Browsing by Author "Yoruk, Ibrahim Hakki"

Now showing 1 - 6 of 6

Determination of Micronutrients and Oxidative Stress Status in the Blood of Stz-Induced Experimental Diabetic Rat Models
(Humana Press inc, 2014) Ragbetli, Cennet; Dede, Semiha; Tanritanir, Pinar; Yoruk, Ibrahim Hakki; Ragbetli, Murat Cetin
This study aims to research the effect of streptozotocin (STZ) at different doses on the serum micronutrients and oxidative stress status in diabetic rat models. Twenty male rats averaged 250 g and 3-4 months old were used as experimental models. They were put in four groups composed of five rats each. Diabetic was induced by administering STZ 55 and 65 mg/kg intraperitonally. The serum micronutrients including minerals and vitamins (Cu, Zn, Mg, Fe, vitamins D, E, and C) and oxidative stress (malondialdehyde, MDA) were determined. Cu, Zn, and Vitamin D3 levels were found to increase significantly in STZ groups (p < 0.005). Retinol levels decreased significantly in STZ groups (p < 0.005). In the groups administered 55 mg/kg STZ ferrum and vitamin C levels were found significantly lower than the other groups (p < 0.005). In the group given 65 mg/kg STZ a-tocopherol levels were highest (p < 0.005) among other groups. There was not any difference between the groups for MDA, Cu/Zn, and Mg. For both doses, oxidative stress status was not significantly affected within 48 h of the application, however, some micronutritents were affected significantly.
Effeciency of Various Supportive Treatments as a Cure for Anaemia in Cattle With Theileriosis
(Chulalongkorn Univ, 2014) Altug, Nun; Yuksek, Nazmi; Keles, Ihsan; Ozkan, Cumali; Yoruk, Ibrahim Hakki; Arslan, Sezai
The purpose of this study was to investigate the efficiency of various supportive treatments on the restoration of anaemia in theileriosis. A total of 20 cattle infected with theileriosis received intramuscularly a single dose of buparvaquone (2.5 mg/kg(-1) bw) and were divided into 4 equal groups according to the different therapy options: whereas no supportive treatment was applied in group 1, administrations of vitamin B complex, antioxidant vitamins (A, D, E and C), minerals and trace elements were performed in groups 2, 3 and 4, respectively. Haematological parameters, serum concentrations of antioxidant vitamins, minerals and trace elements as well as serum glutathion peroxidase (GSH-Px) and superoxide dismutase (SOD) activities were determined before treatment and 7 days after in infected animals and compared to control values from 10 healthy cattle. In the theileriosis affected cattle, remarkable decreases in haematocrit values, haemoglobinaemia and platelet counts were associated to decreased serum alpha- / gamma-tocopherol, vitamin C, vitamin B-12, Ca, Mg, Zn, Na, GSH-Px and SOD levels and to increased sideraemia. The iron concentrations remained elevated and some antioxidants (alpha- / gamma-tocopherol and vitamin C concentrations and GSH-Px and SOD activities) decreased in all treated cattle. Haematocrit values, haemoglobinaemia and vitamin B-12 concentrations also remained depressed but maximal increases were recorded in cattle receiving vitamins B as supportive therapy (group 2). In parallel, platelet numeration was significantly restored in all groups, but specifically in group 2. On the other hand, the maximal increases in alpha-tocopherol and Zn concentrations recorded in groups 3 and 4, respectively, were not associated with cure of anaemia. These results show that the most efficient supportive therapy in the cure of anaemia during theileriosis was vitamin B administration.
Effect of Seasonal Changes on Antioxidant Vitamins (A, E, C) and Mda in Levels of the Rainbow Trout (Oncorhynchus Mykiss Walbaum, 1792) Grown in Van City, Catak District
(Parlar Scientific Publications (p S P), 2015) Yoruk, Ibrahim Hakki; Yeltekin, Asli Cilingir; Demir, Halit
The present study was aimed to determine the seasonal changes of malondialdehyde (MDA), vitamin retinol (vitamin A), alpha-tocopherol (vitamin E) and ascorbic acid (vitamin C) levels. For this purpose, fishes were collected in the second week of the second month in each four seasons. Fishes were fed with the same food for one year. Fishes were selected from the same pool. Statistically significant differences were found between the levels of vitamin A, vitamin E, vitamin C and MDA (p<0.0001) levels. Consequently, it was determined that the levels of vitamin (A, E, C) showed significant differences between seasons and there was a marked increase in the vitamin levels especially in the winter season. The present study is the first study in this region. More studies are required to clarify the results.
The Levels of Trace Elements and Selected Vitamins in Goats With Chronic Fluorosis
(Tubitak Scientific & Technological Research Council Turkey, 2013) Altug, Nuri; Arslan, Sezai; Yuksek, Nazmi; Keles, Ihsan; Yoruk, Ibrahim Hakki; Basbugan, Yildiray; Aytekin, Ismail
This study was conducted to investigate the effects of chronic fluorosis on trace elements and vitamin levels in goats. Thirty-three goats exhibiting clinical signs of chronic fluorosis and 10 healthy goats from the same region were used. Animals with chronic fluorosis were divided into 2 groups according to their age as 1-3 years old and 4-6 years old. Blood samples were collected from all goats. Fluoride concentrations were determined with an ionometer. Na, K, and Cl levels were measured with ion-selective equipment and serum mineral substance levels were obtained by atomic absorption spectrophotometer. Ca, Mg, and P levels were determined by biochemistry analyzer. Serum vitamin concentrations were determined by liquid chromatography. The levels of serum copper, iron, manganese, and nickel decreased in goats with chronic fluorosis, whereas other trace elements did not change. Among vitamins, levels of serum a-tocopherol were increased, whereas retinol and vitamin D3 levels were not changed significantly differently between the fluorosis and control groups. In evaluation of goats with fluorosis according to age group, copper levels in the age group of 1-3 years and iron levels in the age group of 4-6 years were found to be lower than in the other age groups. Other minerals and all vitamin parameters were not different according to age. The results of the present study clearly showed that serum copper, iron, manganese, and nickel levels were reduced in goats with chronic fluorosis, and so goats with fluorosis should receive support in terms of these concerned trace elements.
