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    Comparative Morphometric Study of the Filiform Lingual Papilla in the Middle East Blind Mole Rat (Spalax ehrenbergi, Nehring, 1898) and Wistar Albino Rat
    (Soc Chilena Anatomia, 2017) Karakoc, Zelal; Ketani, Sennur; Ketani, M. Aydin; Kilinc, Mehmet
    This study aimed to reveal the morphometric differences between blind mole rats which live under ground and rats which live under laboratory conditions with regard to the length, base width, keratinization thickness and microscopic papilla depth. For this purpose, 7 adult blind mole rats and 7 adult Wistar albino rats were used in the study. All tongues were removed and fixed in 10 % neutral formalin. 4-5 micrometer of sections were obtained from paraffine sections which were obtained with routine histological follow ups and Crossman's modified triple staining was applied. While papilla length was found as 184.73 +/- 26.68 m m, base width 65.46 +/- 16.51 m m, keratinization thickness 11.60 +/- 1.37 m m, microscopic papilla depth 49.89 +/- 8.19 m m in blind rats; these values were found as 177.49 +/- 31.44 m m, 50.08 +/- 7.57 m m, 13.08 +/- 5.32 m m and 89.12 +/- 19.31 m m, respectively in rats. While a statistically significant difference was not detected between lengths (p> 0.05), the difference between papilla width was found significant (p< 0.05). While keratinization was found to be thicker on posterior side compared to anterior side in both species, a difference was not detected between keratinization thickness measurements (p> 0.05). The difference between two species with regard to papilla depth was detected to be significant (p< 0.001). The finding that papilla depth decreases as base width increases and the difference's being statistically significant suggested that living in different environments with different humidity could be effective on morphologic structures of the tongue in blind mole rats and rats.
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    Oxidant/Antioxidant Status, PON1 and ARES Activities, Trace Element Levels, and Histological Alterations in Sheep with Cystic Echinococcosis
    (Iranian Scientific Society Medical Entomology, 2018) Irak, Kivanc; Celik, Burcak Aslan; Karakoc, Zelal; Celik, Ozgur Yasar; Mert, Handan; Mert, Nihat; Kaya, Mustafa Oguzhan
    Background: Total antioxidant status (TAS), total oxidant status (TOS) and oxidative stress index (OSI), nitric oxide (NO), zinc (Zn), copper (Cu) levels, paraoxonase (PON1), arylesterase (ARES) activities, and biochemical changes were studied on sheep with cystic echinococcosis. Methods: The materials were taken from 2-3 yr old sheep slaughtered in Van Province, Turkey in 2017. Before the slaughter, blood samples were collected from the healthy sheep, while various organs of animals were examined for hydatid cysts after the slaughter. Thirty sheep were protoscolex positive, hydatic group, while 30 sheep that did not have any pathological lesions in organ examinations were accepted as the control group. TOS levels, PON1 and ARES activities, and Zn levels were determined by commercial kits, while Cu levels were determined by atomic absorption spectrophotometer. The collected data were then statistically analyzed. Results: Serum TOS and OSI levels were significantly higher in sheep with cystic echinococcosis compared to the control group (P<0.001). TAS levels (P<0.01), PON1 and ARES activities, on the other hand, were significantly higher in control group compared to the cystic echinococcosis group (P<0.001). There were no significant differences in Zn, NO and Cu levels between the groups. Conclusion: PON1 and ARES activities increased in sheep infected with cyst hydatid. The decline of antioxidant reserves in the metabolism results in excessive amounts of free radicals, along with alterations of the normal histological structure of the cystic organ and changes in trace element metabolism.
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    The epiphyseal plate closure phenomena for male and female Japanese quail (Coturnix coturnix japonica): histological and biochemical alterations
    (Revista Brasileira Zootecnia Brazilian Journal Animal Sci, 2020) Karakoc, Zelal; Irak, Kivanc
    This study was conducted to determine the effect of sex on ossification processes in quail by determining the exact closure timing of the epiphyseal plate in the proximal region of the femur. This was done by investigating the histological and biochemical parameters affecting the osteogenesis process that takes place following quail hatching to observe if any variation existed between males and females in this regard. For this purpose, blood samples were collected from six male and female specimens via IV catheters every week for the first 42 days that followed hatching. The samples were transferred into serum tubes, and PTH (PTH), triiodothyronine (T3), thyroxine (T4), inorganic phosphorus, calcium, and vitamin D values in the samples, which are known to have an impact on ossification, were analyzed. The specimens from which the blood samples were collected were then euthanized, and histological cut-sections that covered the epiphyseal growth plate were collected, along with the bone sections of the proximal regions of the right femur. Considering decalcification, these histological sections were kept in an ethylene diamine tetra acetic acid (EDTA) solution. Routine histological examinations were then conducted on these sections, after which they were embedded in paraffin. Crossman's modified triple staining method was used to prepare them, and Wilcoxon Signed Ranks Test was used to statistically evaluate whether the inspected biochemical parameters played a role in the ossification process of quail and whether a statistical difference existed between sexes in this regard. The findings of our study revealed that poultry animals also have five zones in the epiphyseal plate as do mammals, and they have calcified cartilage areas. The findings also indicate that, while ossification starts to occur both in male and female quail specimens, calcification occurs more frequently in females. It was determined that the proximal epiphyseal plate regions of the femur close at the end of the sixth week in both sexes of quail, although the calcification and ossification are more advanced in some females compared with males.