1.TLR4 and IFN - γ Activated Mesenchymal Stem Cells Improve Schistosomiasis Liver Fibrosis by Regulating Macrophage Polarization
Yaojia REN ; Fang CHEN ; Wanxian HUANG ; Zhongdao WU ; Junxia LEI
Journal of Sun Yat-sen University(Medical Sciences) 2025;46(3):410-419
		                        		
		                        			
		                        			ObjectiveTo investigate whether co-activated mesenchymal stem cells(MSCs) exert therapeutic effects against schistosomiasis by modulating macrophage polarization. MethodsTwenty adult male Balb/c mice were randomly divided into four groups: uninfected, infected, MSC-treated, and MSCTLR4+IFN-γ-treated groups. The Schistosoma japonicum infection model was established via abdominal patch method with cercariae. At week 5 post-infection, praziquantel was administered orally for antiparasitic treatment. At week 6, mice received either MSCs treatments (with or without pre-activation) or no treatment. Body weight changes were monitored weekly. Hepatic pathological alterations were evaluated via HE and Masson staining. RT-qPCR was used to assess α-SMA and collagen (Col-I, Col-Ⅲ) mRNA levels to quantify fibrosis. The mRNA levels of hepatic inflammatory cytokines and matrix metalloproteinases(MMP) were analyzed to explore fibrotic mechanisms. The expressions of i-Nos and Arg-1 in liver tissues were detected by RT-qPCR, and the ratio of M1 or M2 macrophages was detected by immunofluorescence staining, aiming to analyze the correlation between MSCs treatment and macrophage polarization. An in vitro co-culture system validated direct MSC-macrophage interactions. ResultsCompared with the infected group, the MSCTLR4+IFN-γ group exhibited increased body weight gain (P< 0.01), reduced hepatic granulomatous lesion area (P< 0.001), and decreased α-SMA, Col-I, and Col-Ⅲ mRNA levels (P< 0.01). Additionally, the MSCTLR4+IFN-γ group showed reduced TNF-α and IL-1β expression (P< 0.05), as well as elevated MMP2, Mmp9, and MMP13 levels (P< 0.01). The MSCTLR4+IFN-γ group showed higher expression of M2 marker Arg-1 mRNA compared with the infection group (P < 0.001) , while the expression of M1 marker i-Nos decreased (P< 0.05). Immunofluorescence confirmed a lower i-Nos+ cell ratio (P< 0.05) and higher F4/80+CD206+ cell ratio (P< 0.000 1) in the MSCTLR4+IFN-γ group compared with the infection group. In vitro co-culture experiments further demonstrated that MSCTLR4+IFN-γ promoted Arg-1 expression, suppressed pro-inflammatory cytokine i-Nos and TNF-α levels, consistent with ELISA results. ConclusionsThis study reveals that TLR4 and IFN-γ co-activated MSCs alleviate Schistosoma japonicum-induced hepatic fibrosis, potentially through modulating macrophage polarization toward the M2 phenotype. This mechanism may suppress inflammation and enhance extracellular matrix degradation, providing a therapeutic strategy for schistosomiasis-associated liver fibrosis. 
		                        		
		                        		
		                        		
		                        	
2.EGCG Promotes Aβ Clearance of Microglia Through Blockage of the HDAC6-PI3K/AKT/mTOR Signalling Axis Followed by Autophagy Activation
Yu LIN ; Kaiwen HUANG ; Honghai HONG ; Dan ZHU ; Yousheng MO ; Dongli LI ; Shuhuan FANG
Journal of Sun Yat-sen University(Medical Sciences) 2025;46(3):486-497
		                        		
