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1.广西壮族自治区中医药研究院,南宁 530022
2.广西中药质量标准研究重点实验室,南宁 530022
3.广西医科大学,南宁 530022
何俊慧,硕士,助理研究员,从事中药药理学研究,Tel:0771-5869102,E-mail:hejunhui202109@163.com
韦桂宁,硕士,主任药师,从事中药药理学研究,Tel:0771-5869102,E-mail:weiguining2004@163.com
收稿日期:2021-12-30,
网络出版日期:2022-03-09,
纸质出版日期:2022-09-05
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何俊慧,朱涪翠,李冬梅等.基于NF-κB/NLRP3通路探究十大功劳叶提取物对抑郁症大鼠炎症的影响及机制[J].中国实验方剂学杂志,2022,28(17):67-74.
HE Junhui,ZHU Fucui,LI Dongmei,et al.Effect of Mahonia bealei LeafExtract on Inflammation in Depression of Rats via NF-κB/NLRP3 Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(17):67-74.
何俊慧,朱涪翠,李冬梅等.基于NF-κB/NLRP3通路探究十大功劳叶提取物对抑郁症大鼠炎症的影响及机制[J].中国实验方剂学杂志,2022,28(17):67-74. DOI: 10.13422/j.cnki.syfjx.202201005.
HE Junhui,ZHU Fucui,LI Dongmei,et al.Effect of Mahonia bealei LeafExtract on Inflammation in Depression of Rats via NF-κB/NLRP3 Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(17):67-74. DOI: 10.13422/j.cnki.syfjx.202201005.
目的
2
研究十大功劳叶提取物的抗抑郁作用及其潜在机制。
方法
2
经HPLC-MS/MS手段鉴定分离十大功劳叶提取物主要化学成分。通过小鼠行为绝望实验初步探究十大功劳叶提取物的潜在抗抑郁作用,将小鼠随机分为空白组、氟西汀组(10 mg·kg
-1
)、十大功劳叶提取物组(10、2.5 g·kg
-1
),连续灌胃给药12 d,于末次给药1 h后,测定小鼠游泳不动时间和悬尾不动时间。进而采用利血平(0.5 mg·kg
-1
)腹腔注射诱导大鼠抑郁模型探究其抗抑郁作用机制,分组如下,分别为正常组、模型组、氟西汀组(1.8 mg·kg
-1
)、十大功劳叶提取物组(10、2.5 g·kg
-1
),每天灌胃给药1次,连续10 d,末次给药1 h后,做行为学检查;酶联免疫吸附测定法(ELISA)检测大鼠血清中肿瘤坏死因子-
α
(TNF-
α
)和白细胞介素-6(IL-6)的水平;免疫组化法测定大鼠脑组织中IL-6和IL-1
β
蛋白的表达水平;蛋白免疫印迹法(Western blot)检测大鼠海马组织中核转录因子-
κ
B(NF-
κ
B)和NOD样受体蛋白3(NLRP3)蛋白的表达。
结果
2
从十大功劳叶提取物中分离鉴定得到7种化学成分,主要为生物碱。小鼠行为绝望实验结果显示,与空白组比较,十大功劳叶提取物高剂量组小鼠游泳不动时间和悬尾不动时间明显缩短(
P
<
0.05,
P
<
0.01)。大鼠抑郁实验结果显示,与正常组比较,模型组中大鼠上睑下垂现象明显增加(
P
<
0.05),圈内保留时间显著延长(
P
<
0.01);大鼠血清中IL-6、TNF-
α
水平明显升高(
P
<
0.05);大鼠脑组织中IL-6、IL-1
β
免疫组织化学染色阳性表达率显著升高(
P
<
0.01);大鼠海马组织中NF-
κ
B、NLRP3蛋白表达显著升高(
P
<
0.01)。与模型组比较,十大功劳叶提取物高剂量明显缩短大鼠在圈内保留时间(
P
<
0.05),降低大鼠血清中IL-6、TNF-
α
水平(
P
<
0.05,
P
<
0.01),降低大鼠脑组织中IL-6、IL-1
β
免疫组织化学染色阳性表达率(
P
<
0.01);降低大鼠海马组织中NF-
κ
B、NLRP3蛋白表达(
P
<
0.05,
P
<
0.01)。
结论
2
十大功劳叶提取物具有明显的抗抑郁作用,且能改善利血平诱导的抑郁大鼠炎症反应,其机制可能与抑制NF-
κ
B/NLRP3信号通路有关。
Objective
2
To investigate the effect of
Mahonia bealei
leaf extract on depression of rats and the underlying mechanism.
Method
2
The chemical constituents of the extract were analyzed by HPLC-MS/MS. Forced swimming test and tail suspension test were carried out to estimate the antidepressant effect. The mice were randomly assigned into the following groups: blank group, positive control group (fluoxetine, 10 mg·kg
-1
), and
Mahonia bealei
leaf extract groups (10, 2.5 g·kg
-1
). The gavage lasted for 12 days and the immobility time of the mice in the tests was recorded 1 h after the last administration. Furthermore, to explore the underlying mechanism of the antidepressant effect, we established the rat depression model by intraperitoneal injection with reserpine (0.5 mg·kg
-1
). Rats were grouped as follows: blank group, model group, positive control group (fluoxetine, 1.8 mg·kg
-1
), and
Mahonia bealei
leaf extract groups (10, 2.5 g·kg
-1
). The gavage, once a day, lasted for 10 consecutive days. The depression of rats was detected by behavioral tests 1 h after the last administration. The levels of interleukin-6 (IL-6) and tumor necrosis factor-
α
(TNF-
α
) in serum of rats were detected by enzyme-linked immunosorbent assay (ELISA). The protein expression of IL-6 and interleukin-1
β
(IL-1
β
) in brain tissue was detected by immunohistochemical staining. The protein levels of nuclear transcription factor-
κ
B (NF-
κ
B) and NOD-like receptor protein 3 (NLRP3) in hippocampus of rats were detected by Western blot.
Result
2
Seven chemical constituents, mainly alkaloids, were identified from the extract. Compared with the blank group,
Mahonia bealei
leaf extract shortened the immobility time of mice in tail suspension and forced swimming tests. Compared with the blank group, the modeling of rat depression increased the blepharoptosis incidence and retention time in circles (
P
<
0.05,
P
<
0.01), elevated the levels of IL-6 and TNF-
α
in serum (
P
<
0.05), and up-regulated the protein levels of IL-6, IL-1
β
, NF-
κ
B, and NLRP3 in brain tissues (
P
<
0.01). Compared with the model group, high dose of
Mahonia bealei
leaf extract shortened the retention time in circles (
P
<
0.05), lowered the levels of IL-6 and TNF-
α
in serum (
P
<
0.05,
P
<
0.01), and down-regulated the protein levels of IL-6, IL-1
β
, NF-
κ
B, and NLRP3 (
P
<
0.01) in brain tissues.
Conclusion
2
Mahonia bealei
leaf extract had significant antidepressant effect and alleviated the inflammatory response in reserpine-induced rat model of depression, the mechanism of which may be related to the inhibition of NF-
κ
B/NLRP3 signaling pathway.
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