1.河南省中医院/河南中医药大学 第二附属医院,郑州 450053
2.河南中医药大学 康复医学院,郑州 450008
3.河南中医药大学 第一附属医院,郑州 450002
徐振华,在读硕士,从事脊髓损伤、神经系统疾病的康复研究,E-mail:17836960416@163.com
李彦杰,主任中医师,硕士生导师,从事神经系统疾病功能障碍的中西医康复研究,E-mail:yanjieli2008@126.com
收稿:2024-05-20,
网络出版:2024-09-14,
纸质出版:2025-03-05
移动端阅览
徐振华,李彦杰,任亚峰等.加味春泽汤调控NF-κB/TGF-β1信号通路对脊髓损伤神经源性膀胱尿潴留大鼠膀胱纤维化及逼尿肌功能的影响[J].中国实验方剂学杂志,2025,31(05):95-103.
XU Zhenhua,LI Yanjie,REN Yafeng,et al.Effect of Modified Chunzetang on Bladder Fibrosis and Detrusor Function in Rats with Neurogenic Bladder Urinary Retention Induced by Spinal Cord Injury via Regulating NF-κB/TGF-β1 Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2025,31(05):95-103.
徐振华,李彦杰,任亚峰等.加味春泽汤调控NF-κB/TGF-β1信号通路对脊髓损伤神经源性膀胱尿潴留大鼠膀胱纤维化及逼尿肌功能的影响[J].中国实验方剂学杂志,2025,31(05):95-103. DOI: 10.13422/j.cnki.syfjx.20241438.
XU Zhenhua,LI Yanjie,REN Yafeng,et al.Effect of Modified Chunzetang on Bladder Fibrosis and Detrusor Function in Rats with Neurogenic Bladder Urinary Retention Induced by Spinal Cord Injury via Regulating NF-κB/TGF-β1 Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2025,31(05):95-103. DOI: 10.13422/j.cnki.syfjx.20241438.
目的
2
探讨加味春泽汤对脊髓损伤神经源性膀胱尿潴留大鼠膀胱纤维化及逼尿肌功能的治疗作用及其作用机制。
方法
2
该研究以改良的Hassan Shaker脊髓横断法建立脊髓损伤神经源性膀胱尿潴留模型,选取脊髓损伤行为学评分0分的大鼠进入后续实验;经选取的大鼠随机分为模型组(生理盐水灌胃)、中药低剂量组(加味春泽汤14.4 g·kg
-1
灌胃)、中药高剂量组(加味春泽汤28.8 g·kg
-1
灌胃)、阳性药组[核转录因子-
κ
B(NF-
κ
B)抑制剂二硫代氨基甲酸吡咯烷(PDTC) 0.05 g·kg
-1
腹腔注射]、联合组(PDTC 0.05 g·kg
-1
腹腔注射+加味春泽汤28.8 g·kg
-1
灌胃),每日1次,干预4周。实验结果采用BL-420s生物机能采集系统统计尿流动力学指标,离体膀胱快速称质量并采用逼尿肌牵拉实验记录各组大鼠膀胱最小收缩张力及频率;苏木素-伊红(HE)染色及马松(Masson)染色对比各组大鼠逼尿肌病理形态及组织纤维化改变;免疫组化检测
α
-平滑肌肌动蛋白(
α
-SMA)表达水平;蛋白免疫印迹法(Western blot)检测各组大鼠膀胱组织中核转录因子-
κ
B p65(NF-
κ
B p65)、核转录因子-
κ
B抑制蛋白
α
(I
κ
B
α
)、转化生长因子-
β
1
(TGF-
β
1
)、Ⅰ型胶原蛋白(ColⅠ)和Ⅲ型胶原蛋白(ColⅢ)蛋白表达;酶联免疫吸附测定法(ELISA)检测大鼠血清IL-6、IL-1
β
、TNF-
α
含量。
结果
2
与假手术组比较,模型组大鼠漏尿点压力显著降低(
P
<
0.01),膀胱质量、膀胱收缩张力、膀胱最大容量及膀胱顺应性均增加(
P
<
0.05,
P
<
0.01),HE染色可见膀胱上皮细胞排列紊乱,黏膜层及肌层中性粒细胞浸润等病理表现较为明显,固有层结构破坏,肌纤维排列紊乱,间质增宽、组织水肿较为明显;Masson染色可见模型组大鼠膀胱壁中胶原纤维沉积较多、逼尿肌纤维化程度较重,视野内逼尿肌含量有所减少;模型组大鼠膀胱组织NF-
κ
B p65、TGF-
β
1
、I
κ
B
α
、ColⅠ和ColⅢ蛋白表达显著升高(
P
<
0.01),血清IL-6、IL-1
β
及TNF-
α
含量明显升高(
P
<
0.05)。与模型组比较,加味春泽汤及阳性药组漏尿点压力明显升高(
P
<
0.05,
P
<
0.01),膀胱湿重、膀胱最小收缩张力、膀胱最大容量及膀胱顺应性明显恢复(
P
<
0.05,
P
<
0.01),HE及Mass
on可见大鼠膀胱上皮细胞排列相对整齐,膀胱固有层结构相对稳定,逼尿肌肌束排列有序,间质较窄,组织水肿程度相对较低,中药组及阳性药组大鼠膀胱逼尿肌纤维化程度减轻,阳性药组及联合组大鼠膀胱逼尿肌纤维化程度不明显;Western blot结果显示加味春泽汤及阳性药组膀胱组织NF-
κ
B p65、I
κ
B
α
、TGF-
β
1
、ColⅠ和ColⅢ的表达及血清中IL-6、IL-1
β
及TNF-
α
含量明显降低(
P
<
0.05),中药组膀胱组织相关蛋白及血清IL-6、IL-1
β
及TNF-
α
表达随给药剂量增加而明显降低;免疫组化结果提示加味春泽汤能够充分影响
α
-SMA在膀胱组织中表达。
结论
2
中药复方加味春泽汤可通过抑制脊髓损伤尿潴留大鼠膀胱组织中的胶原蛋白沉积、延缓膀胱纤维化发生发展并保护膀胱逼尿肌正常舒缩功能,其机制可能与抑制NF-
κ
B/TGF-
β
1
信号通路、减少NF-
κ
B p65、I
κ
B
α
、TGF-
β
1
、ColⅠ及ColⅢ等相关蛋白的产生,保护逼尿肌肌力有关。
Objective
2
To investigate the therapeutic effect and mechanism of modified Chunzetang on bladder fibrosis and detrusor function in rats with neurogenic bladder urinary retention induced by spinal cord injury.
