Rat models of upper extremity impairment in stroke

Jeffrey A. Kleim, Jeffery A. Boychuk, De Anna L. Adkins

Research output: Contribution to journalReview article

50 Scopus citations

Abstract

Stroke remains the leading cause of adult disability, with upper extremity motor impairments being the most prominent functional deficit in surviving stroke victims. The development of animal models of upper extremity dysfunction after stroke has enabled investigators to examine the neural mechanisms underlying rehabilitation-dependent motor recovery as well as the efficacy of various adjuvant therapies for enhancing recovery. Much of this research has focused on rat models of forelimb motor function after experimentally induced ischemic or hemorrhagic stroke. This article provides a review of several different methods for inducing stroke, including devascularization, photothrombosis, chemical vasoconstriction, and hemorrhagia. We also describe a battery of sensorimotor tasks for assessing forelimb motor function after stroke. The tasks range from measures of gross motor performance to fine object manipulation and kinematic movement analysis, and we offer a comparison of the sensitivity for revealing motor deficits and the amount of time required to administer each motor test. In addition, we discuss several important methodological issues, including the importance of testing on multiple tasks to characterize the nature of the impairments, establishing stable baseline prestroke motor performance measures, dissociating the effects of acute versus chronic testing, and verifying lesion location and size. Finally, we outline general considerations for conducting research using rat models of stroke and the role that these models should play in guiding clinical trials.

Original languageEnglish (US)
Pages (from-to)374-384
Number of pages11
JournalILAR Journal
Volume48
Issue number4
StatePublished - Dec 7 2007
Externally publishedYes

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Keywords

  • Forelimb
  • Impairment
  • Ischemia
  • Middle cerebral artery
  • Rat
  • Stroke

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Kleim, J. A., Boychuk, J. A., & Adkins, D. A. L. (2007). Rat models of upper extremity impairment in stroke. ILAR Journal, 48(4), 374-384.