1.The Clinical and Genetics Characteristics of Oculopharyngodistal Myopathy
Jiaxi YU ; Zhihao QUAN ; Yilei ZHENG ; Jing AN ; Jing LIU ; Qingqing WANG ; Lingchao MENG ; Meng YU ; Zhiying XIE ; Jianwen DENG ; He LYU ; Wei ZHANG ; Yun YUAN ; Zhaoxia WANG
JOURNAL OF RARE DISEASES 2026;5(2):164-174
To analyze the clinical and genetic features of oculopharyngodistal myopathy (OPDM) patients and compare the phenotypic differences among various causative genes. A total of 65 genetically confirmed OPDM patients from 43 unrelated families, who were admitted to the Department of Neurology, Peking University First Hospital between January 2008 and December 2025, were retrospectively included.The general demographic data, clinical manifestations, laboratory/auxiliary examinations, muscle pathology, and genetic test results were systematically collected and analyzed. The clinical and pathological characteristics among different OPDM subtypes were compared. Among the 65 patients(39 male and 26 female), the mean age of onset was (31.20±10.43) years (range: 14 to 63 years). The initial symptom was predominantly distal limb weakness (67.44%), which gradually progressed to involve the extraocular muscles, pharyngeal muscles, facial muscles and proximal limb muscles. Serum creatine kinase levels were mildly to moderately elevated. Muscle pathological examinations revealed rimmed vacuoles and intranuclear inclusions (within muscle fibers). The mean duration from onset to diagnosis was (12.33±7.88) years (range: 1 to 32 years). All probands had negative results on conventional next-generation whole-exome sequencing; pathogenic variants were identified through third-generation long-read sequencing or OPDM-targeted repeat-primed polymerase chain reaction(RP-PCR). Among the 43 families, OPDM2 subtype was the most common genetic subtype ( OPDM2 was the predominant subtype in this study. All subtypes share similar age of onset and muscular pathological changes, yet exhibit distinct disease progression patterns. Future multicenter prospective cohort studies are warranted to further elucidate the clinical characteristics, pathogenetic mechanisms, and prognostic differences among OPDM subtypes.
2.Progress on the hazards and control of ship-borne vector organisms
Yun-chuan HE ; Hui-ling HAO ; Bin SUN ; Hong-yan LYU ; Deng-yong HOU ; Xiao-meng REN
Acta Parasitologica et Medica Entomologica Sinica 2026;33(2):144-151
In the context of burgeoning economic trade, there has been a remarkable increase in the number of ships travelling between domestic and international ports. Inbound and outbound cargo ships, cruise liners, ferries, and other types of vessels have emerged as critical vehicles for the dispersal of vector organisms and the spread of infectious disease agents. Public health concerns associated with these vessels represent a significant threat to human welfare. In this paper, we comprehensively review the hazards posed by vector organisms on ships, the latest advances in prevention and control strategies, and proposes appropriate countermeasures. The aim is to provide effective guidance for the prevention and control of public health security issues caused by ship-borne vector organisms.
