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Iranian Journal of Basic Medical Sciences، جلد ۱۸، شماره ۲، صفحات ۱۳۰-۱۳۷
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چکیده فارسی مقاله |
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کلیدواژههای فارسی مقاله |
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عنوان انگلیسی |
Intra-CA1 administration of FK-506 (tacrolimus) in rat impairs learning and memory in an inhibitory avoidance paradigm |
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چکیده انگلیسی مقاله |
Objective(s): Calcineurin (CN) is a main phosphatase and a critical regulator of cellular pathways for learning, memory, and plasticity. The FK-506 (tacrolimus),a phosphatase inhibitor, is a fungal-derived agent and a common immune suppressant extensively used for tissue transplantation. To further clarify the role of CN in different stages oflearning and memory the main aim of this study was to evaluate the role of FK-506 in an inhibitory avoidance model. Materials and Methods:Using different doses of FK-506 (0.5, 5, and 50 nM) in the CA1 of hippocampus at different times (before, after the training and also before the test), the effect of drug was evaluated in a step-through inhibitory avoidance paradigm.The latency of entering to the dark compartment was considered as a criterion for memory. Results: Thepre-training intra-CA1 injections of FK-506 impaired inhibitory avoidance (IA) learning acquisition. In addition, thepost-training intra-CA1 injections of FK-506 at 1, 2, and 3 hr relative to training impaired memory consolidation. Moreover, thepre-test intra-CA1 injections of FK-506 impaired memory retrieval. Conclusion:These findings suggest that the FK-506 selectively interferes with acquisition, retention, and retrieval of information processing in CA1 of hippocampus. Given the crucial role of CN in common signaling pathway of higher functions such as memory performance and cognition, in future it would be a probable therapeutic target in the treatment of a wide verity of neurological conditions involving memory. |
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کلیدواژههای انگلیسی مقاله |
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نویسندگان مقاله |
امیرمسعود hadjiasgary | amirmasoud hadjiasgary physiology research center, kashan university of medical sciences, kashan, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی کاشان (Kashan university of medical sciences)
حمیدرضا بنفشه | hamid reza banafshe physiology research center, kashan university of medical sciences, kashan, iran. department of pharmacology, kashan university of medical sciences, kashan, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی کاشان (Kashan university of medical sciences)
ابوالفضل ارجمند | abolfazl ardjmand physiology research center, kashan university of medical sciences, kashan, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی کاشان (Kashan university of medical sciences)
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نشانی اینترنتی |
http://ijbms.mums.ac.ir/article_4013.html |
فایل مقاله |
اشکال در دسترسی به فایل - ./files/site1/rds_journals/87/article-87-45300.pdf |
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زبان مقاله منتشر شده |
en |
موضوعات مقاله منتشر شده |
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نوع مقاله منتشر شده |
Original Article |
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