Research
My long-term research goal is to find a cure for paralysis associated with spinal cord injury and other CNS diseases.
My current research is to investigate the mechanism of neuronal degeneration and to find new approaches to prevent neuronal death and promote neuronal survival and regeneration.
My current research focuses on the following areas:
- Gene expression changes in CNS neurons in response to axonal injury and their relationship with neuronal death and neuronal regeneration.
- Effects and mechanisms of peripheral nerve (PN) graft implantation, stem cell transplantation and neurotrophic factor treatment on the survival and regeneration of CNS neurons following axonal injury.
- Mechanisms underlying neuronal death and regeneration after spinal cord injury.
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Selected Publications
*:
Corresponding author
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Wu, W.*:
Expression of nitric oxide synthase in injured CNS
neurons as shown by NADPH-diaphorase histochemistry.
Exp. Neurol. 120:153-159, 1993.
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Wu, W.*
and Li, L.: Inhibition of nitric oxide synthase
reduces death of spinal motoneurons due to avulsion
lesion. Neurosci. Lett. 153(2):121-124, 1993.
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Wu, W.*
and Scott, D.E.: Increased expression of nitric oxide
synthase in hypothalamic neuronal regeneration. Exp.
Neurol. 121:279-283, 1993.
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Liuzzi,F.J., Wu,W., Scoville, S.A., and
Schinco,F.P.: Development of nitric oxide synthase
expression in the superficial dorsal horn of the rat
spinal cord. Exp. Neurol. 121:275-278, 1993.
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Wu, W.*,
Scott, D.E., and Reiter, R.J.: Transplantation of
mammalian pineal gland: studies of survival,
revascularization, reinnervation, and recovery of
function. Exp. Neurol. 122:88-99, 1993.
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Wu, W.*,
Liuzzi,F.J., Schinco,F.P., Depto,A., Li,Y., Mong,J.A.,
Dawson,T. and Snyder,S.H.: Neuronal nitric oxide
synthase is induced in spinal neurons by traumatic
injury. Neuroscience. 61(4):719-726, 1994.
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Wu, W.*,
Li,Y. and Schinco,F.P.: Expression of c-jun and nitric
oxide synthase in rat spinal motoneurons following
axonal injury. Neurosci. Lett. 179:157-161, 1994.
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Wu, W.*,
Han,K., Li,L. and Schinco,F.P.: Implantation of PNS
graft inhibits the induction of nitric oxide synthase
and enhances the survival of spinal motoneurons due to
root avulsion. Exp.Neurol. 129:335-339, 1994.
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Scott,D.E., Wu,W., Slusser,J. and Depto,A.:
Neuronal regeneration and neuronal migration following
injury: I. the endocrine hypothalamus and
neurohypophyseal system. Exp. Neurol. 131:23-38, 1995.
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Wu,Y., Li,Y., Liu,H. and Wu,W.*: Induction of
nitric oxide synthase and motoneuron death in newborn
and early postnatal rats following spinal root avulsion.
Neurosci. Lett. 194:109-112, 1995.
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Li,L., Wu,W., Oppenheim,R.W., Lin,L.F.H., Lei,M.,
and Houenou,L.J.: Rescue of adult mouse motoneurons from
injury-induced cell death by a glial cell line-derived
neurotrophic factor (GDNF). P. Natl. Acad. Sci. USA.
92:9771-9775, 1995.
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Wu, W.*:
Potential roles of gene expression changes in adult rat
spinal motoneurons following axonal injury: A comparison
among c-jun, low affinity nerve growth factor receptor (LNGFR),
and nitric oxide synthase (NOS). Exp. Neurol.
141:190-200, 1996.
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Gu, Y.M., Spasic, Z and Wu, W.*: The effects of
remaining axons on motoneuron survival and NOS
expression following axotomy in the adult rat.
Developmental Neuroscience, 19:255-259, 1997.
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Wu, Y., Han, K., Wu, W. and Terzis, J.K.:
Expression of choline acetyltransferase within spinal
motoneurons following brachial plexus avulsion.
Restorative Neurology and Neuroscience, 11:47-54, 1997.
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Yick, L.W., Wu, W.*, So, K.F., and Wong, S.Y.:
Time course of NOS expression and neuronal death in
Clarke’s nucleus following traumatic injury in adult rat
spinal cord. Neurosci. Lett. 241:155-158,1998.
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Li,L., Houenou,L.J., Wu, W., Lei,M., Prevette,D.M.,
and Oppenheim,R.W.: Characterization of spinal
motoneuron degeneration following different types of
peripheral nerve injury in neonatal and adult mice. J.
Comp. Neurol. 396:158-168, 1998.
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Yick, L.W., Wu,W.*, and So,K.F.: Additive effect
of NOS inhibitor and neurotrophic factors on the
survival of injured Clark's neurons. NeuroReport,
10:2569-2573, 1999.
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Yick, L.W., Wu,W.*, So,K.F., and Yip,H.K.:
Peripheral nerve graft and neurotrophic factors enhance
neuronal survival and expression of nitric oxide
synthase in the Clarke's nucleus after hemisection of
the spinal cord in adult rat. Exp. Neurol. 159:131-138,
1999.
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Chai, H., Wu, W.*,
So, K.F., Prevette, D.M., Oppenheim, R.W.: Long-term
effects of a single dose of brain-derived neurotrophic
factor (BDNF) on motoneuron survival following spinal
root avulsion in the adult rat. Neurosci. Lett.
274:147-150, 1999.
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Xie, Y.Y., Yao, Z.B., Wu, W.*: Survival of
motoneurons and expression of
b-Amyloid
protein in the aged rat spinal cord. NeuroReport,
11:697-700, 2000.
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Yick, L.W., Wu, W.*, So, K-F. Shum,D.K.Y.:
Chondroitinase ABC promotes axonal regeneration of
Clarke's neurons after spinal cord injury. NeuroReport,
11:1063-1067, 2000.
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Chai,H., Wu, W.*,
So, K.F., Yip, H.: Survival and regeneration of
motoneurons in adult rats by re-implantation of ventral
root following spinal root avulsion.
NeuroReport, 11:1249-1252, 2000.
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Jin, Y., Tay, D., So, K.F., Wu, W.: Expression of
c-jun in the lateral vestibular nucleus following spinal
cord injury and peripheral nerve graft transplantation
in adult rats. J. of Neurocytology 29(2):91-97, 2000.
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Yaun, Q, Wu, W.*, So, K-F, Cheung, A, D.M.Prevette, D.M., Oppenheim, R.W.:
Effects of neurotrophic factors on motoneuron
survival following axonal injury in newborn rats.
NeuroReport, 11:2237-2241, 2000.
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Chan, Y.M., Wu, W.*, Yip, H., So, K-F, Oppenheim,
R.: Caspase inhibitors promote the survival of avulsed
spinal motoneurons in neonatal rats. NeuroReport,
12:541-545, 2001.
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Chan, Y.M., Wu, W.*, Yip, H., So, K-F.:
Development of the regenerative capacity of postnatal
axotomized rat spinal motoneurons. NeuroReport,
13:1071-1074, 2002.
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Cheung, Z.H., So, K-F, Lu, Q., Yip, H.K., Wu, W.,
Shan, J.J., Pang, P.K.T. and Chen, C.F.: Enhanced
survival and regeneration of axotomied retinal ganglion
cells by a mixture of herbal extracts. J. Neurotrauma.
19(3):369-378, 2002.
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Cheung, Z.H., Yip, H.K., Wu, W. and So, K.-F.
Axotomy induces cytochrome c release in retinal ganglion
cells. NeuroReport, 14:279-282, 2003.
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Yick, L.W., Cheung, P.T., So, K-F and Wu,W.*:
Axonal regeneration of Clarke’s neurons beyond the
spinal cord injury scar after treatment with
chondroitinase ABC. Exp. Neurol. 182:160-168, 2003.
