Pre-training administration of tianeptine, but not propranolol, protects hippocampus-dependent memory from being impaired by predator stress
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作者:
Campbell, Adam M.
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Univ S Florida, Dept Psychol, Tampa, FL 33620 USA
VA Hosp, Tampa, FL USAUniv S Florida, Dept Psychol, Tampa, FL 33620 USA
Campbell, Adam M.
[1
,2
]
Park, Collin R.
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Univ S Florida, Dept Psychol, Tampa, FL 33620 USA
VA Hosp, Tampa, FL USAUniv S Florida, Dept Psychol, Tampa, FL 33620 USA
Park, Collin R.
[1
,2
]
Zoladz, Phillip R.
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机构:
Univ S Florida, Dept Psychol, Tampa, FL 33620 USA
VA Hosp, Tampa, FL USAUniv S Florida, Dept Psychol, Tampa, FL 33620 USA
Zoladz, Phillip R.
[1
,2
]
Munoz, Carmen
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IRI Servier, Courbevoie, FranceUniv S Florida, Dept Psychol, Tampa, FL 33620 USA
Munoz, Carmen
[4
]
Fleshner, Monika
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Univ Colorado, Ctr Neurosci, Boulder, CO 80309 USA
Univ Colorado, Dept Kinesiol & Appl Physiol, Boulder, CO 80309 USAUniv S Florida, Dept Psychol, Tampa, FL 33620 USA
Fleshner, Monika
[5
,6
]
Diamond, David M.
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机构:
Univ S Florida, Dept Psychol, Tampa, FL 33620 USA
VA Hosp, Tampa, FL USA
Univ S Florida, Dept Mol Pharmacol & Physiol, Tampa, FL 33620 USAUniv S Florida, Dept Psychol, Tampa, FL 33620 USA
Diamond, David M.
[1
,2
,3
]
机构:
[1] Univ S Florida, Dept Psychol, Tampa, FL 33620 USA
[2] VA Hosp, Tampa, FL USA
[3] Univ S Florida, Dept Mol Pharmacol & Physiol, Tampa, FL 33620 USA
[4] IRI Servier, Courbevoie, France
[5] Univ Colorado, Ctr Neurosci, Boulder, CO 80309 USA
[6] Univ Colorado, Dept Kinesiol & Appl Physiol, Boulder, CO 80309 USA
Extensive research has shown that the antidepressant tianeptine blocks the adverse effects of chronic stress on hippocampal functioning. The current series of experiments extended this area of investigation by examining the influence of tianeptine on acute stress-induced impairments of spatial (hippocampus-dependent) memory. Tianeptine (10 mg/kg, ip) administered to adult male rats before, but not after, water maze training blocked the amnestic effects of predator stress (occurring between training and retrieval) on memory. The protective effects of tianeptine on memory occurred in rats which had extensive pre-stress training, as well as in rats which had only a single day of training. Tianeptine blocked stress effects on memory without altering the stress-induced increase in corticosterone levels. Propranolol, a beta-adrenergic receptor antagonist (5 and 10 mg/kg, ip), in contrast, did not block stress-induced amnesia. These findings indicate that treatment with tianeptine, unlike propanolol, provides an effective means with which to block the adverse effects of stress on cognitive functions of the hippocampus. (C) 2007 Elsevier B.V. and ECNP. All rights reserved.