Title :

From cerebral palsy to developmental coordination disorder: Development of preclinical rat models corresponding to recent epidemiological changes.

Author(s) :

Coq, Jacques-Olivier [Auteur]
Institut de Neurosciences de la Timone [INT]
Kochmann, Marine [Auteur]
Institut de Neurosciences de la Timone [INT]
Lacerda, Diego C [Auteur]
Institut de Neurosciences de la Timone [INT]
Khalki, Hanane [Auteur]
Institut de Neurosciences de la Timone [INT]
Delcour, Maxime [Auteur]
Neurosciences sensorielles et cognitives [NSC]
Toscano, Ana E [Auteur]
Federal University of Pernambuco [Recife]
Cayetanot, Florence [Auteur]
Institut de Neurosciences de la Timone [INT]
Canu, Marie-Hélène [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369
Barbe, Mary F [Auteur]
Temple University [Philadelphia]
Masahiro, Tsuji [Auteur]
Kyoto University

Journal title :

Annals of physical and rehabilitation medicine

Abbreviated title :

Ann Phys Rehabil Med

Volume number :

63

Pages :

422-430

Publication date :

2019-11-19

ISSN :

1877-0665

English keyword(s) :

Cerebral palsy
Developmental Coordination Disorder
Hypoperfusion
Intrauterine growth retardation
Prematurity
Sensorimotor restriction
White matter injury

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

Cerebral palsy (CP) is a complex syndrome of various sensory, motor and cognitive deficits. Its prevalence has recently decreased in some developed countries and its symptoms have also shifted since the 1960s. From the ...
Show more >Cerebral palsy (CP) is a complex syndrome of various sensory, motor and cognitive deficits. Its prevalence has recently decreased in some developed countries and its symptoms have also shifted since the 1960s. From the 1990s, CP has been associated with prematurity, but recent epidemiologic studies show reduced or absent brain damage, which recapitulates developmental coordination disorder (DCD). In previous studies, we developed a rat model based on mild intrauterine hypoperfusion (MIUH) that recapitulated the diversity of symptoms observed in preterm survivors. Briefly, MIUH led to early inflammatory processes, diffuse brain damage, minor locomotor deficits, musculoskeletal pathologies, neuroanatomical and functional disorganization of the primary somatosensory (S1) cortex but not in the motor cortex (M1), delayed sensorimotor reflexes, spontaneous hyperactivity, deficits in sensory information processing, and memory and learning impairments in adult rats. Adult MIUH rats also exhibited changes in muscle contractile properties and phenotype, enduring hyperreflexia and spasticity, as well as hyperexcitability in the sensorimotor cortex. We recently developed a rat model of DCD based on postnatal sensorimotor restriction (SMR) without brain damage. Briefly, SMR led to digitigrade locomotion (i.e., "toe walking") related to ankle-knee overextension, degraded musculoskeletal tissues (e.g., gastrocnemius atrophy), and lumbar hyperreflexia. The postnatal SMR then led to secondary degradation of the hind-limb maps in S1 and M1 cortices, altered cortical response properties and cortical hyperexcitability, but no brain damage. Thus, our 2 rat models appear to recapitulate the diversity of symptoms ranging from CP to DCD and contribute to understanding the emergence and mechanisms underlying the corresponding neurodevelopmental disorders. These preclinical models seem promising for testing strategies of rehabilitation based on both physical and cognitive training to promote adaptive brain plasticity and to improve physical body conditions.Show less >

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
Univ. Artois
Univ. Littoral Côte d’Opale

Collections :

• Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369

Research team(s) :

Activité Physique, Muscle, Santé (APMS)

Submission date :

2021-08-10T16:48:05Z
2021-09-15T08:11:54Z
2021-09-15T08:31:46Z
2021-09-15T08:38:37Z