46 results on '"Dağtekin, Ahmet"'
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2. A Computed Tomography Study of the Prechiasmatic Sulcus Anatomy in Children
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Beger, Orhan, Ten, Barış, Balcı, Yüksel, Çakır, Salim, Özalp, Hakan, Hamzaoğlu, Vural, Vayisoğlu, Yusuf, Dağtekin, Ahmet, Bağdatoğlu, Celal, and Talas, Derya Ümit
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- 2020
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3. Fetal Anatomy of the Optic Strut and Prechiasmatic Sulcus with a Clinical Perspective
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Beger, Orhan, Taghipour, Pourya, Çakır, Salim, Hamzaoğlu, Vural, Özalp, Hakan, Kara, Engin, Vayisoğlu, Yusuf, Dağtekin, Oykut, Dağtekin, Ahmet, Bağdatoğlu, Celal, Öztürk, Ahmet Hakan, and Talas, Derya Ümit
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- 2020
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4. Radioanatomic Assessment of the Geniculate Ganglion Dehiscence and Dimension: A Cadaveric Study
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Hamzaoğlu, Vural, Beger, Orhan, Erdoğan, Osman, Kara, Engin, Vayisoğlu, Yusuf, Taghipour, Pourya, Özalp, Hakan, Karataş, Derya, Avcı, Emel, Dağtekin, Ahmet, Bağdatoğlu, Celal, Öztürk, Ahmet Hakan, and Talas, Derya Ümit
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- 2020
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5. Morphometric properties of the facial canal in children: A retrospective computed tomography study
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Beger, Orhan, Erdoğan, Osman, Kara, Engin, Vayisoğlu, Yusuf, Görür, Kemal, İsmi, Onur, Gayi, Sevilay, Hamzaoğlu, Vural, Özalp, Hakan, Dağtekin, Ahmet, Bağdatoğlu, Celal, Öztürk, Ahmet Hakan, and Talas, Derya Ümit
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- 2019
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6. Morphometric properties of the facial nerve in fetal temporal bones
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Talas, Derya Ümit, Beger, Orhan, Koç, Turan, Hamzaoğlu, Vural, Özalp, Hakan, Mavruk, Melike, Yıldırım, Cemre, Güzelyüz, İrem, Vayisoğlu, Yusuf, Uzmansel, Deniz, Farsak, Mehmet, and Dağtekin, Ahmet
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- 2019
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7. Evaluation of the Foramen Magnum Area Calculated by Different Methods: A Radioanatomic Study
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Beger, Orhan, Erdoğan, Osman, Çetin, Zeynep, Kara, Engin, Vayisoğlu, Yusuf, Hamzaoğlu, Vural, Özalp, Hakan, Dağtekin, Ahmet, Bağdatoğlu, Celal, Öztürk, Ahmet Hakan, and Talas, Derya Ümit
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- 2019
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8. Elliptical constructions in contemporary Uyhgur Turkish
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Dağtekin, Ahmet, Harbalioğlu, Neşe, and Nevşehir Hacı Bektaş Veli Üniversitesi/fen-edebiyat fakültesi/çağdaş Türk lehçeleri ve edebiyatları bölümü/Güney-Doğu Türk lehçeleri ve edebiyatları anabilim dalı
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Eksilti ,Yeni Uygur Türkçesinde eksiltili yapılar ,New Uyghur Turkish ,Elliptical structures in New Uyghur Turkish ,Düşüm ,Yeni Uygur Türkçesi ,Reduction - Abstract
Eksilti dil kuralları ve cümlenin anlam bütünlüğü esas alınarak zamandan tasarruf etmek, anlaşılırlığı kolaylaştırmak, anlatımı etkili kılmak, tekrardan kaçınmak amacıyla gereksiz görülen eklerin, kelime gruplarının ya da cümle ögelerinin düşürülmesi ile meydana gelen bir dil olaydır. Eksilti, Çağdaş Uygur Türkçesinde kémeytiş olarak adlandırılmaktadır. Söz konusu bu çalışma ek eksiltisi, cümle ögelerinde eksilti ve kelime gruplarında eksilti olmak üzere üç ana bölüme dayanmaktadır. Çalışmamızda öncelikle ek eksiltisi üzerinde durulmuş, ek eksiltisi beş alt başlık altında incelenerek örneklerden hareketle Yeni Uygur Türkçesindeki ek eksiltileri ortaya konmaya çalışılmıştır. Kelime Gruplarında Eksilti bölümünde Yeni Uygur Türkçesindeki eksiltiler isim tamlaması, sıfat tamlaması ve birleşik fiillerde eksilti; Cümle Ögelerinde Eksilti bölümünde ise yüklem, özne, nesne, dolaylı tümleç ve zarf tümlecindeki eksiltiler üzerinde durularak konu örneklerle desteklenmeye çalışılmıştır. Yeni Uygur Türkçesinde konuşma ve yazı dilinde eksiltiye sıkça başvurulduğu görülmektedir. Ek eksiltilerinden hâl eki, iyelik eki ve çokluk eklerindeki eksiltilerin ikileme ve bağlama gruplarında sıklıkla karşımıza çıktığı, ikinci unsurun hâl eki alırken birinci unsurlarda hâl ekinin çoğunlukla düşürüldüğü görülmektedir. Yeni Uygur Türkçesinde bildirme eki eksiltisi Türkiye Türkçesine göre daha yaygın bir kullanımla karşımıza çıkmaktadır. Kelime grubu eksiltilerinde isim tamlamalarında sıklıkla eksiltiye başvurulduğu, ancak belirtili isim tamlamalarından eksiltilerin belirtisiz isim tamlamalarındakilere kıyasla daha fazla olduğu dikkati çekmektedir. Cümle ögelerindeki eksiltilerde yüklem eksiltileri basit cümlede karşımıza çıkabildiği gibi birleşik, sıralı ve bağlı cümlelerde de karşımıza çıkabilir. Özne eksiltisi, cümle ögelerinde yaygın görülen eksilti türlerinde biridir. Kişi ekinin kullanılması çoğunlukla öznede eksiltiye gidilmesine sebebiyet vermektedir. Belirtili nesne eksiltisi belirtisiz nesne eksiltisine göre daha fazla görülürken zarf tümleci eksiltileri ise olaya dayalı metinlerde daha fazla görülmektedir. Saving time, facilitating understanding, based on elliptical language rules and the semantic integrity of the sentence, By reducing unnecessary affixes, word groups or sentence elements in order to make the expression effective and to avoid repetition language is an event. Ellipsis is called kémeytiş in Contemporary Uyghur Turkish. This study is based on three main parts: suffix ellipsis, ellipsis in sentence elements and ellipsis in word groups. In our study, first of all, affix ellipsis was emphasized, affix ellipsis was examined under five sub-headings and based on examples. It has been tried to reveal the suffixes in New Uyghur Turkish. In New Uyghur Turkish suffixes noun phrase, adjective phrase and suffix in compound verbs; In the ellipsis section, the predicate, subject, object, The subject has been tried to be supported with examples by emphasizing the ellipses in the indirect object and adverb clause. It is seen that ellipsis is frequently used in spoken and written language in New Uyghur Turkish. Case suffix, possessive suffix and It can be seen that the ellipsis in plural suffixes are frequently encountered in reduplication and conjunction groups, while the second element becomes the case suffix, the first It is seen that the case suffix is mostly dropped in the elements. Declarative suffix in New Uyghur Turkish compared to Turkey Turkish appears in more widespread use. The ellipsis is frequently used in noun phrases in word group ellipses, however, it is noteworthy that the declensions of the definite noun clauses are more than the ones in the indefinite noun clauses. Verb ellipsis can be seen in simple sentences as well as in compound, ordered and connected sentences. May appear Subject ellipsis is one of the common types of ellipsis in sentence elements. The use of the person suffix is mostly causes a reduction in the subject. While the definite object ellipsis is seen more than the indefinite object ellipsis, adverbial clause ellipses are more common in event-based texts.