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Chan, Y.M., Yick, L.W., Yip, H.K., So, K-F, Oppenheim,
R.W. and Wu, W.*: Inhibition of caspases promotes
long-term survival and reinnervation by axotomized
spinal motoneurons of denervated muscle in newborn rats.
Exp. Neurol. 181:190-203, 2003.
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Wu, W.*, Li, L., Yick, L-W, Chai, H., Xie,Y.Y., Yang, Y., Prevette, D.M. and
Oppenheim, R.W.: GDNF and BDNF alter the
expression of NOS, c-Jun, and p75 and prevent motoneuron
death following spinal root avulsion. J. Neurotrauma
20(6):603-612, 2003.
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Yaun, Q, Xie, Y.Y., So, K-F, Wu, W.*:
Inflammatory response of spinal motoneurons to axonal
injury in newborn rats. Dev. Neurosci. 25:72-78,
2003.
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Xie, Y.Y., Yao, Z.B., Chai, H., Wong, W.M. and
Wu, W.*:
Expression and role of low-ffinity nerve growth factor
receptor (p75) in spinal motor neurons of aged rats
following axonal injury. Dev. Neurosci. 25:65-71, 2003.
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Xie, Y.Y., Yao, Z.B., Chai, H., Wong, W.M. and Wu, W.*:
Potential roles of Alzheimer precursor protein A4 and
b-Amyloid
in the survival and function of aged spinal motor
neurons following axonal injuries. J. Neurosci. Res.
73:557-564, 2003.
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Gu, H.Y., Chai, H., Zhang, J.Y., Yao, Z.B., Zhou, L.H.,
Bruce, I. and Wu, W.*:
Survival, regeneration and functional recovery of
motoneurons in adult rats by reimplantation of ventral
root following spinal root avulsion. Europ. J. Neurosci.
19:2123-2131, 2004.
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Yick,L-W., So, K-F, Cheung, P.T. and Wu, W.*:
Lithium chloride reinforces the regeneration-promoting
effect of chondroitinase ABC on rubrospinal neurons
after spinal cord injury. J. of Neurotrauma,
21(7):932-943, 2004.
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Wu, W.*,
Chai, H., Zhang J.Y., Gu, H.Y., Xie, Y.Y. and Zhou, L.H.:
Delayed implantation of a peripheral nerve graft reduces
motoneuron survival but does not affect regeneration
following spinal root avulsion in adult rats. J. of
Neurotrauma, 21(8): 1050-1058, 2004.
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Cheung, Z.H., Chan, Y.M., Siu, K.W., Yip, H.K., Wu,
W., Leung, C.P., and So, K.F.: Regulation of caspase
activation in axotomized retinal ganglion cells. Mol.
Cell. Neurosci. 25:383-393, 2004.
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Zhang, X.M., Ng, H.L., Tanner, J.A., Wu, W.,
Copeland, N.G., Jenkins, N.A. and Huang, J.D.: Highly
restricted expression of Cre recombinase in cerebellar
Purkinje cells. Genesis, 40:45-51, 2004.
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Gu, H.Y., Chai, H., Zhang, J.Y., Yao, Z.B., Zhou, L.H.,
Wong, W.M., Bruce, I. and Wu, W.*:
Survival, regeneration and functional recovery of
motoneurons after delayed reimplantation of ventral root
in adult rat. Exp. Neurol. 192:89-99, 2005.
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Zeng Y.S., Ding, Y., Wu, L.Z., Guo, J.S., Li, H.B. and
Wu, W.*:
Co-transplantation of Schwann cells promotes the
survival and differentiation of neural stem cells
transplanted into the injured spinal cord. Dev. Neurosci.
27:20-26, 2005.
