaF in their drinking water plus 10 mg DMBA/kg bw/po/weekly for 90 days. The animals in the groups were sacrificed at the end of the 90 days. The AST, ALT, LDH, CK, creatinine, troponin I, and MDA levels increased in the NaF, DMBA, and NaF+DMBA groups compared to the control group, while the WBC, K, Na, Cl, urea, SOD, GSH-Px, CAT, and GSH values showed a statistically significant decrease (p<0.05). In addition, the CK-MB significantly increased in the DMBA and NaF+DMBA groups compared to the control group (p<0.05). The histological structure of the liver, kidney, and heart tissues in the control group was normal. In the NaF and DMBA groups, degenerative and necrotic changes were detected. In the NaF+DMBA group: (i) the liver exhibited hydropic degeneration and coagulation necrosis in hepatocytes, severe dilation in the sinusoids, congestion in the central and portal regions, and mononuclear cell infiltration in the portal region; (ii) the kidneys displayed congestion in the glomerulus and interstitial vessels, interstitial nephritis, diffuse hydropic degeneration, and coagulation necrosis in the tubule epithelium; (iii) the heart showed myocardial hyperemia, severe mononuclear cell infiltration in interstitial tissue, hyaline degeneration, and Zenker's necrosis in myocardium As a result of these blood and oxidative stress parameters and histopathological findings, it was determined that NaF, DMBA, and NaF+DMBA induce toxicity in the liver, kidney, and heart tissues and thus play an important role in the physiopathology of toxicity.
The Effect of Coq10 and Vitamin E on Serum Total Sialic Acid, Lipid-Bound Sialic Acid, Some Trace Elements and Minerals in Rats Induced With Doxorubicin
(Academic Journals, 2011) Oto, Gokhan; Ekin, Suat; Yasar, Semih; Ozdemir, Hulya; Yur, Fatmagul
This study was designed to evaluate the effect of CoQ(10) and vitamin E on serum total sialic acid (TSA), lipid bound sialic acid (LSA) and some elements in rat administered doxorubicin (DXR). Cu levels were increased in the group treated with DXR + vitamin E in comparison with DXR (p<0.05) and CoQ(10) groups (p = 0.001). Furthermore, copper levels were increased in the group treated with DXR + CoQ10 in comparison with CoQ(10) group (p < 0.05). Zn levels were decreased in the group treated with DXR + vitamin E in comparison with CoQ(10) group (p < 0.05). Mg levels were decreased in subjects treated with DXR + vitamin E in comparison with the control group values (p < 0.05). Particularly, the observed increase in Cu levels in rats from DXR + vitamin E group might be due to the decrease of vitamin E. However, the oxidative damage could be as a result of DXR occurence and may be helpful to clinicians in chemotherapy using anthracycline.
Effect of Dietary Boron on Learning and Behavior in Rats Administered With Boric Acid
(C M B Assoc, 2019) Ozdemir, Hulya; Yaren, Biljana; Oto, Gokhan
This study was designed to investigate the effect of dietary boron on spatial learning, anxiety, some vitamins and oxidative parameters in rats. Thirty-two Wistar albino male rats were used in the study. The rats were equally divided into four groups with 8 rats each: I control group: standard pellet diet only, II. group: 250 ppm boric acid, III. group: 500 ppm boric acid and IV. group: 1000 ppm boric acid added into standard pellet diet. Over a five-week period, elevated plus-maze test was used for anxiety assessment and Morris water maze test was used for evaluating spatial learning. Additionally, blood samples were obtained at the end of the experiment and were used to determine the serum levels of some vitamins and oxidative parameters. Dietary boron significantly increased weight gain (p<0.001) and food consumption in the 250 ppm and 500 ppm groups (p<0.05). Although boron supplementation had no significant effect on learning and anxiety-related behavior, it had beneficiary effects on memory retention in the 1000 ppm group (p<0.05). Biochemical analyses showed a significant decrease in the MDA levels (p<0.05) and an increase in vitamin D 3 levels (p<0.01) in the 500 ppm group, a significant increase in GSH-Px activity in the 250 ppm and 500 ppm groups (p<0.05), and a decrease in vitamin F levels in all the experimental groups (p<0.05). In conclusion, our study demonstrated that dietary boron can be beneficial for health when administered at appropriate doses.
