1.Bugansan Regulates R-spondin1/Wnt3a-mediated Intestinal Injury to Ameliorate Digestion and Absorption Dysfunction in Rat Model of Aging Induced by D-galactose
Yixuan WANG ; Ran HUO ; Jin TIAN ; Fang FANG ; Na LIU ; Jiepeng WANG ; Chaoyi FANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(9):19-27
ObjectiveTo elucidate the correlation between alterations in digestion and absorption functions and hepatic deficiency states in aging rats based on the R-spondin1/Wnt3a signaling pathway, and reveal the intervention mechanism of Bugansan. MethodsForty-eight SPF-grade male SD rats were randomly assigned to six groups: blank control, model, low-, medium-, and high-dose (7.03, 14.06, 28.12 g·kg-1, respectively) Bugansan, and vitamin E (suspension, 27 mg·kg-1), with 8 rats in each group. The rat model of aging was established by intraperitoneal injection of D-galactose (400 mg·kg-1), while the blank control group was injected with normal saline. Since the day of modeling, rats in intervention groups received corresponding agents by gavage, and those in blank control and model groups received an equal volume of normal saline (10 mL·kg-1). General biological features such as fur color, activity, body mass, water intake, and food intake were observed. Meanwhile, the content of malondialdehyde (MDA) and the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in the serum were measured to assess aging. Grip strength and the content of total bile acids (TBA) and the activity of α-amylase (AMY) in the serum were measured to evaluate hepatic deficiency states. The activity of β-galactosidase (β-gal) in the duodenum was measured to evaluate intestinal senescence. The levels of glucagon-like peptide-1 (GLP-1), vasoactive intestinal peptide (VIP), and D-xylose in the serum were determined to assess digestion and absorption functions of the small intestine. Hematoxylin-eosin staining was conducted to observe pathological changes of the duodenum to assess the small intestine damage. Immunohistochemical staining was employed to visualize the expression of B-cell-specific Moloney murine leukemia virus integration site 1 (Bmi1) and leucine-rich repeat-containing G protein-coupled receptor 5 (Lgr5) in the duodenal tissue. Moreover, Real-time quantitative polymerase chain reaction (Real-time PCR) was utilized to quantify the mRNA levels of Ki67, Bmi1, and Lgr5 to assess proliferation and regeneration of the small intestine. Additionally, the mRNA levels of R-spondin1, Wnt3a, β-catenin, and glycogen synthase kinase-3β (GSK-3β) and the protein levels of R-spondin1, Wnt3a, β-catenin, and phosphorylated GSK-3β (p-GSK-3β) in the duodenum were determined by Real-time PCR and Western blot, respectively, to analyze the mechanisms of intestinal digestion and absorption dysfunction in aging rats and the regulatory characteristics of Bugansan. ResultsCompared with blank control group, the model group showed decreases in body mass, water intake, food intake, grip strength, activities of SOD, GSH-Px, and AMY in the serum and content of GLP-1, VIP and D-xylose in the serum (P<0.05), increases in the content of MDA and TBA in the serum and β-gal activity in the duodenum (P<0.05), reductions in villus length, villus width, crypt depth, and villi/crypt (V/C) value, down-regulated mRNA and protein levels of Ki67, Lgr5, Bmi1, R-spondin1, Wnt3a, β-catenin, and up-regulated level of GSK-3β, phosphorylation (p)-GSK-3β (P<0.05). Compared with the model group, Bugansan increased the body mass, water intake, food intake, grip strength, and activities of SOD, GSH-Px, and AMY and levels of GLP-1, VIP and D-xylose in the serum (P<0.05), while decreasing the content of MDA and TBA in the serum and β-gal activity in the duodenum (P<0.05). Furthermore, Bugansan increased the villus length, villus width, crypt depth, and V/C value, up-regulated the mRNA and protein levels of Ki67, Lgr5, Bmi1, R-spondin1, Wnt3a, β-catenin, and down-regulated the level of GSK-3β and p-GSK-3β (P<0.05). ConclusionAging rats exhibit obvious impairments in digestion and absorption functions, accompanied by a state of hepatic deficiency. The traditional Chinese medicine approach of tonifying liver Qi effectively ameliorates aging-related changes by modulating the R-spondin1/Wnt3a signaling pathway to mitigate intestinal senescence and enhance digestion and absorption functions, ultimately contributing to the delay of aging.
2.Status Analysis of Acupoint Selection and Stimulation Parameters Application for Acupuncture Treatment of Functional Dyspepsia
Siyi ZHENG ; Han ZHANG ; Yang YU ; Chuanlong ZHOU ; Yan SHI ; Xiaohu YIN ; Shouhai HONG ; Na NIE ; Jianqiao FANG ; Yi LIANG
Journal of Traditional Chinese Medicine 2025;66(12):1293-1299
Based on commonly used acupoints in the clinical acupuncture treatment of functional dyspepsia (FD), this study systematically analyzes the therapeutic differences and synergistic effects between local and distal point selection. It also examines the suitability of primary acupoint selection for different FD subtypes, postprandial distress syndrome (PDS) and epigastric pain syndrome (EPS). The findings suggest that a combination of local and distal acupoints may be more appropriate as primary points for PDS, whereas local acupoints alone may be more suitable for EPS. Additionally, the study explores the impact of various factors, such as stimulation techniques, needling order, intensity or stimulation parameters, and depth, on the efficacy of acupuncture. It concludes that the intrinsic properties of acupoints are the primary determinants of therapeutic direction. Other factors mainly influence the magnitude rather than the direction of the effect. Future research may further investigate how different acupoint combinations, local versus distal, affect the treatment outcomes of FD subtypes, providing new insights for clinical acupuncture prescriptions.
3.Untargeted Metabolomics Reveals Mechanism of Modified Sinisan in Ameliorating Anxiety-like Behaviors Induced by Chronic Restraint Stress in Mice
Jie ZHAO ; Zhengyu FANG ; He XIAO ; Na GUO ; Hongwei WU ; Hongjun YANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):70-79
ObjectiveTo elucidate the potential mechanism of modified Sinisan (MSNS) in alleviating anxiety-like behaviors induced by chronic restraint stress (CRS) in mice at the metabolic level based on serum untargeted metabolomics and identify key metabolites and metabolic pathways regulated by MSNS. MethodsSeventy-two male C57BL/6 mice were randomly assigned into six groups: control, model, high-dose (2.4 g·kg-1) MSNS, medium-dose (1.2 g·kg-1) MSNS, low-dose (0.6 g·kg-1) MSNS, and positive control (fluoxetine, 2.6 mg·kg-1). Except the control group, the other groups were subjected to CRS for the modeling of anxiety. Mice were administrated with corresponding agents by gavage 2 h before daily restraint for 14 days. Anxiety-like behaviors were evaluated by the open field test (OFT), elevated plus maze (EPM) test, and light/dark box (LDB) test. Serum levels of corticotropin-releasing hormone (CRH), adrenocorticotrophic hormone (ACTH), and corticosterone (CORT) were measured via ELISA to assess stress levels. Ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was employed to detect 9 metabolites in the brain tissue and serum metabolites. Orthogonal partial least squares-discriminant analysis (OPLS-DA) was adopted to identify differential metabolites (VIP>1.0, P<0.05). MetaboAnalyst 5.0 was used for metabolic pathway enrichment analysis of the differential metabolites. ResultsCompared with the control group, the model group showed reductions in the central activity time and central distance in the OFT (P<0.05), the proportions of open-arm residence time and open-arm residence times in the EPM test (P<0.01), and the proportions of open box activity time and open box activity distance in the LDB test (P<0.05), which were increased in the medium- and high-dose MSNS groups compared with the model group (P<0.05). Compared with the control group, the model group showed elevated levels of CRH, ACTH, and CORT in the serum (P<0.01), and the elevations were diminished in the medium- and high-dose MSNS groups (P<0.05). UPLC-MS results indicated that compared with the control group, the model group presented declined DA, GABA, 5-HIAA, 5-HT, and 5-HT/Trp levels (P<0.05, P<0.01) and raised Glu, NE, Kyn, and Kyn/Trp levels (P<0.05). Compared with the model group, high-dose MSNS increased the GABA, 5-HIAA, and 5-HT/Trp levels (P<0.05) and lowered the Glu and Kyn/Trp levels (P<0.05). Untargeted metabolomics identified that 16 CRS-induced metabolic disturbances were reversed by MSNS. KEGG pathway analysis indicated that MSNS primarily modulated eight core pathways including alanine/aspartate/glutamate metabolism, butyrate metabolism, arginine-proline metabolism, TCA cycle, unsaturated fatty acid biosynthesis, and tryptophan metabolism. The mechanisms involved multidimensional biological processes, including neurotransmitter homeostasis regulation, TCA cycle energy metabolism optimization, and inflammatory response suppression. ConclusionMSNS alleviates CRS-induced anxiety-like behaviors in mice by mitigating hypothalamic-pituitary-adrenal axis hyperactivity, improving hippocampal neurotransmitter and tryptophan metabolic pathways, and regulating alanine/aspartate/glutamate metabolism, butyrate metabolism, arginine-proline metabolism, and TCA cycle.