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- 2022
9. Kraniyoservikal bileşkenin travmatik yaralanmaları: 51 olgunun retrospektif analizi.
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Karataş, Derya, Uygur, Saygı, Koyuncu, Ömer Ruşen, Barut, Irmak Tekeli, Doruk, Efekan, Başar, Furkan, and Dağtekin, Ahmet
- Abstract
Copyright of Mersin Üniversitesi sağlık Bilimleri Dergisi is the property of Mersin University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2023
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10. Posterior cranial fossa morphometry in symptomatic adult Chiari I malformation patients: Comparative clinical and anatomical study
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Dagtekin, Ahmet, Avci, Emel, Kara, Engin, Uzmansel, Deniz, Dagtekin, Oykut, Koseoglu, Aslihan, Talas, Derya, and Bagdatoglu, Celal
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- 2011
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11. Malignancy incidence and primary tumor investigation in the patients with vertebral compression fractures by means of combined Tc-99m methylene diphosphonate bone scintigraphy and fluorodeoxyglucose positron emission tomography/computed tomography
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Koç, ZehraPınar, primary, Kara, PelinÖzcan, additional, Dağtekin, Ahmet, additional, and Örekici, Gülhan, additional
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- 2022
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12. Optik Strut Morfometrisi: Radyoanatomik Çalışma
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Özalp, Hakan, primary, Ten, Barış, additional, Beger, Orhan, additional, Taghipour, Pourya, additional, Çakır, Salim, additional, Özdemir, Deniz Ladin, additional, Müdüroğlu, Fatma, additional, Hamzaoğlu, Vural, additional, Dağtekin, Ahmet, additional, and Talas, Derya Ümit, additional
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- 2021
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13. The effects of different recovery methods on anaerobic performance in combat sports athletes
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Yarar, Hakan, primary, Gök, Ümit, additional, Dağtekin, Ahmet, additional, Saçan, Yunus, additional, and Eroğlu, Hüseyin, additional
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- 2021
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14. Cochleo-facial corridor to the vestibule and fundus of the internal auditory canal through oval window: a minimal invasive and cochlea sparing approach
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Talas, Derya Ümit, primary, Beger, Orhan, additional, Vayisoğlu, Yusuf, additional, Hamzaoğlu, Vural, additional, Özalp, Hakan, additional, Çakır, Salim, additional, Dağtekin, Ahmet, additional, and Bağdatoğlu, Celal, additional
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- 2021
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15. Vertebroplasty / Kyphoplasty for Osteoporotic Vertebra Fractures - Advantages / Disadvantages
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Kiraz, İlker and Dağtekin, Ahmet
- Abstract
Omurgada görülen osteoportik kompresyon kırıkları özellikle ileri yaşlarda oldukça yaygın olarak izlenen patolojilerdir. Osteoporotikvertebra kırıkları (OVK) belirgin nörolojik kayıplara yol açmasa dahi özellikle ileri yaşlardaki insanlarda önemli ölçüde mobilizasyonukısıtlayarak morbidite ve mortalitenin artmasıyla sonuçlanmaktadır. Son yıllarda yaygın şekilde uygulanan bir cerrahi tedavi olankifoplasti (KP) ve vertebroplastinin (VP) temel endikasyonu ağrılı OVK’dır. VP ve KP’de amaç vertebral kemik yapıyı güçlendirerekağrının en aza indirilmesi, kifozun önlemesi ve daha iyi yaşam koşullarının sağlamasıdır. Bu cerrahi yöntemler oldukça yaygınuygulanmasına karşın sementin ekstravaze olması nedeniyle pulmoner emboli veya spinal kanal içine kaçması nedeniyle omurilikbasısı gibi ciddi komplikasyonlara neden olabileceği unutulmamalıdır. Ancak vertebroplasti ve kifoplasti, deneyimli cerrahlartarafından doğru endikasyon ve teknikle uygulandığında OVK’nın tedavisinde güvenle kullanılan bir cerrahi yöntemdir. Sonuç olarakbu cerrahi yöntemler ile hedeflenen minimal invaziv bir yolla ağrının en aza indirilmesi, kifozun önlenmesi, beklenen morbiditemortaliteden korunma ve yaşam kalitesinin artırılmasıdır.
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- 2020
16. İnsan fetüslerinde hipoglossal kanalın bölmelenme paterni
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HAMZAOĞLU, Vural, BEGER, Orhan, ÖZALP, Hakan, VAYİSOĞLU, Yusuf, DAĞTEKİN, Ahmet, BAĞDATOĞLU, Celal, and TALAS, Derya Ümit
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Health Care Sciences and Services ,Hypoglossal canal,Fetus,Septum ,Hipoglossal kanal,Fetüs,Septum ,Sağlık Bilimleri ve Hizmetleri - Abstract
Aim:The aim of this study was to determine the presence and ratio of septum or doublehypoglossal canals in human fetuses. Method:In the inventory of the Department of Anatomy, Faculty of Medicine, twenty-fivefetuses (14 males and 11 females) with a mean age of 23.36 ± 2.63 weeks ofgestation were included in the study. Results:Double hypoglossal canal was detected in 9 (36%) of the 25 fetuses investigated.The double hypoglossal presence was bilateral in 2 (%8) fetuses, while 7 (%28)fetuses were unilateral. The presence of double hypoglossal canal incidence was12% on the right and 16% on the left. There was norelationship between the presence of a septum and gestational age, gender orside. Conclusion: The division ofthe hypoglossal canal with a bony septum is of great importance forneurosurgeons and radiologists, especially for posterior cranial fossaoperations such as hypoglossal canal schwannomas. Additionally, the data presentedin this study may be valuable for anatomists and anthropologists inunderstanding the development of the skull base., Amaç: Buçalışmanın amacı, insan fetüslerinde septum veya çift hipoglossal kanal insidansınıtespit etmektir. Yöntem: TıpFakültesi Anatomi Anabilim Dalı envanterinde bulunan ortalama 23.36±2.63 haftalık 25 fetüs (14 erkek, 11kız) çalışmaya dahil edildi. Bulgular:Fetüslerin 9’unda (%36) septum vardı. Fetüslerin 2’sinde (%8) bilateral, 3’ünde(%12) sağ ve 4’ünde (%16) sol tarafta çift hipoglossal kanal tespit edildi. Gestasyonalyaş, cinsiyet ve taraflar ile septum varlığı arasında bir ilişki görülmedi. Sonuç: Hipoglossal kanalın bölümlenmepaterni özellikle hipoglossal kanal schwannoma’ları gibi posterior kraniyalfossa operasyonları açısından önem taşıdığından nörocerrahlar ve radyololariçin büyük önem taşımaktadır. Ayrıca çalışmamızdaki veriler, kafa tabanınıngelişiminin anlaşılması açısından anatomistler ve antropologlar için kıymetliolabilir.
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- 2019
17. Management of hardware infections in deep-brain stimulation: A 4-year, single-center experience
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Hamzaoğlu, Vural, primary, Özalp, Hakan, additional, Doğu, Okan, additional, Öksüz, Nevra, additional, Aydın, Sabri, additional, Akbıyık, Tolga, additional, Dağtekin, Ahmet, additional, Avcı, Emel, additional, and Bağdatoğlu, Celal, additional
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- 2020
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18. The factors affecting the prognosis of surgically treated acute epidural hematoma patients: The retrospective analysis of 89 cases
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ÖZALP, Hakan, primary, ESEN, Kaan, additional, AVCI, Emel, additional, AKBIYIK, Tolga, additional, KOYUNCU, Ömer Ruşen, additional, BAĞDATOĞLU, Celal, additional, DAĞTEKİN, Ahmet, additional, and HAMZAOĞLU, Vural, additional
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- 2019
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19. Division pattern of the hypoglossal canal in human fetuses
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HAMZAOĞLU, Vural, primary, BEGER, Orhan, additional, ÖZALP, Hakan, additional, VAYİSOĞLU, Yusuf, additional, DAĞTEKİN, Ahmet, additional, BAĞDATOĞLU, Celal, additional, and TALAS, Derya Ümit, additional
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- 2019
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20. Morphometric Analysis of the Clivus in Human Dry Skulls: A Radioanatomical Study
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Özalp, Hakan, primary, Beğer, Orhan, additional, Erdoğan, Osman, additional, Kara, Engin, additional, Hamzaoğlu, Vural, additional, Vayisoğlu, Yusuf, additional, Dağtekin, Ahmet, additional, Öztürk, Ahmet Hakan, additional, Bağdatoğlu, Celal, additional, and Talaş, Derya Ümit, additional
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- 2019
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21. Surgical Treatment Outcomes of Our Patients with Chronic Subdural Hematoma: A Review of Seventy Six Cases
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Hamzaoğlu, Vural, primary, Özalp, Hakan, additional, Avcı, Emel, additional, Bağdatoğlu, Celal, additional, and Dağtekin, Ahmet, additional
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- 2018
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22. Detection of unknown primary tumor in patients presented with brain metastasis by F-18 fluorodeoxyglucose positron emission tomography/computed tomography
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Koç, Zehra Pınar, primary, Kara, Pelin Özcan, additional, and Dağtekin, Ahmet, additional
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- 2018
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23. İnsan Kuru Kafalarında Klivus'un Morfometrik Analizi: Radyoanatomik Çalışma.
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Özalp, Hakan, Beğer, Orhan, Erdoğan, Osman, Kara, Engin, Hamzaoğlu, Vural, Vayisoğlu, Yusuf, Dağtekin, Ahmet, Öztürk, Ahmet Hakan, Bağdatoğlu, Celal, and Talaş, Derya Ümit
- Abstract
Copyright of Journal of Ankara University Faculty of Medicine / Ankara Üniversitesi Tip Fakültesi Mecmuasi is the property of Galenos Yayinevi Tic. LTD. STI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2019
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24. Evaluation of the origin and branching patterns of the iliolumbar artery and its implications on pelvic and vertebral surgery
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Koç, Turan, primary, Gilan, İsmail Y., additional, Aktekin, Mustafa, additional, Kurtoğlu, Zeliha, additional, Dağtekin, Ahmet, additional, Aytaç, Güneş, additional, and Coşgun, Erdal, additional
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- 2016
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25. Kronik Subdural Hematomlu Hastalarda Cerrahi Tedavi Sonuçlarımız: Yetmiş Altı Hastanın Analizi.
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Hamzaoğlu, Vural, Özalp, Hakan, Avcı, Emel, Bağdatoğlu, Celal, and Dağtekin, Ahmet
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TREATMENT effectiveness ,SUBDURAL hematoma ,INTRACRANIAL hematoma ,HEMORRHAGE ,CEREBRAL atrophy - Abstract
Copyright of Journal of Ankara University Faculty of Medicine / Ankara Üniversitesi Tip Fakültesi Mecmuasi is the property of Galenos Yayinevi Tic. LTD. STI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2018
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26. The effects of fibroblast growth factor-2 and pluripotent astrocytic stem cells on cognitive function in a rat model of neonatal hypoxic-ischemic brain injury
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Çelik, Yalçın, primary, Atıcı, Aytuğ, additional, Beydağı, Hüseyin, additional, Reşitoğlu, Bora, additional, Yılmaz, Necat, additional, Ün, İsmail, additional, Polat, Ayşe, additional, Bağdatoğlu, Celal, additional, Dağtekin, Ahmet, additional, Sungur, Mehmet Ali, additional, and Tiftik, Nalan, additional
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- 2015
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27. İnsan İntervertebral Disk Materyalinde Lipofussin Pigmenti
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KALKAN, Erdal, AKHAN, Galip, KALKAN, S.serpil, MALAS, M.ali, and DAĞTEKİN, Ahmet
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SüleymanDemirel Üniversitesi TIP FAKÜLTESİ DERGİSİ: 1996 Mart; 3(1) İnsan İntervertebral Disk Materyalinde Lipofussin Pigmenti Erdal Kalkan Galip Akhan S. Serpil Kalkan M. Ali Malas Ahmet Dağtekin Özet Yaşlılık pigmenti, olarak bilinen tipofussin, ilk kez 1842'de tanımlanmış, 1922'de Borst tarafından isimlendirilmiştir. Endojen bir pigment olan tipofussin, yaşla birUkte karaciğer, kalp, adrenal bezler ve teslislerde giderek artan miktarlarda gözlenmiştir. Bu çalışmada 1992-1995 yılları arasında Konya Devlet Hastanesi ve Süleyman Demirel Üniversitesi Tıp Fakültesi Nöroşirurji kliniklerinde lomber disk hernisi tanısı ile öpere edilen 103 hastadan alınan 112 İntervertebral disk materyalinde AFIP yöntemi ile Kpofussin pigmentinin varlığı araştırıldı. 10-29 yaş grubundaki hastalarda tipofussin pigmentine rastlanmazken; 30-39 yaş grubunda % 6, 40-49 yaş grubunda % 24, 50-59 yaş grubunda % 46, 60-69 yaş grubunda % 50 oranında Upofussin pigmenti tesbit edildi.Yaşlılıkla diğer organlarda giderek artan miktarda gözlenen Upofussin pigmenti orta yaş insan İntervertebral disk hernilerinde ortaya çıkarak disk dejenerasyonu hakkında fikir verebilmektedir.' Anahtar Kelimeler: İntervertebral disk, tipofussin pigmenti. AbstractLipofuscin Pigments in Human İntervertebral Dişe MaterialsLipofuscin, known as ihe aging pigment was first describe in 1842 and named hy Borst in 1922. Lipofuscin which is an endogenous pigment has been observed in increasing amounts by aging in Hver, lıeart, adrenal glands and testes. in this study, tipofuscin pigment was investigated by AFIP method in 112 İntervertebral dişe materials of 103 patients operated at Konya State Hospital and Süleyman Demirel University Faculty of Medıcıne Neurosurgery clinics between the years 1992-1995 with the diagnosis of lumbar dişe herttiation. While tfıere was no tipofuscin pigment in patients of 10-29 age group; it was 6% in 30-39 age group, 24% in 40-49 age group, 46% 50-59 age group and 50% 60-69 age group.Lipofuscin pigment may give an opinionon dişe degeneration by reveating in İntervertebral discherniations ofmiddle ages, \vhile it is observed at other organs in increasing amounts by aging. Key Words: Intervertebral dişe, tipofuscin pignıents.
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- 2009
28. Tavşanlarda Kristalize Penisilinle Oluşturulmuş Bir Deneysel Epilepsi Modeli
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Kalkan, Erdal, Akhan, Galip, Koyuncuoğlu, H.Rıfat, Dağtekin, Ahmet, Karaca, Halit, and Kara, N.Nefi
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SüleymanDemirel Üniversitesi TIP FAKÜLTESİ DERGİSİ: 1996 Mart; 3(1) Tavşanlarda Kristalize Penisilinle Oluşturulmuş Bir Deneysel Epilepsi Modeli Erdal Kalkan Galip Akhan H. Rifat Koyuncuoğlu Ahmet Dağtekin Halit Karaca N.NefiKararÖzetDeneysel epilepsi modeli oluşturmak için on adet tavşana topikal, 5 adet tavşana intravenöz ve 5 adet tavşana intramusküler kristaUze penisilin verildi. Topikal penisilin verilen tavşanların hepsi, intravenöz verilenlerden ise sadece biri nöbet geçirdi, İntramusküler pemsiUn verilenlerden hiçbirinde nöbet gözlenmedi,Anahtar Kelimeler: Penisilin, epilepsi, tavşan.Abstract Experimental Seizures Induced by Penicillin in RabbitsTopical, intravenous and intramuscular penicillin was used in order to induce experimental seizures in rabbits. Ali of ten rabbits used topical penicillin devoloped seizures. One ofthefive rabbits in which intravenous penicillin \vere used and nane ofthe 5 rabbits intramıtsculer penicillin yvas used devoloped seizure.Key Words: Penicillin, epilepsy, rabbit.
