Hong-yan WU, Yu-qi SHI, Chun-yan ZHU, et al. Wutoutang Modulation Hippocampal BDNF/TrkB Pathway to Relieve Pain-emotion Co-curation[J]. Chinese journal of experimental traditional medical formulae, 2020, 26(1): 24-30.
DOI:
Hong-yan WU, Yu-qi SHI, Chun-yan ZHU, et al. Wutoutang Modulation Hippocampal BDNF/TrkB Pathway to Relieve Pain-emotion Co-curation[J]. Chinese journal of experimental traditional medical formulae, 2020, 26(1): 24-30. DOI: 10.13422/j.cnki.syfjx.20200136.
Wutoutang Modulation Hippocampal BDNF/TrkB Pathway to Relieve Pain-emotion Co-curation
To explore the mediating effect of Wutoutang (WTT) on brain-derived neurotrophic factor/tropomyosin receptor kinase B (BDNF/TrkB) pathway in hippocampus and to clarify the mechanism of therapeutic action of WTD on pain-emotion comorbidity by inhibiting neuropathic pain (NP) preliminarily.
Method:
2
The mice were divided into sham group
spinal cord ligation (SNL) group
Wutoutang (WTT) group
Wutoutang-ANA12 antagonist (WTT-ANA12) group
pregabalin (PGB) group
Fluoxetine Hydrochloride (FLU) group randomly. Mice were fixed with the drug delivery cannula for hippocampal CA3.The L5 spinal cord of mice were tightly ligated but sham group (only exposed). During the 10-16
th
day after surgery
WTT
WTT-ANA12 groups were gavaged with 126 mg·kg
-1
WTT
PGB and FLU groups were respectively given 25 mg·kg
-1
PGB and 3 mg·kg
-1
FLU
sham and SNL groups were given the physiological saline once a day. Then
50 nmol·L
-1
ANA12 were given to the hippoicampal CA3 of the WTT-ANA12 mice by drug delivery cannula
and physiological saline were given to the others on the 10-16
th
day after surgery. Mechanical pain were detected by Von Frey tests
anxiety and depression behaviors were separately detected by the open field and the tail tailing experiments
while the morphology of CA3 pyramidal neurons were qualified by the Golgi-staining.
Result:
2
Compared with sham group
significant decreases of the mechanical pain thresholds
decreases of the duration time in the open field
as well as the increases of the no-struggling time during the tail-suspension were detected in the SNL mice(
P
<
0.01). In addition
as illustrated by the Golgi-staining
the atrophy of hippocampal pyramidal neurons were found in SNL mice as compared with sham(
P
<
0.05
P
<
0.01). On the contrary
as compared to the SNL
significant increases of the mechanical pain thresholds
increases of the duration time in the open field
the decreases of the no-struggling time during the tail-suspension(
P
<
0.01)
as well as the morphological improvements of the hippocampal CA3 pyramidal neurons were detected in the WTT mice. Furthermore
after 7 d hippocampal injections
There is no significant distinction of the mechanical pain thresholds
the duration time in the open field
the no-struggling time during the tail-suspension
as well as the atrophy of hippocampal neurons were detected in the WTT-ANA12 groups as compared with SNL.
Conclusion:
2
The data suggested that the effective inhibition of WTT on SNL-induced vertebral neuron injury in hippocampus CA3 and pain-emotion disorder
which might attribute to it' s regulation of BDNF/TrkB pathway in hippocampus.
关键词
Keywords
references
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Related Author
Hong-yan WU
Yu-qi SHI
Jia-hao LI
Chun-yan ZHU
Na LIN
Yu-qi SHI
Hong-yan WU
Na LIN
Related Institution
Institute of Chinese Materia Medica,China Academy of Chinese Medical Sciences
Guangzhou University of Chinese Medicine
Heilongjiang University of Chinese Medicine
Graduate School of Heilongjiang University of Chinese Medicine