Format

Send to

Choose Destination
See comment in PubMed Commons below
Behav Brain Res. 2015 May 15;285:208-12. doi: 10.1016/j.bbr.2014.06.006. Epub 2014 Jun 11.

NK₃ receptor agonism reinstates temporal order memory in the hemiparkinsonian rat.

Author information

1
Center for Behavioral Neuroscience, University of Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany. Electronic address: owenchao@gmail.com.
2
Center for Behavioral Neuroscience, University of Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany.
3
Clinic of Nuclear Medicine, University Hospital Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany.

Abstract

Animals treated with unilateral 6-hydroxydopamine (6-ODHA) injections, an animal model of Parkinson's disease, exhibit deficits in memory for temporal order, but show intact novel object recognition. Since senktide, a potent neurokinin-3 receptor (NK3-R) agonist, has been shown to have promnestic effects in the aged rat and to alleviate scopolamine-induced impairment, the present study aimed to assess possible promnestic effects of senktide in the hemiparkinsonian rat model. Animals received unilateral 6-ODHA microinjections into the medial forebrain bundle. Two weeks later, they were randomly assigned to treatment with vehicle, 0.2, or 0.4 mg/kg senktide. Temporal order memory and place recognition tests were conducted, locomotor activity and turning behavior were assessed in the open field and anxiety-related behavior was measured in the light-dark box. Treatments were administered 30 min prior to behavioral testing with an interval of seven days between tests. The animals treated with 0.2 mg/kg senktide exhibited temporal order memory, unlike the vehicle-treated group. No significant treatment effects were found in the open field and light-dark box. Administration of 0.2 mg/kg senktide may influence the prefrontal cortex and hippocampus, leading to compensations for deficits in memory for temporal order.

KEYWORDS:

6-OHDA; NK(3) receptor; Parkinson's disease; Senktide; Temporal order memory

PMID:
24928770
DOI:
10.1016/j.bbr.2014.06.006
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center