Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2009-5-25
pubmed:abstractText
Predator odors, which are non-intrusive and naturalistic stressors of high ethological relevance, were used to study the neurobiology of innate fear in rodents. The present study investigates behavioral effects and the induction of c-fos mRNA in adult male predator naive mice caused by acute exposure to 2,5-dihydro-2,4,5-trimethylthiazoline (TMT), a component of the fox feces odor. On the behavioral level, TMT potently increased unconditioned freezing and decreased non-defensive grooming behavior. With quantitative real time PCR we established a strong TMT-induced activation in the bed nucleus of the stria terminalis (BNST) (eight-fold increase, p<0.016) and in the ventral olfactory bulb (two-fold increase, p<0.036). In contrast, no significant TMT-induced c-fos induction could be observed in the dorsal olfactory bulb or in the amygdala. Our results display robust fear responses of GAD67-GFP knock-in mice exposed to TMT and suggest that the ventral olfactory bulb and the BNST are strongly activated during the elicitation of fear through predator odor in these transgenic mice.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1872-7549
pubmed:author
pubmed:issnType
Electronic
pubmed:day
14
pubmed:volume
202
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
218-24
pubmed:meshHeading
pubmed-meshheading:19463704-Amygdala, pubmed-meshheading:19463704-Animals, pubmed-meshheading:19463704-Behavior, Animal, pubmed-meshheading:19463704-Brain, pubmed-meshheading:19463704-Feces, pubmed-meshheading:19463704-Foxes, pubmed-meshheading:19463704-Freezing Reaction, Cataleptic, pubmed-meshheading:19463704-Gene Knock-In Techniques, pubmed-meshheading:19463704-Glutamate Decarboxylase, pubmed-meshheading:19463704-Green Fluorescent Proteins, pubmed-meshheading:19463704-Grooming, pubmed-meshheading:19463704-Male, pubmed-meshheading:19463704-Mice, pubmed-meshheading:19463704-Mice, Inbred C57BL, pubmed-meshheading:19463704-Mice, Transgenic, pubmed-meshheading:19463704-Odors, pubmed-meshheading:19463704-Olfactory Bulb, pubmed-meshheading:19463704-Proto-Oncogene Proteins c-fos, pubmed-meshheading:19463704-RNA, Messenger, pubmed-meshheading:19463704-Septal Nuclei, pubmed-meshheading:19463704-Thiazoles
pubmed:year
2009
pubmed:articleTitle
Behavioral effects and pattern of brain c-fos mRNA induced by 2,5-dihydro-2,4,5-trimethylthiazoline, a component of fox feces odor in GAD67-GFP knock-in C57BL/6 mice.
pubmed:affiliation
Institute of Anatomy, University of Magdeburg, D-39120 Magdeburg, Germany. k.janitzky@gmx.de
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't