LIU Kai-xin,LI Yan,HUANG Shi-mei,et al.Effect of Modified Xiaoyaosan on Dopamine Transporter in Rats with Hyperprolactinemia[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(04):51-57.
LIU Kai-xin,LI Yan,HUANG Shi-mei,et al.Effect of Modified Xiaoyaosan on Dopamine Transporter in Rats with Hyperprolactinemia[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(04):51-57. DOI: 10.13422/j.cnki.syfjx.20220302.
Effect of Modified Xiaoyaosan on Dopamine Transporter in Rats with Hyperprolactinemia
To investigate the effect of modified Xiaoyaosan on central dopamine transporter (DAT)/protein kinase C (PKC)-dependent signaling pathway in hyperprolactinemia (HPRL) rats.
Method
2
HPRL rat model was established by chronic combined stress combined with intraperitoneal injection of metoclopramide. Ninety-six rats were randomly divided into six groups, namely, the blank group, model group, western medicine (bromocriptine, 0.001 g·kg
-1
·d
-1
) group, and high-, medium-, and low-dose (60, 30, 15 g·kg
-1
·d
-1
) modified Xiaoyaosan groups. After 14 days of administration, the serum prolactin (PRL) content was detected by enzyme-linked immunosorbent assay, the expression of tyrosine hydroxylase (TH) in rat hypothalamus by immunohistochemistry, and the protein expression of DAT and PKC in hypothalamus by Western blot.
Result
2
Compared with the blank group, the model group exhibited significantly increased PRL and DAT (
P
<
0.01), but decreased TH and PKC (
P
<
0.01). Compared with the model group, bromocriptine and modified Xiaoyaosan at the medium dose significantly lowered the content of PRL (
P
<
0.01). The modified Xiaoyaosan at the medium and high doses elevated the expression of TH (
P
<
0.05,
P
<
0.01). The expression levels of PKC in the medium- and low-dose modified Xiaoyaosan groups and the western medicine group were significantly increased (
P
<
0.01), while the DAT expression levels in the high-, medium-, and low-dose modified Xiaoyaosan groups and the western medicine group were decreased (
P
<
0.01).
Conclusion
2
The modified Xiaoyaosan is able to up-regulate the expression of TH and down-regulate the level of DAT through PKC-dependent signaling pathway, thereby regulating the PRL.
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