3.Effect of Yinqi Sanhuang Jiedu Decoction on Piezo1-YAP Signaling Axis and Macrophage Polarization in Mouse Model of Liver Fibrosis
Chao LEI ; Yanbo LI ; Houyan ZHANG ; Meng QIAO ; Qingjuan WU ; Wenliang LYU ; Zhifei WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):142-152
ObjectiveTo validate the therapeutic effect of Yinqi Sanhuang Jiedu decoction (YQSH) on a mouse model of carbon tetrachloride (CCl4)-induced liver fibrosis and to investigate its correlations with the Piezo-type mechanosensitive ion channel component 1 (Piezo1)-Yes-associated protein (YAP) mechanical signaling axis and macrophage polarization. MethodsFifty-four C57BL/6J mice were randomized into a blank control group, a 4-week model group, a 6-week model group, a 8-week model group, a positive drug (silymarin, 55 mg·kg-1·d-1) group, and low-, medium-, and high-dose (8.325, 16.65, 33.3 g·kg-1·d-1, respectively) YQSH groups. Except the 6-week model group (n=12), each of the other groups had 6 mice. Mice in other groups except the blank control group received intraperitoneal injections of 10% CCl4 twice weekly for the modeling of liver fibrosis. Drug interventions began one week after the initial modeling through gavage, and the blank control and model groups received 0.2 mL of normal saline via gavage. The histopathological changes and collagen deposition in the liver were observed via hematoxylin-eosin (HE), Masson's trichrome, and Sirius red staining. Serum activities of alanine aminotransferase (ALT) and aspartate aminotransferase (AST), as well as serum levels of total protein (TP), albumin (ALB), total bilirubin (TBIL), hyaluronic acid (HA), laminin (LN), procollagen type Ⅲ (PCⅢ), and collagen type Ⅳ (Ⅳ-C), were measured. The levels of tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) in the liver tissue were determined by enzyme-linked immunosorbent assay (ELISA). The protein and mRNA levels of Piezo1 and YAP1 in the liver tissue were determined by immunohistochemistry (IHC) and Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR), respectively. Co-localization of Piezo1 with YAP1, and YAP1 with inducible nitric oxide synthase (iNOS) was observed by the immunofluorescence (IF) assay. The proportions of M1-type (F4/80+CD80+) and M2-type (F4/80+CD206+) macrophages in the liver tissue were examined by flow cytometry. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses and gene set enrichment analysis (GSEA) were performed through transcriptomic sequencing. ResultsCompared with the blank control group, the model group exhibited gradually worsened liver fibrosis at the 4th, 6th, and 8th weeks. The 6- and 8-week model groups showcased inflammatory cell infiltration and collagen deposition in the liver (P<0.01) and upregulated protein levels of both Piezo1 and YAP1 (P<0.01). Compared with the model groups, treatment with YQSH improved the liver function (P<0.05, P<0.01), alleviated liver fibrosis (P<0.05, P<0.01), and reduced intrahepatic inflammatory cell infiltration and collagen deposition (P<0.01). Furthermore, the treatment downregulated the protein and mRNA levels of Piezo1 and YAP1 (P<0.05, P<0.01), lowered the levels of inflammatory factors TNF-α and IL-1β (P<0.05, P<0.01), and decreased the ratio of CD80 (M1-type)/CD206 (M2-type) macrophage proteins (P<0.01). The IF assay showed co-localization of YAP1 with Piezo1 and iNOS. Compared with the model groups, YQSH treatment downregulated the expression of Piezo1, YAP1, and iNOS (P<0.05, P<0.01). Transcriptomic analysis suggested that the anti-liver fibrosis effect of YQSH may be related to the Hippo signaling pathway (P<0.05). ConclusionThe anti-liver fibrosis effect of YQSH may be related to its inhibition of the Piezo1-YAP signaling axis and regulation of macrophage polarization.
4.Effect of Yinqi Sanhuang Jiedu Decoction on Piezo1-YAP Signaling Axis and Macrophage Polarization in Mouse Model of Liver Fibrosis
Chao LEI ; Yanbo LI ; Houyan ZHANG ; Meng QIAO ; Qingjuan WU ; Wenliang LYU ; Zhifei WANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(20):142-152