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Zhang, C.W., Lu, Q., You, S.W., Zhi, Y., Yip, H.K.,
Wu, W., So, H.F., Cui, Q.: CNTF and BDNF have
similar effects on retinal ganglion cell survival but
differential effects on nitric oxide synthase expression
soon after optic nerve injury. IOVS, 46:1497-1503, 2005.
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Zhou, LH and Wu, W.*:
Antisense oligos
to neuronal
nitric oxide synthase aggravate
motoneuron death induced by spinal root avulsion in
adult rat.
Exp. Neurol. 197:84-92, 2006.
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Yuan, QJ, Scott, DE, So,KF, Wu, W.*:
Developmental changes of nitric oxide synthase
expression in the rat hypothalamo-neurohypophyseal
system. Anat. Record. 288A:36-45,
2006.
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Yang, Y., Xie, Y.Y., Chai, H., Fan, F., Liu, S.H., Liu,
H., Bruce, I., and Wu, W.*: Microarray Analysis
of Gene Expression Patterns in Adult Spinal Motoneurons
after Different types of Axonal Injuries. Brain Res.
1075:1-12, 2006.
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Yuan, QJ; Hu, B; So, KF; Wu, W.*:
Age-related reexpression of p75 in axotomized
motoneurons.
NeuroReport, 17:711-715, 2006. .
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Zhou, LH and Wu, W.*: Survival of injured spinal
motoneurons in adult rat upon treatment with glial cell
line-derived neurotrophic factorat 2 weeks but not at 4
weeks after root avulsion.
J. of Neirotrauma 23:920-927, 2006.
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Chu, T.H., and Wu, W.*:
Nitric oxide synthase inhibitor attenuates number of
regenerating spinal motoneurons in adult rats.
NeuroReport,
17:969-973, 2006.
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Yuan, Q., Scott, D.E., So, K.F. and Wu, W.*:
The response of magnocellular neurons of the
hypothalamo-neurohyphyseal system to hypophysectomy,
nitric oxide synthase expression as well as survival and
regeneration in developing versus adult rats. Brain Res.
1113:45-53, 2006.
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Ji BX, Li MW, Wu W, Yick LW, Lee XH, Shao ZH,
Wang J, So KF, McCoy JM, Pepinsky RB, Mi S and Relton JK:
LINGO-1 antagonist promotes functional recovery and
axonal sprouting after spinal cord injury. Molecular and
Cellular Neuroscience, 33:311-320, 2006.
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Ellis-Behnke RG, Liang YX, Tay DKC, Kau PWF, Schneider
GE, Zhang S, Wu W, So KF. Nano hemostat solution:
immediate hemostasis at the nanoscale. Nanomedicine:
Nanotechnology, Biology, and Medicine 2:207-215, 2006.
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Zeng, YS, Nie
JH,
Zhang
W,
Chen SJ and Wu W*:
Morphine acts via µ-opioid receptors to enhance spinal
regeneration and synaptic reconstruction of primary
afferent fibers injured by sciatic nerve crush. Brain
Res. 1130:108-113, 2007.
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Yuan, Q., Scott, D.E., So, K.F. and Wu, W.*:
Differential activation of c-fos immunoreactivity after
hypophysectomy in developing and adult rats. Anat.
Record. 290:1050-1056, 2007.
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Yuan, Q., Scott, D.E., So, K.F. and Wu, W.*:
A Subpopulation of Reactive Astrocytes at Affected
Neuronal Perikarya after Hypophysectomy in Adult Rats.
Brain Res. 1159:18-27, 2007.
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Guo JS, Zeng YS, Liang YX, Wang L, Su HX,
Wu W*.: Cyclosporine affects the proliferation and
differentiation of neural stem cells in culture.
NeuroReport, 18(9):863-868, 2007.
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Su HX, Chu TH, Wu W*: Lithium enhances
proliferation and neuronal differentiation of neural
progenitor cells in vitro and after
transplantation into the adult rat spinal cord. Exp.
Neurol. 206:296-307, 2007.