		                        			
		                        			ObjectiveTo clarify whether epigallocatechin gallate (EGCG) is involved in the clearance of amyloid β-protein (Aβ) and autophagy induction by microglia, so as to explore the potential mechanisms of EGCG in the prevention and treatment of Alzheimer's disease (AD). MethodsSix-month-old APP/PS1 mice were randomly divided into model and EGCG groups, with some additional wild type (WT) mice as the control group, each group consisting of 15 mice. The EGCG group received continuous gavage administration[5 mg/(kg·d)] for 8 weeks, followed by the open field test and Y-maze to assess the learning and memory abilities of the mice. Thioflavin-S staining was used to evaluate the content and distribution of amyloid β-protein (Aβ)in the brain parenchyma of the mice, and immunofluorescence was employed to detect the expression levels of Aβ1-42, glial fibrillary acidic protein (GFAP), and ionized calcium-binding adapter molecule 1 (Iba1) in the hippocampal tissue of the mice. Additionally, N9 mouse microglial cells were induced with 20 µmol/L Aβ1-42, and the cell viability was measured after treatment with different concentrations of EGCG (5 µmol/L, 10 µmol/L, 20 µmol/L). Western blotting was used to detect the levels of Aβ1-42, low density lipoprotein receptor-related protein 1(LRP1), receptor for advanced glycation endproducts (RAGE), amyloid precursor protein (APP), insulin degrading enzyme (IDE), neprilysin (NEP), microtubule associated protein 1 hydrogen chain 3(LC3)-Ⅱ/LC3-Ⅰ, phosphatidylinositol 3-hydroxy kinase(PI3K), p-PI3K, protein kinase B (AKT), p-AKT, mammalian target of rapamycin (mTOR), p-mTOR, and histone deacetylase 6(HDAC6). Finally, through the co-culture of microglial cells and neuronal SH-SY5Y cells, cell viability and Caspase-3 levels were measured to verify the protective effect of EGCG-mediated Aβ clearance on neurons. ResultsEGCG increased the activity time and frequency of APP/PS1 mice in the central area of the open field (P<0.05), and enhanced the percentage of alternation in the Y-maze test (P<0.01); EGCG reduced Aβ deposition in the hippocampal tissue of APP/PS1 mice and increased the number of microglia; in vitro experiments showed that EGCG improved the survival rate of Aβ-induced N9 cells (P<0.01), upregulated RAGE activity (P<0.05), and promoted the internalization and phagocytosis of Aβ (P<0.01). ECGC activated microglial autophagy by downregulating the level of HDAC6 (P<0.05), inhibiting the phosphorylation of PI3K, AKT, mTOR (P<0.001), and increasing the LC3-Ⅱ/LC3-I ratio (P<0.001); EGCG improved the survival rate of SH-SY5Y cells (P<0.05) and reduced the activity of Caspase-3 (P<0.01) by clearing Aβ1-42 through microglia, and had a protective effect on neurons. ConclusionEGCG activates microglial autophagy to clear Aβ by targeting and inhibiting the HDAC6-PI3K/AKT/mTOR axis. 
		                        		
		                        		
		                        		
		                        	
3.Clinical Efficacy of Gandouling Decoction Combined with Neuromuscular Electrical Stimulation on Dysphagia in Wilson Disease with Combined Phlegm and Stasis
Zhihong RAO ; Wenming YANG ; Yue YANG ; Xiang LI ; Peng HUANG ; Yulong YANG ; Ke DIAO ; Shuzhen FANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(15):155-162
		                        		
		                        			
		                        			ObjectiveTo observe the clinical efficacy of Gandouling decoction combined with neuromuscular electrical stimulation (NMES) in the treatment of dysphagia in Wilson disease (WD) with combined phlegm and stasis. MethodsA total of 80 WD patients with dysphagia due to combined phlegm and stasis treated in the Department of Encephalopathy, the First Affiliated Hospital of Anhui University of Chinese Medicine were randomized into a control group and an observation group, with 40 patients in each group. In addition, 40 healthy volunteers were recruited as the normal group. The control group was treated with basic copper drainage combined with NMES. The observation group was treated with Gandouling Decoction on the basis of the therapy in the control group. Each course of treatment lasted for 8 days, and the patients were treated for a total of 4 courses. All subjects underwent video fluoroscopic swallowing study (VFSS) before and after treatment. During the examination, contrast agents with 4 different characters were used for the swallowing action, and the passing time was recorded. The TCM syndrome score, water swallow test score, standard swallowing assessment (SSA) score, and 24-h urinary copper level before and after treatment were analyzed. ResultsWhen performing VFSS, the passing time of contrast agents of different characters in the oral stage was longer in the WD group than in the normal group (P<0.01), while it had no significant difference in the pharyngeal stage. After treatment, the passing time in the oral stage shortened in the control and observation groups (P<0.01), and the observation group outperformed the control group (P<0.01). After treatment, both the control and observation groups showed declines in TCM syndrome score and SSA score (P<0.01) and an increase in water swallow test score (P<0.01), and the changes were more obvious in the observation group than in the control group (P<0.01). In addition, the treatment in the control and observation groups elevated the 24-h urinary copper level (P<0.01), and the elevation in the observation group was more obvious than that in the control group (P<0.01). Neither group showed obvious adverse reaction. ConclusionGandouling decoction combined with NMES can significantly ameliorate dysphagia in WD patients with the syndrome of combined phlegm and stasis regarding the TCM syndrome score, water swallow test score, and SSA score, demonstrating definite clinical efficacy and high safety. 
		                        		
