Abstract
Aim: Constraint-induced movement therapy (CIMT) has emerged as a promising therapeutic strategy for improving affected upper limb function in children with hemiplegic cerebral palsy (CP). However, little is known about the changes in the brain that are induced by CIMT. This study was designed to investigate these changes and behavioural performance after CIMT intervention in mice with neonatal hypoxic-ischemic brain injury. Method: We utilized the neonatal hypoxic-ischemic brain injury model established in mice pups. Three weeks after the injury, the mice were randomly assigned to the following three groups: the control group (n=15), the enriched-environment group (n=17), and the CIMT with an enriched-environment group (CIMT-EE, n=15). 5-bromo-2-deoxyuridine (BrdU) was injected daily to label proliferating cells during the 2 weeks of intervention. Results: The CIMT-EE group showed better fall rate in the horizontal ladder rung walking test (mean 5.4%, SD 3.6%) than either the control (mean 14.3%, SD 7.3%; p=0.001) or enriched-environment (mean 12.4%, SD 7.7%; p=0.010) groups 2 weeks after the end of intervention. The CIMT-EE group also showed more neurogenesis (mean 7069 cells/mm3, SD 4017 cells/mm3) than either the control group (mean 1555 cells/mm3, SD 1422 cells/mm3; p<0.001) or enriched-environment group (mean 2994 cells/mm3, SD 3498 cells/mm3; p=0.001) in the subventricular zone. In the striatum, neurogenesis in the CIMT-EE group (mean 534 cells/mm3, SD 441 cells/mm3) was greater than in the control group (mean 95 cells/mm3, SD 133 cells/mm3; p=0.001). Interpretation: There was CIMT-EE enhanced neurogenesis in the brain along with functional benefits in mice after early hypoxic-ischemic brain injury. This is the first study to demonstrate the effects of CIMT on neurogenesis and functional recovery after experimental injury to an immature brain.
| Original language | English |
|---|---|
| Pages (from-to) | 327-333 |
| Number of pages | 7 |
| Journal | Developmental Medicine and Child Neurology |
| Volume | 53 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2011 Apr 1 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Pediatrics, Perinatology, and Child Health
- Developmental Neuroscience
- Clinical Neurology
Cite this
}
Effects of constraint-induced movement therapy on neurogenesis and functional recovery after early hypoxic-ischemic injury in mice. / Rha, Dong Wook; Kang, Seong Woong; Park, Yoon Ghil; Cho, Sung Rae; Lee, Won Taek; Lee, Jong Eun; Nam, Chung Mo; Han, Kyung Hwa; Park, Eun Sook.
In: Developmental Medicine and Child Neurology, Vol. 53, No. 4, 01.04.2011, p. 327-333.Research output: Contribution to journal › Article
TY - JOUR
T1 - Effects of constraint-induced movement therapy on neurogenesis and functional recovery after early hypoxic-ischemic injury in mice
AU - Rha, Dong Wook
AU - Kang, Seong Woong
AU - Park, Yoon Ghil
AU - Cho, Sung Rae
AU - Lee, Won Taek
AU - Lee, Jong Eun
AU - Nam, Chung Mo
AU - Han, Kyung Hwa
AU - Park, Eun Sook
PY - 2011/4/1
Y1 - 2011/4/1
N2 - Aim: Constraint-induced movement therapy (CIMT) has emerged as a promising therapeutic strategy for improving affected upper limb function in children with hemiplegic cerebral palsy (CP). However, little is known about the changes in the brain that are induced by CIMT. This study was designed to investigate these changes and behavioural performance after CIMT intervention in mice with neonatal hypoxic-ischemic brain injury. Method: We utilized the neonatal hypoxic-ischemic brain injury model established in mice pups. Three weeks after the injury, the mice were randomly assigned to the following three groups: the control group (n=15), the enriched-environment group (n=17), and the CIMT with an enriched-environment group (CIMT-EE, n=15). 5-bromo-2-deoxyuridine (BrdU) was injected daily to label proliferating cells during the 2 weeks of intervention. Results: The CIMT-EE group showed better fall rate in the horizontal ladder rung walking test (mean 5.4%, SD 3.6%) than either the control (mean 14.3%, SD 7.3%; p=0.001) or enriched-environment (mean 12.4%, SD 7.7%; p=0.010) groups 2 weeks after the end of intervention. The CIMT-EE group also showed more neurogenesis (mean 7069 cells/mm3, SD 4017 cells/mm3) than either the control group (mean 1555 cells/mm3, SD 1422 cells/mm3; p<0.001) or enriched-environment group (mean 2994 cells/mm3, SD 3498 cells/mm3; p=0.001) in the subventricular zone. In the striatum, neurogenesis in the CIMT-EE group (mean 534 cells/mm3, SD 441 cells/mm3) was greater than in the control group (mean 95 cells/mm3, SD 133 cells/mm3; p=0.001). Interpretation: There was CIMT-EE enhanced neurogenesis in the brain along with functional benefits in mice after early hypoxic-ischemic brain injury. This is the first study to demonstrate the effects of CIMT on neurogenesis and functional recovery after experimental injury to an immature brain.
AB - Aim: Constraint-induced movement therapy (CIMT) has emerged as a promising therapeutic strategy for improving affected upper limb function in children with hemiplegic cerebral palsy (CP). However, little is known about the changes in the brain that are induced by CIMT. This study was designed to investigate these changes and behavioural performance after CIMT intervention in mice with neonatal hypoxic-ischemic brain injury. Method: We utilized the neonatal hypoxic-ischemic brain injury model established in mice pups. Three weeks after the injury, the mice were randomly assigned to the following three groups: the control group (n=15), the enriched-environment group (n=17), and the CIMT with an enriched-environment group (CIMT-EE, n=15). 5-bromo-2-deoxyuridine (BrdU) was injected daily to label proliferating cells during the 2 weeks of intervention. Results: The CIMT-EE group showed better fall rate in the horizontal ladder rung walking test (mean 5.4%, SD 3.6%) than either the control (mean 14.3%, SD 7.3%; p=0.001) or enriched-environment (mean 12.4%, SD 7.7%; p=0.010) groups 2 weeks after the end of intervention. The CIMT-EE group also showed more neurogenesis (mean 7069 cells/mm3, SD 4017 cells/mm3) than either the control group (mean 1555 cells/mm3, SD 1422 cells/mm3; p<0.001) or enriched-environment group (mean 2994 cells/mm3, SD 3498 cells/mm3; p=0.001) in the subventricular zone. In the striatum, neurogenesis in the CIMT-EE group (mean 534 cells/mm3, SD 441 cells/mm3) was greater than in the control group (mean 95 cells/mm3, SD 133 cells/mm3; p=0.001). Interpretation: There was CIMT-EE enhanced neurogenesis in the brain along with functional benefits in mice after early hypoxic-ischemic brain injury. This is the first study to demonstrate the effects of CIMT on neurogenesis and functional recovery after experimental injury to an immature brain.
UR - http://www.scopus.com/inward/record.url?scp=79952585914&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79952585914&partnerID=8YFLogxK
U2 - 10.1111/j.1469-8749.2010.03877.x
DO - 10.1111/j.1469-8749.2010.03877.x
M3 - Article
C2 - 21232055
AN - SCOPUS:79952585914
VL - 53
SP - 327
EP - 333
JO - Developmental Medicine and Child Neurology
JF - Developmental Medicine and Child Neurology
SN - 0012-1622
IS - 4
ER -