ObjectiveTo validate the therapeutic effect of Yinqi Sanhuang Jiedu decoction (YQSH) on a mouse model of carbon tetrachloride (CCl4)-induced liver fibrosis and to investigate its correlations with the Piezo-type mechanosensitive ion channel component 1 (Piezo1)-Yes-associated protein (YAP) mechanical signaling axis and macrophage polarization. MethodsFifty-four C57BL/6J mice were randomized into a blank control group, a 4-week model group, a 6-week model group, a 8-week model group, a positive drug (silymarin, 55 mg·kg-1·d-1) group, and low-, medium-, and high-dose (8.325, 16.65, 33.3 g·kg-1·d-1, respectively) YQSH groups. Except the 6-week model group (n=12), each of the other groups had 6 mice. Mice in other groups except the blank control group received intraperitoneal injections of 10% CCl4 twice weekly for the modeling of liver fibrosis. Drug interventions began one week after the initial modeling through gavage, and the blank control and model groups received 0.2 mL of normal saline via gavage. The histopathological changes and collagen deposition in the liver were observed via hematoxylin-eosin (HE), Masson's trichrome, and Sirius red staining. Serum activities of alanine aminotransferase (ALT) and aspartate aminotransferase (AST), as well as serum levels of total protein (TP), albumin (ALB), total bilirubin (TBIL), hyaluronic acid (HA), laminin (LN), procollagen type Ⅲ (PCⅢ), and collagen type Ⅳ (Ⅳ-C), were measured. The levels of tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) in the liver tissue were determined by enzyme-linked immunosorbent assay (ELISA). The protein and mRNA levels of Piezo1 and YAP1 in the liver tissue were determined by immunohistochemistry (IHC) and Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR), respectively. Co-localization of Piezo1 with YAP1, and YAP1 with inducible nitric oxide synthase (iNOS) was observed by the immunofluorescence (IF) assay. The proportions of M1-type (F4/80+CD80+) and M2-type (F4/80+CD206+) macrophages in the liver tissue were examined by flow cytometry. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses and gene set enrichment analysis (GSEA) were performed through transcriptomic sequencing. ResultsCompared with the blank control group, the model group exhibited gradually worsened liver fibrosis at the 4th, 6th, and 8th weeks. The 6- and 8-week model groups showcased inflammatory cell infiltration and collagen deposition in the liver (P<0.01) and upregulated protein levels of both Piezo1 and YAP1 (P<0.01). Compared with the model groups, treatment with YQSH improved the liver function (P<0.05, P<0.01), alleviated liver fibrosis (P<0.05, P<0.01), and reduced intrahepatic inflammatory cell infiltration and collagen deposition (P<0.01). Furthermore, the treatment downregulated the protein and mRNA levels of Piezo1 and YAP1 (P<0.05, P<0.01), lowered the levels of inflammatory factors TNF-α and IL-1β (P<0.05, P<0.01), and decreased the ratio of CD80 (M1-type)/CD206 (M2-type) macrophage proteins (P<0.01). The IF assay showed co-localization of YAP1 with Piezo1 and iNOS. Compared with the model groups, YQSH treatment downregulated the expression of Piezo1, YAP1, and iNOS (P<0.05, P<0.01). Transcriptomic analysis suggested that the anti-liver fibrosis effect of YQSH may be related to the Hippo signaling pathway (P<0.05). ConclusionThe anti-liver fibrosis effect of YQSH may be related to its inhibition of the Piezo1-YAP signaling axis and regulation of macrophage polarization.
5.Syndrome Differentiation and Treatment of Atrial Fibrillation based on the Holistic View of "Spleen-Vessels-Heart-Spirit"
Yihang DU ; Chenglin DUAN ; Xueping ZHU ; Meng LYU ; Jiafan CHEN ; Yi WEI ; Yuanhui HU
Journal of Traditional Chinese Medicine 2025;66(1):89-92
Based on the holistic view of "spleen-vessels-heart-spirit" system, this article explores the pathogenesis and progression of atrial fibrillation. It is proposed that the onset of atrial fibrillation is due to failure of the spleen to transport and disharmony of blood vessels; phlegm and blood stasis obstructing the collaterals and damage to the heart structure are the basis of its pathogenesis; the unclear mind and disorder of body and spirit are the causes of its progression. Based on the characteristics of pathological changes in different stages of the disease, it is proposed that early treatment should focus on restoring the middle jiao, clearing and promoting blood vessels, using modified Yigong Powder (异功散); during the progression of the disease, treatment should remove blood stasis and phlegm, nourish heart and protect the pulse, using self-prescribed modified Mengshi Tongmai Decoction (礞石通脉汤); meanwhile, calming mind and stabilizing palpitations, and regulating spirit should be sequentially incorporated, with self-prescribed Jiazao Ningmai Decoction (甲枣宁脉汤) or Shenying Dingji Decoction (参英定悸汤) and modified as appropriate. Clinical treatment should focus on the whole disease course of atrial fibrillation, implementing stage-based treatments to enable early intervention and holistic regulation.