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- 2009
29. Omurga Tüberkülozları
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Kalkan, Erdal, Akhan, Galip, Ünal, Mahmut, Dağtekin, Ahmet, Kara, N.Nefi, and KAYMAZ, Hacı
- Abstract
SüleymanDemirel Üniversitesi TIP FAKÜLTESİ DERGİSİ: 1996 Mart; 3(1) Omurga TüberkülozlarıErdal Kalkan Galip Akhan Mahmut Ünal Ahmet Dağtekin N. Nefi Kara Hacı Kaymaz ÖzetEğirdir Kemik Hastalıkları Hastanesi'ne ülkemizin her tarafından kemik hastalığı nedeniyle başvurular olmaktadır. 1981-1995 yıllan arasında klinik ve radyolojik olarak Omurga Tüberkülozu (Pott Hastalığı) tanısı ile tedavi edilen 275 hastadan dosyaları yeterli olan 182 hasta retrospektif olarak analiz edildi. Olgular, yaş gruplarına, cinsiyetlerine, başvuru semptomlarına, hastanede kalış sürelerine, muayene, laboratuar, radyolojik bulgularına, tedavi modalitelerine ve başvurduğu bölgelere göre incelendi. Sonuçları literatür ışığında tartışılarak, sorunun sosyo-kültürel düzeyle ilişkisi irdelendi.Anahtar Kelimeler:Omurga tüberkülozu, kemoterapi, cerrahi tedavi. Abstract Spine TuberculosisEğirdir Bone Disease Hospital is a center of bone tuberculosis gathering patients from ali around Turkey. 275 patients ~with spine tuberculosis (Pott's disease) were investigated retrospectively. 182 patiens had sufficient records and they were analyzed in respect to age, sex, symptoms, duration of hospitaBzation, examination and laboratory signs, treatment modaUties and their geographic localizations. Results are discussed vvith literatüre and socialfactors. Key Words: Spine tuberculosis, chemotherapy, aurgical treatment.
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- 2009
30. İnsan İntervertebral Diskinin Yapı ve Fonksiyonları
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Kalkan, Erdal, Malas, M. Ali, Kalkan, S. Serpil, Kaya, Nuri, Kaymaz, Hacı, and Dağtekin, Ahmet
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SüleymanDemirel Üniversitesi TIP FAKÜLTESİ DERGİSİ: Eylül 1995; 2(3) İnsan İntervertebral Diskinin Yapı ve Fonksiyonları Erdal Kalkan M. Ali Malas S. Serpil Kalkan Nuri Kaya Hacı Kaymaz Ahmet Dağtekin ÖzetBu derlemede insan İntervertebral diskinin kısaca gelişme, beslenme ve innervasyomtndan bahsedildikten sonra; nukleus pulposus, annulus jibrosus ve kartilaj son plak gibi diski oluşturan yapılar detaylı olarak incelenmiştir. İntervertebral diskin yapısal elemanları, hidrostatik özellikleri, fonksiyonel ilişkileri ve mekanik davranışları gözden geçirilmiştir. Anahtar Kelimeler: İnsan İntervertebral diski, nukleus pulposus, annulus Jibrosus, kartilaj son plak. Abstract Structure and Functions of Hııman İntervertebral Dişein this paper, after mentioned shortly about development, feeding and innervation of human İntervertebral dişe, structures like nucleus pulposus, annulus fibrosus and cartilage end plate which forrnated dişe \vere revievoed in detail. Structural elements of İntervertebral dişe, hidrostatic features, junctional relations and mechanical attitudes \vere looked över. Key Words: Human İntervertebral dişe, nucleus pulposus, annulus fibrosus, cartilage end plate.
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- 2009
31. Intracranial Cavernomas (Case Report)
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Kalkan, Erdal, Akhan, Galip, Koyuncuoğlu, Hasan R., Aydın, Gülsen, Kaymaz, Hacı, Sarı, Aliye, and Dağtekin, Ahmet
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Cavernoma ,Kavernöz hemanjioma ,Cavernous hemanjioma ,Konjenital vasküler malformasyon ,Kavernoma ,Congenital vascular malformation - Abstract
SüleymanDemirel Üniversitesi TIP FAKÜLTESİ DERGİSİ: 1995 Aralık; 2(4) İntrakranial Kavernomalar (Olgu Sunumu) Erdal Kalkan Galip Akhan Hasan R. Koyuncuoğlu Gülsen Aydın Hacı Kaymaz Aliye SarıAhmet Dağtekin ÖzetSantral sinir sisteminin oldukça nadir görülen konjenital vaskülcr malformasyonlar grubundan olan kavernomalar; epileptik nöbet yakınması ile başvuran ve cerrahi olarak tedavi edilen bir olgu nedeniyle literatür ışığında gözden geçirildi.Anahtar Kelimeler: Kavernoma, kavernöz hemanjiorna, konjenital vasküler malformasyon. Abstract Intracranial Cavernomas (Case Report)in this article we prcsented a patient \vith a congenital cavernoma which was a rare congenital vascular rnalfornıation. Patient suffering from epileptic seizures have been operated. Key Words: Cavernoma, cavernous hemangiotna, congenital vascular rnalfornıation.
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- 2009
32. Deneysel olarak kafa travması oluşturulmuş tavşanlarda melatoninin lipid peroksidasyonu ve antioksidan sistemler üzerine etkisi
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Dağtekin, Ahmet, Kerman, Memduh, and Nöroşirürji Anabilim Dalı
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Neurosurgery ,Nöroşirürji - Abstract
71 ÖZET Oksijenden meydana gelen serbest radikaller, hücre hasan ve ölümünde oldukça önemli mediatörlerdir. Son zamanlarda yapılan çalışmalarda prooksidanlar ve antioksidan savunma sistemleri arasında dengesizlik sonucu ortaya çıkan oksidatif stresin çeşitli dokularda antioksidan enzim aktivitesinde bir artmaya yol açtığı gözlenmiştir. Travmatik beyin yaralanmalarının fizyopatolojisinin aydmlatılmasında bu SOR bağımlı oksidatif stresin oldukça önemi vardır. Melatonin pineal bezden salgılanarak kan dolaşımına verilen potent ve etkili bir endojen serbest radikal gidericidir. Bu çalışmada deneysel olarak kafa travması oluşturulmuş tavşanlarda melatoninin antioksidan sistemler ve lipid peroksidasyonu üzerine etkisi araştırıldı. Sonuç olarak kafa travması deneklerde bir oksidan mücadeleye yol açarken farmakolojik dozlarda uygulanan melatoninin, lipid peroksidasyonunda anlamlı bir azalma oluşturduğu ve antioksidan savunma sistemlerini önemli ölçüde desteklediği gözlenmiştir. 72 SUMMARY The Effects of Melatonin on Lipid Peroxidation and the Antioxidant Defense System in Experimental Brain Injury. Oxygen-derived free radicals are very important mediators of cell injury and death. Current evidence indicates mat, oxidative stress, which is known to arise as the result of the imbalance between prooksidant production and antioxidant defense, is associated with an elevation in antioksidative enzyme activity in various tissues. Free radicals play an important role injuries of the central nervous system. Melatonin which is released to blood circulation from pineal gland is a potent and effective endogen free radical scavenger. The effects of melatonin on lipid peroxidation and the antioxidant defense system were investigated in experimental brain injury. Our results indicate that brain injury as a model of oxidative stress, is an oxidant challenge in rabbits and so also exogenous melatonin has a protective effect against oxygen free radical mediated lipid peroxidation. 379
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- 2001
33. The effects of fibroblast growth factor-2 and pluripotent astrocytic stem cells on cognitive function in a rat model of neonatal hypoxic-ischemic brain injury.
