1.Analysis of anterior chamber angle structural changes and associated factors after implantable collamer lens with central-port implantation
Yanping WU ; Jinhao ZHENG ; Yushan FU ; Dongqi YAO ; Ying LI ; Wulian SONG
International Eye Science 2026;26(5):896-904
AIM: To analyze changes in the anterior chamber angle structure in patients with implantable collamer lens with central-port(ICL V4c)implantation, and to investigate their associations with preoperative anterior segment anatomical parameters.METHODS: Retrospective case study. Patients with myopia or myopia combined with astigmatism who underwent ICL V4c implantation in the Refractive Surgery Center of the Department of Ophthalmology, the 2nd Affiliated Hospital of Harbin Medical University between July 2024 and November 2024 were recruited. Preoperative and postoperative uncorrected visual acuity, best-corrected visual acuity, intraocular pressure, anterior chamber angle(ACA), white-to-white distance(WTW), anterior chamber depth(ACD), angle to angle distance(ATA), horizontal sulcus-to-sulcus distance(HSTS), vertical sulcus-to-sulcus distance(VSTS),crystalline lens rise(CLR), pupil diameter(PD), iris thickness at 750 μm from the scleral spur(IT750),maximal iris thickness(ITM), iris curvature(I-Curv), and iris cross-sectional area(I-Area), angle opening distance(AOD750), thetrabecular-iris angle(TIA750)and the trabecular-iris space area(TISA750)in the temporal, nasal, superior, and inferior directions,as well as the vault at various postoperative time points were measured.RESULTS: The study involved 40 patients(79 eyes)with myopia or myopia combined with astigmatism who underwent ICL V4c implantation(10 males and 30 females)with the mean age of 24.73±3.79 y. Compared with preoperative measurements, at 1 mo postoperatively, the AOD750, TIA750, and TISA750 parameters at the four angles(temporal, nasal, superior, and inferior)all showed a significant reduction(P<0.01). Statistically significant differences in vault were observed at postoperative 1d(0.49±0.1), postoperative 1 wk(0.43±0.14), and postoperative 1 mo(0.41±0.14)(all P<0.001). Correlation analysis indicated that the postoperative state of the anterior chamber angle was jointly influenced by anterior chamber parameters(ACD, ATA, HSTS、VSTS), iris morphology(I-Area, IT750), pupil size(PD), and surgical factors(ICL size, early vault), and that the combination of influencing factors varied across different orientations. Regression analysis showed that ACD was positively correlated with all postoperative anterior chamber angle parameters(P<0.05). IT750 exhibited negative correlations with the temporal and inferior angles(P<0.05). I-Area was positively correlated with temporal AOD750 and TISA750(P<0.05), and PD had negative correlations with temporal TIA750 and nasal AOD750(P<0.05).CONCLUSION: Postoperative anterior chamber angle narrowing is a common phenomenon after ICL V4c implantation. The degree of change exhibits a significant correlation with multiple preoperative anterior segment anatomical parameters. Preoperative comprehensive assessment of ACD, PD, and IT750 may facilitate the evaluation of the risk of postoperative angle changes and the enhancement of surgical safety.
2.Establishment and application of the method for plasma concentration determination of lamotrigine,levetiracetam and perampanel in children with epilepsy
Wenlin SONG ; Ying ZHOU ; Haoran CHEN ; Ziyue LIN ; Yan LI ; Jie LIU ; Taiwei JIN ; Xuqiang ZHOU
China Pharmacy 2026;37(10):1313-1317
OBJECTIVE To establish a method for simultaneous determination of plasma concentration of lamotrigine(LTG), levetiracetam(LEV) and perampanel(PER) in children with epilepsy and apply this method in clinical practice. METHODS Plasma proteins were precipitated with acetonitrile. Using PER-D 5 as internal standard, ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method was adopted. The determination was performed on ACQUITY UPLC HSS T3 C 18 column with mobile phase consisted of 0.1% formic acid with 5 mmol/L ammonium acetate-acetonitrile (gradient elution) at the flow rate of 0.3 mL/min. The column temperature was 40 ℃, and sample size was 5 μL. The analysis time was 5 min. The electrospray ionization source and multiple reaction monitoring mode were used for positive ion scanning. The ion pairs used for quantitative analysis of LTG, LEV, PER and internal standard were m / z 255.9→144.9, m / z 171.1→126.1, m / z 350.1→219.0 and m / z 354.9→220.2, respectively. The steady-state trough concentrations of the aforementioned drugs in the plasma of 14 pediatric epilepsy patients receiving combination therapy were determined using the same UPLC-MS/MS method as above. RESULTS The linear ranges of LTG, LEV and PER were 0.15-24 μg/mL ( R 2 >0.993), 0.312 5-50 μg/mL ( R 2 >0.997) and 6.25-1 000 ng/mL ( R 2 >0.997), respectively. The lower limits of quantification were 0.15 μg/mL, 0.312 5 μg/mL and 6.25 ng/mL, respectively. RSDs of intraday and interday precision tests of the three drugs were no more than 9.83%, and the accuracies (relative errors) were between -9.33% and 13.72%( n =6 or n =18); the average extraction recovery rates were 86.4%-97.9%, and the average matrix effects were 86.9%-110.0% ( n =6). The absolute values of the relative errors in the stability tests were all below 15%. The steady-state trough concentrations of LTG, LEV and PER were (5.64±4.03)μg/mL, (10.67±8.78)μg/mL and(450.20±251.27)ng/mL, respectively; the rates of achieving target trough concentrations were 71.4%, 37.5% and 84.6%, respectively. CONCLUSIONS The established UPLC-MS/MS method is specific, rapid and suitable for the plasma concentration monitoring in epileptic children receiving combination therapy.
3.Exploring Mechanism of Xiaojinwan-containing Serum in Inhibiting Breast Cancer Cells Based on Wnt/β-catenin Signaling Pathway
Hongdi TANG ; Xiaobo JIN ; Chen GAO ; Hongkai LI ; Zhiming LI ; Lu YAO ; Fengli SONG ; Ning KANG ; Wenwen WANG ; Ying SUN ; Zhibin WANG ; Tong LI ; Yingli ZHU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(17):13-22
ObjectiveTo investigate the role and underlying mechanism of the Wnt/β-catenin signaling pathway in the process of Xiaojinwan (XJW)-containing serum interfering with endothelial-mesenchymal transition (EMT) in human breast cancer MDA-MB-231 cells. MethodsXJW-containing serum was prepared by intragastric administration of XJW (4 g·kg-1) to SD rats. MDA-MB-231 cells were cultured in vitro. β-Catenin overexpression and knockdown plasmids were constructed and transfected into MDA-MB-231 cells. The optimal XJW-containing serum (4 g·kg-1) according to previous studies was used for β-catenin intervention and overexpression experiments. The groups for intervention/overexpression experiments included intervention/overexpression blank group, β-catenin intervention/overexpression group, intervention/overexpression blank + XJW group, and β-catenin intervention/overexpression + XJW group. Cell morphology was observed under a microscope. Flow cytometry was used to detect and record apoptosis rates. Western blot was performed to measure apoptosis-related proteins [B-cell lymphoma 2 (Bcl-2), Bcl-2-associated X protein (Bax), and active-Caspase-3] and EMT-related proteins (E-cadherin, N-cadherin, and vimentin). Real-time polymerase chain reaction (Real-time PCR) was used to detect β-catenin mRNA expression levels in different groups. ResultsIntervention experiment results showed that compared with the intervention blank group, the β-catenin intervention group and the intervention blank + XJW group showed increased apoptosis rates (P<0.05, P<0.01), elevated protein levels of Bax, active Caspase-3, and E-cadherin (P<0.05, P<0.01), and decreased protein levels of Bcl-2 and Vimentin (P<0.05, P<0.01). β-catenin mRNA expression was reduced in the β-catenin intervention group (P<0.05, 0.63 ± 0.15) and the intervention blank + XJW group (P<0.05, 0.79 ± 0.33). Compared with the β-catenin intervention group, the β-catenin intervention + XJW group exhibited an increased apoptosis rate (P<0.01), elevated Bax and active Caspase-3 protein levels (P<0.05, P<0.01), and decreased Bcl-2, N-cadherin, and Vimentin protein levels (P<0.05). β-catenin mRNA expression was further reduced in the β-catenin intervention + XJW group (P<0.01, 0.22 ± 0.08). Compared with the intervention blank + XJW group, the β-catenin intervention + XJW group showed an increased apoptosis rate (P<0.01), elevated Bax, active Caspase-3, and E-cadherin protein levels (P<0.05, P<0.01), and decreased Bcl-2, N-cadherin, and vimentin protein levels (P<0.05, P<0.01). β-catenin mRNA expression was also reduced (P<0.05). Overexpression experiment results showed that compared with the overexpression blank group, the β-catenin overexpression group exhibited a reduced apoptosis rate (P<0.01), while the overexpression blank + XJW group showed an increased apoptosis rate (P<0.05). In the β-catenin overexpression and β-catenin overexpression + XJW groups, Bax and E-cadherin protein levels decreased (P<0.05, P<0.01), while Bcl-2, N-cadherin, and vimentin levels increased (P<0.05). In the overexpression blank + XJW group, Bax and E-cadherin levels increased (P<0.05, P<0.01), while Bcl-2, N-cadherin, and vimentin levels decreased (P<0.05, P<0.01). β-catenin mRNA expression increased in the β-catenin overexpression group (P<0.01, 7.26 ± 1.03) but decreased in the overexpression blank + XJW group (P<0.05, 0.73 ± 0.14). Compared with the β-catenin overexpression group, the β-catenin overexpression + XJW group showed an increased apoptosis rate (P<0.01), elevated Bax and E-cadherin levels (P<0.05), and decreased N-cadherin and vimentin levels (P<0.05). β-catenin mRNA expression was reduced (P<0.05, 4.65 ± 1.02). Compared with the overexpression blank + XJW group, the β-catenin overexpression + XJW group exhibited a reduced apoptosis rate (P<0.01), decreased Bax and E-cadherin levels (P<0.01), and increased Bcl-2, N-cadherin, and Vimentin levels (P<0.05). β-catenin mRNA expression increased (P<0.01). ConclusionXJW-containing serum inhibits breast cancer cell proliferation by suppressing EMT, which is associated with the regulation of the Wnt/β-catenin pathway.
4.Factors influencing willingness to participate in health science popularization among medical workers in Guangdong Province
Bingjun SONG ; Ying ZHAO ; Mengxiong WU ; Zhiwei LU ; Fan YANG ; Ping CHEN ; Caiwen LI ; Xibo WANG ; Kun HUANG ; Ziqian ZHENG
China Occupational Medicine 2026;53(2):162-167
Objective To analyze the status of willingness to participate in health science popularization (HSP) and its influencing factors among medical workers in Guangdong Province. Methods A total of 462 medical workers in Guangdong Province were recruited as the study subjects using a stratified convenience sampling method. The Questionnaire on Influencing Factors of Willingness to Participate in Health Science Popularization, developed by the research team, was used to investigate their willingness to participate in HSP and related variables, including previous communication experience, attitude, moral belief, descriptive norm, injunctive norm, self-efficacy, and social support. Hierarchical regression analysis was used to identify the influencing factors of willingness to participate in HSP. Results The median and 25th and 75th percentiles score of willingness to participate in HSP was 4.0 (3.8, 4.5), indicating a moderately high level of willingness. The HSP participation willingness score was positively correlated with scores for previous communication experience, attitude, moral belief, descriptive norm, injunctive norm, self-efficacy, and social support (Spearman correlation coefficients were 0.513, 0.384, 0.507, 0.533, 0.463, 0.556, and 0.435, respectively; all P<0.01). Hierarchical regression analysis showed that previous communication experience, moral belief, descriptive norm and self-efficacy positively predicted willingness to participate in HSP (all P<0.05). Medical workers in the non-Pearl River Delta region had lower willingness than those in the Pearl River Delta region for HSP participation (P<0.05). Conclusion There is still room for improving willingness for HSP participation among healthcare professionals in Guangdong Province. It is recommended to enhance self-efficacy through communication skills training, strengthen professional ethics education, foster a positive peer engagement atmosphere, and intensify resource support and capacity building for HSP in the non-Pearl River Delta region, to improve HSP participation willingness among medical workers in Guangdong Province.