4.Untargeted Metabolomics Reveals Mechanism of Modified Sinisan in Ameliorating Anxiety-like Behaviors Induced by Chronic Restraint Stress in Mice
Jie ZHAO ; Zhengyu FANG ; He XIAO ; Na GUO ; Hongwei WU ; Hongjun YANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):70-79
ObjectiveTo elucidate the potential mechanism of modified Sinisan (MSNS) in alleviating anxiety-like behaviors induced by chronic restraint stress (CRS) in mice at the metabolic level based on serum untargeted metabolomics and identify key metabolites and metabolic pathways regulated by MSNS. MethodsSeventy-two male C57BL/6 mice were randomly assigned into six groups: control, model, high-dose (2.4 g·kg-1) MSNS, medium-dose (1.2 g·kg-1) MSNS, low-dose (0.6 g·kg-1) MSNS, and positive control (fluoxetine, 2.6 mg·kg-1). Except the control group, the other groups were subjected to CRS for the modeling of anxiety. Mice were administrated with corresponding agents by gavage 2 h before daily restraint for 14 days. Anxiety-like behaviors were evaluated by the open field test (OFT), elevated plus maze (EPM) test, and light/dark box (LDB) test. Serum levels of corticotropin-releasing hormone (CRH), adrenocorticotrophic hormone (ACTH), and corticosterone (CORT) were measured via ELISA to assess stress levels. Ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was employed to detect 9 metabolites in the brain tissue and serum metabolites. Orthogonal partial least squares-discriminant analysis (OPLS-DA) was adopted to identify differential metabolites (VIP>1.0, P<0.05). MetaboAnalyst 5.0 was used for metabolic pathway enrichment analysis of the differential metabolites. ResultsCompared with the control group, the model group showed reductions in the central activity time and central distance in the OFT (P<0.05), the proportions of open-arm residence time and open-arm residence times in the EPM test (P<0.01), and the proportions of open box activity time and open box activity distance in the LDB test (P<0.05), which were increased in the medium- and high-dose MSNS groups compared with the model group (P<0.05). Compared with the control group, the model group showed elevated levels of CRH, ACTH, and CORT in the serum (P<0.01), and the elevations were diminished in the medium- and high-dose MSNS groups (P<0.05). UPLC-MS results indicated that compared with the control group, the model group presented declined DA, GABA, 5-HIAA, 5-HT, and 5-HT/Trp levels (P<0.05, P<0.01) and raised Glu, NE, Kyn, and Kyn/Trp levels (P<0.05). Compared with the model group, high-dose MSNS increased the GABA, 5-HIAA, and 5-HT/Trp levels (P<0.05) and lowered the Glu and Kyn/Trp levels (P<0.05). Untargeted metabolomics identified that 16 CRS-induced metabolic disturbances were reversed by MSNS. KEGG pathway analysis indicated that MSNS primarily modulated eight core pathways including alanine/aspartate/glutamate metabolism, butyrate metabolism, arginine-proline metabolism, TCA cycle, unsaturated fatty acid biosynthesis, and tryptophan metabolism. The mechanisms involved multidimensional biological processes, including neurotransmitter homeostasis regulation, TCA cycle energy metabolism optimization, and inflammatory response suppression. ConclusionMSNS alleviates CRS-induced anxiety-like behaviors in mice by mitigating hypothalamic-pituitary-adrenal axis hyperactivity, improving hippocampal neurotransmitter and tryptophan metabolic pathways, and regulating alanine/aspartate/glutamate metabolism, butyrate metabolism, arginine-proline metabolism, and TCA cycle.
