Skip to main content
Log in

Impairment to Cognitive Functions in Wistar Rats in a Model of the Preclinical Stage of Parkinson’s Disease

  • Published:
Neuroscience and Behavioral Physiology Aims and scope Submit manuscript

The preclinical stage of Parkinson’s disease (PD), when most dopaminergic neurons in the nigrostriatal system of the brain are still intact and compensatory mechanisms have not yet been overwhelmed, is the most effective “therapeutic window.” Much attention in recent years has therefore been focused on seeking early markers for the neurodegenerative process and developing experimental models. The present study addressed the task of analyzing early behavioral changes reflecting impairments in the cognitive and affective domains on modeling the premotor stage of PD in rats, with identification of the most informative tests. A model developed in our laboratory is based on a prolonged (21 days) preclinical stage of PD in rats by increasing suppression of the ubiquitin-proteasome system of the brain induced by two intranasal doses of the specific proteasome inhibitor lactacystin. Cognitive impairments were assessed using the novel object recognition and Y maze tests and the what–where–when paradigm. Anxiety was assessed in the elevated plus maze and open field tests. Administration of lactacystin was found to degrade spatial memory, episodic memory, and recognition of novel objects in rats on the background of a transient increase in the level of anxiety. These data suggest that impairments in the cognitive and affective domains may be early signs of the development of neurodegeneration in the brain.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to N. N. Abdurasulova.

Additional information

Translated from Zhurnal Vysshei Nervnoi Deyatel’nosti imeni I. P. Pavlova, Vol. 69, No. 3, pp. 364–381, May–June, 2019.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Abdurasulova, N.N., Ekimova, I.V., Chernyshev, M.V. et al. Impairment to Cognitive Functions in Wistar Rats in a Model of the Preclinical Stage of Parkinson’s Disease. Neurosci Behav Physi 50, 439–450 (2020). https://doi.org/10.1007/s11055-020-00919-w

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11055-020-00919-w

Keywords

Navigation