5.Investigation of the current status and related factors of vancomycin-associated acute kidney injury in critically ill patients
Jie LI ; Ying ZHANG ; Danfei SONG ; Kunming PAN ; Xiaoyu LI ; Qianzhou LYU
China Pharmacy 2026;37(16):2144-2149
OBJECTIVE To investigate the incidence and outcomes of vancomycin-associated acute kidney injury (VA-AKI) in critically ill patients, to analyze the independent risk factors for the development of VA-AKI and renal function outcomes in VA-AKI patients, and to evaluate the predictive performance of vancomycin treatment duration for VA-AKI occurrence, so as to provide reference for the rational and safe use of this drug.METHODS Clinical data of critically ill patients who received vancomycin during hospitalization in the intensive care unit of Zhongshan Hospital, Fudan University,from January 2022 to December 2024 were retrospectively collected. Patients were divided into the VA‑AKI group and the non‑AKI group according to the occurrence of VA‑AKI. Multivariate Logistic regression analysis was performed to screen for independent risk factors for VA‑AKI development and renal function outcomes in patients with VA‑AKI. The receiver operating characteristic (ROC) curve was used to analyze the predictive performance of vancomycin treatment duration for VA‑AKI.RESULTS A total of 1 484 patients were enrolled, among whom 287 developed VA‑AKI, with an incidence of 19.3%. The overall median time to onset was 2.5 days after vancomycin administration. Complicated hypertension, cardiac or renal insufficiency, hospital‑acquired sepsis/bacteremia, multiple organ failure, invasive mechanical ventilation during hospitalization, vancomycin treatment duration ≥10 days, and concomitant use of carbapenems or tacrolimus were independent risk factors for VA‑AKI ( P <0.05). Concomitant use of vasopressors was an independent risk factor for renal function outcomes in patients with VA‑AKI ( P <0.05). The area under the ROC curve (AUC) of the model using vancomycin treatment duration of predict the occurrence of VA-AKI was 0.624. At the optimal cut‑off value of 9.7 days, the sensitivity and specificity were 47.4% and 74.9%, respectively.CONCLUSIONS Critically ill patients have a relatively high incidence of VA-AKI, which mostly occurs in the early stage of vancomycin therapy. Patients with underlying cardiac-renal diseases, severe infection, requirement for mechanical ventilation, prolonged vancomycin therapy, and concomitant administration of carbapenems or tacrolimus are at high risk for VA-AKI. Concomitant vasopressor use affects renal function recovery in patients with VA-AKI. The predicted risk of acute kidney injury is higher when vancomycin treatment duration is ≥10 days.
6.Nomogram prediction model for the risk of ICU-acquired weakness in patients with sepsis
Zhen TAN ; Ling YANG ; Lin LI ; Tingting XIANG ; Guirong FANG ; Ying ZHOU ; Qunrong SONG
Journal of Public Health and Preventive Medicine 2026;37(5):150-154
Objective To investigate the risk factors for ICU-acquired weakness (ICU-AW) in patients with sepsis, and to construct a nomogram prediction model. Methods A total of 360 patients with sepsis admitted from January 2020 to December 2025 were enrolled as study subjects. The risk factors for ICU-AW were identified by logistic regression analysis. A nomogram prediction model was constructed, and the model was validated. Results Multivariate logistic regression analysis indicated that age, APACHE II score, duration of mechanical ventilation, duration of immobilization, duration of sedation, and NLR were risk factors for the occurrence of ICU-AW (P<0.05), while ALB was a protective factor (P<0.05). A nomogram model was constructed based on these seven variables. After validation via Bootstrap resampling, ROC curve showed an AUC of 0.949 (0.929–0.969) and a corrected AUC of 0.942 (0.940–0.948), indicating good discrimination degree of the model. Hosmer-Lemeshow test for calibration curve revealed a chi-square value of 10.188 (P=0.252), suggesting that the predicted value of fitting was generally consistent with the actual value. Decision curve analysis demonstrated that when the threshold was in the range of 0.05–0.9, the model had a good net benefit. Conclusion The nomogram prediction model for sepsis ICU-AW based on seven indicators including age, APACHE II score, NLR, ALB, and the durations of mechanical ventilation, immobilization, and sedation exhibits good predictive efficiency and stability. This nomogram prediction model is helpful for the clinical rapid screening of ICU-AW high-risk groups in patients with sepsis, and meets clinical needs for early warning and precise prevention and control.