6.Bibliometric analysis of research process and current situation of brain aging and exosomes
Liting LYU ; Xia YU ; Jinmei ZHANG ; Qiaojing GAO ; Renfan LIU ; Meng LI ; Lu WANG
Chinese Journal of Tissue Engineering Research 2025;29(7):1457-1465
BACKGROUND:In recent years,with the rapid development of biomedicine,the study of brain aging and exosomes has attracted more and more attention,but there is no bibliometrics analysis in this field. OBJECTIVE:To objectively analyze domestic and foreign literature on brain aging and exosomes in the past 15 years,to summarize the research status,hot spots,and development trends in this field. METHODS:Using the core database of Web of Science as a search platform,we downloaded the literature on brain aging and exosomes published from the establishment of the database to December 28,2022,and analyzed the data from the aspects of country or region,institution,author,keywords,and co-cited literature using CiteSpace 6.1.R6 visualization software. RESULTS AND CONCLUSION:A total of 1 045 research articles were included,and the number of publications on brain aging and exosomes research both domestically and internationally was showing an increasing trend year by year.The United States ranked first with 429 papers,and China ranked second with 277 papers.Louisiana State University ranked first with 16 articles.Professor Lukiw Walter J from Louisiana State University in the United States was the author with the highest number of publications,and Professor Bartel DP from the Massachusetts Institute of Technology was the author with the most citations.The most prolific Journal was the International Journal of Molecular Sciences.Alzheimer's disease,microRNA,gene expression,extracellular vesicles,exosomes,oxidative stress,and biomarkers are the most relevant terms.According to the research on hot topics,biomarkers have become a new research hotspot.The above results indicate that the research on brain aging and exosomes has gradually increased in the past 15 years.The research direction has gradually shifted from the initial exploration of the expression of miRNAs in central nervous system diseases related to brain aging to the search for biomarkers that can identify and diagnose neurodegenerative diseases.The study of exocrine miRNAs to protect central nervous system from damage has emerged as promising therapeutic strategy.
7.Treating stasis-heat based on the ministerial fire axis of "pericardium-sanjiao-gallbladder"
Nachuan LI ; Kai LYU ; Ziwang LIU ; Hongxiao ZHANG ; Meng ZHANG ; Lu DING
Journal of Beijing University of Traditional Chinese Medicine 2025;48(3):330-335
Stasis-heat is a pathological factor associated with numerous exogenous and internal injuries, representing a pivotal mechanism in disease progression. Its primary cause is fire-heat toxicity. Based on the theory of qi and the holistic perspective of traditional Chinese medicine, this concept emphasizes that the biochemistry of all natural phenomena relies on the dynamic movement of qi ascending, descending, exiting, and entering. Within six qi, "fire" includes sovereign and ministerial fires. While physiological ministerial fire is the source power of life, pathological ministerial fire manifests as violent, intense energy that readily interacts with blood, leading to the formation of stasis-heat. Therefore, this article examines the formation and treatment of stasis-heat resulting from ministerial fire dysfunction. From the perspectives of ministerial fire gasification, the shape and quality of meridians, and the elevation of ministerial fire, it elucidates why the "pericardium-sanjiao-gallbladder" axis is regarded as pivotal. Furthermore, when the "pericardium-sanjiao-gallbladder" ministerial fire axis is unfavorable, and the stagnation of ministerial fire elevation and blockage is crucial to stasis-heat formation. Additionally, the depletion of essence and blood in the liver and kidneys, preventing the proper storage of ministerial fire, forms the pathological foundation. Drawing upon The Inner Canon of Yellow Emperor, this article explores therapeutic principles based on the rules of odor treatment: "when fires in the interior, the treatment of salty and cold, accompanied by bitter and pungent, acid to astringe, bitter to disperse." These principles are applied to achieve specific therapeutic goals: tempering the excess of ministerial fire to cool the nutritive level and transform stasis; adjusting the imbalance of elevation and depression to vent heat and unblock stasis; and restoring the misplaced fire by nourishing blood to expel stasis. Through these approaches, the article aims to reestablish the proper circulation of ministerial fire, dissipate blood stasis, and ultimately eliminate stasis-heat, thereby offering an integrated perspective on its pathogenesis and treatment.
8.Clinical Observation of Modified Zhigancao Tang in Treating Patients with Liver and Kidney Deficiency of Parkinson's Disease and Its Effect on Neuronal Signal-related Proteins
Yifo WEI ; Furong LYU ; Jia YAO ; Guonian LI ; Xianyi LUO ; Meng LUO ; Zhengzheng WEN ; Qiuqi LI ; Yihan LIU ; Linlin YANG ; Rui ZUO ; Wenxin DANG ; Fang MI ; Xiaoyan WANG ; Zhigang CHEN ; Fan LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(4):166-173
ObjectiveMicrotube associated protein-2 (MAP-2), alpha-tubulin (α-tubulin), and synaptophysin (SYP) are important proteins in neuronal signal communication. This paper observed the effects of modified Zhigancao Tang on the expression of serum α-Synuclein (α-Syn) and its oligomers, MAP-2, α-tubulin, and SYP of patients with liver and kidney deficiency of Parkinson's disease (PD), analyzed their correlation, and evaluated the therapeutic effect of modified Zhigancao Tang in patients with liver and kidney deficiency of PD based on α-Syn transmission pathway mediated by neuronal communication in vivo. MethodsA total of 60 patients with PD who met the inclusion criteria were randomly divided into a treatment group (30 cases) and a control group (30 cases). Both groups were treated on the basis of PD medicine, and the treatment group was treated with modified Zhigancao Tang. Both groups were treated for 12 weeks. The changes in UPDRS score, TCM syndrome score, and expression of serum α-Syn and its oligomers, MAP-2, α-tubulin, and SYP were observed before and after 12 weeks of treatment in each group. The correlation between the above-mentioned serum biological indexes and the levels of serum α-Syn and its oligomers was analyzed. ResultsAfter treatment, the TCM syndrome score, UPDRS score, UPDRS-Ⅱ score, and UPDRS-Ⅲ score of the treatment group were significantly decreased (P<0.05, P<0.01). The UPDRS score, UPDRS-Ⅱ score, and UPDRS-Ⅲ scores in the treatment group were significantly decreased compared with those in the control group after treatment (P<0.05). After treatment, the total effective rate of the control group was 63.3% (19/30), and that of the treatment group was 86.7% (26/30). The clinical effect of the observation group was better than the control group (Z=-2.03, P<0.05). The total effective rate of the observation group was better than that of the control group, and the difference was statistically significant (χ2=5.136, P<0.05). After treatment, the oligomer level of serum α-Syn and MAP-2 level in the treatment group were significantly decreased (P<0.05, P<0.01). The levels of serum α-Syn and its oligomers, as well as α-tubulin in the treatment group, were significantly decreased compared with those in the control group after treatment (P<0.05, P<0.01). Serum α-Syn was correlated with serum MAP-2 and α-Syn oligomer in patients with PD (P<0.05, P<0.01) but not correlated with serum SYP . Serum α-Syn oligomers of patients with PD were correlated with serum MAP-2 and α-tubulin (P<0.05, P<0.01) but not correlated with serum SYP level. Serum SYP of patients with PD was correlated with serum MAP-2 (P<0.05). ConclusionModified Zhigancao Tang has a therapeutic effect on patients with liver and kidney deficiency of PD by inhibiting the production of α-Syn oligomers and intervening α-Syn microtubule transport pathway in vivo.
