Linked Life Data

17634380

Source:http://linkedlifedata.com/resource/pubmed/id/17634380

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
29
pubmed:dateCreated
2007-7-19
pubmed:abstractText
cAMP response element-binding protein (CREB) has been implicated in the molecular and cellular mechanisms of chronic antidepressant (AD) treatment, although its role in the behavioral response is unclear. CREB-deficient (CREB(alpha delta) mutant) mice demonstrate an antidepressant phenotype in the tail suspension test (TST) and forced-swim test. Here, we show that, at baseline, CREB(alpha delta) mutant mice exhibited increased hippocampal cell proliferation and neurogenesis compared with wild-type (WT) controls, effects similar to those observed in WT mice after chronic desipramine (DMI) administration. Neurogenesis was not further augmented by chronic DMI treatment in CREB(alpha delta) mutant mice. Serotonin depletion decreased neurogenesis in CREB(alpha delta) mutant mice to WT levels, which correlated with a reversal of the antidepressant phenotype in the TST. This effect was specific for the reversal of the antidepressant phenotype in these mice, because serotonin depletion did not alter a baseline anxiety-like behavior in CREB(alpha delta) mutant mice. The response to chronic AD treatment in the novelty-induced hypophagia (NIH) test may rely on neurogenesis. Therefore, we used this paradigm to evaluate chronic AD treatment in CREB(alpha delta) mutant mice to determine whether the increased neurogenesis in these mice alters their response in the NIH paradigm. Whereas both WT and CREB(alpha delta) mutant mice responded to chronic AD treatment in the NIH paradigm, only CREB(alpha delta) mutant mice responded to acute AD treatment. However, in the elevated zero maze, DMI did not reverse anxiety behavior in mutant mice. Together, these data show that increased hippocampal neurogenesis allows for an antidepressant phenotype as well as a rapid onset of behavioral responses to AD treatment.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1529-2401
pubmed:author
pubmed:issnType
Electronic
pubmed:day
18
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
7860-8
pubmed:dateRevised
2007-12-3
pubmed:meshHeading
pubmed-meshheading:17634380-Analysis of Variance, pubmed-meshheading:17634380-Animals, pubmed-meshheading:17634380-Antidepressive Agents, pubmed-meshheading:17634380-Bromodeoxyuridine, pubmed-meshheading:17634380-Cell Count, pubmed-meshheading:17634380-Cell Proliferation, pubmed-meshheading:17634380-Cyclic AMP Response Element-Binding Protein, pubmed-meshheading:17634380-Desipramine, pubmed-meshheading:17634380-Enzyme Inhibitors, pubmed-meshheading:17634380-Exploratory Behavior, pubmed-meshheading:17634380-Fenclonine, pubmed-meshheading:17634380-Hindlimb Suspension, pubmed-meshheading:17634380-Hippocampus, pubmed-meshheading:17634380-Maze Learning, pubmed-meshheading:17634380-Mice, pubmed-meshheading:17634380-Mice, Inbred C57BL, pubmed-meshheading:17634380-Mice, Mutant Strains, pubmed-meshheading:17634380-Neurons, pubmed-meshheading:17634380-Reaction Time, pubmed-meshheading:17634380-Serotonin, pubmed-meshheading:17634380-Swimming
pubmed:year
2007
pubmed:articleTitle
cAMP response element-binding protein deficiency allows for increased neurogenesis and a rapid onset of antidepressant response.
pubmed:affiliation
Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural