1.Research progress of red light therapy for dry eye and visual fatigue
Yutong XIE ; Siyu JIA ; Jiamin GAO ; Ruofan LIU ; Meiling LI ; Jiangying LI ; Xi LUO ; Xiaonan LI ; Rong YAN ; Hongbo LI
International Eye Science 2026;26(4):636-640
Dry eye disease(DED)is a common ocular surface disorder worldwide, primarily characterized by a loss of homeostasis of the tear film, and frequently associated with meibomian gland dysfunction(MGD), decreased tear film stability, ocular discomfort, and visual impairment. In recent years, factors such as the widespread use of digital devices,the aging population, and environmental changes have contributed to a significant increase in its global prevalence, making it a major public health concern. Red light therapy(RLT), also known as low-level laser therapy(LLLT)or photobiomodulation(PBM), is a non-invasive treatment that utilizes low-energy red or near-infrared light to irradiate tissues. It exerts photobiomodulatory effects to promote cellular repair and functional recovery. This therapy has demonstrated considerable potential in treating various ocular conditions. Its broader clinical application could improve therapeutic outcomes, alleviate patient discomfort and financial burden, and reduce the consumption of healthcare resources, thereby yielding significant socio-economic benefits. This paper systematically reviews the multifaceted mechanisms and application prospects of RLT in managing DED, including its anti-inflammatory effects, improvement of meibomian gland function, promotion of conjunctival goblet cell repair, and alleviation of visual fatigue, aiming to provide a theoretical foundation and practical reference for its clinical adoption.
2.Analysis of co-occurrence patterns of common mental health issues among college students
YAN Yulin, LUO Miyang, LUO Jiayou, MA Suiyi, LI Jia, CHEN Xi, WANG Feng, LIU Hao
Chinese Journal of School Health 2026;47(3):379-383
Objective:
The cross sectional study aimed to identify predominant co-occurrence patterns among six common mental health issues in college students, so as to provide empirical basis for designing targeted interventions.
Methods:
From October 2024, a total of 9 837 students from 4 universities in Xiangtan City, Hunan Province, participated in the current study by multistage random cluster sampling method. Participants completed self report measures, including the Patient Health Questionnaire-9 (PHQ-9), Generalized Anxiety Disorder 7 item Scale (GAD-7), Young s Internet Addiction Diagnostic Questionnaire, the Adolescent Insomnia Symptom Self rating Scale, the Ottawa Self injury Inventory, and the Brief Community Assessment of Psychic Experiences Questionnaire. Demographic and co-occurrence characteristics were first compared using Chi square or trend Chi-square tests, followed by application of the Apriori algorithm to mine association rules for primary co-occurrence patterns.
Results:
The detection rate of co-occuring the common mental health issues was 46.44%. The detection rate was significantly higher in female than in male students (50.42%, 43.61%; χ 2=44.46) and in students from rural versus urban areas (47.22%, 44.60%; χ 2=5.67) (both P <0.05). Significant differences were observed among freshmen, sophomores, juniors, and seniors (46.63%, 48.35%, 45.05% , 43.66%, respectively; χ 2=9.22, P <0.05), although no statistically significant trend was detected ( χ 2 trend =3.75, P = 0.05 ). Association rule mining identified “anxiety + depression” “anxiety + psychotic experiences + depression” and “anxiety + sleep disorder + depression” as the combinations with the highest support. In addition, “anxiety+depression+Internet addiction+psychotic experiences =>sleep disorder (>= refered to the occurrence of the latter item under the condition that the former item occurs)” and “anxiety + depression+Internet addiction=>sleep disorder” were combinations with relatively high confidence.
Conclusions
Co-occurrence of these mental health issues among college students is high and exhibits diverse patterns. Strategies to address this burden should prioritize integrated interventions that target these specific combinations of factors.