9.Hei Xiaoyaosan Improves Learning and Memory Abilities in Alzheimer's Disease Rats by Regulating Cell Apoptosis
Huping WANG ; Jiao YANG ; Yiqin CHEN ; Zhipeng MENG ; Yujie LYU ; Yunyun HU ; Wenli PEI ; Yumei HAN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(9):108-115
ObjectiveTo explore the mechanism of Hei Xiaoyaosan in improving the cognitive function in Alzheimer's disease (AD) from cell apoptosis mediated by the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt)/nuclear factor kappa B (NF-κB) signaling pathway. MethodsFour-month-old SD male rats were randomly assigned into a blank group, a sham group, a model group, a donepezil hydrochloride (0.45 mg·kg-1) group, and high-, medium-, and low-dose (15.30, 7.65, and 3.82 g·kg-1, respectively) Hei Xiaoyaosan groups, with 10 rats in each group. The sham group received bilateral hippocampal injection of 1 μL normal saline, while the other groups received bilateral hippocampal injection of 1 μL beta-amyloid 1-42 (Aβ1-42) solution for the modeling of AD. Rats were administrated with corresponding agents once a day for 42 consecutive days. The Morris water maze test was carried out to assess the learning and memory abilities of rats. Hematoxylin-eosin staining was employed to observe pathological changes in the hippocampus of rats. Enzyme-linked immunosorbent assay was employed to measure the levels of cysteinyl aspartate-specific proteinase-3 (Caspase-3), B-cell lymphoma-2 (Bcl-2), and Bcl-2-associated X protein (Bax). Western blot was employed to determine the protein levels of PI3K, Akt, and NF-κB. A cell model of AD was established by co-culturing Aβ1-42 and PC12 cells in vitro. Cell viability and apoptosis were detected by the cell-counting kit 8 (CCK-8) assay and flow cytometry (FC), respectively. ResultsAnimal experiments showed that compared with the blank group, the model group had a prolonged escape latency (P<0.01), a reduced number of crossing platforms (P<0.01), disarrangement and a reduced number of hippocampal neurons, up-regulated expression of Bax and Caspase-3, down-regulated expression of Bcl-2 (P<0.01), decreased p-PI3K/PI3K and p-Akt/Akt levels, and an increased p-NF-κB/NF-κB level (P<0.01). Compared with the model group, donepezil hydrochloride and high- and medium-dose Hei Xiaoyaosan shortened the escape latency and increased the number of crossing platforms (P<0.05, P<0.01), improved the arrangement and increased the number of hippocampal neurons, down-regulated the expression levels of Bax and Caspase-3, up-reguated the expression level of Bcl-2 (P<0.05, P<0.01), increased the p-PI3K/PI3K and p-Akt/Akt levels (P<0.05, P<0.01), and reduced the p-NF-κB/NF-κB level (P<0.05, P<0.01). Cell experiments showed that compared with the blank group, the model group exhibited an increased apoptosis rate (P<0.01). Compared with the model group, the serum containing Hei Xiaoyaosan at various doses improved the cell viability (P<0.01), and the serum containing Hei Xiaoyaosan at the high dose decreased the cell apoptosis (P<0.01). ConclusionHei Xiaoyaosan may improve the learning and memory abilities of AD model rats by regulating cell apoptosis, while increasing the vitality and reducing the apoptosis rate of AD model cells via the PI3K/Akt/NF-κB signaling pathway.
10.Effect of Hei Xiaoyaosan on Neuroinflammation and NLRP3/Caspase-1/GSDMD Signaling Pathway in APP/PS1 Mice
Jun ZHOU ; Mingcheng LI ; Yujie LYU ; Zhipeng MENG ; Yunyun HU ; Huping WANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(9):124-133
ObjectiveTo observe the effects of Hei Xiaoyaosan on the learning and memory abilities of Alzheimer's disease model mice (APP/PS1 mice), and to explore its mechanism through the inflammatory cascade mediated by nucleotide-binding oligomerization domain-like receptor family pyrin domain-containing 3 (NLRP3)/cysteine aspartate-specific protease (Caspase-1)/gasdermin D (GSDMD) signaling pathway. MethodsSPF-grade 4-month-old APP/PS1 mice were randomly divided into the model group, MCC950 group, and Hei Xiaoyaosan high-, medium-, and low-dose groups. C57BL/6J mice were used as the blank group. After 7 days of adaptive feeding, mice in each group were intervened. The Hei Xiaoyaosan high-, medium-, and low-dose groups were given corresponding doses by gavage (25.79, 12.90, 6.45 g·kg-1·d-1), the MCC950 group was intraperitoneally injected with 10 mg·kg-1·2 