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Çelik, Yalçın, Atıcı, Aytuğ, Beydağı, Hüseyin, Reşitoğlu, Bora, Yılmaz, Necat, Ün, İsmail, Polat, Ayşe, Bağdatoğlu, Celal, Dağtekin, Ahmet, Sungur, Mehmet Ali, and Tiftik, Nalan
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PLURIPOTENT stem cells ,FIBROBLAST growth factor 2 ,COGNITIVE ability ,NEONATAL diseases ,BRAIN injuries ,BIRTH injuries ,NEURAL physiology ,STEM cells ,ANIMAL experimentation ,ANIMAL populations ,BIOLOGICAL models ,BRAIN ,CELLS ,COGNITION ,GROWTH factors ,LEARNING ,MEMORY ,NEURONS ,RATS ,CEREBRAL anoxia-ischemia ,THERAPEUTICS ,PHYSIOLOGY - Abstract
Objective: This study aimed to determine the effect of pluripotent astrocytic stem cells (PASCs) and fibroblast growth factor-2 (FGF-2) on cognitive function in neonatal rats with hypoxic-ischemic brain injury (HIBI).Methods: The study was performed on 7-d-old rats that were randomly divided into four groups. All rats, except those in the sham group, were kept in a hypoxic chamber containing 8% oxygen for 2 h after the ligation of the right carotid artery. Next, 5 d after HIBI was induced, PASCs were administered to the motor cortex, and FGF-2 was administered intraperitoneally to group AF; PASCs were administered to the motor cortex, and salt solution buffered with phosphate was administered intraperitoneally to group A; and fresh cell culture solution (medium) was administered to group M. Immunofluorescence was used to localize the administered PASCs in the brains of rats from groups A and AF. The Morris water maze tank (MWM) test was performed to assess the rats' cognitive functions at week 12. The rats that were administered PASCs were observed for the development of neoplasms and autopsies were performed after 30 months.Results: PASCs migrated to damaged brain regions surrounding the hippocampus in groups A and AF. The mean platform finding time (PFT) significantly decreased over time in each group on day 1-4 of MWM testing (p < 0.001). On day 2-4, the mean PFT was shortest in group S followed by group AF. In group A, the PFT was significantly longer than in group S on day 3-4 (p = 0.01 and 0.007, respectively). On day 5 of the MWM test, the time spent in the eastern quadrant (which previously contained the platform) was longest in group S followed by groups AF, A, and M; however, the differences between groups were not significant (p = 0.51). After 30 months, none of the rats in groups A or AF had benign or malignant neoplasms.Conclusions: Following the administration of PASCs in rats with experimentally induced HIBI, PASCs migrated to the injured brain regions; however, treatment with PASCs did not have a positive effect on cognitive function. The administration of FGF-2 together with PASCs resulted in positive cognitive results, although not at the level of significance. [ABSTRACT FROM AUTHOR]- Published
- 2016
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34. Rat beyin mast hücreleri: Cinsiyetler ve hemisferler arasındaki sayısal farkları ve lokalizasyonları
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Kalkan, Erdal, Demiralay, Halit, Akhan, Galip, Kalkan, S. Serpil, and Dağtekin, Ahmet
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Beyin mast hücreleri ,Sex differences ,Cinsiyet farklılığı ,Right-left hemisphere asymmetry ,Sağ-sol hemisfer asimetrisi ,Brain mast cells - Abstract
Anaflaksi, enflamatuar reaksiyon ve gecikmiş tip aşırı duyarlılıktaki rolleri kanıtlanmış olan mast hücrelerinin beyin dokusundaki fonksiyonları, lokalizasyonları, fizyolojik ve patolojik olaylardaki rolleri giderek daha fazla araştırılmaktadır. Bu çalışmada, eter anestezisi uygulanan ratlarda, mast hücrelerinin beyin hemisferleri ve cinsiyetler arasındaki sayısal farkları ile lokalizasyonlarının incelenmesi amaçlandı. 10 erkek, 10 dişi, 20 adet albino rat eter anestezisi ile uyutulduktan sonra beyinleri disseke edilerek, sağ ve sol hemisferlerine ayrıldı. %10’luk formalinle fikse edilerek her bloktan eşit aralıklarla 3µ m kalınlığında 5’er kesit alındı ve Toluidin-Blue ile boyandı. Preparatların tüm sahaları incelenip mast hücreleri sayıldı ve istatiksel analizleri yapıldı. Mast hücre sayılarında sağ ve sol hemisferler ile dişi ve erkek rat beyinleri arasında istatistiksel olarak belirgin bir fark olmadığı tespit edildi. Mast hücrelerinin genelde meninkslerde ve meninkslere yakın gri cevherde perivasküler olarak yerleşmiş olduğu görüldü. Mast ceils which were established acts in anaphylaxis and inflammatory reactions, have been recently interested in functions, localization's, physiological and pathological ads :n brain tissue, in this study we aimed to search whether there were any difference of mast cells in some parameters between hemispheres and sexes such as distributions and amount in rats. 10 male and 10 female, total 20 albino rats following anesthesied by ether were decehuted and removed brain divided left and right hemispheres. Materials were fixed by %10 formaline and cut in 5 equal slide and colored by tonidin-Blue. Mast ceils were counted in ever; side. Mast cells in both hemispheres and both sexes were analyzed by student t test. There were any statical important differences between right and left hemispheres and sexes. Mast cells were seen in perivasculer area in the me?iingia and the cortex near the meningia
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- 1995
35. Intraoperative supratentorial epidural haematoma during removal of a huge posterior fossa dermoid cyst
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Avci, Emel, Dagtekin, Ahmet, Baysal, Zeynep, and Karabag, Hamza
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- 2010
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36. OPTİK STRUT MORFOMETRİSİ: RADYOANATOMİK ÇALIŞMA.
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ÖZALP, Hakan, TEN, Barış, BEGER, Orhan, TAGHİPOUR, Pourya, ÇAKIR, Salim, ÖZDEMİR, Deniz Ladin, MÜDÜROĞLU, Fatma, HAMZAOĞLU, Vural, DAĞTEKİN, Ahmet, and TALAS, Derya Ümit
- Abstract
Objective In this radioanatomical study, we aimed to obtain data on the morphometric properties of the optic strut as it is an important reference point for optic nerve surgery. Material and Methods Seven adult human dry skulls, present in the inventory of Faculty of Medicine Department of Anatomy were included in this study. Direct anatomical measurements were obtained with a digital caliper and radiological measurements with computed tomography. The position of the optic strut was evaluated according to the preciasmatic sulcus. Results The length and width of the optic strut were 4.53 ± 0.74 mm and 4.83 ± 1.34 mm in direct anatomic measurements. On computed tomography, the length and width of the optic strut were 4.13 ± 1.27 mm and 4.31 ± 0.82 mm. The distance between the two struts was 16.83 ± 2.56 mm and 15.91 ± 1.81 mm in direct anatomic measurements and computed tomography, respectively. Computed tomography and direct anatomic evaluation revealed that the optic strut was sulcal in 4 dry skulls, postsulcal in 2 dry skulls, and asymmetric in 1 dry skull. Conclusion Considering the fact that optical strut is a landmark for surgeons and may be damaged during anterior clinoid process resection, our numerical data may be useful during surgical applications around the optic nerve. [ABSTRACT FROM AUTHOR]
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- 2020
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37. The Comparison of the Right and Left Sigmoid Sinus Cross-Sectional Areas in Fetal Period and the Factors Affecting the Venous Dominance.