3.Mechanism of Wumeiwan on Inhibiting Fatty Acid Metabolism Reprogramming in Prevention and Treatment of Colorectal Cancer Based on Multi-omics Analysis
Gang XIAO ; Shusen YANG ; Mingming SI ; Yanyan YANG ; Hailiang WEI ; Shuguang YAN ; Hui LUO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(9):21-30
ObjectiveTo investigate the mechanism by which Wumeiwan suppresses the development and progression of colorectal cancer(CRC) through the regulation of fatty acid metabolic reprogramming, thereby providing new experimental evidence for the prevention and treatment of CRC. MethodsA total of 120 C57BL/6 mice were randomly divided into the blank group, model group, Wumeiwan high-, medium-, and low-dose groups(54, 27, 13.5 g·kg-1), and the mesalazine group(0.01 g·kg-1), with 20 mice in each group. Except for the blank group, all mice were subjected to azoxymethane(AOM)/dextran sulfate sodium(DSS) treatment to establish an inflammation-associated CRC model. One week after AOM injection, mice in the treatment groups received intragastric administration of the designated drugs, while the blank and model groups received an equal volume of purified water, continuing until 20 d after the intervention endpoint. Hematoxylin-eosin(HE) staining was used to observe colonic histopathological alterations, and immunohistochemistry for vascular endothelial growth factor(VEGF) was performed to evaluate neovascularization and tumor invasion. Metabolomics combined with Kyoto Encyclopedia of Genes and Genomes(KEGG) and metabolite set enrichment analysis(MSEA) was applied to identify key CRC-related metabolic pathways, which were further validated by transcriptomic Gene Ontology(GO) enrichment and gene heatmap analysis. Subsequently, Western blot was performed to determine the expression levels of core proteins in these pathways, and immunofluorescence was used to analyze their localization and co-expression patterns in tissues, thereby elucidating the mechanism of Wumeiwan from multiple biological dimensions. ResultsCompared with the blank group, mice in the model group exhibited a significant decrease in body weight and a significant increase in the disease activity index(DAI) score(P<0.05), with pronounced colonic mucosal damage accompanied by aggravated tumor invasion. Compared with the model group, Wumeiwan intervention markedly improved body weight loss and reduced DAI score, attenuated mucosal injury, and significantly decreased VEGF expression level(P<0.05). Multi-omics analysis revealed that differential metabolites and genes across groups were commonly enriched in fatty acid metabolism, fatty acid biosynthesis, and other lipid-related pathways. Relative to the blank group, the model group showed significant upregulation levels of fatty acid synthesis-related genes, including sterol regulatory element-binding protein 1(SREBP1), fatty acid synthase(FASN), stearoyl-CoA desaturase 1(SCD1), as well as saturated fatty acids(P<0.05). Compared with the model group, treatment with Wumeiwan significantly reduced the expression of key genes involved in fatty acid metabolic pathways, including SREBP1, FASN, and SCD1(P<0.05). Western blot results further confirmed that proteins in this pathway were significantly elevated in the model group, whereas they were markedly downregulated following Wumeiwan treatment(P<0.05). Immunofluorescence analysis demonstrated enhanced co-localization of SREBP1 with the cancer-associated fibroblast(CAF) marker α-smooth muscle actin(SMA) in the model group, whereas this co-localization signal was attenuated after Wumeiwan intervention(P<0.05). ConclusionWumeiwan can improve survival outcomes and alleviate colonic pathological damage in CRC mice, its therapeutic mechanism may be closely associated with the regulation of fatty acid metabolic reprogramming mediated by the SREBP1/FASN/SCD1 signaling pathway.
4.Association between physical activity level and dyslipidemia among freshmen of a medical college
Yushuang LUO ; Yan WANG ; Yanli LIU ; Jin ZHANG ; Minghui HE ; Wanhong HE ; Juan WU ; Yihan GU ; Chenyang ZHENG ; WANG WANG
Journal of Public Health and Preventive Medicine 2026;37(2):170-174
Objective To investigate the association between physical activity levels and blood lipids among college freshmen, and to provide scientific evidence for the health management of college freshmen. Methods An electronic questionnaire survey on physical activity was conducted on freshmen of a university, and fasting blood biochemical indicators were detected. The International Physical Activity Questionnaire (IPAQ) short form was used to evaluate the physical activity levels of the participants. Dyslipidemia was defined as an abnormality in any one of the following serum lipid parameters: total cholesterol, triglycerides, low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), or non-high-density lipoprotein cholesterol. Binary logistic regression and stratified analyses were employed to explore the relationship between physical activity and blood lipids. Results A total of 3 401 participants were included, with an average age of 18.45 ± 0.92 years, and 60.5% were female. The prevalence of dyslipidemia was 17.7%, with a higher rate among males (22.1%) than females (14.8%). After adjusting for confounding factors related to blood lipids, high-intensity physical activity was negatively associated with the risk of elevated LDL-C among males (OR = 0.36, 95% CI: 0.13–0.99, P = 0.049). Conclusion Among freshmen at a medical college in Hubei Province, high-intensity physical activity is negatively associated with the risk of elevated LDL-C in males, but this association needs to be further confirmed by larger prospective cohort studies.
