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    Adenohibernoma: A Rare Breast Tumor
    (Sage Publications Inc, 2012) Ayva, Şebnem Kupana; Öztürk, Fahriye Karataş; Obut, Hasan
    Adenohibernoma of the breast is a very rare tumor composed of brown fat tissue and intermingled glandular tissue. There are only 2 case reports in literature. This study reports the third case of adenohibernoma of the breast, which is not accompanied by breast cancer differing from the previous cases. And, to the best of the authors' knowledge, this is also the first case of adenohibernoma of the breast that has demonstrated adipophilin expression immunohistochemically.
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    Evaluation of protective effects of the alpha lipoic acid after spinal cord injury: An animal study
    (Elsevier Sci Ltd, 2010) Tas, Nilüfer; Bakar, Bülent; Kasımcan, Mustafa Ömür; Gazyağcı, Serkal; Ayva, Şebnem Kupana; Kilinç, Kamer; Evliyaoglu, Çetin
    Purpose: Many of the hypotheses have been suggested to explain the mechanism of the secondary effects of traumatic spinal cord injury (TSCI) as follows: ischaemia/reperfusion disability theory, free radicals theory, exitotoxicity theory, immunological destruction theory, apoptosis theory. Recently, free radicals, lipid peroxidation reactions and apoptosis theories have been much more accepted than others. In this study, possible protective effects of the alpha lipoic acid were evaluated in the traumatic spinal cord of rats. Methods: Using a well characterised weight drop technique, spinal cord contusions were formed to 48 Wistar albino rats at thoracal 8-10 level. After alpha lipoic acid and methylprednisolone were administered intraperitoneally, the spinal cord tissues were harvested for histopathological and biochemical studies. Results: Histopathological examination results showed that neither methylprednisolone nor alpha lipoic acid can play an act to decrease or block the neural tissue destruction and necrosis in hyperacute and subacute stage of the TSCI in rats. Biochemical study results showed that alpha lipoic acid was much more decreased the lipid peroxidation levels than methylprednisolone in subacute stage. However, none of the agents was changed the myeloperoxidation level in subacute stage. Interpretation: Alpha lipoic acid and methylprednisolone administrations did not alter the onset or degree of necrosis at the zone of the TSCI in rats. On the other hand, alpha lipoic acid is more effective than methylprednisolone treatment for the prevention of lipid peroxidation after spinal cord injury. (C) 2010 Elsevier Ltd. All rights reserved.
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    Neuroprotective effects of racemic ketamine and (S)-ketamine on spinal cord injury in rat
    (Elsevier Sci Ltd, 2012) Köse, Emine Arzu; Bakar, Bülent; Ayva, Şebnem Kupana; Kılınç, Kamer; Apan, Alpaslan
    Background: The aim of this study was to investigate and to compare the potential neuroprotective effects of racemic ketamine, (S)-ketamine and methylprednisolone after an experimental spinal cord injury model in rats. Methods: Fifty-nine Wistar albino rats were divided into three main groups as acute stage (A), subacute stage (SA) and sham groups and then acute and subacute stage groups were divided into four groups regarding the used drug as control (CONT), racemic ketamine (RK), (S)-ketamine (SK) and methylprednisolone (MP) groups. A dorsal laminectomy was performed; and spinal cord injury was induced by using a temporary aneurysm clip. Four hours later from the clip compression, except those of the sham and control groups, the drugs (60 mg/kg racemic ketamine, 60 mg/kg (S)-ketamine or 30 mg/kg methylprednisolone) were administered intraperitoneally. At 72th h and 7th days of the study, the spinal cords of rats were removed from T8 level to the conus medullaris level. The specimens were and evaluated histopathologically, tissue lipid peroxidation (LPO) and myeloperoxidation (MPO) levels were measured and biochemically. Results: The histopathological results were similar both in the acute and in the subacute stage groups. There was a statistically significant difference among all groups regarding the tissue LPO levels (p < 0.001). There was a statistically significant difference between the CONT-A group and the MP-A, RK-A and SK-A groups (p = 0.004, p < 0.001 and p = 0.007, respectively) in acute stage and between the CONT-SA group and SK-SA group (p = 0.002) in subacute stage. There was a statistically significant difference among all groups regarding the tissue MPO levels (p = 0.001). The median MPO levels were similar among acute stage groups (p = 0.057), but there was a statistical difference among subacute stage groups (p = 0.046). Conclusion: (S)-ketamine is more effective than methylprednisolone and racemic ketamine to reduce the LPO levels in subacute stage of spinal cord injury in rats. And, it is as effective as methylprednisolone in preventing secondary spinal cord injury histopathologically. (c) 2012 Elsevier Ltd. All rights reserved.