1.Network meta-analysis of non-invasive brain stimulation in the treatment of lower limb motor dysfunction after stroke
Yuanyuan YANG ; Shanshan ZHOU ; Xiaofei CHENG ; Luye FENG ; Jiqin TANG
Chinese Journal of Tissue Engineering Research 2026;30(4):1008-1018
OBJECTIVE:Most of the existing studies are based on traditional Meta-analysis to study the efficacy of single stimulation protocols such as repetitive transcranial magnetic stimulation and transcranial direct current stimulation on lower limb motor dysfunction in stroke patients,and it is not possible to clarify which stimulation protocol is the optimal choice.This study used network meta-analysis to systematically evaluate the clinical efficacy of different regimens of non-invasive brain stimulation in the treatment of lower limb motor dysfunction after stroke.METHODS:CNKI,WanFang,VIP,CBM,PubMed,Medline and Web of Science databases were searched to collect randomized controlled trials on different regimens of non-invasive brain stimulation for lower limb motor dysfunction after stroke from inception to October 1,2024.Data extraction was performed on the included studies.RevMan 5.4.1 software was used for traditional meta-analysis and the quality of the included studies was evaluated.Stata 17.0 software was used for network meta-analysis.RESULTS:(1)A total of 39 studies involving 2 920 patients were included,involving 6 treatment methods:conventional rehabilitation training,high-frequency repetitive transcranial magnetic stimulation,low-frequency repetitive transcranial magnetic stimulation,intermittent theta burst stimulation,continuous theta burst stimulation,and transcranial direct current stimulation.(2)The results of network meta-analysis showed that high-frequency repetitive transcranial magnetic stimulation,low-frequency repetitive transcranial magnetic stimulation,intermittent theta burst stimulation,and transcranial direct current stimulation were superior to conventional rehabilitation training in the Fugl-Meyer assessment for lower extremity motor function.(3)In terms of improving Berg balance scale score,high-frequency repetitive transcranial magnetic stimulation,low-frequency repetitive transcranial magnetic stimulation,and intermittent theta burst stimulation were significantly different from conventional rehabilitation training(P<0.05),and there was a significant difference between high-frequency repetitive transcranial magnetic stimulation and intermittent theta burst stimulation(P<0.05).(4)In improving modified Barthel index and Barthel index,high-frequency repetitive transcranial magnetic stimulation,low-frequency repetitive transcranial magnetic stimulation,intermittent theta burst stimulation,and transcranial direct current stimulation were superior to conventional rehabilitation training.(5)Under the cumulative ranking chart,high-frequency repetitive transcranial magnetic stimulation showed the best efficacy in Fugl-Meyer assessment for lower extremity motor function,Berg balance scale score,modified Barthel index and Barthel index,followed by low-frequency repetitive transcranial magnetic stimulation.CONCLUSION:Both high-and low-frequency repetitive transcranial magnetic stimulation can improve the lower limb motor function and balance function of patients with stroke,and can improve the activities of daily living of patients to varying degrees.Moreover,the effect of high-frequency repetitive transcranial magnetic stimulation is better than that of low-frequency repetitive transcranial magnetic stimulation.
2.Network meta-analysis of non-invasive brain stimulation in the treatment of lower limb motor dysfunction after stroke
Yuanyuan YANG ; Shanshan ZHOU ; Xiaofei CHENG ; Luye FENG ; Jiqin TANG
Chinese Journal of Tissue Engineering Research 2026;30(4):1008-1018
OBJECTIVE:Most of the existing studies are based on traditional Meta-analysis to study the efficacy of single stimulation protocols such as repetitive transcranial magnetic stimulation and transcranial direct current stimulation on lower limb motor dysfunction in stroke patients,and it is not possible to clarify which stimulation protocol is the optimal choice.This study used network meta-analysis to systematically evaluate the clinical efficacy of different regimens of non-invasive brain stimulation in the treatment of lower limb motor dysfunction after stroke.METHODS:CNKI,WanFang,VIP,CBM,PubMed,Medline and Web of Science databases were searched to collect randomized controlled trials on different regimens of non-invasive brain stimulation for lower limb motor dysfunction after stroke from inception to October 1,2024.Data extraction was performed on the included studies.RevMan 5.4.1 software was used for traditional meta-analysis and the quality of the included studies was evaluated.Stata 17.0 software was used for network meta-analysis.RESULTS:(1)A total of 39 studies involving 2 920 patients were included,involving 6 treatment methods:conventional rehabilitation training,high-frequency repetitive transcranial magnetic stimulation,low-frequency repetitive transcranial magnetic stimulation,intermittent theta burst stimulation,continuous theta burst stimulation,and transcranial direct current stimulation.(2)The results of network meta-analysis showed that high-frequency repetitive transcranial magnetic stimulation,low-frequency repetitive transcranial magnetic stimulation,intermittent theta burst stimulation,and transcranial direct current stimulation were superior to conventional rehabilitation training in the Fugl-Meyer assessment for lower extremity motor function.(3)In terms of improving Berg balance scale score,high-frequency repetitive transcranial magnetic stimulation,low-frequency repetitive transcranial magnetic stimulation,and intermittent theta burst stimulation were significantly different from conventional rehabilitation training(P<0.05),and there was a significant difference between high-frequency repetitive transcranial magnetic stimulation and intermittent theta burst stimulation(P<0.05).(4)In improving modified Barthel index and Barthel index,high-frequency repetitive transcranial magnetic stimulation,low-frequency repetitive transcranial magnetic stimulation,intermittent theta burst stimulation,and transcranial direct current stimulation were superior to conventional rehabilitation training.(5)Under the cumulative ranking chart,high-frequency repetitive transcranial magnetic stimulation showed the best efficacy in Fugl-Meyer assessment for lower extremity motor function,Berg balance scale score,modified Barthel index and Barthel index,followed by low-frequency repetitive transcranial magnetic stimulation.CONCLUSION:Both high-and low-frequency repetitive transcranial magnetic stimulation can improve the lower limb motor function and balance function of patients with stroke,and can improve the activities of daily living of patients to varying degrees.Moreover,the effect of high-frequency repetitive transcranial magnetic stimulation is better than that of low-frequency repetitive transcranial magnetic stimulation.