5.Material Basis of Anti-Inflammatory Efficacy and Mechanism of Action of Bushen Tongdu Prescription Based on UPLC-LTQ-Orbitrap-MS and Network Pharmacology
Yan RONG ; Lulu JING ; Hongping HOU ; Huijun WANG ; Lihua CHEN ; Yunxin CHEN ; Liang LI ; Li LIN ; Xiaoqin LUO ; Haiyu ZHAO ; Xiaolu WEI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):152-161
ObjectiveThis paper aims to investigate the material basis of the anti-inflammatory efficacy and mechanism of action of Bushen Tongdu prescription (BSTDP). MethodsThe chemical components of BSTDP and its blood-absorbed components in vivo were systematically identified by using ultra-performance liquid chromatography-linear ion trap-electrostatic field orbitrap high-resolution mass spectrometry (UPLC-LIT-Orbitrap-MS). Network pharmacology was employed to screen blood-absorbed bioactive components and potential targets of this formula. A protein-protein interaction (PPI) network of core targets was constructed to conduct enrichment analysis. Molecular docking was further utilized to verify the binding affinity between key components and targets. The inflammatory model was established and verified in vivo by using a transgenic zebrafish Tg (mpx: GFP). At three days post-fertilization (3 dpf), larvae of zebrafish were randomly assigned to blank group, model group, positive drug dexamethasone acetate group (75 μmol·L-1), and BSTDP groups with low, medium, and high doses (500, 1 000, and 2 000 mg·L-1). The distribution and quantity of neutrophils in the yolk sac region were observed under a fluorescence microscope. The mRNA expression levels of key genes in the toll-like receptor 4 (TLR4)/myeloid differentiation factor 88 (MyD88)/nuclear factor kappa-B (NF-κB) signaling pathway and inflammatory factors including interleukin (IL)-1β, IL-6, and tumor necrosis factor-α (TNF-α) were detected by Real-time quantitative polymerase chain reaction (Real-time PCR). ResultsA total of 120 chemical components were identified in BSTDP, among which 26 original components were confirmed by using serum pharmacochemical methods. A total of 227 common targets linking rheumatoid arthritis (RA) and the blood-absorbed components were screened by network pharmacology. It is suggested that pseudobrucine, vomicine, sinapine, rehmannioside, cinnamyl alcohol glycoside, and methylephedrine exert anti-inflammatory effects by acting on core targets including protein kinase B1 (Akt1), signal transducer and activator of transcription 3 (STAT3), tumor necrosis factor (TNF), TLR4, mitogen-activated protein kinase 14 (MAPK14), and phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit α (PIK3CA), thereby modulating multiple signaling pathways such as TLR4 and NF-κB. In vivo verification in zebrafish demonstrates that the maximum tolerable concentration of Bushen Tongdu Formula is 2 000 mg·L-1. Compared to those in the blank group, zebrafish in the model group showed a significantly higher number of neutrophils in the yolk sac region (P<0.01) and rising mRNA levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β (P<0.01). Compared to that in the model group, the number of neutrophils was significantly reduced in BSTDP groups with medium and high doses, as well as the dexamethasone acetate group (P<0.05, P<0.01). There was no statistically significant difference in the low dose group. The mRNA expression levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β were significantly down-regulated (P<0.05, P<0.01). ConclusionThis paper identifies the material basis of the efficacy of BSTDP, demonstrating that the formula can exert an anti-inflammatory effect through the TLR4/MyD88/NF-κB signaling pathway. The results provide scientific experimental evidence for its further clinical application.