The Effect of Drospirenone/Estradiol Treatment on Catalase and Carbonic Anhydrase Enzyme Activities, and Some Mineral Concentrations in Ovariectomized Rats
(Parlar Scientific Publications (p S P), 2011) Alkis, Ismet; Kavak, Servet; Meral, Ismail; Oto, Gokhan; Demir, Halit
This study was designed to investigate the effect of drospirenone/estradiol (Angeliq (R)) on erythrocyte CAT and CA enzyme activities, and serum Fe, Mg, Co, Cu, Zn, Pb, Mn and Cd concentrations in ovariectomized- and drospirenone/estradiol-treated rats. Forty Female Wistar-albino rats were divided randomly into four groups, each consisting of ten rats. The animals in the first group were not treated, and served as control. The animals in the second group were operated but not ovariectomized and served as sham group. The animals in the third group were operated, ovariectomized but not treated with drospirenone/estradiol and served as ovariectomized group. The animals in the fourth group were operated, ovariectomized and treated with 0.01 mg/kg 17 beta-estradiol and 0.02 mg/kg drospirenone daily, p.o. for four weeks. Blood samples were collected at the end of the application period for the determination of the erythrocyte catalase (CAT) and carbonic anhydrase (CA) enzyme activities as well as serum Fe, Mg, Co, Cu, Zn, Pb, Mn and Cd concentrations. It was found that although erythrocyte CAT enzyme activity decreased in sham group, CA enzyme activity increased in angeliq group. Serum Pb levels of angeliq group and serum Mg levels of sham, ovariectomized and angeliq groups decreased. Serum Co, Cu, Mn and Fe levels increased in angeliq group. There was no significant difference among groups with regard to the serum Cd or Zn levels. It was concluded that hormonal replacement therapy might provide beneficial effects on blood antioxidant enzyme activity, heavy metal and some trace element levels in menopause. However, more studies are needed to verify and clarify the relationship between the hormonal replacement therapy and blood antioxidant status and trace element levels in menopause.
Effect of Exposure To Fluorine and 7, 12-Dimethyl Benzanthracene on Vascular Responses
(Parlar Scientific Publications (p S P), 2022) Bulduk, Bahattin; Uyar, Hasan; Oto, Gokhan; Ozdemir, Hulya; Gunbatar, Nizamettin; Bulduk, Mehmet; Elasan, Sadi
In this study, the effect of experimental administration of fluorine and DMBA, alone or in combination, on rats on vascular responses was investigated. After adaptation, the rats were randomly selected and divided into 9 groups, 10 male rats in each group. While sodium fluoride was applied daily in drinking water for 12 weeks to the groups to which fluoride will be applied; on the other hand, DMBA was dissolved in sesame oil and applied to the groups that needed it, once a week for a total of 12 weeks. The groups were determined as C, SO, 1NaF, 15NaF, 30NaF, DMBA, 1NaF+DMBA, 15NaF+DMBA and 30NaF+DMBA. Tensions in the thoracic aorta were provided with phenylephrine. Then, relaxation responses were recorded by giving ACh ((10-8'-7'-6'-5)) and SNP ((10-,-9,-8,-7,)(-6)(,)(-5)) at different cumulative concentrations. In the study, it was determined that fluorine caused the vessels to contract and DMBA to relax. Concurrent exposure to high amounts of fluorine and DMBA was observed to cause vasoconstriction.
The Effect of Moderate-Intensity Physical Exercise on Some Serum Inflammation Markers and the Immune System in Rats Fed Intermittent Fasting With a High-Fat Diet
(Mdpi, 2023) Gunbatar, Nizamettin; Bulduk, Bahattin; Bezgin, Selver; Oto, Gokhan; Bayiroglu, Fahri; Bulduk, Mehmet
Background and Objectives: This study aimed to investigate the impact of moderate-intensity physical exercise on serum inflammation markers and the immune system in rats that were fed a high-fat diet (HFD) with intermittent fasting. Materials and Methods: A total of 48 Wistar albino male rats were included in the study and divided into eight groups, each consisting of six rats. Group 1 served as the control group (CG), receiving a standard diet. Group 2 followed the standard nutrition program with intermittent fasting (CG + IF). Group 3 underwent exercise with a standard diet (CG + E). Group 4 underwent both a standard diet with intermittent fasting and exercise (CG + IF + E). Group 5 was fed a high-fat diet (HFD). Group 6 received a high-fat diet with intermittent fasting (HFD + IF). Group 7 followed a high-fat diet with exercise (HFD + E). Group 8 underwent both a high-fat diet with intermittent fasting and exercise (HFD + IF + E). The study lasted for 8 weeks. Results: The results of the analysis show that lymphocyte cell levels in groups HFD + IF, HFD + IF, and HFD + IF + E were higher compared to groups CG-HFD (p < 0.05). Additionally, B lymphocyte and monocyte cell levels were higher in group HFD + IF + E compared to groups CG, CG + IF, and CG + IF + E, as well as CG, CG + IF, and CG + E, respectively. TNF-alpha levels were significantly higher in group HFD compared to the other groups. Furthermore, IL 10 levels were higher in group HFD + IF + E compared to the other groups. Conclusions: These findings indicate that moderate exercise and intermittent fasting, particularly in groups fed a high-fat diet, increased anti-inflammatory cytokine levels, and certain immune system cell counts, while decreasing pro-inflammatory cytokine levels.