[Features of the ultrastructure of the brain tissue of Meriones unguiculatus after cerebral ischemia and postischemic recirculation].

The authors studied the ultrastructure of the brain tissue in "symptom negative" clawed jirds (M. unguiculatus) in the presence of permanent and transient circulatory ischemia caused by ligation of the right common carotid artery and by a 3-minute occlusion of the left common carotid artery which was unattended by any clinical manifestations signifying cerebral ischemia. The formation of oedema and dystrophic changes in the right hemisphere differed from that in the left one.

[Possible significance of the gastrointestinal "steal" syndrome in experimental cerebral ischemia].

The authors studied the clinical manifestations of cerebral ischemia induced by the ligation of the right common carotid artery and by a 3-minute ligation of the left carotid artery in two groups of clawed jirds: 28 animals on the usual diet and 34 animals which were given the usual meal 2-3 hours prior to the operation after 24 hours of fasting. The clinical manifestations of cerebral ischemia were more significantly pronounced in the second group. This group was also characterized by a more marked hyperemia of the gastrointestinal tract as shown both macro- and microscopically.