6.Material Basis of Anti-Inflammatory Efficacy and Mechanism of Action of Bushen Tongdu Prescription Based on UPLC-LTQ-Orbitrap-MS and Network Pharmacology
Yan RONG ; Lulu JING ; Hongping HOU ; Huijun WANG ; Lihua CHEN ; Yunxin CHEN ; Liang LI ; Li LIN ; Xiaoqin LUO ; Haiyu ZHAO ; Xiaolu WEI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(10):152-161
ObjectiveThis paper aims to investigate the material basis of the anti-inflammatory efficacy and mechanism of action of Bushen Tongdu prescription (BSTDP). MethodsThe chemical components of BSTDP and its blood-absorbed components in vivo were systematically identified by using ultra-performance liquid chromatography-linear ion trap-electrostatic field orbitrap high-resolution mass spectrometry (UPLC-LIT-Orbitrap-MS). Network pharmacology was employed to screen blood-absorbed bioactive components and potential targets of this formula. A protein-protein interaction (PPI) network of core targets was constructed to conduct enrichment analysis. Molecular docking was further utilized to verify the binding affinity between key components and targets. The inflammatory model was established and verified in vivo by using a transgenic zebrafish Tg (mpx: GFP). At three days post-fertilization (3 dpf), larvae of zebrafish were randomly assigned to blank group, model group, positive drug dexamethasone acetate group (75 μmol·L-1), and BSTDP groups with low, medium, and high doses (500, 1 000, and 2 000 mg·L-1). The distribution and quantity of neutrophils in the yolk sac region were observed under a fluorescence microscope. The mRNA expression levels of key genes in the toll-like receptor 4 (TLR4)/myeloid differentiation factor 88 (MyD88)/nuclear factor kappa-B (NF-κB) signaling pathway and inflammatory factors including interleukin (IL)-1β, IL-6, and tumor necrosis factor-α (TNF-α) were detected by Real-time quantitative polymerase chain reaction (Real-time PCR). ResultsA total of 120 chemical components were identified in BSTDP, among which 26 original components were confirmed by using serum pharmacochemical methods. A total of 227 common targets linking rheumatoid arthritis (RA) and the blood-absorbed components were screened by network pharmacology. It is suggested that pseudobrucine, vomicine, sinapine, rehmannioside, cinnamyl alcohol glycoside, and methylephedrine exert anti-inflammatory effects by acting on core targets including protein kinase B1 (Akt1), signal transducer and activator of transcription 3 (STAT3), tumor necrosis factor (TNF), TLR4, mitogen-activated protein kinase 14 (MAPK14), and phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit α (PIK3CA), thereby modulating multiple signaling pathways such as TLR4 and NF-κB. In vivo verification in zebrafish demonstrates that the maximum tolerable concentration of Bushen Tongdu Formula is 2 000 mg·L-1. Compared to those in the blank group, zebrafish in the model group showed a significantly higher number of neutrophils in the yolk sac region (P<0.01) and rising mRNA levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β (P<0.01). Compared to that in the model group, the number of neutrophils was significantly reduced in BSTDP groups with medium and high doses, as well as the dexamethasone acetate group (P<0.05, P<0.01). There was no statistically significant difference in the low dose group. The mRNA expression levels of TLR4, MyD88, NF-κB, TNF-α, IL-6, and IL-1β were significantly down-regulated (P<0.05, P<0.01). ConclusionThis paper identifies the material basis of the efficacy of BSTDP, demonstrating that the formula can exert an anti-inflammatory effect through the TLR4/MyD88/NF-κB signaling pathway. The results provide scientific experimental evidence for its further clinical application.
