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Öğe Histomorphometric examination of the pineal gland in foals and adult horses(Chartered Inst. of Building Services Engineers, 2018) Bolat D.; Kürüm A.; Bahar S.; Karahan S.This study was conducted to evaluate the pineal glands of the foal and adult horses with histomorphometry. The pineal glands were sectioned at a thickness of 40 µm and stained with AgNOR for stereological analyses. The weight and volume of the pineal gland as well as the number of pinealocytes were significantly higher in the adult horses (P=0.009). However, the number of pinealocytes in per volume was similar between foals and adult horses. Such data indicate that growth in the size of the gland is related to increase in the number of pinealocytes. The pinealocyte nucleus is significantly larger in adults (P= 0.009). Such a size difference should be further investigated if it is due to an increase in the number of cells with increased DNA content. Melanin was distributed throughout the foal pineal gland whereas it was focally localized to connective tissue in adults. The different patterns in melanin distribution suggest that foals and adult horses may differ by means of melanin metabolism in the pineal gland. © 2018, Chartered Inst. of Building Services Engineers. All rights reserved.Öğe The morphometric properties of the lumbar spinal cord segments in horses(Medwell Journals, 2014) Selcuk M.L.; Bahar S.The aim of this study was to determine morphometric features of lumbar segments of the spinal cord of horses. Spinal cords of six horses from different breeds and sexes were used. Lumbar parts of the cords were dissected out from vertebral columns and segmentation was performed. Macroscopic measurements were done on the segments and then routine histological procedure was applied. Segments were sliced transversally at 3.8 mm thickness. Samples were cut at 10 ?m thickness and stained with May-Grunwald-Giemsa. Slides images were used by stereo investigator. Diameter measurements were carried out and area and volume calculations were performed by using Cavalieri principle. The weight, length and volume ratios of the lumbar parts to spinal cord were 14.7, 13 and 14%, respectively. A decrease in lengths of the segments from L1 to L6 was observed. In the microscopic analysis, L4 and L5 had the biggest transverse diameters however L6 had the largest vertical diameter. L5 had the largest values of cross-sectional and white matter area however L6 had the largest value of gray matter. Volumes of all segments except for L6 were similar to each other and the largest volume of gray matter and the largest volume of white matter were observed in L5 and L3, respectively. It was determined that the volume ratio of gray matter to the volumes of segments increased from L1 to L6 whereas volume of white matter was decreased in those segments. In conclusion, the data obtained will contribute to the morphology of related region and the further studies. © Medwell Journals, 2014.Öğe The presence of musculus psoas minor in weightlifting athletes of the olympic preparation center(Horizon Research Publishing, 2018) Erdağı K.; Poyraz N.; Aslan H.; Işık B.; Bahar S.The study aims to analyze the presence of musculus psoas minor through axial magnetic resonance imaging obtained from national weightlifting athletes. The study included 12 men and 12 women national weightlifting athletes having trained regularly and participated in national and international tournaments. Axial imaging from the 12 th thoracic vertebrae to the trochanter minor of femur was taken by using 1.5 Tesla magnetic imaging device. In our study including 24 athlete participants in total, we found out that the muscle is generally present on double sides of 29.16%, on the right side only of 8.33% and on the left side only of 8.33% of the participants. The muscle was not present on 54.16% of the participants. As a result, we conclude that the absence of musculus psoas minor in weightlifting athletes may be considered as a disadvantage factor for athletic skills. © 2018 by authors, all rights reserved.Öğe Selective gray and white matter staining of the horse spinal cord(Veteriner Fakultesi Dergisi, 2012) Bolat D.; Bahar S.; Sur E.; Selcuk M.L.; Tipirdamaz S.The ratio of gray and white matter is an important clinical parameter in the diagnosis of diffuse and compressive diseases of the spinal cord. Although histological methods are used to determine this parameter, there are some difficulties encountered in histological studies related to tissue size. The aim of this study was to evaluate possible modifications to overcome these difficulties. In the study, nine tissue samples taken from the C6 segment of a female Shetland pony and selected by systematic random sampling were used. The dehydration process of the spinal cord of the horse was supported by applying a vacuum. Paraffin blocks were prepared and cut into 10 ?m sections to be stained separately with the different staining methods. Six different staining methods, including Modified May - Grunwald - Giemsa (MMGG), were compared and used to image entire slides. The stains, Hematoxylin & eosin (H&E), May-Grunwald-Giemsa (MGG), Masson's trichrome (MT), AgNORs, Kluver Barrera (KB) and MMGG, were evaluated macroscopically and microscopically by participants who were unaware of which staining methods had been used. The staining methods were scored from worst (1) to best (5) using a Likert scale. Vacuum application was found to reduce the difficulties related to inadequate tissue dehydration. MMGG was selected as the best staining method in differentiating gray and white matter in the spinal cord of the horse.Öğe Two and three-dimensional computed tomographic anatomy of the guttural pouch in Arabian foals(Medwell Journals, 2014) Bahar S.; Dayan M.O.The guttural pouches have an elusive anatomy due to their location, adjacency and variable shape. Computed Tomography (CT) is utilized in visualizing the details of complex body parts and their in creating 3-Dimensional (3D) Models. In the present study was aimed to demonstrate sectional reference anatomical details of the pouches and to obtain their certain morphometric features. Heads of 5 purebred female Arabian foals were scanned by helical CT. CT was quite successful in demonstrating the borders of the guttural pouches and the surrounding bone and muscular tissues. The guttural pouches volume was 82.1±7.69 mL whereas volume ratios of the lateral and medial compartments were 16 and 84%. Pouches were observed as the largest air cavity of the head's total air space. 3D Models may provide substantial advantages in determining topographic, morphologic, morphometric features of the guttural pouches and in pre-surgical planning for this region. © Medwell Journals, 2014.