7.Targeted Protein Degradation-mediated Regulation of Tumor Angiogenesis for Anticancer Therapy
Yi-Ning ZHAO ; Shi-Yu SONG ; Ying-Qiu QI ; Li WANG
Progress in Biochemistry and Biophysics 2026;53(10):2596-2608
Tumor angiogenesis is a core pathological driver of malignant growth, invasion, and metastasis, and represents a major obstacle to effective anticancer therapy. Conventional antiangiogenic agents, including neutralizing monoclonal antibodies and small-molecule tyrosine kinase inhibitors, are constrained by drug resistance, on-target toxicity, and the compensatory activation of alternative pro-angiogenic pathways. Targeted protein degradation (TPD) has emerged as a promising strategy that may overcome these limitations. Unlike traditional inhibitors that operate through an occupancy-driven mechanism, degraders function through an event-driven catalytic mechanism in which a single degrader molecule can catalytically promote the ubiquitination and subsequent proteasomal or lysosomal degradation of multiple molecules of the same target protein, thereby eliminating the target protein together with all of its functions rather than merely blocking a single active site. This review systematically delineates the pathophysiological basis of tumor angiogenesis, encompassing the angiogenic switch driven by hypoxia-inducible factor-1α (HIF-1α), the aberrant structural and functional features of the tumor vasculature, and the self-reinforcing vicious cycles that sustain malignant progression. We then categorize the principal TPD modalities, with particular emphasis on proteolysis-targeting chimeras (PROTACs) and lysosome-targeting chimeras (LYTACs), and describe their design principles and mechanisms of action. PROTACs recruit E3 ubiquitin ligases to direct intracellular targets to the ubiquitin-proteasome system for degradation, whereas LYTACs engage lysosome-targeting receptors to route extracellular and membrane proteins to the lysosome, thereby expanding the degradable target space beyond the intracellular proteome. We further summarize recent advances in the application of TPD to antiangiogenic intervention at four distinct levels. First, at the signaling initiation level, degradation of vascular endothelial growth factor (VEGF) and its receptor vascular endothelial growth factor receptor 2 (VEGFR2) by aptamer-engineered PROTACs, antibody-based LYTACs, and small-molecule VEGFR2 degraders blocks the upstream trigger of the angiogenic cascade. Second, at the signal transduction level, degradation of focal adhesion kinase (FAK), B-Raf proto-oncogene serine/threonine kinase (BRAF), phosphodiesterase 4 (PDE4), and bromodomain-containing protein 4 (BRD4) interrupts intracellular signaling cascades and transcriptional responses. Third, at the microenvironment level, degradation of proviral integration site for Moloney murine leukemia virus (PIM) kinases curtails the pro-angiogenic signals secreted by tumor-associated macrophages. Fourth, multi-target synergistic strategies, exemplified by bispecific degraders that simultaneously target human epidermal growth factor receptor 2 (HER2) and VEGF-A, represent a preliminary exploration of cooperative intervention. Representative degraders reviewed herein elicit diverse antiangiogenic phenotypes, ranging from the direct inhibition of endothelial cell proliferation, migration, and tube formation to reductions in microvessel density and the suppression of vasculogenic mimicry. Finally, we discuss the major challenges that remain, including the precise matching of degradation kinetics with the vascular normalization window, target selectivity and tissue specificity, and the activation of compensatory networks and the emergence of resistance. Since the application of TPD in this setting remains at an early stage, the clinical translation of these approaches will require careful optimization of degradation efficiency, spatiotemporal control, and delivery strategies. We also envision future directions toward immunotherapy-based combination regimens and precision-degradation approaches guided by single-cell and spatial transcriptomics. In our view, TPD should not be regarded merely as a substitute for conventional antiangiogenic drugs, but rather as a molecular tool capable of systematically remodeling the tumor vascular microenvironment. When precise control of degradation efficiency and spatiotemporal regulation are integrated with a thorough understanding of the heterogeneity and compensatory capacity of tumor vessels, the full clinical potential of this strategy can be realized.