7.Banxia Xiexin Tang Ameliorates Cognitive Dysfunction in Rat Model of Vascular Dementia via AGE/RAGE Pathway
Shuzhi LIANG ; Zhongmin ZHAO ; Suyu HOU ; Dandan LUO ; Yan ZHANG ; Xijian LIU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):10-21
ObjectiveTo explore the mechanism by which Banxia Xiexin Tang (BXT) regulates the advanced glycation end products (AGE)/receptor for advanced glycation end products (RAGE) signaling pathway to reduce neuroinflammatory responses and ameliorate cognitive dysfunction in the rat model of vascular dementia (VD). MethodsThe components of BXT were detected by ultra performance liquid chromatography-quadrupole -orbitrap-tandem mass spectrometry(UPLC-Q-Orbitrap-MS/MS), and the core components and key action pathways were screened out by network pharmacology and molecular docking. Sixty SPF-grade male SD rats were randomly allocated into the sham and modeling groups by the random number table method. The VD model was replicated by the modified bilateral occlusion of the common carotid arteries (2-VO) method. The successfully modeled rats were randomly allocated into the model, low-, medium-, and high-dose (3.748 5, 7.497, 14.994 g·kg-1) BXT (BXT-L, BXT-M, and BXT-H), and nimodipine (NMP, 0.002 7 g·kg-1) groups according to the random number table method. The rats in the drug intervention groups were administrated with corresponding drugs by gavage, and the sham and model groups received the same amount of normal saline for 14 consecutive days. The Morris water maze, Y-maze, and new object recognition experiments were conducted to evaluate the cognitive dysfunction of rats. Hematoxylin-eosin (HE) staining was used to evaluate the histopathological changes of the hippocampal tissue in rats. The mRNA levels of AGE, RAGE, and phosphorylated nuclear factor-kappa B p65 (p-NF-κB p65) in the hippocampal tissue of rats were determined by Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR). The expression of related proteins in the AGE/RAGE pathway in the hippocampal tissue of rats was determined by Western blot and immunohistochemistry (IHC). The levels of neurotransmitters and inflammatory mediators in the rat serum were measured by enzyme-linked immunosorbent assay (ELISA). ResultsThe chemical components of BXT were detected by UPLC-Q-Orbitrap-MS/MS. Network pharmacology and molecular docking identified the AGE/RAGE pathway as the key pathway. The results of the water maze, Y maze, and novel object recognition tests showed that compared with the sham group, the model group demonstrated prolonged successful latency and decreases in number of platform crossings, alternation rate, number of entries into the new arm, preference index, and discrimination index (P0.01). Compared with the model group, the BXT-H and BXT-M groups showed shortened successful latency (P0.01) and increases in number of platform crossings (P0.05), alternation rate (P0.01), number of entries into the new arm (P0.05), preference index (P0.01), and discrimination index (P0.01). HE results showed that compared with the sham group, the cells of model rats were loosely and disorderly arranged, and the nuclei were condensed. Compared with the model group, the pathological changes of the hippocampus in the BXT group were mitigated. Real-time PCR results showed that compared with the sham group, the model group presented up-regulated mRNA levels of AGE, RAGE, and p-NF-κB p65 in the hippocampus (P0.01), and compared with the model group, the BXT-H and BXT-M groups showcased down-regulated mRNA levels of AGE, RAGE, and p-NF-κB p65 (P0.01). Western blot results showed that compared with the sham group, the model group presented up-regulated expression of AGE, RAGE, p-NF-κB p65, and tumor necrosis factor-α (TNF-α) (P0.05), and compared with the model group, the BXT-H group presented down-regulated expression of AGE, RAGE, p-NF-κB p65, and TNF-α (P0.05). IHC results showed that compared with the sham group, the model group had increased expression of RAGE (P0.01), and compared with the model group, the BXT-H and BXT-M groups had reduced expression of RAGE (P0.01). ELISA results showed that compared with the sham group, the model group exhibited elevated levels of TNF-α and Interleukin-1β (IL-1β) and declined levels of acetylcholine (ACh) and dopamine (DA) in the serum (P0.01). Compared with the model group, the BXT-L, BXT-M, and BXT-H groups showed lowered levels of TNF-α and IL-1β in the serum (P0.05) and elevated levels of ACh and DA (P0.05). ConclusionBXT may ameliorate cognitive dysfunction in the rat model of VD by down-regulating the AGE/RAGE signaling pathway, reducing neuroinflammatory responses, and regulating neurotransmitter levels.