		                        		
		                        		
		                        	
4.Study on relationships of MS4A1 gene polymorphism with blood concentration and efficacy of rituximab in patients with non-Hodgkin’s lymphoma
Feng SHI ; Tao LIU ; He HUANG ; Caifu FANG ; Shaoxing GUAN ; Zhang ZHANG ; Zhao WANG ; Xiaojie FANG ; Zhuojia CHEN ; Shu LIU
China Pharmacy 2025;36(13):1641-1647
		                        		
		                        			
		                        			OBJECTIVE To explore the effects of CD20 coding gene (MS4A1) polymorphism on the blood concentration and efficacy of rituximab in patients with non-Hodgkin’s lymphoma. METHODS A prospective observational study was conducted on 160 newly diagnosed non-Hodgkin’s lymphoma patients who received the R-CHOP regimen at the Sun Yat Sen University Cancer Center from January 2016 to December 2020, with a minimum follow-up period of approximately 5 years. The blood concentration of rituximab was detected by enzyme-linked immunosorbent assay. MS4A1 tagSNPs were selected by Haploview4.2 software, including rs1051461, rs17155034, rs4939364, and rs10501385. The genotype of MS4A1 was detected by Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. Univariate linear regression analysis was employed to examine the correlation between various factors(demographic, clinical, and genotypic variables) in patients and the steady-state trough concentration of rituximab during the first course of treatment, followed by multivariate linear regression analysis. Kaplan-Meier curves were drawn to evaluate progression-free survival (PFS) and overall survival (OS). Using MS4A1 genotype and tumor stage as independent variables, Cox regression model was employed to evaluate the factors influencing patient prognosis. RESULTS The blood concentration of rituximab in MS4A1 rs10501385 CC carriers was 15.20 μg/mL,which was significantly lower than 21.95 μg/mL in AA+AC carriers (P<0.05). The multivariate linear regression model incorporating tumor stage and MS4A1 rs10501385 polymorphism explained 7.3% of the interindividual variability in rituximab concentrations. Compared with MS4A1 rs1051461 CC carriers, CT+TT carriers had significantly prolonged PFS and OS (P<0.05). The Cox proportional hazards regression model showed that the MS4A1 rs1051461 CC genotype (HR=4.406, 95%CI:1.743-11.137, P<0.05) and tumor Ⅲ&Ⅳ (HR=3.233, 95%CI: 1.413-7.399, P<0.05) were independent risk factors for PFS. CONCLUSIONS The tumor staging and MS4A1 rs10501385 polymorphism are key influencing factors for blood concentration of rituximab, and MS4A1 rs1051461 polymorphism significantly affects PFS in non-Hodgkin’s lymphoma patients.
		                        		
		                        		
		                        		
		                        	
5.Therapeutic effect and mechanism of hordenine on ovalbumin-induced allergic rhinitis in rats
Junyan LI ; Tao LIU ; Fang SUN ; Jiahui HUANG ; Shuzhen MAO ; Jing YAO
Journal of China Pharmaceutical University 2025;56(1):80-90
		                        		
		                        			
		                        			To investigate the therapeutic effect and related mechanisms of hordenine on ovalbumin (OVA)-induced allergic rhinitis (AR) in rats, HE and AB-PAS staining were used to detect the improvement of pathological damage to the nasal mucosa induced by hordenine. ELISA was employed to detect the effect of hordenine on OVA-sIgE in serum and IL-4 in the nasal mucosa supernatant of rats. IHC and Western blot experiments were undertaken to examine the effect of hordenine on Th1/Th2 cell balance. Bioinformatics analysis was performed to predict pathways, which were verified by in vivo and in vitro experiments. The experimental results showed that hordenine could alleviate the behavioral manifestations of OVA-induced AR rats, alleviate nasal mucosal pathological damage caused by AR, and reduce the secretion of OVA-sIgE and IL-4. In addition, hordenine could regulate the Th1/Th2 balance. Bioinformatics analysis results showed that the potential pathway of action of hordenine on AR was the phosphoinositide 3 kinase (PI3K)/protein kinase B (Akt) signaling pathway. The in vivo experimental results showed that the expression of PI3K and p-Akt proteins in the nasal mucosa of the model group rats was significantly increased (P < 0.01), and that the protein expression level was significantly decreased after the administration of hordenine, which was also confirmed by an in vitro experiment. This study suggests that hordenine may regulate Th1/Th2 cell balance through the PI3K/Akt signaling pathway, thereby exerting an alleviating effect on OVA-induced AR.
		                        		
		                        		
		                        		
		                        	
6.Efficacy of pudendal nerve modulation in the treatment of female pudendal neuralgia
Ziqin ZHOU ; Xin SONG ; Yinjun GU ; Tingting LYU ; Weilin FANG ; Jin HUANG ; Jianwei LYU ; Zhikang CAI ; Zhong WANG
Journal of Modern Urology 2025;30(5):395-399
		                        		
		                        			
		                        			Objective: To investigate the clinical efficacy and safety of pudendal nerve modulation (PNM) in the treatment of female pudendal neuralgia (PN),so as to promote the clinical application of this technique. Methods: A retrospective analysis was conducted on 20 female PN patients who failed conservative treatment at Gongli Hospital during Nov.2020 and Oct.2023.All patients underwent simultaneous PNM and sacral nerve modulation (SNM) with the assistance of 3D printing navigation.Dual-stage test electrodes for PNM and SNM were implanted,followed by alternate therapeutic trial for each modality.Secondary conversion rates and longitudinal outcomes,including visual analogue score (VAS),patient health questionnaire-9 (PHQ-9),and quality of life (QoL) scores were compared preoperatively,post-stage Ⅰ,and at 3,6,and 12 months post-stage Ⅱ. Results: All operations were successful.After the trial phase,the secondary conversion rate for PNM was significantly higher than that for SNM; 16 patients (16/20,80%) chose the second-phase PNM implantation surgery,3 (3/20,15%) chose second-phase SNM implantation,and 1 (1/20,5%) had electrodes removed due to ineffective results from both trials.Further assessment revealed that the improvements in VAS,PHQ-9,and QoL scores for PNM patients were significantly better than those for SNM patients after the first phase of surgery and at 3,6 and 12 months after the second-phase conversion (P<0.05).No complications such as electrode migration or infection were observed during the follow-up of 12-15 months. Conclusion: PNM provides more effective relief of pain symptoms and improvements in depressive states for female PN patients compared to SNM.With the assistance of 3D printing navigation,the operation is simple and safe,and offers stable therapeutic effects.It is worthy of clinical promotion and application.
		                        		
		                        		
		                        		
		                        	
7.Mechanism of Shenqi guben formula in improving cancer-related fatigue by regulating IL-17 signaling pathway
Xin LI ; Chongkai FANG ; Yue HUANG ; Yaoxuan LI ; Haifu HUANG ; Xianlin WU ; Zhesheng CHEN ; Meng LI
China Pharmacy 2025;36(14):1722-1729
		                        		
		                        			
		                        			OBJECTIVE To explore the mechanism of Shenqi guben formula (SQGB) in improving cancer-related fatigue (CRF) based on network pharmacology and cellular experiments. METHODS Active components of SQGB and CRF-related targets were identified on the basis of databases such as the Traditional Chinese Medicine Systems Pharmacology platform. An in vitro CRF cell model was established by inducing A549 cells with interleukin-17 (IL-17). Cells were treated with low (1.0 mg/mL) or high (1.5 mg/mL) concentrations of SQGB. The effects on cell viability, migration, apoptosis, inflammatory factors, mRNA expression, apoptosis-related proteins and key proteins 011) of IL-17 signaling pathway were evaluated using scratch assay, flow cytometry, ELISA, real-time fluorescent quantitative PCR and Western blot analysis. RESULTS SQGB contained 84 active components acting on 209 potential CRF targets. Among E-these, quercetin, kaempferol, and luteolin were identified as the core components of the compound. Core targets included tumor protein p53, AKT serine/threonine kinase 1, IL-6, and tumor necrosis factor (TNF). IL-17, TNF and phosphatidylinositol-3- kinase-serine/threonine protein kinase (PI3K/Akt) signaling pathways were identified as crucial pathways. Compared with IL-17 intervention group, the cell migration rate, B-cell lymphoma 2 (Bcl-2) protein expression, the levels of IL-6 and TNF-α in the supernatant, mRNA expression of IL-17 receptor A (IL-17RA), TNF-α, and IL-6, as well as the protein expression of IL-17RA and nuclear factor kappa-B p65 subunit (p65), and phosphorylated (p)-p65/p65 ratio in IL-17+SQGB low- and high- quality concentration groups were all significantly decreased or down-regulation (P<0.05); the apoptosis rate, expression levels of Bcl-2 associated X protein (Bax) and cleaved caspase-3 protein, the ratio of Bax/Bcl-2, the expression level of p-p38 protein, and the p- p38/p38 ratio were all significantly increased or up-regulated (P<0.05). Moreover, the improvement effects of these indicators were mostly better in the high-quality concentration groups compared to the low-quality concentration groups (P<0.05). CONCLUSIONS SQGB ameliorates CRF by regulating the IL-17 signaling pathway, inhibiting the expression of inflammatory factors, and activating p38 MAPK-dependent apoptosis pathway.
		                        		
		                        		
		                        		
		                        	
8.Study on the mechanism of Cuscuta chinensis flavonoids promoting decidualization and improving recurrent spontaneous abortion
Fang FANG ; Ying CUI ; Jialü HUANG ; Lili CHEN ; Jia XU ; Yunhui WAN
China Pharmacy 2025;36(19):2379-2386
		                        		
		                        			
		                        			OBJECTIVE To explore the mechanism by which Cuscuta chinensis flavonoids (CCF) promote decidualization and improve recurrent spontaneous abortion (RSA). METHODS HTR-8/SVneo cells in logarithmic growth phase were randomly divided into blank group, lipopolysaccharide (LPS) group, CCF group, SGK2 inhibitor (GSK650394, abbreviated as “GSK”) group and CCF+GSK group. Each group was treated with the corresponding agents accordingly. HTR-8/SVneo cells with SGK2 knockdown were randomly divided into small interfering RNA of SGK2 (siSGK2) group and siSGK2+CCF group; additionally, blank group and LPS group were established; each group was treated with the corresponding agents accordingly. The cell survival rate, expression levels of WNK signaling pathway- and decidualization-related proteins and mRNAs, as well as mitochondrial membrane potential levels, were assessed in each group before and after SGK2 knockdown. RSA mice model was constructed and randomly divided into model group, CCF low-dose group, CCF high-dose group, GSK group, and combined dosing group, with 4 mice in each group. Other 4 normal pregnant female mice were selected as the control group. The number of implanted embryos, viable fetuses, and lost embryos in mice was recorded. The morphological changes of endometrium and decidualization were observed, and WNK signaling pathway- and decidualization-related proteins and mRNAs expressing levels as well as mitochondrial membrane potential levels were all detected. RESULTS Compared with the blank group, the cell survival rate, as well as the protein and mRNA expression levels of SGK2, WNK1, WNK4, prolactin, insulin-like growth factor- binding protein-1, oxidative stress responsive kinase 1, and Ste20-like proline-/alanine-rich kinase were significantly reduced in the LPS group (P<0.05); compared with the LPS group, the cell survival rate and the expression levels of the above- mentioned proteins and mRNAs were significantly increased in the CCF group, while the cell survival rate and the expression levels of the above-mentioned proteins and mRNAs were significantly decreased in the GSK group (P<0.05); compared with the CCF group, the cell survival rate and the expression levels of the above-mentioned proteins and mRNAs were significantly reduced in the CCF+GSK group (P<0.05). After knocking down SGK2, compared with the LPS group, the cell survival rate, red/green fluorescence intensity ratio, and the expression levels of the above-mentioned proteins and mRNAs were significantly reduced in the siSGK2 group (P<0.05); compared with the siSGK2 group, the cell survival rate, red/green fluorescence intensity ratio, and the expression levels of the above-mentioned proteins and mRNAs were significantly increased in the siSGK2+CCF group (P<0.05). The in vivo experimental results showed that CCF treatment can significantly improve the number of implanted embryos and viable fetuses in RSA model mice and reduce lost embryos, the expression levels of the above-mentioned proteins and mRNAs in endometrial tissue were significantly increased, and the red/green fluorescence intensity ratio was significantly increased (P< 0.05); the combined dosing group could reverse the effect of CCF (P<0.05). CONCLUSIONS CCF can activate SGK2, up- regulate the WNK signaling pathway, promote endometrial decidualization, and improve RSA.
		                        		
		                        		
		                        		
		                        	
9.Mechanism of Modified Erxian Decoction Regulating Perimenopausal Syndrome via SIRT1/Kisspeptin/GnRH Signaling Pathway
Ruiyu HUANG ; Fang LEI ; Wuchaonan LIU ; Jingjing YANG ; Qianru ZENG ; Shengping LUO ; Yanling CHEN ; Mengge ZHANG ; Fanshun SHEN ; Yihui DENG ; Dingxiang LI
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(22):51-62
		                        		
		                        			
		                        			ObjectiveTo explore the regulation of hypothalamic-pituitary-gonadal (HPG) axis by modified Erxian decoction in rats with perimenopausal syndrome (PMS) and to further analyze the expression of proteins related to the silent information regulator 1 (SIRT1)/hypothalamic kisspeptin (Kisspeptin)/gonadotropin-releasing hormone (GnRH) signaling pathway in the arcuate nucleus region (ARC) of the hypothalamus, so as to reveal the potential target of action and molecular biological mechanism of modified Erxian decoction for the treatment of perimenopausal syndrome. MethodsAn animal model was established via the incomplete castration method, with successful modeling confirmed by the exfoliated cervical cell smear method. The 48 rats were divided into six groups based on the randomization principle after successful modeling, including a sham operation group, a model group, an estradiol valerate group (0.09 mg∙kg-1∙d-1), high-, medium-, and low-dose modified Erxian decoction groups (7.614, 3.807,1.903 5 g∙kg-1∙d-1), with 8 rats in each group. The estradiol valerate group and the high-, medium- and low-dose modified Erxian decoction groups were continuously administered by gavage for 28 days, and the indicators were detected 24 hours after the last administration. Body weights and uterine indices were measured. The pathological changes of the uterus were observed by hematoxylin-eosin (HE) staining. Enzyme-linked immunosorbent assay (ELISA) was performed to measure the levels of estradiol (E2), follicle-stimulating hormone (FSH), luteinizing hormone (LH), and gonadotropin-releasing hormone (GnRH). Real-time quantitative polymerase chain reaction (Real-time PCR) and Western blot were used to determine the expression levels of SIRT1, Kisspeptin, kisspeptin receptor (GPR54), and GnRH in the ARC region of the hypothalamus and gonadotropin-releasing hormone receptor (GnRH-R) in pituitary. ResultsCompared with the sham operation group, rats in the model group had a significantly increased body weight (P0.01), reduced wet weight and index of uterus (P0.01), endometrial thinning or atrophy, glandular atrophy, and a decreasing number of glands. Additionally, serum levels of E2 and the expression of SIRT1 in the ARC region of the hypothalamus significantly decreased (P0.01). Serum levels of FSH, LH, and GnRH, the expression of Kisspeptin, GPR54, and GnRH in the ARC region of the hypothalamus, and GnRH-R in pituitary significantly increased (P0.01). Compared with the model group, the estradiol valerate group and the high-, medium-dose modified Erxian decoction groups had significantly reduced body weight, serum levels of FSH, LH, and GnRH, and expression of Kisspeptin, GPR54, and GnRH in the ARC region of the hypothalamus and GnRH-R in pituitary (P0.05, P0.01) and significantly increased wet weight and index of uterus, serum level of E2, and expression of SIRT1 in the ARC region of the hypothalamus (P0.05, P0.01). In addition, they showed thickened endometrium, increased number of endometrial glands, and improved glandular atrophy. ConclusionModified Erxian decoction regulates the function of the HPG axis through multi-targets, and its mechanism of action may be related to the up-regulation of the expression of SIRT1 in the ARC region of the hypothalamus, the inhibition of the over-activation of the Kisspeptin/GnRH signaling pathway, the regulation of the expression of GnRH-R in the pituitary, the restoration of secretion balance of gonadotropins, and the elevation of the estrogen level. This study provides an experimental basis for the interpretation of the scientific connotation of modified Erxian decoction in the treatment of perimenopausal syndrome and a theoretical reference for the development of a novel therapeutic strategy based on the SIRT1/Kisspeptin/GnRH pathway. 
		                        		
		                        		
		                        		
		                        	
10.Hypoglycemic Effect and Mechanism of ICK Pattern Peptides
Lin-Fang CHEN ; Jia-Fan ZHANG ; Ye-Ning GUO ; Hui-Zhong HUANG ; Kang-Hong HU ; Chen-Guang YAO
Progress in Biochemistry and Biophysics 2025;52(1):50-60
		                        		
		                        			
		                        			Diabetes is a very complex endocrine disease whose common feature is the increase in blood glucose concentration. Persistent hyperglycemia can lead to blindness, kidney and heart disease, neurodegeneration, and many other serious complications that have a significant impact on human health and quality of life. The number of people with diabetes is increasing yearly. The global diabetes prevalence in 20-79 year olds in 2021 was estimated to be 10.5% (536.6 million), and it will rise to 12.2% (783.2 million) in 2045. The main modes of intervention for diabetes include medication, dietary management, and exercise conditioning. Medication is the mainstay of treatment. Marketed diabetes drugs such as metformin and insulin, as well as GLP-1 receptor agonists, are effective in controlling blood sugar levels to some extent, but the preventive and therapeutic effects are still unsatisfactory. Peptide drugs have many advantages such as low toxicity, high target specificity, and good biocompatibility, which opens up new avenues for the treatment of diabetes and other diseases. Currently, insulin and its analogs are by far the main life-saving drugs in clinical diabetes treatment, enabling effective control of blood glucose levels, but the risk of hypoglycemia is relatively high and treatment is limited by the route of delivery. New and oral anti-diabetic drugs have always been a market demand and research hotspot. Inhibitor cystine knot (ICK) peptides are a class of multifunctional cyclic peptides. In structure, they contain three conserved disulfide bonds (C3-C20, C7-C22, and C15-C32) form a compact “knot” structure, which can resist degradation of digestive protease. Recent studies have shown that ICK peptides derived from legume, such as PA1b, Aglycin, Vglycin, Iglycin, Dglycin, and aM1, exhibit excellent regulatory activities on glucose and lipid metabolism at the cellular and animal levels. Mechanistically, ICK peptides promote glucose utilization by muscle and liver through activation of IR/AKT signaling pathway, which also improves insulin resistance. They can repair the damaged pancrease through activation of PI3K/AKT/Erk signaling pathway, thus lowering blood glucose. The biostability and hypoglycemic efficacy of the ICK peptides meet the requirements for commercialization of oral drugs, and in theory, they can be developed into natural oral anti-diabetes peptide drugs. In this review, the structural properties, activity and mechanism of ICK pattern peptides in regulating glucose and lipid metabolism were summaried, which provided a reference for the development of new oral peptides for diabetes. 
		                        		
		                        		
		                        		
		                        	
            
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