Methods
2
In this study, an improved Hassan Shaker spinal cord transection method was used to establish a model of neurogenic bladder urinary retention induced by spinal cord injury, and rats with a spinal cord injury behavior score of 0 were selected for follow-up experiments. The selected rats were randomly divided into a model group (normal saline gavage), low-dose traditional Chinese medicine (TCM) group (gavage of 14.4 g·kg
-1
modified Chunzetang), high-dose TCM group (gavage of 28.8 g·kg
-1
modified Chunzetang), positive drug group [intraperitoneal injection of 0.05 g·kg
-1
nuclear transcription factor-
κ
B (NF-
κ
B) inhibitor pyrrolidine dithiocarbamate (PDTC)], and combination group (intraperitoneal injection of 0.05 g·kg
-1
PDTC + gavage of 28.8 g·kg
-1
modified Chunzetang). The rats in these groups were administrated with corresponding drugs once
a day for four weeks. The BL-420s biofunction acquisition system was used in the experiment to calculate the urodynamic indexes, and the isolated bladder was quickly weighed. The detrusor traction experiment was used to record the minimum bladder contraction tension and frequency in each group. The pathological morphology and tissue fibrosis of detrusor in each group observed by Hematoxycin-eosin (HE) staining and Masson staining were compared. The expression level of
α
-smooth muscle actin (
α
-SMA) was detected by immunohistochemistry. Western blot was used to detect the protein expression of NF-
κ
B p65, nuclear transcription factor-
κ
B suppressor protein
α
(I
κ
B
α
), transforming growth factor-
β
1
(TGF-
β
1
), type Ⅰ collagen (ColⅠ), and type Ⅲ collagen (ColⅢ) in bladder tissue of rats in each group. Enzyme-linked immunosorbent assay (ELISA) was used to detect the changes in serum levels of IL-6, IL-1
β
, and TNF-
α
.
Results
2
Compared with that in the sham operation group, the pressure at the urinary leakage point in the model group decreased (
P
<
0.01), and the bladder mass, bladder contractile tension, maximum bladder capacity, and bladder compliance increased (
P
<
0.05,
P
<
0.01). HE staining showed that the arrangement of bladder epithelial cells was disordered, and the pathological manifestations such as mucosa and myometria neutrophil infiltration were obvious. The lamina propria structure was destroyed, and the muscle fiber arrangement was disordered. The interstitial widening and tissue edema were obvious. Masson staining showed that the bladder wall of the model group had more collagen fiber deposition, and the degree of detrusor fibrosis was more severe. The content of detrusor in the visual field was reduced. At the same time,
the protein expressions of NF-
κ
B p65, TGF-
β
1
, I
κ
B
α
, ColⅠ, and ColⅢ in bladder tissue of rats in the model group were significantly increased (
P
<
0.01), and the serum levels of IL-6, IL-1
β
, and TNF-
α
were significantly increased (
P
<
0.05). Compared with that in the model group, the pressure at the urinary leakage point in the modified Chunzetang and positive drug groups was increased (
P
<
0.05), and the wet bladder weight, minimum bladder contractile tension, maximum bladder capacity, and bladder compliance were restored (
P
<
0.05,
P
<
0.01). HE and Masson showed that the bladder epithelial cells were relatively neatly arranged, and the structure of the bladder lamina propria was relatively stable. The detrusor bundles were arranged in an orderly manner, and the interstitium was narrow. The degree of tissue edema was relatively low, and the degree of bladder detrusor fibrosis in the modified Chunzetang and positive drug groups was reduced, while the degree of bladder detrusor fibrosis in the positive drug group and combination groups was not obvious. The results of Western blot showed that the expression of NF-
κ
B p65, I
κ
B
α
, TGF-
β
1
, ColⅠ, and ColⅢ in bladder tissue, as well as the serum levels of IL-6, IL-1
β
, and TNF-
α
in modified Chunzetang and positive drug groups were significantly lower, and the expression of bladder tissue-related proteins and the serum levels of IL-6, IL-1
β
, and TNF-
α
in the TCM groups decreased significantly with the increase in dose (
P
<
0.05). The results of immunohistochemistry suggested that modified Chunzetang could fully affect the expression of
α
-SMA in bladder tissue.
Conclusion
2
Modified Chunzetang can inhibit collagen deposition in bladder tissue of rats with urinary retention induced by spinal cord injury, delay the occurrence and development of bladder fibrosis, and protect the normal contractile function of bladder detrusor, and its mechanism may be related to inhibiting the NF-
κ
B/TGF-
β
1
signaling pathway, reducing the production of NF-
κ
B p65, I
κ
B
α
, TGF-
β
1
, ColⅠ, ColⅢ, and other related proteins, and protecting the muscle strength of detrusor.
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