8.Herbal Textual Research on Inulae Flos in Famous Classical Formulas
Caixia LIU ; Yue HAN ; Yanzhu MA ; Lei GAO ; Sheng WANG ; Yan YANG ; Wenchuan LUO ; Ling JIN ; Jing SHAO ; Zhijia CUI ; Zhilai ZHAN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):210-221
In this paper, by referring to ancient and modern literature, the textual research of Inulae Flos has been conducted to clarify the name, origin, production area, quality evaluation, harvesting, processing and others, so as to provide reference and basis for the development and utilization of famous classical formulas containing this herb. After textual research, it could be verified that the medicinal use of Inulae Flos was first recorded in Shennong Bencaojing of the Han dynasty. In successive dynasties, Xuanfuhua has been taken as the official name, and it also has other alternative names such as Jinfeicao, Daogeng and Jinqianhua. The period before the Song and Yuan dynasties, the main origin of Inulae Flos was the Asteraceae plant Inula japonica, and from the Ming and Qing dynasties to the present, I. japonica and I. britannica are the primary source. In addition to the dominant basal species, there are also regional species such as I. linariifolia, I. helianthus-aquatili, and I. hupehensis. The earliest recorded production areas in ancient times were Henan, Hubei and other places, and the literature records that it has been distributed throughout the country since modern times. The medicinal part is its flower, the harvesting and processing method recorded in the past dynasties is mainly harvested in the fifth and ninth lunar months, and dried in the sun, and the modern harvesting is mostly harvested in summer and autumn when the flowers bloom, in order to remove impurities, dry in the shade or dry in the sun. In addition, the roots, whole herbs and aerial parts are used as medicinal materials. In ancient times, there were no records about the quality of Inulae Flos, and in modern times, it is generally believed that the quality of complete flower structure, small receptacles, large blooms, yellow petals, long filaments, many fluffs, no fragments, and no branches is better. Ancient processing methods primarily involved cleaning, steaming, and sun-drying, supplemented by techniques such as boiling, roasting, burning, simmering, stir-frying, and honey-processing. Modern processing focuses mainly on cleaning the stems and leaves before use. Regarding the medicinal properties, ancient texts describe it as salty and sweet in taste, slightly warm in nature, and mildly toxic. Modern studies characterize it as bitter, pungent, and salty in taste, with a slightly warm nature. Its therapeutic effects remain consistent across eras, including descending Qi, resolving phlegm, promoting diuresis, and stopping vomiting. Based on the research results, it is recommended that when developing famous classical formulas containing Inulae Flos, either I. japonica or I. britannica should be used as the medicinal source. Processing methods should follow formula requirements, where no processing instructions are specified, the raw products may be used after cleaning.
9.Traditional Chinese Medicine Against Insomnia by Regulating PI3K/Akt Signaling Pathway: A Review
Suyu HOU ; Dandan LUO ; Xiangye GAO ; Yan ZHANG ; Xijian LIU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):284-293
Insomnia is a sleep disorder characterized by difficulty in falling asleep, sleep maintenance disorder and impaired daytime function. Its pathological mechanism involves multiple factors such as nerve excitability, circadian rhythm, cell apoptosis, oxidative stress injury. As a classical tyrosine kinase signaling pathway, phosphatidylinositol 3-kinase/protein kinase B(PI3K/Akt) triggers Akt phosphorylation cascade, inducing inflammatory response, apoptosis, autophagy, oxidative damage, nerve excitability, and circadian rhythm imbalance. Traditional Chinese medicine(TCM) can improve sleep by targeting the PI3K/Akt pathway. Based on this, this paper systematically reviews the research progress on the regulation of PI3K/Akt pathway by traditional Chinese medicine(TCM) for insomnia at home and abroad. These drugs can regulate neuronal excitability by regulating the PI3K/Akt pathway, affect the circadian rhythm, alleviate inflammation, apoptosis, autophagy and oxidative stress, and thus regulate sleep-wake. Furthermore, literature review indicates that the PI3K/Akt signaling pathway may represent a specific pathway underlying phlegm-turbidity disturbing the upper Jiao-type insomnia.