5.Effect of Qianyang Yuyin Granules on Elderly Hypertensive Patients Based on "Energy-inflammation-aging" Network
Yuan FANG ; Li LI ; Na XIONG ; Meng LI ; Yongcheng NI ; Yawei ZHENG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(22):165-173
ObjectiveTo multidimensionally analyze the clinical effects of Qianyang Yuyin granules on elderly hypertensive patients through an "energy-inflammation-aging" network. MethodsRelevant datasets were retrieved from the GEO database. Gene set enrichment analysis (GSEA) was performed on the gene expression profiles of peripheral blood cells from patients with essential hypertension in dataset GSE24752. The GSEA referenced "GO gene sets" and "KEGG gene sets" to identify significantly enriched gene sets. A clinical trial was conducted using a randomized controlled study design. A total of 40 patients meeting the inclusion criteria were enrolled. The control group received standard antihypertensive treatment with angiotensin receptor blockers (ARBs) or combined calcium channel blockers (CCBs). In contrast,the treatment group received Qianyang Yuyin Granules in addition to the standard treatment for 12 weeks. Blood pressure levels and clinical efficacy were observed,and changes in energy metabolism indicators,DNA damage markers,and senescence-associated secretory phenotype (SASP) in blood were measured using ELISA before and after treatment. ResultsGSEA results indicated significant energy metabolism dysregulation in hypertensive patients. Clinical findings showed that both groups achieved blood pressure control without significant intergroup differences. In terms of clinical efficacy,the treatment group had a significantly higher effective rate compared to the control group (95% vs 65%,P0.05). After treatment,the treatment group showed a significant increase in NAD+ levels (P0.01),with higher levels compared to the control group (P0.05). The treatment group also exhibited a greater reduction in DNA damage marker 8-OHdG (P0.01) and cell adhesion factors ICAM-1 and VCAM-1 (P0.01) compared to the control group. Pro-inflammatory cytokines IL-1β and IL-6 were significantly reduced in the treatment group (P0.01),with greater reductions compared to the control group (P0.05,P0.01). Anti-inflammatory cytokines IFN-α,IL-4,and IL-10 were significantly elevated in the treatment group (P0.01),with higher levels compared to the control group (P0.01). No significant adverse reactions were reported in either group. ConclusionThe "energy- inflammation- aging" network plays an important role in the pathological mechanism of hypertension patients. Qianyang Yuyin granules may delay the aging process by increasing patients' energy metabolism levels,reducing DNA oxidative damage,and maintaining the balance of inflammatory factors.
6.Inhibitory effect of royal jelly acid on proliferation of human colon cancer SW620 cells and its network pharmacological analysis
Yaxin LIU ; Jian LIU ; Zhen LI ; Zhanhong CAO ; Haonan BAI ; Yu AN ; Xingyu FANG ; Qing YANG ; Hui LI ; Na LI
Journal of Jilin University(Medicine Edition) 2024;50(1):150-160
Objective:To discuss the effect of royal jelly acid(10-HDA)on the proliferation and migration of the human colon cancer SW620 cells based on the network pharmacology,and to clarify its related molecular mechanism.Methods:The active ingredients such as 10-HDA and their corresponding targets were retrieved by using the keyword"royal jelly"from the Traditiomal Chinese Medicine Systems Pharmacology(TMSCP)Database and the Traditiomal Chinese Medicine Integrated Database(TCMID);the small molecule targets were predicted by the Swiss Target Prediction Database.The GeneCards Database and the Online Mendelian Inheritance in Man(OMIM)Database were used to obtain the targets with the keyword"Colon Cancer";the protein-protein interaction(PPI)network was constructed by using the String Database and Cytoscape 3.8.0 Software to screen the core targets;the Gene Ontology(GO)function enrichment analysis and Kyoto Encyclopedia of Genes and Genomes(KEGG)signaling pathway enrichment analysis were analyzed by Metascape Database;the specific ingredient 10-HDA was screened for the in vitro activity experiments.The human colon cancer SW620 cells with good growth status were divided into control group and different doses(1,5,10,15,and 20 mmol·L-1)of 10-HDA groups.The viabilities of the cells in various groups were detected by MTT method and the survival rates of the cells were calculated.The SW620 cells were divided into control group,low dose(5 mmol·L-1)of 10-HDA group,middle dose(10 mmol·L-1)of 10-HDA group,and high dose(15 mmol·L-1)of 10-HDA group;Hoechst33342 staining method was used to observe the morphology of the cells in various groups;cell scratch test was used to detect the scratch healing rates of the cells in various groups;flow cytometry was used to detect the percentages of the cells at different cell cycles in various groups;biochemical method was used to detect the activities of total antioxidant capacity(T-AOC)and superoxide dismutase(SOD)in the cells in various groups;Western blotting method was used to detect the expression levels of B-cell lymphoma 2(Bcl-2),Bcl-2-associated X protein(Bax),cysteine-containing aspartate proteolytic enzyme-3(Caspase-3),cysteine-containing aspartate proteolytic enzyme-9(Caspase-9),glycogen synthase kinase 3β(GSK3β),β-catenin,and cyclin D1 proteins in the cells in various groups.Results:Six active ingredients of royal jelly were screened out by the TCMSP Database,and 28 core targets of 10-HDA in the treatment of colon cancer were obtained.The GO function enrichment analysis mainly included the signaling pathways such as cell proliferation and apoptosis.The KEGG signaling pathway enrichment analysis included the cell cycle,prostate cancer,cell senescence,and p53 signaling pathways;the GSK3β/β-catenin signaling pathway was closely related to the cell cycle.Compared with control group,the viabilities of the cells in 5,10,15,and 20 mmol·L-110-HDA groups were decreased in a dose-dependent manner(P<0.05 or P<0.01),the numbers of apoptotic cells in different doses of 10-HDA groups were significantly increased,and the scratch healing rates of the cells were significantly decreased(P<0.05 or P<0.01);the percentages of the cells at S phase in middle and high doses of 10-HDA groups were significantly increased(P<0.05 or P<0.01),the activities of T-AOC and SOD in the cells in different doses of 10-HDA groups were significantly decreased(P<0.05 or P<0.01).Compared with control group,the expression level of Bcl-2 protein in the cells in low dose of 10-HDA group was significantly decreased(P<0.01),and the expression level of GSK3β protein was significantly increased(P<0.05);compared with control group,the expression levels of Bax,Caspase-3,Caspase-9,and GSK3β proteins in the cells in middle and high doses of 10-HDA groups were significantly increased(P<0.05 or P<0.01),and the expression levels of Bcl-2,β-catenin,and CyclinD1 proteins were significantly decreased(P<0.01).Conclusion:10-HDA can significantly inhibit the proliferation and migration of the colon cancer cells and promote the apoptosis and oxidation levels of the colon cancer cells,and its mechanism may be related to the activation of the GSK3β/β-catenin signaling pathway.
7.Transporter-mediated Nano-delivery System in Promoting Oral Absorption of Drugs:A Review
Na TIAN ; Yanqing ZHANG ; Wei LI ; Leilei FANG ; Junbo XIE
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(2):254-266
Oral administration is the most convenient way of drug delivery, but due to the existence of intestinal barrier, the oral bioavailability of drugs is generally low, especially for drugs with low water solubility, poor permeability and macromolecules. For decades, researchers have demonstrated that nano-delivery system is one of the most effective strategies to solve this problem, but nano-delivery systems have shown limited improvement in the oral bioavailability of drugs. Therefore, researchers have proposed to use transporter-mediated nano-delivery systems to promote the oral absorption of drugs. The intestinal tract were highly expressed as a transporter for ingesting various nutrients(such as glucose, oligopeptides and bile acids), which was an excellent target of oral drug delivery system. Its substrate were modified on the nano-delivery system, and the loaded drugs could cross the intestinal barrier and enter the systemic circulation more efficiently through the targeting effect of transporters. At present, more and more evidences supported the potential of transporters in the field of oral drug delivery system. Therefore, this paper reviewed the research on intestinal transporters-mediated nano-delivery system to promote oral absorption of drugs, including the distribution of intestinal transporters, three strategies of transporter substrate modification, the transport properties of different types of transporters and their effects of mediating the nano-delivery system for promoting the oral absorption of drugs or treating diseases, with the aim of providing an important theoretical reference for the development of intestinal targeted nano-delivery systems.
8.Network meta-analysis of the modeling effects of different factors on rabbit models of steroid-induced osteonecrosis of femoral head
Zhixing HU ; Qun LI ; Chao YANG ; Xiaoxiao WANG ; Luochangting FANG ; Wuqiong HOU ; Na LIN ; Weiheng CHEN ; Chunfang LIU ; Ya LIN
Chinese Journal of Tissue Engineering Research 2024;28(6):976-984
OBJECTIVE:The rabbit model of steroid-induced osteonecrosis of femoral head is the most commonly used animal model of femoral head necrosis.The pathological changes of the femoral head are close to clinical practice,however,the conditions,methods and evaluation standards of animal models reported in and outside China are not uniform,which leads to the low scientific value of animal models and is difficult to popularize.This study aimed to clarify the influence of different mold-making conditions on the establishment of steroid-induced osteonecrosis of femoral head rabbit model and analyze the appropriate conditions for the successful model establishment. METHODS:We searched the CNKI,WanFang,VIP,CBM,WoS,PubMed and EMbsae databases for the literature on the modeling of steroid-induced osteonecrosis of femoral head rabbits up to April 1,2022,completed the screening of the literature according to the inclusion and exclusion criteria and literature quality evaluation,and extracted the outcome index data in the literature.RevMan Stata and ADDIS statistical software were used to conduct a meta-analysis of the included data. RESULTS:(1)A total of 82 articles with 1 366 rabbits were included in the study.The steroid-induced osteonecrosis of femoral head modeling methods were divided into three types:steroid-alone method,steroid combined lipopolysaccharide method and steroid combined serum method.Among these,33 articles used steroid-alone method;20 articles used steroid combined lipopolysaccharide method;29 articles used steroid combined serum method.(2)Meta-analysis results showed that the three modeling methods significantly increased the rate of empty bone lacunae in the femoral head of steroid-induced osteonecrosis of femoral head rabbits(P<0.001),and significantly decreased the ratio of the trabecular bone area in the femoral head of steroid-induced osteonecrosis of femoral head rabbits(P<0.001).The order of empty bone lacunae rate of each modeling method was:steroid combined with lipopolysaccharide method>steroid-alone method>steroid combined with serum method>normal group,and the order of trabecular bone area rate of each modeling method was:normal group>steroid combined with serum method>steroid-alone method>steroid combined with lipopolysaccharide method.(3)The results of subgroup analysis suggested that the rate of empty bone lacunae in the rabbit model induced by steroid alone might be related to the rabbit variety and the type of steroid used for modeling(difference between groups P<0.05),in which the combined effect amount of New Zealand white rabbits was higher than that of Chinese white rabbits(P<0.05)and Japanese white rabbits,and the combined effect amount of dexamethasone was higher than that of other steroids.The rate of empty bone lacunae induced by steroid combined with lipopolysaccharide was related to the administration mode of lipopolysaccharide and the type of steroid(P<0.05),among which the combined effect of methylprednisolone sodium succinate was significantly higher than that of other steroids(P<0.05),and the combined effect of prednisolone was significantly lower than that of other steroids(P<0.05).The combined effect of lipopolysaccharide 100 μg/kg×twice was significantly lower than 10 μg/kg×twice and 50 μg/kg×twice(P<0.05).The rate of empty bone lacunae in the model induced by steroid combined with serum was related to serum dose and steroid type(P<0.05),among which the combined effect amount of dexamethasone sodium phosphate was significantly higher than other steroid types(P<0.05),and the combined effect amount of dexamethasone was significantly lower than other steroid types(P<0.05);the combined effect amount of serum"10 mL/kg+6 mL/kg"combined dose was lower than other serum doses(P<0.05). CONCLUSION:(1)With the rate of empty bone lacunae and the ratio of trabecular bone area as the judgment standard for the successful establishment of the model,the three modeling methods can successfully construct the rabbit steroid-induced osteonecrosis of femoral head model,of which the steroid combined with lipopolysaccharide method is the best.(2)New Zealand white rabbits and dexamethasone are recommended when selecting the steroid-alone method.Methylprednisolone sodium succinate and low-dose lipopolysaccharide are recommended when selecting the steroid combined with lipopolysaccharide method.Dexamethasone sodium phosphate is recommended when selecting the steroid combined with serum modeling method.
9.Role of TLR4/ERK1/2 signaling pathway in decidual tissue of unexplained spontaneous abortion
Na LI ; Zhaojin LUAN ; Meixia YANG ; Xiaoling GONG ; Ziwei ZHAO ; Fang SONG
Chinese Journal of Immunology 2024;40(3):503-506
Objective:To investigate the expression of Toll-like receptor 4(TLR4)and extracellular signal-regulated protein kinase 1/2(ERK1/2)in decidua tissue of patients with unexplained spontaneous abortion and their correlation.Methods:The expres-sions of TLR4,ERK1/2 and p-ERK1/2 in decidua tissues of 32 patients with unexplained spontaneous abortion(abortion group)and 32 normal pregnancy(control group)were detected by immunohistochemistry and Western blot,respectively.The correlation between TLR4 and p-ERK1/2 in abortion group were analyzed by Pearson hierarchical correlation analysis.Results:In immunohistochemical experiments,the cytoplasm of decidua cells in the two groups is the expression locus of TLR4,ERK1/2 and p-ERK1/2,the expression of the three proteins were different,and the expressions of TLR4 and p-ERK1/2 in abortion group were significantly higher than that in control group(P<0.01).There was no significant difference in ERK1/2 expression between abortion group and control group(P>0.05);In decidua tissue samples of abortion group,the protein level of TLR4 was higher than that of control group(P<0.05);the pro-tein level of p-ERK1/2 was significantly higher than that of control group(P<0.01),and the protein level of ERK1/2 in decidua tissue of abortion group was not statistically different from that of control group(P>0.05).TLR4 was positively correlated with p-ERK1/2 expression in abortion group(r=0.890,P<0.01).Conclusion:Abnormal activation of TLR4/ERK1/2 signaling pathway may be one of the mechanisms of unexplained spontaneous abortion.
10.Status quo of Chinese educational research in community bases for general practice standardized residency training: a bibliometric study
Yan LI ; Wei SONG ; Yiming LI ; Na WANG ; Li LING ; Hui GONG ; Fang CHENG
Chinese Journal of General Practitioners 2024;23(3):267-272
Objective:To investigate the status quo of educational and teaching research in community bases for general practice standardized residency training in China.Methods:The studies related to education research in community bases for general practice standardized residency training were searched from Chinese Journal Full Text Database (CNKI), Wanfang Database and China Science and Technology Journal Database (VIP) from inception to November 30, 2023. The keywords of "standardized training of general practitioner residents" or "general practice standardized training" or "general practitioner standardized training" or "general practice training" and "community-based teaching " or "community training" "community base" or "community teaching" were used for search, and affiliations of authors should contain"community health service center". The literature was read and summarized using Endnote and Excel software.Results:A total of 171 articles were retrieved that met the criteria, and 130 articles were finally selected for analysis according to the quality review criteria of the literature. The authors of articles were distributed in 78 institutions of 17 provinces or regions, with 9 provinces or regions having a total of 123 articles (94.6%) with 2 published articles or more, of which the highest number was found in Beijing and Shanghai. Seventeen institutions published 2 or more articles with a total of 69 articles (53.1%), including 67 articles (51.5%) were co-authored by 2 units. The ranking top ten institutions in terms of the number of articles published were 5 community health service centers in Beijing, 4 in Shanghai (co-authored with Shanghai Zhongshan Hospital). There were 46 articles (35.4%) published in core journals and 55 articles (42.3%) with fund-supported projects. The studies presented teaching methods, teaching and training contents, teaching evaluation and effects, teacher training, teaching base construction and information technology application.Conclusion:The educational and teaching research in community bases for general practice standardized training in China has gradually received attention, the researches were mainly carried out by community medical institutions, but the overall quality of research needs to be further improved.

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