Open AccessMedium- and long-term functional behavior evaluations in an experimental focal ischemic stroke mouse model
Author(s) -
Juçara Loli de Oliveira,
Marina Ávila,
Thiago César Martins,
Márcio Alvarez-Silva,
Elisa Cristiana Winkelmann Duarte,
Afonso Shiguemi Inoue Salgado,
Francisco José Cidral-Filho,
William R. Reed,
Daniel Fernandes Martins
Publication year - 2020
Publication title -
cognitive neurodynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.83
H-Index - 41
eISSN - 1871-4099
pISSN - 1871-4080
DOI - 10.1007/s11571-020-09584-8
Subject(s) - occlusion , cognition , behavioural despair test , mood , grip strength , medicine , tail suspension test , nociception , physical medicine and rehabilitation , affect (linguistics) , stroke (engine) , psychology , anesthesia , neuroscience , physical therapy , cardiology , psychiatry , antidepressant , hippocampus , mechanical engineering , communication , engineering , receptor
Cerebrovascular accident (CVA) is one of the leading causes of death and disability worldwide, as well as a major financial burden for health care systems. CVA rodent models provide experimental support to determine possible in vivo therapies to reduce brain injury and consequent sequelae. This study analyzed nociceptive, motor, cognitive and mood functions in mice submitted to distal middle cerebral artery (DMCA) occlusion. Male C57BL mice (n = 8) were randomly allocated to control or DMCA groups. Motor function was evaluated with the tests: grip force, rotarod and open field; and nociceptive threshold with von Frey and hot plate assessments. Cognitive function was evaluated with the inhibitory avoidance test, and mood with the tail suspension test. Evaluations were conducted on the seventh- and twenty-eighth-day post DMCA occlusion to assess medium- and long-term effects of the injury, respectively. DMCA occlusion significantly decreases muscle strength and spontaneous locomotion ( p < 0.05) both medium- and long term; as well as increases immobility in the tail-suspension test ( p < 0.05), suggesting a depressive-type behavior. However, DMCA occlusion did not affect nociceptive threshold nor cognitive functions ( p > 0.05). These results suggest that, medium- and long-term effects of DMCA occlusion include motor function impairments, but no sensory dysfunction. Additionally, the injury affected mood but did not hinder cognitive function.