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Öğe ADAMTS4, 5, 9, and 15 Expressions in the Autopsied Brain of Patients with Alzheimer's Disease: A Preliminary Immunohistochemistry Study(Kure Iletisim Grubu A S, 2016) Pehlivan, Sultan; Fedakar, Recep; Eren, Bulent; Akyol, Sumeyya; Eren, Filiz; Inanir, Nursel Turkmen; Gurses, Murat SerdarObjective: Recent studies performed in the central nervous system highlight the pathophysiological relevance of A disintegrin-like and metalloproteinase with thrombospondin motifs (ADAMTS) genes and their protein products. The determination of alterations in expression profiles of ADAMTS family genes in Alzheimer's disease (AD) patients may contribute to the explanation of tissue pathology and also new ideas for remedial approaches for this incurable but preventable disease. Therefore, the goal of this study was to describe and identify the distribution, characteristics, and any changes in the expression, in other words, immunoreactivity, for aggrecanases (ADAMTS4, 5, 9, and 15) proteins in AD brain. Methods: Nine cases that were autopsied in the Council of Forensic Medicine, Bursa Morgue Department in 2013, were selected. All of the cases were sent for autopsy to the institution within 8 hours after death. At autopsy, tissue samples were obtained for histopathological examination of organs for determining the cause of death. Out of these, two cases were diagnosed with AD by neurologists when they were alive. Immunohistochemical staining was performed on the brain slides by using relevant primary and secondary antibodies against aggrecanase proteins. All images were acquired using a X200 objective of a microscope (Olympus BX53) and evaluated by the staining intensity using a semi-quantitative scoring system. Results: ADAMTS4 and 5 were slightly under-expressed in the brains from autopsied AD cases compared to those of control brains and suggested that extracellular matrix (ECM) degradation was not endorsed in AD brain. On the other hand, ADAMTS9 and 15 aggrecanases were not found to be expressed in correspondent brain sections of AD and control cases. Conclusion: The current study demonstrated that some aggrecanases were found to be under-expressed in AD brains. Additional studies in which all ADAMTS enzymes will be studied in terms of mRNA and protein levels are needed to understand the relative contributions of ADAMTS genes and proteins in AD brains.Öğe Ani Kardiyak Ölümlerde Moleküler Otopsinin Önemi(2016) ŞAHİN, Yavuz; Fedakar, Recep; KÖK, Ertuğrul; ŞEN, AŞKIN; Akdeniz, Celal; tuzcu, volkan; DEMİRCAN, KadirAni kardiyak ölümler, sağlıklı genç yaştaki kişilerdeki ölümlerin önemli bir nedenidir. Adli otopsi uygulamaları ile ani kardiyak ölümün nedeni sıklıkla saptanamamaktadır. Ölüm sonrası [post mortem] yapılan genetik testler moleküler otopsi olarak adlandırılmaktadır ve moleküler otopsi ani kardiyak ölüme neden olan genetik geçişli hastalıkların önemini göstermistir. Ani kardiyak ölümlere neden olan genetik hastalıklara hipertrofik kardiyomiyopati gibi miyokardiyal hastalıklar ve uzun QT sendromu gibi kanalopatiler örnek verilebilir. Bu tür genetik geçişli hastalıklar kalıtım özellikleri nedenleriyle risk altındaki akrabaları için dikkate alınmalıdır. Ani kardiyak ölümlerde, postmortem rutin toksikolojik ve patolojik inceleme ile herhangi bir ölüm nedeni saptanamadı- ğında, postmortem kandan genetik testler ile birlikte özel multidisipliner yaklaşım tanı için kritiktir. Kesin tanı konulduktan sonra vakanın yaşayan akrabalarını genetik kökenli ani kardiyak ölüm olaylarına karşı korumak gereklidir. Görüntüleme teknolojisindeki ve genetik dünyasındaki gelişmeler ani kardiyak ölümlerin tanısal sürecini kolaylaştıracaktır.Öğe Immunohistochemical Determination of HIF, TSP-1, ADAMTS1, and ADAMTS8 Expressions in the Brains of Alzheimer's Disease Patients: A Preliminary Autopsy Study(Erciyes Univ Sch Medicine, 2016) Inanir, Nursel Turkmen; Eren, Filiz; Fedakar, Recep; Eren, Bulent; Demircan, Kadir; Gurses, Murat Serdar; Ural, MustafaObjective: Alzheimer's disease (AD) is a progressive neurodegenerative disease that mostly affects the elderly population. Recent studies performed in AD highlight the pathophysiological relevance of disintegrin and metalloproteinase with thrombospondin type 1-like motifs (ADAMTS) genes and their products, namely hypoxia inducible factor-1 (HIF-1) and thrombospondin-1 (TSP-1). Thus, the aim of this study was to describe and identify the distribution, characteristics, and any changes in the expression and immunoreactivity for HIF-1, TSP-1, and ADAMTS1 and 8 in AD brains. Materials and Methods: Nine patients who were autopsied in the Council of Forensic Medicine, Bursa Morgue Department in 2013, were selected. All patients were sent for autopsy to the Morgue Department within 8 h after death. At the autopsy, tissue samples of the organs were obtained for histopathological examination for determining the cause of death. Among these, two patients were clinically diagnosed with AD. Results: Immunohistochemical staining was performed, and the staining intensity/extensity was evaluated using a semi-quantitative scoring system. Median distribution (extensity) scores of the immunohistochemical staining were estimated as 2 for HIF-1, 0.67 for TSP-1, 3.11 for ADAMTS1, and 2.78 for ADAMTS8. Intensity scores were estimated as 1.22 for HIF-1, 0.56 for TSP-1, 3 for ADAMTS1, and 2.11 for ADAMTS8. Conclusion: Our study suggests that ADAMTS1 and ADAMTS8 expressions are not specific for AD. To understand and provide definitive data on all aspects of metalloproteinases, extracellular matrix proteins, and transcriptional factor effects to AD, further studies are needed, where other metalloproteinases and related molecules/enzymes should be studied.