Retinol, Α-Tocopherol and Vitamin D3 in White Muscle Disease
(Polish Soc veterinary Sciences Editorial office, 2018) Mert, Handan; Yildirim, Serkan; Yoruk, Ibrahim Hakki; Irak, Kivanc; Comba, Bahat; Mert, Nihat; Comba, Arzu
Vitamins are essential for the health of all living organisms. Vitamins E, A, D and K are known as fatsoluble vitamins, and deprivation of vitamin E causes various disorders, especially in the reproduction and cardiovascular systems and in muscle functions. Vitamin A, on the other hand, has roles in various biological functions - like eyesight - and the growth, reproduction and differentiation of epithelial cells. Vitamin A deficiency leads to the keratinization of the epithelium, and disorders related to the metaplasies of the genital and genitourinary systems. Conversely, vitamin D is defined as a pro-hormone and is responsible for Cahomeostasis, and thus indirectly affects the bone metabolism, bone structure, and cellular and neural functions of Ca. White Muscle Disease (WMD) can occur in newborn lambs, but is more commonly seen in lambs of up to 3 months of age. In this study, 30 lambs of 3 to 50-days-old from different flocks diagnosed with White Muscle Disease (WMD) were selected as research material, while the control group consisted of 8 healthy lambs. With the aim of clarifying the cause of WMD, serum fat-soluble vitamins, retinol, alpha-tocopherol and vitamin D3 levels were determined in 16 lambs. Gluteal and heart musclet issue samples also were taken from 30 lambs with WMD. The vitamin levels of the samples were analysed by HPLC. The levels of serum alpha-tocopherol, retinols, and vitamin D3 were foundto be low in the diseased animals, but only retinol (p < 0.001) and alpha-tocopherol (p < 0.001) level differences were statistically relevant. Macroscopically, Zenker's necrosis was determined in the heart muscles of 17 lambs, and in the gluteal and chest muscles of 6 lambs. 7 lambs displayed necrosis in both their heart and in gluteal muscles. The samples were analyzed microscopically to reach similar findings: swollen homogeneous pink muscles, pycnotic nuclei, and hyperaemic and haemorrhagic blood vessels in gluteal, chest and heart muscles. Hyaline degeneration and Zenker's necrosis, dystrophic regions in necrotic areas, cc was detected as a severe disease in lambs at an early stage of life with advanced degeneration in different muscle tissues. Deficiency of fat-soluble vitamins was also detected in the sick animals. Control group lambs had higher levels of alpha-tocopherol and retinol (p < 0.001) compared to the sick lambs.
Trace Elements, Heavy Metals and Vitamin Levels in Patients With Coronary Artery Disease
(Ivyspring int Publ, 2011) Cebi, Aysegul; Kaya, Yuksel; Gungor, Hasan; Demir, Halit; Yoruk, Ibrahim Hakki; Soylemez, Nihat; Tuncer, Mustafa
Aim: In the present study, we aimed to assess serum concentrations of zinc (Zn), copper (Cu), iron (Fe), cadmium (Cd), lead (Pb), manganese (Mn), vitamins A (retinol), D (cholecalciferol) and E (a-tocopherol) in patients with coronary artery disease (CAD) and to compare with healthy controls. Methods: A total of 30 CAD patients and 20 healthy subjects were included in this study. Atomic absorption spectrophotometry (UNICAM-929) was used to measure heavy metal and trace element concentrations. Serum a-tocopherol, retinol and cholecalciferol were measured simultaneously by high performance liquid chromatography (HPLC). Results: Demographic and baseline clinical characteristics were not statistically different between the groups. Serum concentrations of retinol (0.3521 +/- 0.1319 vs. 0.4313 +/- 0.0465 mmol/I, p=0.013), tocopherol (3.8630 +/- 1.3117 vs. 6.9124 +/- 1.0577 mmol/I, p<0.001), cholecalciferol (0.0209 +/- 0.0089 vs. 0.0304 +/- 0.0059 mmol/I, p<0.001) and Fe (0.5664 +/- 0.2360 vs. 1.0689 +/- 0,4452 mu g/dI, p<0.001) were significantly lower in CAD patients. In addition, while not statistically significant serum Cu (1.0164 +/- 0.2672 vs. 1.1934 +/- 0.4164 mu g/dI, p=0.073) concentrations were tended to be lower in patients with CAD, whereas serum lead (0.1449 +/- 0.0886 vs. 0.1019 +/- 0.0644 mu g/dI, p=0.069) concentrations tended to be higher. Conclusions: Serum level of trace elements and vitamins may be changed in patients with CAD. In this relatively small study we found that serum levels of retinol, tocopherol, cholecalciferol, iron and copper may be lower whereas serum lead concentrations may be increased in patients with CAD.