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Mi S, Hu B, Hahm K, Luo
Y, Hui SK, Yuan Q, Wong WM, Wang L, Su HX,
Chu TH, Guo JS, Zhang WM, So KF, Pepinsky B, Shao ZH,
Graff C, Garber E, Jung V, Wu XK, Wu W* LINGO-1
Antagonist Promotes Spinal Cord Remyelination and Axonal
Integrity in MOG-Induced
Experimental Autoimmune Encephalomyelitis. Nature
Medicine,
13:1228-1233, 2007.
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Mi S, Hu B, Hahm K, Luo
Y, Hui SK, Yuan Q, Wong WM, Wang L, Su HX,
Chu TH, Guo JS, Zhang WM, So KF, Pepinsky B, Shao ZH,
Graff C, Garber E, Jung V, Wu XK, Wu W*: Rodent
EAE model for the study of axon integrity and
remyelination. Nature Protocols,
DOI:10.1038/nprot.2007.389.
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Guo JS, Su HX, Zeng YS, Liang YX, Ellis-Behnke RG, So KF
and Wu W*: Reknitting the spinal cord using a
self-assembling peptide nanofiber scaffold to promote
functional recovery. Nanomedicine, 3:311-321, 2007.
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Fu QL,
Hu B,
Wu W,
Pepinsky RB,
Mi S and
So KF:
Blocking LINGO-1 Function Promotes Retinal Ganglion Cell
Survival Following Ocular Hypertension and Optic Nerve
Transection. Invest Ophthalmol Vis Sci. 49
(3):975-85, 2008.
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Fu QL, Wu W, Wang H, Li X, Lee VWH and So KF:
Up-regulated endogenous erythropoietin/erythropoietin
receptor system and exogenous erythropoietin rescue
retinal ganglion cells after chronic ocular
hypertension. Cell Mol Neurobiol 28:317-329, 2008.
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Cheung ZH, Leung MCP, Yip HK, Wu W, Siu FKW and
So KF: A neuroprotective herbal mixture inhibits
caspase-3-independent apoptosis in retinal ganglion
cells. Cell Mol Neurobiol. 28:137-155, 2008.
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Chu TH, Du Y and Wu W*:
Motor nerve graft is better than sensory nerve graft for
survival and regeneration of motoneurons after spinal
root avulsion in adult rats.
Exp. Neurol.
212:562-565, 2008.
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Wang L, Hu B, Wong WM, Lu P, Wu W and Xu XM:
Glial and axonal responses in areas of Wallerian
degeneration of the corticospinal and ascending tracts
after spinal cord dorsal funiculotomy. Neuropathology,
doi:10.1111/j.1440-1789.2008.00969.x, 2008.
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Su HX, Zhang WM, Guo JS, Guo AC, Yuan QJ, Wu W*.
Neural progenitor cells enhance the survival and axonal
regeneration of injured motoneurons after
transplantation into the avulsed ventral horn of adult
rats. J. Neurotrauma. 26(1):67-80, 2009.
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Chu TH, Li SY, Guo A, Wong WM, Yuan Q, Wu W*.
Implantation of Neurotrophic Factor-treated Sensory
Nerve Graft Enhances Survival and Axonal Regeneration of
Motoneurons after Spinal Root Avulsion. J Neuropatho &
Exp Neurol 68(1):94-101, 2009.
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Su HX, Zhang WM, Guo JS, Guo AC, Yuan QJ, Wu W*.
Lithium enhances the neuronal differentiation of neural
stem cells in vitro and after transplantation into the
avulsed ventral horn of adult rats through the secretion
of brain-derived neurotrophic factor. J. Neurochemistry.
108:1385-1398, 2009.
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Guo JS, Leung KK, Su HX, Yuan QJ, Wang L, Chu TH,
Wenming Zhang WM, Pu KS, Ng KP, Wong WM, Dai X, Wu W*.
Self assembling peptide nanofiber scaffold promotes the
reconstruction of acute injured brain.
Nanomedicine, (in press), 2009.
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