کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5998920 1181455 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cerebellar Purkinje cell neurodegeneration after cardiac arrest: Effect of therapeutic hypothermia
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی کاردیولوژی و پزشکی قلب و عروق
پیش نمایش صفحه اول مقاله
Cerebellar Purkinje cell neurodegeneration after cardiac arrest: Effect of therapeutic hypothermia
چکیده انگلیسی

AimsThe cerebellum is among the brain regions most vulnerable to damage caused by cardiac arrest, and cerebellar Purkinje cell loss may contribute to neurologic dysfunction, including post-hypoxic myoclonus. However, it remains unknown whether cerebellar Purkinje cells are protected by post-cardiac arrest therapeutic hypothermia (TH). Therefore, we examined the effect of post-cardiac arrest TH onset and duration on cerebellar Purkinje cell loss.MethodsSamples from a previously published study of post-cardiac arrest TH were utilized for the present analysis. Adult male rats subjected to asphyxial cardiac arrest and cardiopulmonary resuscitation were block randomized to normothermia (37.0 °C) or TH (33.0 °C) initiated 0, 1, 4, or 8 h after return of spontaneous circulation (ROSC) and maintained for 24 or 48 h. Cerebella from rats surviving 7 days after ROSC were processed for histology and immunohistochemistry. Purkinje cell density was quantified in Nissl-stained sections of the primary fissure of the cerebellar vermis.ResultsWith post-cardiac arrest normothermia, Purkinje cell density in the primary fissure was severely reduced compared to sham-injured controls (3.8 ± 1.8 cells mm−1 vs. 35.9 ± 2.4 cells mm−1, p < 0.001). TH moderately improved Purkinje cell survival in all groups combined (14.0 ± 5.6 cells mm−1, p < 0.001 compared to normothermia). There was no statistical difference in Purkinje cell protection based on TH onset time or duration.ConclusionThese results indicate that post-cardiac arrest TH protects selectively vulnerable cerebellar Purkinje cells within a broad therapeutic window. The potential clinical implications for improving Purkinje cell survival require further investigation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Resuscitation - Volume 83, Issue 12, December 2012, Pages 1511-1516
نویسندگان
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