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1

Patterns of fish communities along a mountain river: the Upper Coruh River [Turkey]

100%
Yildirim A., Arslan M., Pegg M. A.
Polish Journal of Ecology
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2008
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tom 56
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nr 4
731-736
Distribution of fish communities along the submountain river (upper Coruh River, Northeastern of Turkey) was assessed to evaluate course of the longitudinal pattern in fish species diversity. The watershed area of Coruh Basin is 21.000 km², river length 376 km and it flows into Black Sea in northeastern Turkey at average discharge of 149 m³ s⁻¹ (range: 45.2–1215 m³ s⁻¹). Fixed-site electrofishing sampling at five sites located 15–210 km from river source at 2100–950 m a.s.l (Q values ranged 5–200 m³ s⁻¹) was conducted from March 2001 to March 2002. A total of 12 species were collected. Number of species (8–10) did not differ among sites suggesting no longitudinal changes, but Shannon-Wiener biodiversity index (H`) increased downstream from 1.23 to 1.82. Two distinct fish assemblages were identified. Most abundant species were Leuciscus cephalus and Alburnoides bipunctatus. Both Oncorhynchus mykiss and Cyprinus carpio collected rarely are exotic fishes for Coruh River.
2

Molecular detection of zoonotic microsporidia in domestic cats in Turkey: a preliminary study

88%
Pekmezci D., Pekmezci G. Z., Yildirim A., Duzlu O., Inci A.
Acta Parasitologica
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2019
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tom 64
|
nr 1
3
Content available remote

The role of prednisolone and epinephrine on gastric tissue and erythrocyte antioxidant status in adrenalectomized rats

88%
Yildirim A., Sahin Y. N., Suleyman H., Yilmaz A., Yildirim S.
Journal of Physiology and Pharmacology
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2007
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tom 58
|
nr 1
It has been believed that overproduction of free radicals and/or deficiency of antioxidant systems, and stress hormones may play a role in etiopathogenesis of many diseases, including gastric ulcer. This study evaluated whether there was an effect of adrenalectomy on lipid peroxidation [malondialdehyde (MDA)] and antioxidant [superoxide dismutase (SOD), glutathione peroxidase (GPX) and glutathione (GSH) levels] systems in gastric tissue and erythrocyte in rats. As well, the impacts of administration of prednisolone and epinephrine on these systems in adrenalectomized rats were investigated. Thirty-three rats were randomly grouped as sham-operated (group I), adrenalectomized (group II), adrenalectomized + prednisolone (group III) and adrenalectomized + epinephrine (group IV). After experimental procedures, blood and gastric tissues samples were taken from each animal in all groups. Colorimetric assays were employed to determine gastric tissue and erythrocyte levels of MDA and GSH, and SOD and GPX activities. Adrenalectomy in group II rats caused a marked decrease of SOD and GPX activities and MDA levels, and an increase of GSH levels in gastric tissue and erythrocyte, when compared to sham-operated rats. However, especially epinephrine injection after adrenalectomy resulted in a significantly increase of measured antioxidant enzyme activities and GSH levels in both gastric tissue and erythrocyte. These results indicate that adrenalectomy appeared to alter the levels of antioxidants and lipid peroxidation product in gastric tissue and erythrocyte. Thus, the present study provides a physiological regulatory role of adrenal gland in the maintenance of oxidant/antioxidant balance in gastric tissue and erythrocyte.
4

Refugees at the crossroads of continents: a molecular approach for cutaneous leishmaniasis among refugees in Turkey

76%
Ozbilgin A., Gencoglan G., Tunali V., Cavus I., Yildirim A., Gunduz C., Harman M.
Acta Parasitologica
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2020
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tom 65
|
nr 1
5

Targeting novel antigens in the arterial wall in thromboangiitis obliterans

76%
Guzel E., Topal E., Yildirim A., Atilla P., Akkus M., Dagdeviren A.
Folia Histochemica et Cytobiologica
|
2010
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tom 48
|
nr 1
134-141
6

A novel index in healthy infants and children - subarachnoid space: ventricle ratio

76%
Okur A., Kucuk O., Karacavus S., Yildirim A., Erkoc M. F., Erdogan Y., Serin H. I.
Folia Morphologica
|
2013
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tom 72
|
nr 2
Background: The subarachnoid space (SAS) and ventricular width (VW) in normal infants and children were studied with ultrasonography to provide the objective measurement and define a normal range for these measurements. The additional aim was to determine the stable ratio as a SAS/VW. Materials and methods: A total of 100 healthy subjects, including 48 males and 52 females, were studied. The cases were divided into 3 age groups: 0–6 months (n = 65), 7–12 months (n = 24) and > 13 months (n = 11). Transfontanel ultrasonography was performed in all the cases. SAS, VW and the SAS/VW ratios were calculated. The study was approved by the ethical committee. All parents were informed about the sonographic examination and their approvals were taken. Results: SAS was calculated as 3.1 (0.5–6) mm and VW was calculated as 3.6 (1.3–5) mm. SAS/VW ratio was 0.9 ± 0.3. There was no statistically significant difference among SAS, VW and SAS/VW ratios in 3–97 percentile group (p > 0.05). Conclusions: Ultrasonography can be used as a practicable and reproducible modality in the measurement of SAS and VW in healthy children. It is a non-invasive method and allows for serial follow-up. SAS/VW ratio can be used as an index in healthy children. (Folia Morphol 2013; 72, 2: 142–146)
7

Estimation of spleen volume and surface area of the newborns’ cadaveric spleen using stereological methods

76%
Sagiroglu A., Acer N., Ertekin T., Kurtoglu E., Coskun A., Yildirim A., Zararsiz G.
Folia Morphologica
|
2014
|
tom 73
|
nr 2
Background: The purpose of this study was to compare different techniques for the estimation of spleen volume and surface area using magnetic resonance imaging (MRI) images, ultrasonography (USG) images and cadaveric specimen, and to evaluate errors associated with volume estimation techniques based on fluid displacement. Materials and methods: Five newborn cadavers, aged 39.7 ± 1.5 weeks, weighted 2.220 ± 1.056 g, were included in the present study. Three different methods were used to assess the spleen volume. The vertical section technique was applied using cycloid test probes for estimation of spleen surface area in MRI. Results: The mean ± standard deviation of spleen volumes by fluid displacement was 4.82 ± 3.85 cm³. Volumes determined by the Cavalieri’s principle using physical section and point-counting techniques were 4.45 ± 3.47 cm³ and 4.65 ± 3.75 cm³, respectively; volumes measured by USG and cadaver using ellipsoid formula were 4.70 ± 3.02 cm³ and 5.98 ± 4.58 cm³, respectively. No significant differences were found among all methods (p > 0.05). The spleen surface area was calculated as a 32.3 ± 20.6 cm² by physical sections using cadaver and also it was determined on axial, sagittal and coronal MR planes as 24.9 ± 15.2 cm², 18.5 ± 5.92 cm² and 24.3 ± 12.7 cm², respectively. Conclusions: As a result, MR images allow an easy, reliable and reproducible volume and surface area estimation of normal and abnormal spleen using Cavalieri’s principle. We consider that our study may serve as a reference for similar studies to be conducted in future. (Folia Morphol 2014; 73, 2: 183–192)
8

The Toxicity of Essential Oils From Three Origanum Species Against Head Louse, Pediculus humanus capitis

64%
Arserim S. K., Cetin H., Yildirim A., Limoncu M. E., Cinbilgel I., Kaya T., Ozbel Y., Balcioglu I. C.
Acta Parasitologica
|
2021
|
tom 66
|
nr 3
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