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Özalp, Hakan, Aktekin, Mustafa, Hamzaoğlu, Vural, Vayisoğlu, Yusuf, Karataş, Mehmet Ali, Karşıyaka, Dilan, Uzmansel, Deniz, Bozdoðan Arpacý, Rabia, Cayan, Filiz, Mehmet Eti, Can, Kanık, Arzu, Cem Baskan, Fuat, Cansu Aladağ, Zeynep, Ertaş, Elif, Dağtekin, Ahmet, Avcı, Emel, Bağdatoğlu, Celal, and Ümit Talas, Derya
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CRANIAL sinuses , *SKULL surgery , *SKULL base , *OPERATIVE surgery , *SOCIAL dominance , *ANATOMY - Abstract
OBJECTIVES: Skull base is an important and a challenging area for surgeons. Success in skull base surgery depends on various factors such as pre-operative evaluation, appropriate surgical technique, anesthesia duration, intraoperative neuromonitorization and wound care. MATERIALS and METHODS: This study was performed in the Anatomy dissection laboratory of M.U. Medical Faculty (Ethical committee approval number 2010-103). Twelve fetuses between 17-33 gestational weeks fixed with formaldehyde were enrolled to the study. RESULTS: This study was planned to investigate the cross sectional areas of the sigmoid sinus in three levels to compare the right-left sides and the probable relationship among the levels in fetuses to further delineate the developmental factors on jugular foramen asymmetry. The cross-sectional measurements of sigmoid sinus lumen were done on 3 levels which are described as A1 level; sinodural angle, A2 level; the midpoint between the sinodural angle and endocranial orifice and A3 level as the entrance (endo-cranial orifice) of the jugular foramen. There is a strong positive correlation between left (L) A1 and L A2 and also the same for L A1 and right (R) A2. These strong and positive correlations are all valid between L A2-L A3, L A2-R A2, L A2-R A3, L A3-R A3, R A1-R A2. CONCLUSION: Multicenter studies would be beneficial to investigate the topic with greater number of fetuses also on the different regions for genetic differences. [ABSTRACT FROM AUTHOR]
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- 2019
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38. Morphometric Assessment of the Carotid Foramen for Lateral Surgical Approach.
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Özalp, Hakan, Beger, Orhan, Erdoğan, Osman, Koç, Turan, Kayan, Gülden, Hamzaoğlu, Vural, Kara, Engin, Vayisoğlu, Yusuf, Dağtekin, Ahmet, Öztürk, Ahmet Hakan, and Talas, Derya Ümit
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SKULL base , *CRANIOMETRY , *IMAGE analysis software , *DIGITAL images , *COMPUTED tomography , *SKULL surgery - Abstract
OBJECTIVES: This study aimed to compare the right and left sides of the carotid foramen (CF) to determine its precise location according to certain anatomical landmarks. MATERIALS and METHODS: Twenty human dry skulls were included in the study. A digital caliper and a digital image analysis software were used to obtain direct anatomical numerical values. Then, the same parameters on dry skulls were assessed with computed tomography (CT). RESULTS: CF was found to be round shaped (62.5%), oval shaped (32.5%), and tear-drop shaped (5%). In all cases, the position of CF was seen as just postero-laterally of the foramen lacerum. According to the jugular foramen, CF was seen to be anterior in 85% and antero-medial in 15% of the cases. Regarding the morphometric values of the surface area, the length and width of CF were observed to be 37.86±11.24 mm2, 8.02±1.09 mm, and 6.86±0.90 mm at direct anatomical measurements and 39.69±10.07 mm2, 7.89±1.14 mm, and 6.41±0.90 mm at CT, respectively. The angles between the supramastoid crest-CF-zygoma root and the supramastoid crest-CF-mastoid process were determined as 37.11±6.87° and 42.22±6.40° at direct anatomical measurements and 36.59±4.94° and 43.71±4.55° at CT, respectively. CONCLUSION: A significant difference in sides was not observed in relation with the numerical data of CF obtained from CT or from direct anatomical measurements of dry skulls. Moreover, a significant difference was not found between radiological and direct anatomical measurements. Therefore, precise radiological assessment of this region by an experienced neuroradiologist may be assumed as a fundamental need for successful surgeries of the skull base, in addition to thorough anatomical knowledge of neurootologists and neurosurgeons. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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39. The Predictability Precision of Superior Semicircular Canal Through Radiological Assessment and Microanatomical Dissection.
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Kara, Engin, Öztürk, Kübra, Oktay, Ezgi, Hamzaoğlu, Vural, Uzmansel, Deniz, Vayisoğlu, Yusuf, Özalp, Hakan, Farsak, Mehmet, Aladağ, Zeynep Cansu, Pütürgeli, Tuğçe, Eti, Can Mehmet, Dağtekin, Ahmet, Türkegün, Merve, and Talas, Derya Ümit
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TREATMENT effectiveness , *SYSTEMIC scleroderma , *THERAPEUTICS - Abstract
OBJECTIVE: There is still ongoing research on the relationship of arcuate eminence (AE) and superior semicircular canal (SSC). We aimed to evaluate the precision of predictability of SSC through the morphology of AE via radiological means. MATERIALS and METHODS: This investigation is performed on 12 dry skulls belonging to Mersin University Medical Faculty department of anatomy. Computed tomography (CT) assessment is performed with 0.5-mm-thin sections temporal bone algorithm on dry skulls which were marked with fixated copper wire by scotch tapes on the most prominent part of the middle fossa floor assuming the location of AE. The data are reformatted on the workstation with vitrea 2.0. The distances of the determined three points including lateral (A), apical (B), and medial (C) of the SSC and the copper wire are measured radiologically. Also, the height between the most apical part of the SSC to the floor of the skullbase (H) is measured. The angles between the placed copper wires and the SSC (E) are calculated. The angle between SSC and the midpoint of the IAC (F) and SSC to the sulcus of the greater GSPN (G) were measured. The nearest distance was measured between the most posterior part of the SSC and the point marked by the perpendicular line drawn from the medial border of the petrous bone to the most posterior part of the internal auditory canal (IAC) (D). RESULTS: The right and left A, B, and C distances are 2.54+/- 2.75, 3.67+/-3.16, 5.85+/-3.77; 2.92+/-2.24, 3.68+/-2.93, 6.09+/-3.40, respectively. We could not find any statistical significance when the right A, B, and C distances were compared with the left values. Examination of the values revealed that C distance is greater than the A distance of the same side both for right (p=0.040) and left (p=0.022) measurements. The calculated left and right E angles are 30.313+/-12.838, and 35.558+/-18.437 degrees, respectively. Statistical significance was not found between the right and left angles. The right and left F, G angles were 53.17, 47.25; 93.58, 100.92 degrees; and D distances are 8.01, 8.13 millimeters, respectively. Statistical significance was not found when right and left E, F, G angles and D distances were compared. Among 12 left and 12 right sides, the copper wire was found to be nearly overlapping to SSC in two in the right and only one in the left. CONCLUSION: This study reveals that there is a great variability predicting the exact location of SSC through the prominence of AE. Complementary studies are needed with greater number of dry skulls and cadavers. Comparison of different hypothesis including the effect of temporal lobe sulcus is to be discussed to better enlighten the exact relationship of the aforementioned anatomical structures. [ABSTRACT FROM AUTHOR]
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- 2018
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40. The effects of different recovery methods on anaerobic performance in combat sports athletes
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Ahmet Dağtekin, Hüseyin Eroğlu, Yunus Saçan, Ümit Gök, Hakan Yarar, BAİBÜ, Spor Bilimleri Fakültesi, Antrenörlük Eğitimi Bölümü, and Dağtekin, Ahmet
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Cold Water Immersion ,Rating of perceived exertion ,Anaerobic Power ,medicine.medical_specialty ,biology ,Passive Recovery ,Athletes ,business.industry ,Repeated measures design ,Physical Therapy, Sports Therapy and Rehabilitation ,biology.organism_classification ,Crossover study ,Recovery method ,Active Recovery ,Physical therapy ,medicine ,Physical Performance ,Analysis of variance ,business ,Exercise ,Anaerobic exercise ,Wingate test - Abstract
Background: Athletes, who engage in combat sports, perform often several matches in a day during competitions. For this reason, recovery is a very important factor between matches. There are many different recovery methods applied by athletes and it is very important to know which one is more suitable for anaerobic performance. Objective: The aim of this study was to investigate the effects of different recovery methods on anaerobic performance in combat sports athletes. Methods: Thirteen experienced international level elite combat sports athletes (age 20.5 +/- 1.6 years, body height 175.3 +/- 4.5 cm, body mass 73.8 +/- 7.9 kg, body fat 11.4 +/- 3.9%, training experience 7.5 +/- 3.4 years) have participated voluntarily in this study. Athletes were involved in passive recovery (PR), cold water immersion (CWI) and active recovery (AR) methods after countermovement jump and Wingate anaerobic test. Also, body temperature and rating of perceived exertion were evaluated. In this study, a randomized crossover design was used and applications lasted three days. All measurements were performed at three different times (baseline, 1st and 2nd session) in a day. Two-way analysis of variance with repeated measures was used for statistical analysis. Results: For the countermovement jump there was a significant increase after CWI and AR. A significant decrease was found in the Fatigue index after CWI recovery. Body temperature was increased after CWI, AR, and PR. Rating of perceived exertion has increased in AR. Moreover, there were no significant differences were found in peak power and mean power. Conclusions: The results indicate that during intermittent recovery, CWI positively impacted countermovement jump and fatigue index. Also, AR has positively affected countermovement jump performance, while negatively affected the rating of perceived exertion. Thus our findings suggest that 10 min of CWI and AR can be adopted in competitions when successive matches take place
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- 2021
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41. The Effects of Methylprednisolone and Vitamin A on the Healing of Traumatic Peripheral Nerve Paralysis.