10.Banxia Xiexin Tang Ameliorates Cognitive Dysfunction in Rat Model of Vascular Dementia via AGE/RAGE Pathway
Shuzhi LIANG ; Zhongmin ZHAO ; Suyu HOU ; Dandan LUO ; Yan ZHANG ; Xijian LIU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(3):10-21
ObjectiveTo explore the mechanism by which Banxia Xiexin Tang (BXT) regulates the advanced glycation end products (AGE)/receptor for advanced glycation end products (RAGE) signaling pathway to reduce neuroinflammatory responses and ameliorate cognitive dysfunction in the rat model of vascular dementia (VD). MethodsThe components of BXT were detected by ultra performance liquid chromatography-quadrupole -orbitrap-tandem mass spectrometry(UPLC-Q-Orbitrap-MS/MS), and the core components and key action pathways were screened out by network pharmacology and molecular docking. Sixty SPF-grade male SD rats were randomly allocated into the sham and modeling groups by the random number table method. The VD model was replicated by the modified bilateral occlusion of the common carotid arteries (2-VO) method. The successfully modeled rats were randomly allocated into the model, low-, medium-, and high-dose (3.748 5, 7.497, 14.994 g·kg-1) BXT (BXT-L, BXT-M, and BXT-H), and nimodipine (NMP, 0.002 7 g·kg-1) groups according to the random number table method. The rats in the drug intervention groups were administrated with corresponding drugs by gavage, and the sham and model groups received the same amount of normal saline for 14 consecutive days. The Morris water maze, Y-maze, and new object recognition experiments were conducted to evaluate the cognitive dysfunction of rats. Hematoxylin-eosin (HE) staining was used to evaluate the histopathological changes of the hippocampal tissue in rats. The mRNA levels of AGE, RAGE, and phosphorylated nuclear factor-kappa B p65 (p-NF-κB p65) in the hippocampal tissue of rats were determined by Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR). The expression of related proteins in the AGE/RAGE pathway in the hippocampal tissue of rats was determined by Western blot and immunohistochemistry (IHC). The levels of neurotransmitters and inflammatory mediators in the rat serum were measured by enzyme-linked immunosorbent assay (ELISA). ResultsThe chemical components of BXT were detected by UPLC-Q-Orbitrap-MS/MS. Network pharmacology and molecular docking identified the AGE/RAGE pathway as the key pathway. The results of the water maze, Y maze, and novel object recognition tests showed that compared with the sham group, the model group demonstrated prolonged successful latency and decreases in number of platform crossings, alternation rate, number of entries into the new arm, preference index, and discrimination index (P<0.01). Compared with the model group, the BXT-H and BXT-M groups showed shortened successful latency (P<0.01) and increases in number of platform crossings (P<0.05), alternation rate (P<0.01), number of entries into the new arm (P<0.05), preference index (P<0.01), and discrimination index (P<0.01). HE results showed that compared with the sham group, the cells of model rats were loosely and disorderly arranged, and the nuclei were condensed. Compared with the model group, the pathological changes of the hippocampus in the BXT group were mitigated. Real-time PCR results showed that compared with the sham group, the model group presented up-regulated mRNA levels of AGE, RAGE, and p-NF-κB p65 in the hippocampus (P<0.01), and compared with the model group, the BXT-H and BXT-M groups showcased down-regulated mRNA levels of AGE, RAGE, and p-NF-κB p65 (P<0.01). Western blot results showed that compared with the sham group, the model group presented up-regulated expression of AGE, RAGE, p-NF-κB p65, and tumor necrosis factor-α (TNF-α) (P<0.05), and compared with the model group, the BXT-H group presented down-regulated expression of AGE, RAGE, p-NF-κB p65, and TNF-α (P<0.05). IHC results showed that compared with the sham group, the model group had increased expression of RAGE (P<0.01), and compared with the model group, the BXT-H and BXT-M groups had reduced expression of RAGE (P<0.01). ELISA results showed that compared with the sham group, the model group exhibited elevated levels of TNF-α and Interleukin-1β (IL-1β) and declined levels of acetylcholine (ACh) and dopamine (DA) in the serum (P<0.01). Compared with the model group, the BXT-L, BXT-M, and BXT-H groups showed lowered levels of TNF-α and IL-1β in the serum (P<0.05) and elevated levels of ACh and DA (P<0.05). ConclusionBXT may ameliorate cognitive dysfunction in the rat model of VD by down-regulating the AGE/RAGE signaling pathway, reducing neuroinflammatory responses, and regulating neurotransmitter levels.


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