d-1, and the blank group received the same volume of physiological saline by gavage. After 90 days of intervention, the learning and memory abilities were assessed using the Y maze and Morris water maze tests. The structural changes of hippocampal neurons were observed by hematoxylin-eosin (HE) staining. The expression of amyloid precursor protein (APP) in the hippocampal CA3 region was detected by immunohistochemistry. Enzyme-linked immunosorbent assay (ELISA) was used to measure the levels of interleukin (IL)-10, IL-18, and IL-1β in the hippocampus. Western blot was applied to detect the protein expression of NLRP3, Caspase-1, GSDMD, and GSDMD-N in the hippocampus. Immunofluorescence was used to detect the co-localization of GSDMD-N and ionized calcium-binding adapter molecule-1 (Iba-1) in the hippocampus. Results① In the Y maze test, compared with the blank group, the spontaneous alternation rate of the model group was significantly reduced (P<0.01). Compared with the model group, the spontaneous alternation rate in the Hei Xiaoyaosan high- and low-dose groups was significantly increased (P<0.01). ② In the Morris water maze test, during the 1-4 days of the location navigation test, the escape latency time of mice decreased with the extension of training time. On day 4, compared with the blank group, the model group showed a significantly increased escape latency (P<0.05). Compared with the model group, the MCC950 group and the Hei Xiaoyaosan low-dose group showed significantly reduced escape latency (P<0.05). In the spatial exploration experiment, compared with the blank group, the number of platform crossings in the model group was significantly reduced (P<0.01). Compared with the model group, the Hei Xiaoyaosan low-dose group showed significantly increased platform crossings (P<0.05). ③ HE staining showed that, compared with the blank group, the hippocampal CA3 cells of the model group were damaged, arranged loosely and irregularly, swollen, with unclear boundaries, and the nuclei were pyknotic and deeply stained. MCC950 and all doses of Hei Xiaoyaosan improved the hippocampal CA3 cell damage in APP/PS1 mice to varying degrees. ④ Immunohistochemical results indicated that, compared with the blank group, the expression of APP in the hippocampal CA3 region was significantly increased in the model group (P<0.01). MCC950 and all doses of Hei Xiaoyaosan could reduce the expression of APP in the hippocampal CA3 region of APP/PS1 mice (P<0.01). ⑤ ELISA results showed that the levels of IL-18 and IL-1β in the hippocampus of mice in the model group were significantly increased, and IL-10 levels were significantly reduced (P<0.01). Compared with the model group, the IL-18 levels in the MCC950 group and the Hei Xiaoyaosan medium- and low-dose groups were significantly reduced (P<0.01). IL-1β levels in the hippocampus of the MCC950 group and Hei Xiaoyaosan high-, medium-, and low-dose groups were significantly decreased (P<0.01). The IL-10 levels in the hippocampus of the MCC950 group and the Hei Xiaoyaosan medium- and low-dose groups were increased (P<0.05, P<0.01). ⑥ Western blot results showed that compared with the blank group, the protein levels of NLRP3, Caspase-1, GSDMD, and GSDMD-N in the hippocampus of the model group were significantly elevated (P<0.01). Compared with the model group, the content of NLRP3 and Caspase-1 in the hippocampus of the treated groups was decreased (P<0.05, P<0.01). The content of GSDMD in the hippocampus of the Hei Xiaoyaosan high-, medium-, and low-dose groups was reduced (P<0.05, P<0.01), and the content of GSDMD-N in the hippocampus of the Hei Xiaoyaosan medium- and low-dose groups was decreased (P<0.05, P<0.01). ⑦ Immunofluorescence results showed that, compared with the blank group, the co-expression of GSDMD-N and Iba-1 in the hippocampus of the model group was significantly increased (P<0.01). Compared with the model group, the co-expression of GSDMD-N and Iba-1 in the treated groups was significantly reduced (P<0.01). ConclusionHei Xiaoyaosan may regulate the NLRP3/Caspase-1/GSDMD signaling pathway to affect the release of inflammatory factors, alleviate neuroinflammation,improve hippocampal histopathological changes,and improve learning and memory deficits,thus providing potential therapeutic benefits for Alzheimer's disease.


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