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Sevuk, Levent, Vayisoğlu, Yusuf, Korlu, Savaş, Çömelekoğlu, Ülkü, Arpacı, Rabia Bozdoğan, Aktaş, Savaş, Helvacı, İlter, Ayaz, Lokman, Dağtekin, Ahmet, Göçer, Perihan, Aladağ, Zeynep Cansu, Karataş, Mehmet Ali, and Talat, Derya Ümit
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METHYLPREDNISOLONE , *THERAPEUTIC use of vitamin A , *PERIPHERAL nerve injuries , *DRUG efficacy , *ELECTROPHYSIOLOGY , *THERAPEUTICS - Abstract
OBJECTIVE: This study planned to evaluate the effects of vitamin A (VA) and steroid treatment on nerve healing. Study design: we investigated electrophysiological, electron microscopic (EM), immunohistochemical, and biochemical findings in rat sciatic nerve model. MATERIALS and METHODS: In total, 112 female rats were divided into 16 groups, each consisting of 7 animals. Subjects were evaluated according to compound muscle action potential (CMAP) findings, ultrastructural staging of myelinated axons with EM, nitric oxide (NO) and malondialdehyde (MDA) findings in serum and tissue, and immunohistochemical findings in the first week and first month. RESULTS: NO and MDA levels in serum and tissue were found to be statistically lower after high-dose methylprednisolone (MP), normal-dose MP, high-dose MP+VA, normal-dose, and MP+VA treatment modalities compared to controls (p<0.05). The most similar EM findings compared to control animals were seen in the normal-dose MP and high-dose MP+VA treatment groups. The best amplitude values were seen in the high-dose MP and continuous normal-dose MP therapy groups in the first month. In the normal-dose MP and high-dose MP+VA treatment groups, intense staining was found compared to the control and sham groups according to the sciatic nerve immunohistochemical examination. CONCLUSION: This study revealed noticeable VA effects on the inflammatory process during the healing of traumatic nerve paralysis by electron microscopy and immunohistochemistry. However, similar findings were not established by electrophysiology. Therefore, more experimental studies are needed to further investigate the efficacy and the mechanism of action of VA on steroid administration and the inflammatory process. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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42. Alt torakal ve üst lomber vertebra pediküllerinde bilgisayarlı tomografi ile yapılan morfometrik ölçümler
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Araz, Necmettin, Dağtekin, Ahmet, and Beyin ve Sinir Cerrahisi Anabilim Dalı
- Subjects
Lumbar vertebrae ,Morphometry ,Neurosurgery ,Pediculus ,Nöroşirürji ,Thorax ,Tomography-x ray-computed ,Thoracic vertebrae - Abstract
Alt torakal ve üst lomber vertebra pediküllerinde bilgisayarlı tomografi ile yapılan morfometrik ölçümlerin değerlendirildiği çalışmamıza Ocak 2011 ile Haziran 2013 tarihleri arasında Mersin Üniversitesi Sağlık Araştırma ve Uygulama Merkezi Hastanesi polikliniklerine başvuran ve radyolojik olarak T9 ile L2 arasındaki vertebralarda morfolojik olarak tam ölçüm yapılabilecek toplam 100 olgu dahil edilmiştir. Olguların 54'ü erkek, 46'sı kadın olup yaşları 20-80 arasında değişmektedir. Olgularda her iki pedikül kalınlıkları, pedikül yükseklikleri, transvers ve sagittal pedikül açıları, interpediküler mesafe, spinal kanal transvers ve sagittal çapları ile ilgili parametreler bilgisayarlı tomografi görüntülerinde üç boyutlu rekonstrüksiyon işlemi gerçekleştirildikten sonra dijital olarak ölçüldü.T9 ile L2 vertebra arasında her iki cinste pedikül kalınlığının en fazla sol L2 vertebra pedikülünde olduğu gözlendi. Sol L2 vertebra pedikül kalınlığı erkeklerde 6.934±0.632 mm, kadınlarda ise 6.899±0.572 mm olarak saptandı. Her iki cinste de pedikül kalınlığının en az T9 vertebra pedikülünde olduğu tespit edildi. Sol T9 vertebra pedikül kalınlığı erkeklerde 5.545±0.488 mm, sağ T9 vertebra pedikül kalınlığı kadınlarda 5.441±0.475 mm olarak ölçüldü. Transvers pedikül açısı en geniş olarak sağ T9 düzeyinde saptamış olup açı 11.374±0.572 derece olarak ölçüldü. Solda T9 vertebra düzeyinden T12 vertebra düzeyine kadar transvers pediküler açılarının azaldığı, aynı azalmanın sağda ise T11 düzeyine kadar devam ettiği belirlendi. Sagittal pedikül açısı en geniş T10 düzeyinde ölçülmüş olup açı 16.727±1.303 derecedir.Bu çalışmada; erişkin yaş grubundaki popülasyonda alt torakal ve üst lomber vertebralarda pedikül kalınlık, yükseklik ve açıları bilgisayarlı tomografi ile ölçülerek, torakolomber bileşke cerrahisinde oldukça sık uygulanan cerrahi bir yaklaşım olan transpediküler vida fiksasyonu tekniğinde kullanılacak pedikül vidasının uygun çap ve boyda seçimi ile perioperatif dönemde oluşabilecek komplikasyonların önüne geçilmesini sağlayacak parametreler ortaya konmaya çalışılmıştır.Anahtar Kelimeler: Bilgisayarlı tomografi, lomber, morfometrik ölçüm, pedikül, torakal One hundred patients who visited Mersin University Faculty of Medicine Hospital clinics between January 2011 and June 2013 who were adequate for radiological measurement of between T9 and L2 spines were enrolled to this study. 54 of the patients were men and 46 of the patients were women total age was between 20 and 80. After the three dimensional reconstruction on computer tomography the parameters such as pedicle width, height, transverse and sagittal angles of the pedicles, interpedicular distance, transverse and sagittal diameter of spinal canal were measured digitally.The most pedicle width was determined in the left L2 vertebrae in both gender between T9 and L2. The width of left L2 was found 6.934±0.632 mm in men and 6.899±0.572 mm in women. The pedicle width was at least in T9 vertebrae in both gender. The left T9 vertebrae pedicle width was 5.545±0.488 mm in men and right T9 vertebrae pedicle width was 5.441±0.475 mm in women. The transverse pedicul angle was 11.374±0.572 degree as the widest measurment. The transverse pedicul angle was decreasing from T9 to T12 vertebrae level on the left side, this decrease has been found to be continuing until T11 level on the right side. The sagittal pedicle angle was 16.727±1.303 degree as the widest value at T10 level.In this study the lower thoracal and upper lumbar vertebrae pedicle diameters were measured by computer tomography in adults. Prevention of the complications perioperatively and the prediction of the appropriate screw diameter and length selection preoperatively for the patients who has been planned transpedicular screw fixation that is used in thoracolumbar joint surgery is aimed.Key Words: Computer tomography, lumbar, morphometrical measurement, pedicle, thoracal 70
- Published
- 2014
43. Lomber instabilite ve lomber spondilolistezis olgularında posterior stabilizasyon ile füzyon uygulamalarının ağrı, disabilite ve yaşam kalitesi üzerine etkisi
- Author
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Varyemez, Mehmet Tamer, Dağtekin, Ahmet, and Beyin ve Sinir Cerrahisi Anabilim Dalı
- Subjects