8.Observation of the therapeutic effect of rituximab combined with traditional Chinese medicine syndrome differentiation on treating steroid-dependent nephrotic syndrome in children and the regularity of traditional Chinese medicine use
Xia ZHANG ; Xuejun LI ; Tingting XU ; Guang LI ; Yifan LI ; Chundong SONG ; Wensheng ZHAI ; Xianqing REN ; Ying DING
Journal of Beijing University of Traditional Chinese Medicine 2025;48(1):80-90
Objective:
To investigate the efficacy, safety, and traditional Chinese medicine (TCM) medication patterns of rituximab (RTX) combined with TCM on treating children with steroid-dependent nephrotic syndrome (SDNS).
Methods:
One hundred and forty-three children with SDNS who visited the Pediatric Nephrology Department of the First Affiliated Hospital of Henan University of Chinese Medicine from January 2018 to December 2022 were enrolled. A cohort study design was adopted, with " RTX treatment" as the exposure factor. Children who met this exposure factor were assigned to the RTX cohort (RTX, glucocorticoid, immunosuppressive agent, combined with traditional Chinese medicine syndrome differentiation treatment), whereas those who did not were assigned to the basic treatment cohort (glucocorticoid, immunosuppressive agent, combined with traditional Chinese medicine syndrome differentiation treatment ), and followed up for 6 months. The frequency of urinary protein recurrences, urinary protein remission duration, proportion and duration of steroid reduction and cessation, cumulative usage of steroids, proportion of recurrence, recurrence amount of steroid used, efficacy of TCM syndrome, and laboratory and safety indicators after treatment, and height and CD19+ B cell count before and after treatment were compared between the two cohorts. The medication patterns of TCM in the two cohorts were analyzed using frequency statistics, association rule analysis, and systematic clustering analysis.
Results:
Compared with the basic treatment cohort, the RTX cohort showed a decrease in the frequency of urinary protein recurrence, extended sustained remission of urinary protein, an increase in the proportion of steroid reduction and cessation, a shorter duration of steroid reduction and cessation, a decrease in cumulative steroid dosage, a lower recurrence rate, a decrease in CD19+ B cell count, and a decrease in 24-h urinary total protein quantification and the level of cholesterol (P<0.05). No significant difference in the recurrence amount of steroid used, height, TCM syndrome efficacy, albumin, aspartate transaminase, blood urea nitrogen, platelet count, and safety indicators between the two cohorts. Children with SDNS were mostly characterized by qi and yin deficiency syndrome, followed by spleen and kidney yang deficiency syndrome. A total of 175 TCMs were included, including 28 high-frequency drugs such as Huangqi, Fuling, Gancao, Baizhu, Dangshen, and Jiuyurou. The primary use of medication is to nourish the qi and spleen, nourish the kidney, and warm yang. The analysis of association rules yielded eight binary associations and ten three-phase associations, with Huangqi, Baizhu, Fuling, and Dangshen, being the most closely related. Cluster analysis identified four TCM combinations, primarily focusing on tonifying kidney and replenishing essence, benefiting qi and nourishing yin, and removing blood stasis.
Conclusion
RTX combined with TCM syndrome differentiation treatment can reduce the recurrence frequency of SDNS, prolong the remission period, reduce the glucocorticoid dosage, and have no marked effect on height growth. No apparent adverse reactions were observed. TCM should focus on nourishing qi and yin while removing blood stasis.
9.Biosynthesis of ganoderic acid and its derivatives.
