电针通过PLC/IP3通路改善功能性消化不良大鼠胃肠动力障碍

doi:10.3969/j.issn.1006-5725.2024.16.014

Abstract

Abstract:

Objective This study aims to determine whether electroacupuncture regulates the phospholipase C （PLC）/inositol-1，4，5-trisphosphate （PLC/IP3） pathway in platelet-derived growth factor receptor α-positive （PDGFRα+） cells， thereby improving gastrointestinal motility disorders in functional dyspepsia （FD）. Methods 40 SD rats were randomly divided into blank group， model group， electroacupuncture group， U73122 （PLC inhibitor） group， and U73122+electroacupuncture group， with 8 rats in each group. Except for the blank group， all rats were subjected to multi-factor stress intervention to establish the FD model. After successful modeling， the U73122 group was given intraperitoneal injection of inhibitor， the electroacupuncture group was acupunctured at Zusanli and Taichong points， and the U73122+electroacupuncture group was injected with inhibitor 2 hours before acupuncture. Ten days later， gastrointestinal motility was tested； immunoblotting was used to detect the protein expression levels of PDGFRα， PLC， P-PLC， IP3； immunofluorescence was used to detect the average fluorescence density and co-localization expression of PDGFRα and PLC， IP3； electron microscope was used to observe the gap junction （GJ） situation in the gastric antrum area. Results After modeling， the gastrointestinal motility of rats was weakened， the protein expression levels of PDGFRα， PLC， and IP3 were significantly reduced， GJ widened， and cell morphology changed； compared with the model group， the gastrointestinal motility of rats in the electroacupuncture group， U73122 group， and U73122+electroacupuncture group was significantly improved， the expression levels of PDGFRα， PLC， P-PLC， IP3 increased， GJ was slightly tight， and cell morphology recovered； there was no significant difference in the expression levels of PDGFRα， PLC， P-PLC， IP3 in the gastric antrum of U73122 group and U73122 + electroacupuncture group； PDGFRα， PLC， and IP3 had fluorescence co-localization. Conclusion Electroacupuncture can improve gastrointestinal dyskinesia in FD rats by activating the PLC/IP3 pathway in PDGFRα⁺ cells.

Key words: functional dyspepsia, gastrointestinal dyskinesia, platelet-derived growth factor receptor-α-positive interstitial cells, phospholipase C, inositol-1，4，5-triphosphate

CLC Number:

R245

Deqian YANG,Qi CHEN,Shuwen JIN,Paidi. XU. Electroacupuncture improves gastrointestinal dyskinesia in rats with functional dyspepsia via PLC/IP3 pathway[J]. The Journal of Practical Medicine, 2024, 40(16): 2284-2290.

Figures/Tables 9

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References 32

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组别	例数	基线期	造模后	干预后
空白组	8	12.33 ± 2.16	63.67 ± 8.61	88.4 ± 6.35
模型组	8	15.6 ± 2.07	18.5 ± 4.64^*	56.8 ± 6.46^*
电针组	8	14.5 ± 1.73	15.46 ± 3.54^*	65.75 ± 3.86^*#
U73122组	8	12.25 ± 0.96	15.32 ± 4.18^*	54.06 ± 4.30^*
U73122+电针组	8	15.25 ± 2.87	21.5 ± 3.87^*	51.25 ± 7.27^*

组别	例数	基线期	造模后	干预后
空白组	8	36.93 ± 2.70	42.93 ± 3.07	48.42 ± 1.78
模型组	8	34.85 ± 3.56	24.30 ± 3.79^*	35.17 ± 2.65^*
电针组	8	34.79 ± 1.44	27.08 ± 5.27^*	44.95 ± 4.38^#
U73122组	8	36.8 ± 5.47	24.30 ± 2.19^*	24.40 ± 1.55^*#
U73122+电针组	8	38.13 ± 2.50	26.98 ± 3.04^*	26.70 ± 2.39^*#

组别	例数	胃排空率	小肠推进率
空白组	8	62.22 ± 9.35	63.63 ± 6.30
模型组	8	41.67 ± 9.60^?	46.32 ± 8.83^?
电针组	8	60.42 ± 12.14^#	60.30 ± 7.17^#
U73122组	8	39.33 ± 5.97^?△	42.89 ± 4.21^?△
U73122+电针组	8	42.00 ± 15.20^?△	45.80 ± 7.45^?△

组别	例数	PGDFRα	PLC	P-PLC	IP3
空白组	8	0.89 ± 0.03	0.92 ± 0.03	1.04 ± 0.03	1.06 ± 0.04
模型组	8	0.25 ± 0.02^?	0.49 ± 0.03^?	0.47 ± 0.02^?	0.53 ± 0.02^?
电针组	8	0.90 ± 0.03^#	0.79 ± 0.02^?#	0.86 ± 0.04^?#	0.73 ± 0.03^?#
U73122组	8	0.67 ± 0.03^?#△	0.21 ± 0.03^?#△	0.21 ± 0.03^?#△	0.36 ± 0.03^?#△
U73122+电针组	8	0.74 ± 0.04^?#△	0.24 ± 0.02^?#△	0.19 ± 0.02^?#△	0.47 ± 0.02^?#△

组别	例数	PGDFRα	PLC	IP3
空白组	8	108.50 ± 16.15	121.80 ± 14.07	37.67 ± 7.35
模型组	8	49.53 ± 6.756^?	38.24 ± 10.02^?	16.63 ± 5.86^?
电针组	8	103.70 ± 10.34^?#	88.54 ± 9.96^?#	30.94 ± 3.72^#
U73122组	8	58.36 ± 3.52^?#△	25.52 ± 6.31^?#△	12.20 ± 3.64^?#△
U73122+电针组	8	64.06 ± 8.11^?#△	49.39 ± 10.63^?#△	18.86 ± 5.91^?#△

Electroacupuncture improves gastrointestinal dyskinesia in rats with functional dyspepsia via PLC/IP3 pathway

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[1]	Shuwen JIN,Wei LIU,Jiabao LIU,Jianchao FAN,Yongli HAN,Li ZHOU,Paidi XU,Hongxing. ZHANG. Mechanism of electroacupuncture for gastric hypersensitivity in functional dyspepsia rats rats through NGF/TrKA/TRPV1 pathway [J]. The Journal of Practical Medicine, 2023, 39(22): 2928-2933.
[2]	LV Mi, ZHANG Kunli, SHI Zhongfei, ZHENG Yijun, LIU Ping, YIN Xiaolan, WANG Fengyun. . Current situation of overlap between FD and IBS based on Rome Ⅳ criteria [J]. The Journal of Practical Medicine, 2021, 37(9): 1213-1216.