Yıl: 2009 Cilt: 41 Sayı: 3 Sayfa Aralığı: 169 - 174 Metin Dili: Türkçe İndeks Tarihi: 29-07-2022

Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study

Öz:
Amaç: Omurilik zedelenmesi, omuriliğin hasar gördüğü kazalar arasında yaygın bir travmadır. Damar içi metilprednizolon ve hipotermi, travmatik omurilik zedelenmesi tedavisinde yaygın olarak kullanılır. Ancak; omurilik zedelenmelerinin sebep olduğu özürlülüğü azaltan ve önleyen terapötik yaklaşımların üzerinde ortak bir uzlaşıya varılamamıştır. Bu çalışmada; tavşanlarda dinamik ağırlığı azaltma yöntemiyle yapılan deneysel omurilik zedelenmesinden sonra metilprednizolon ve hipotermi tedavilerinin etkinliği araştırılmıştır. Gereç ve Yöntem: Bu deney; yaralı grup, metilprednizolon ile tedavi edilmiş grup ve hipotermi ile tedavi edilmiş grup olmak üzere 3 gruptan oluşmuştur. Metilprednizolon ile tedavi edilmiş gruba, omurilik zedelenmesinden hemen sonra, üç gün boyunca damar içi metilprednizolon (30 mg/kg/gün) verilmiştir. Hipotermi ile tedavi edilmiş grup da, soğuk izotonik tuz çözeltisi (5ºC), 10 ml/dk 'lik bir oranda kanula yoluyla epidural bölgeye enjekte edilmiştir. Doku ısısının 25ºC ulaşmasına müsade edildi ve daha sonra izotonik tuz solüsyonu, üç saat boyunca 5 ml/dk ‘lik bir oranda verildi. Tuz çözeltisi, omurilik zedelenmesi olan yaralı gruba verildi. Deneysel zedelenmeden bir hafta sonra, omurilikten, histopatalojik değerlendirme ve sonrasındaki stereolojik analizler için orta torakal seviyedeki doku alındı.Bulgular: Sadece gri ve ak cevherin parankimasının değil aynı zamanda kavitenin de bulunduğu omurilik segmentinin hacmi, Cavalieri Prensibi ile hesaplanmıştır. Beyaz cevherin kavite hacmi, gri cevherin kavite hacmi ve omurilik segmentinin total kavite hacmi yönünden, metilprednizolon/hipotermi ile tedavi edilmiş gruplar ve yaralı grup arasında anlamlı farklılıklar görüldü. Beyaz cevherin kavite hacmi, gri cevherin kavite hacmi ve omurilik segmentinin total kavite hacmi yönünden, metilprednizolon ve hipotermi ile tedavi edilmiş gruplar arasında anlamlı farklılıklar görülmedi.Sonuç: Sonuçlar, hem metilprednizolon hem de hipotermi tedavilerinin, deneysel zedelenmeden sonra omurilik dokusunun, hasarlı dokulardan korunmasında nöroprotektif olduğunu ileri sürmüştür.
Anahtar Kelime:

Konular: Genel ve Dahili Tıp

Deneysel spinal kord hasarı sonrası hipotermi ve metilprednizolon Uygulamasının nöroprotektif etkileri : Histopatolojik ve stereolojik çalışma

Öz:
Objective: Spinal cord injury is a common trauma among severe accidents in which the spinal cord has been severed; intravenous methylprednisolone and hypothermia are widely used in the treatment of traumatic spinal cord injuries. However, no common consensus has been reached on therapeutic approaches to prevent and reduce disability caused by spinal cord injuries. In this study, the efficacy of methylprednisolone and hypothermia treatments after experimental spinal cord injury made by dynamic weight-drop model in rabbits was investigated. Materials and Methods: This experiment consists of three groups: injured, methylprednisolone-treated and hypothermia-treated groups. The methylprednisolone-treated group received intravenous methylprednisolone (30 mg/kg/day) immediately after spinal cord injury for three days. In the hypothermia-treated group, cold isotonic saline (5ºC) was infused via a cannula into the epidural space at a rate of 10 ml/min. The temperature of the tissue was allowed to reach 25ºC, and then isotonic saline solution was given at a rate of 5 ml/min for 3 hours. Saline was given to the injured group following spinal cord injury. After 1 week of experimental injury, mid-thoracic level tissue was removed from the spinal cord for histopathological evaluation and subsequent stereological analysis.Results: The volume of spinal cord segment, not only parenchyma of grey and white matter but also cavity, was estimated by the Cavalieri principle. Significant differences were seen between the injured group and methylprednisolone /hypothermia-treated groups in terms of the total volume cavity of spinal cord segment; cavity volume in the grey matter and cavity volume in the white matter. No significant differences were seen between methylprednisolone and hypothermia-treated groups in terms of the total volume cavity of spinal cord segment; cavity volume in the grey matter and cavity volume in the white matter.Conclusions: These results suggested that both methylprednisolone and hypothermia treatment are neuroprotective in preventing spinal cord tissue from tissue damage after experimental injury.
Anahtar Kelime:

Konular: Genel ve Dahili Tıp
Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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APA ÜNAL B, KAPLAN S, ODACI E, Aslan H, AKSAK KARAMEŞE S, Ünal D, ALTUNKAYNAK B, Gündoğdu C, GÖKYAR A (2009). Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study. , 169 - 174.
Chicago ÜNAL Bünyami,KAPLAN Süleyman,ODACI Ersan,Aslan Hüseyin,AKSAK KARAMEŞE SELİNA,Ünal Deniz,ALTUNKAYNAK B. Zuhal,Gündoğdu Cemal,GÖKYAR AHMET Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study. (2009): 169 - 174.
MLA ÜNAL Bünyami,KAPLAN Süleyman,ODACI Ersan,Aslan Hüseyin,AKSAK KARAMEŞE SELİNA,Ünal Deniz,ALTUNKAYNAK B. Zuhal,Gündoğdu Cemal,GÖKYAR AHMET Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study. , 2009, ss.169 - 174.
AMA ÜNAL B,KAPLAN S,ODACI E,Aslan H,AKSAK KARAMEŞE S,Ünal D,ALTUNKAYNAK B,Gündoğdu C,GÖKYAR A Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study. . 2009; 169 - 174.
Vancouver ÜNAL B,KAPLAN S,ODACI E,Aslan H,AKSAK KARAMEŞE S,Ünal D,ALTUNKAYNAK B,Gündoğdu C,GÖKYAR A Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study. . 2009; 169 - 174.
IEEE ÜNAL B,KAPLAN S,ODACI E,Aslan H,AKSAK KARAMEŞE S,Ünal D,ALTUNKAYNAK B,Gündoğdu C,GÖKYAR A "Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study." , ss.169 - 174, 2009.
ISNAD ÜNAL, Bünyami vd. "Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study". (2009), 169-174.
APA ÜNAL B, KAPLAN S, ODACI E, Aslan H, AKSAK KARAMEŞE S, Ünal D, ALTUNKAYNAK B, Gündoğdu C, GÖKYAR A (2009). Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study. Eurasian Journal of Medicine, 41(3), 169 - 174.
Chicago ÜNAL Bünyami,KAPLAN Süleyman,ODACI Ersan,Aslan Hüseyin,AKSAK KARAMEŞE SELİNA,Ünal Deniz,ALTUNKAYNAK B. Zuhal,Gündoğdu Cemal,GÖKYAR AHMET Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study. Eurasian Journal of Medicine 41, no.3 (2009): 169 - 174.
MLA ÜNAL Bünyami,KAPLAN Süleyman,ODACI Ersan,Aslan Hüseyin,AKSAK KARAMEŞE SELİNA,Ünal Deniz,ALTUNKAYNAK B. Zuhal,Gündoğdu Cemal,GÖKYAR AHMET Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study. Eurasian Journal of Medicine, vol.41, no.3, 2009, ss.169 - 174.
AMA ÜNAL B,KAPLAN S,ODACI E,Aslan H,AKSAK KARAMEŞE S,Ünal D,ALTUNKAYNAK B,Gündoğdu C,GÖKYAR A Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study. Eurasian Journal of Medicine. 2009; 41(3): 169 - 174.
Vancouver ÜNAL B,KAPLAN S,ODACI E,Aslan H,AKSAK KARAMEŞE S,Ünal D,ALTUNKAYNAK B,Gündoğdu C,GÖKYAR A Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study. Eurasian Journal of Medicine. 2009; 41(3): 169 - 174.
IEEE ÜNAL B,KAPLAN S,ODACI E,Aslan H,AKSAK KARAMEŞE S,Ünal D,ALTUNKAYNAK B,Gündoğdu C,GÖKYAR A "Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study." Eurasian Journal of Medicine, 41, ss.169 - 174, 2009.
ISNAD ÜNAL, Bünyami vd. "Neuroprotective effects of methylprednisolone and hypothermia after experimental spinal cord injury: A histopathological and stereological Study". Eurasian Journal of Medicine 41/3 (2009), 169-174.