Lumbar vertebrae ,Quality of life ,Back pain ,Neurosurgery ,Pain ,Nöroşirürji ,Spondylolisthesis ,Fusion ,Stabilization - Abstract
Uzun süre devam etmesi durumunda hastaların yaşam kalitesinde bozulmalara yol açarak depresyon ya da anksiyete bozukluğuna neden olabilen bel ağrısı tedavi edilmesi gereken ciddi bir tablodur. Lomber instabilite ve spondilolistezis bel ağrısının sık karşılaşılan nedenleri arasında yer almaktadır.Konservatif tedavilere yanıt vermeyen bel ağrısı ve/veya nörolojik defisit olan spondilolistezis ve lomber instabilite olgularında posterior dekompresyon, stabilizasyon ve posterolateral füzyon etkin bir tedavi yöntemidir. Bu yöntem ile tedavi edilen olgularımızın ağrı şiddetleri belirgin olarak azalmış ve yaşam kalitelerinde belirgin düzelme gözlenmiştir. Low back pain is a serious illness which must be treated because of its affects on the life quailty of the patients. Thus, It can be the reason of the depression and anxiety. Lumbar instability and spondylolisthesis are accepted as frequent reasons of the low back pain. Low back pain is a serious illness which must be treated because of its affects on the life quailty of the patients. Thus, It can be the reason of the depression and anxiety. Lumbar instability and spondylolisthesis are accepted as frequent reasons of the low back pain. 104
- Published
- 2010
44. Clinical and Surgical Results of Treatment Modalities in Orbital Roof Fractures: Single-Center Experience.
- Author
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Tekeli Barut I, Karataş D, Uygur S, Yildirim Y, Doruk E, Dağtekin A, and Avci E
- Abstract
Orbital roof fractures are uncommon craniofacial fractures. Due to the location of the fracture and the mechanism of trauma, it is often associated with neuroophthalmological injuries. The authors aimed to evaluate the results of conservative and surgical treatments of patients with orbital roof fractures and present our clinical experiences regarding optimal treatment planning, especially in cases of moderate or severe head trauma. The authors retrospectively identified 145 patients who were treated for orbital roof fractures. Three colored silicone-injected cadaver samples and a dry skull were used to show the panoramic view of the anatomy of the orbital region. In this study, orbital roof fractures were classified under 4 types. The most common fracture type was type 1 (42%). Intracranial hemorrhage was observed in 60% of all cases and was most common in type 3 fractures (68%). Neuro-ophthalmological deficits were detected in 16% of all patients and were most common in Type 4 fractures (47%). Third cranial nerve deficit was the most common deficit (39%). Neuroophthalmological deficits were detected in 9.5 % of patients with mild head trauma and 32.5% in patients with moderate or severe head trauma. Moderate or severe head trauma was detected in 28% of the cases. Moderate or severe head trauma makes it difficult to detect neuro-ophthalmological complications, which are critical in determining the need for acute surgery. In patients with moderate or severe brain injury, treatment should be individualized according to the nature of the displacement and the relationship between concomitant fractures and intracranial hemorrhage., Competing Interests: The authors report no conflicts of interest., (Copyright © 2024 by Mutaz B. Habal, MD.)
- Published
- 2024
- Full Text
- View/download PDF
45. Treatment Response to Acute Total Ophthalmoplegia in Primary Pituitary Lymphoma: A Case Report and Review of the Literature.
- Author
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Uygur S, Karataş D, Arslan G, Dağtekin A, and Avcı E
- Abstract
Primary pituitary lymphoma (PPL) is an extremely rare localized lymphoma without systemic involvement. The most common clinical presentations of PPL are hypopituitarism, headaches, and ophthalmoplegia. Diagnosing PPL without a biopsy is almost impossible. There is no study that has specifically investigated and reviewed treatment responses to the ophthalmological symptoms of PPL patients. Herein, we present a 66-year-old female patient who had acute-onset total ophthalmoplegia and headache as admission symptoms, which was diagnosed as PPL after subtotal resection. In the present study, we discussed the response of ophthalmological symptoms to treatment with a review of the literature. Only 18 reported cases had postoperative ophthalmological examination, and in 94.4% of these cases, ophthalmoplegia resolves after surgery and chemotherapy. The complete resection rate of the PPL in the literature was found to be as low as 12.3% in this region because of the hard and adhesive nature of the tumor. Our review unveiled that complete recovery of ophthalmoplegia can be achieved even in the late phase of the symptoms. In the present case, ophthalmoplegia resolved completely following subtotal resection and rituximab, high-dose methotrexate, and cytarabine treatment., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2024, Uygur et al.)
- Published
- 2024
- Full Text
- View/download PDF
46. The importance of macroprolactinemia in the differential diagnosis of hyperprolactinemic patients.
- Author
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Bağdatoğlu C, Bağdatoğlu OT, Muslu N, Köseoğlu A, Dağtekin A, Polat G, Dolgun H, and Karataş MA
- Subjects
- Adult, Child, Preschool, Chromatography, Gel, Diagnosis, Differential, Female, Humans, Hyperprolactinemia etiology, Male, Middle Aged, Pituitary Neoplasms blood, Polyethylene Glycols, Prolactin blood, Prolactinoma blood, Solvents, Young Adult, Hyperprolactinemia diagnosis, Pituitary Neoplasms diagnosis, Prolactinoma diagnosis
- Abstract
Objective: Hypersecretion of prolactin (PRL) by lactotroph cells of the anterior pituitary may lead to hyperprolactinemia in physiological or pathological conditions. However, some of the patients may present with another cause of hyperprolactinemia, described by various authors as macroprolactinemia., Patients and Methods: The clinical, radiological and biochemical assessment of 124 patients were carefully evaluated for differential diagnosis in light of the literature. Macroprolactinemia was assessed by the polyethylene glycol (PEG) method in all of the patients, with high PRL level but without significant symptomatology, presenting to our clinic between 2004 and 2006., Results: The sera from 124 patients with hyperprolactinemia were screened for macroprolactinemia using the PEG method and macroprolactinemia was detected in 10 patients (8%). The average age of the patients was 35 years (range 23-46). Nine of the ten patients were female (90%) and one was male (10%). All of the patients had MRI. An intrasellar mass and stalk lipoma were found in three of the ten patients (30%)., Conclusions: In conclusion, macroprolactinemia should be taken into consideration as a probable cause of high serum prolactin levels to avoid repeated hormone assessments, neuroradiological examinations and unnecessary medical and surgical treatments.
- Published
- 2008
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