کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4349545 1296946 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Habituation to an open field alters ecto-nucleotidase activities in rat hippocampal synaptosomes
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
Habituation to an open field alters ecto-nucleotidase activities in rat hippocampal synaptosomes
چکیده انگلیسی

ATP and adenosine may play a role in the mechanisms of synaptic plasticity and memory formation. Previous studies have shown that ecto-nucleotidase activities are altered during memory consolidation of an aversive task named step-down inhibitory avoidance. Here we investigate ecto-nucleotidase activities in hippocampal synaptosomes of rats submitted to training and test sessions of habituation to open field, which is one of the most elementary forms of learning. There were no significant alterations on ATP, ADP and AMP hydrolysis immediately after the training session. However, immediately after the test session (0 min), there was a significant increase of ATP hydrolysis (61%), but not of ADP and AMP hydrolysis. Sixty minutes after the test session, a significant increase of NTPDase (75% and 60.5% for ATP and ADP hydrolysis, respectively) and ecto-5′-nucleotidase (40%) activities was observed. This study reveals the involvement of ecto-nucleotidase activities in different learning paradigms during memory processing.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 413, Issue 1, 8 February 2007, Pages 21–24
نویسندگان
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