Evolution of spinal cord injury in a porcine model of prolonged aortic occlusion
Φόρτωση...
Ημερομηνία
Συγγραφείς
Papakostas, J. C.
Matsagas, M. I.
Toumpoulis, I. K.
Malamou-Mitsi, V. D.
Pappa, L. S.
Gkrepi, C.
Anagnostopoulos, C. E.
Kappas, A. M.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer-reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
J Surg Res
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
BACKGROUND: Spinal cord injury and subsequent paraplegia remains an unpredictable and devastating complication of thoracoabdominal aortic surgery. The aim of this study was to investigate spinal cord injury due to prolonged thoracoabdominal aortic occlusion. MATERIALS AND METHODS: We used a highly reproducible porcine model of 45-min thoracoabdominal aortic occlusion, which was accomplished by two balloon occlusion catheters. Neurological evaluation after the end of experiment was performed by an independent observer according to the Tarlov scale. The lower thoracic and lumbar spinal cords were harvested at 10, 48, and 120 h (n = 6 animals per time point) and examined histologically with hematoxylin and eosin (H&E) stain and TUNEL method. Tarlov scores, number of neurons, and the grade of inflammation were analyzed. RESULTS: H&E staining revealed reduction in the number of motor neurons which occurred in two phases (between 0 and 10 h and between 48 and 120 h of reperfusion), as well as development of inflammation in spinal cord sections during the reperfusion period, reaching a peak at 48 h. TUNEL reaction was negative for apoptotic neurons at any time point. CONCLUSIONS: In this porcine model, we demonstrated that, after 45 min of thoracoabdominal aortic occlusion, motor neuron death seems to occur in two phases (immediate and delayed). Inflammation was a subsequent event of transient prolonged spinal cord ischemia and possibly a major contributor of delayed neuronal death. Using TUNEL straining we found no evidence of neuronal apoptosis at any time point of reperfusion.
Περιγραφή
Λέξεις-κλειδιά
Abdomen/*surgery, Animals, Aorta, Abdominal/surgery, Aorta, Thoracic/surgery, Arterial Occlusive Diseases/*etiology/immunology/pathology, Blood Pressure, Cell Survival, Disease Models, Animal, Female, In Situ Nick-End Labeling, Intraoperative Complications/immunology/*pathology, Ischemia/etiology/pathology, Lymphocytes/pathology, Macrophages/pathology, Male, Motor Neurons/pathology, Myelitis/etiology/immunology/pathology, Severity of Illness Index, Spinal Cord/*blood supply/immunology/pathology, Spinal Cord Diseases/*etiology/immunology/pathology, Surgical Instruments, Swine, Time Factors
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
http://www.ncbi.nlm.nih.gov/pubmed/16337967
http://ac.els-cdn.com/S0022480405005421/1-s2.0-S0022480405005421-main.pdf?_tid=ac4c533ab223e6e6b05e8ba230fe450d&acdnat=1336386396_af781a056f0ac8686ae317a471e5fae3
http://ac.els-cdn.com/S0022480405005421/1-s2.0-S0022480405005421-main.pdf?_tid=ac4c533ab223e6e6b05e8ba230fe450d&acdnat=1336386396_af781a056f0ac8686ae317a471e5fae3
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής