Aging Effect on Post-recovery Hypofusion and Mortality Following Cardiac Arrest and Resuscitation in Rats

  • Kui XuEmail author
  • Michelle A. Puchowicz
  • Joseph C. LaManna
Conference paper
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 876)


In this study we investigated the effect of aging on brain blood flow following transient global ischemia. Male Fisher rats (6 and 24 months old) underwent cardiac arrest (15 min) and resuscitation. Regional brain (cortex, hippocampus, brainstem and cerebellum) blood flow was measured in non-arrested rats and 1-h recovery rats using [14C] iodoantipyrene (IAP) autoradiography; the 4-day survival rate was determined in the two age groups. The pre-arrest baseline blood flows were similar in cortex, brainstem and cerebellum between the 6-month and the 24-month old rats; however, the baseline blood flow in hippocampus was significantly lower in the 24-month old group. At 1 h following cardiac arrest and resuscitation, both 6-month and 24-month groups had significantly lower blood flows in all regions than the pre-arrest baseline values; compared to the 6-month old group, the blood flow was significantly lower (about 40 % lower) in all regions in the 24-month old group. The 4-day survival rate for the 6-month old rats was 50 % (3/6) whereas none of the 24-month old rats (0/10) survived for 4 days. The data suggest that there is an increased vulnerability to brain ischemic-reperfusion injury in the aged rats; the degree of post-recovery hypoperfusion may contribute to the high mortality in the aged rats following cardiac arrest and resuscitation.


Transient global ischemia Cerebral blood flow Ischemia/reperfusion injury Aged rat Survival 



This study was supported by NIH grant NINDS 1 R01 NS46074.


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Copyright information

© Springer Science+Business Media, New York 2016

Authors and Affiliations

  • Kui Xu
    • 1
    Email author
  • Michelle A. Puchowicz
    • 2
  • Joseph C. LaManna
    • 1
  1. 1.Department of Physiology and BiophysicsCase Western Reserve UniversityClevelandUSA
  2. 2.Departments of NutritionCase Western Reserve UniversityClevelandUSA

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