Hong-Yan SONG ; Wan YANG ; Li-Wei LIU ; Xia-Ying CHENG ; Dong-Feng YANG ; Zong-Qi YANG
China Journal of Chinese Materia Medica 2025;50(5):1155-1163
Ganoderic acid is a class of lanostane-type triterpenoids found in Ganoderma species, and is one of the most important pharmacologically active components in G. lucidum, exhibiting antioxidant, anti-neuropsychiatric, anti-tumor, and immune-enhancing properties. The content of ganoderic acid in G. lucidum is very low, and the traditional extraction process is complex, yielding minimal amounts at high cost. The biosynthetic pathway of G. lucidum triterpenoids(GLTs), including the synthesis of different structural forms of ganoderic acid from lanosterol, as well as the molecular regulatory mechanisms involving key regulatory enzyme genes and their functions, are not yet fully understood. With the continuous development of synthetic biology technologies, there has been a deeper understanding of the biosynthesis and metabolic regulation pathways of ganoderic acid and its derivatives at the molecular level. Research has explored the key regulatory enzyme genes related to ganoderic acid biosynthesis and their functions. Moreover, through the optimization of synthetic biology and culture conditions, large-scale production and preparation of GLTs at the cellular level have been achieved. This paper reviews and analyzes the latest research progress on the biosynthesis pathways and metabolic regulation of GLTs, focusing on the configuration of ganoderic acid and its derivatives, the biosynthetic pathways, key enzyme genes, transcription factors related to ganoderic acid biosynthesis, signal transduction mechanisms, and factors affecting triterpenoid biotransformation. This review is expected to provide a theoretical basis and technical reference for improving the efficient production of triterpenoid pharmacological components and the exploitation and utilization of G. lucidum resources.
Triterpenes/chemistry*
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Reishi/chemistry*
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Biosynthetic Pathways
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Lanosterol
10.Mechanism of action of ginsenoside Rg_2 on diabetic retinopathy and angiogenesis based on YAP/TLRs pathway.
Zhuo-Rong LIU ; Yong-Li SONG ; Shang-Qiu NING ; Yue-Ying YUAN ; Yu-Ting ZHANG ; Gai-Mei HAO ; Jing HAN
China Journal of Chinese Materia Medica 2025;50(6):1659-1669
Ginsenoside Rg_2(GRg2) is a triterpenoid compound found in Panax notoginseng. This study explored its effects and mechanisms on diabetic retinopathy and angiogenesis. The study employed endothelial cell models induced by glucose or vascular endothelial growth factor(VEGF), the chorioallantoic membrane(CAM) model, the oxygen-induced retinopathy(OIR) mouse model, and the db/db mouse model to evaluate the therapeutic effects of GRg2 on diabetic retinopathy and angiogenesis. Transwell assays and endothelial tube formation experiments were conducted to assess cell migration and tube formation, while vascular area measurements were applied to detect angiogenesis. The impact of GRg2 on the retinal structure and function of db/db mice was evaluated through retinal thickness and electroretinogram(ERG) analyses. The study investigated the mechanisms of GRg2 by analyzing the activation of Yes-associated protein(YAP) and Toll-like receptors(TLRs) pathways. The results indicated that GRg2 significantly reduced cell migration numbers and tube formation lengths in vitro. In the CAM model, GRg2 exhibited a dose-dependent decrease in the vascular area ratio. In the OIR model, GRg2 notably decreased the avascular and neovascular areas, ameliorating retinal structural disarray. In the db/db mouse model, GRg2 increased the total retinal thickness and enhanced the amplitudes of the a-wave, b-wave, and oscillatory potentials(OPs) in the ERG, improving retinal structural disarray. Transcriptomic analysis revealed that the TLR signaling pathway was significantly down-regulated following YAP knockdown, with PCR results consistent with the transcriptome sequencing findings. Concurrently, GRg2 downregulated the expression of Toll-like receptor 4(TLR4), TNF receptor-associated factor 6(TRAF6), and nuclear factor-kappaB(NF-κB) proteins in high-glucose-induced endothelial cells. Collectively, GRg2 inhibits cell migration and tube formation and significantly reduces angiogenesis in CAM and OIR models, improving retinal structure and function in db/db mice, with its pharmacological mechanism likely involving the down-regulation of YAP expression.
Animals
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Ginsenosides/pharmacology*
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Diabetic Retinopathy/physiopathology*
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Mice
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YAP-Signaling Proteins
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Humans
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Male
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Signal Transduction/drug effects*
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Cell Movement/drug effects*
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Adaptor Proteins, Signal Transducing/genetics*
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Mice, Inbred C57BL
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Neovascularization, Pathologic/metabolism*
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Drugs, Chinese Herbal/administration & dosage*
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Panax notoginseng/chemistry*
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Endothelial Cells/metabolism*
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Transcription Factors/genetics*
;
Angiogenesis


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