3.Epidemiological characteristics and spatial clustering of brucellosis in Shanxi Province
WEI Zhiyun ; LUO Xiaofei ; YU Yingjie ; HE Yaqin ; YANG qian ; DOU Qiang
Journal of Preventive Medicine 2025;37(8):842-845
Objective :
To analyze the epidemiological characteristics and spatial clustering of brucellosis in Shanxi Province from 2019 to 2023, so as to provide a reference for formulating prevention and control measures of brucellosis.
Methods:
The case data of brucellosis in Shanxi Province from 2019 to 2023 were collected through the Infectious Disease Surveillance System of the Chinese Disease Prevention and Control Information System. The seasonal distribution, population distribution, and region distribution of brucellosis cases were described. Spatial autocorrelation analysis was applied to explore the spatial clustering characteristics of brucellosis.
Results:
A total of 21 241 human brucellosis cases were reported in Shanxi Province from 2019 to 2023, with an average annual reported incidence of 11.87/100 000, showing an upward trend (P<0.05). The peak incidence period was from March to August, with 14 163 cases reported cumulatively, accounting for 66.68% of the total. There were 16 336 male cases and 4 905 female cases, with a male-to-female ratio of 3.33:1. The high-incidence age group was 40-<70 years, with 15 675 cases accounting for 73.80%. The majority of patients were farmers, with 17 926 cases accounting for 84.39%. Spatial autocorrelation analysis showed that there was spatial clustering in the incidence of brucellosis from 2019 to 2023 (all Moran's I>0, P<0.05). The high-high clustering areas were mainly Datong City, and Shuozhou City in northern Shanxi, and Linfen City in the southern Shanxi. The low-low clustering areas were mainly Taiyuan City and Yangquan City in central Shanxi, and Changzhi City and Jincheng City in southeastern Shanxi.
Conclusions
From 2019 to 2023, the reported incidence of brucellosis in Shanxi Province showed an upward trend. The incidence peaked from March to August, and males, middle-aged and elderly people and farmers were the high-risk groups. There was spatial clustering and the high-high clustering areas gradually expanded from northern Shanxi to southern Shanxi.
4.Identification and biomimetic synthesis of iphionanes and cyperanes from Artemisia hedinii and their anti-hepatic fibrosis activity.
Xiaofei LIU ; Xing WANG ; Chunping TANG ; Changqiang KE ; Bintao HU ; Sheng YAO ; Yang YE
Chinese Journal of Natural Medicines (English Ed.) 2025;23(7):871-880
Two novel skeleton sesquiterpenoids (1 and 6), along with four new iphionane-type sesquiterpenes (2-5) and six new cyperane-type sesquiterpenes (7-11), were isolated from the whole plant of Artemisia hedinii (A. hedinii). The two novel skeleton compounds (1 and 6) were derived from the decarbonization of iphionane and cyperane-type sesquiterpenes, respectively. Their structures were elucidated through a comprehensive analysis of spectroscopic data, including high-resolution electrospray ionization mass spectrometry (HR-ESI-MS) and 1D and 2D nuclear magnetic resonance (NMR) spectra. The absolute configurations were determined using electronic circular dichroism (ECD) spectra, single-crystal X-ray crystallographic analyses, time-dependent density functional theory (TDDFT) ECD calculation, density functional theory (DFT) NMR calculations, and biomimetic syntheses. The biomimetic syntheses of the two novel skeletons (1 and 6) were inspired by potential biogenetic pathways, utilizing a predominant eudesmane-type sesquiterpene (A) in A. hedinii as the substrate. All compounds were evaluated in LX-2 cells for their anti-hepatic fibrosis activity. Compounds 2, 8, and 10 exhibited significant activity in downregulating the expression of α-smooth muscle actin (α-SMA), a protein involved in hepatic fibrosis.
Artemisia/chemistry*
;
Sesquiterpenes/chemical synthesis*
;
Molecular Structure
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Humans
;
Liver Cirrhosis/genetics*
;
Biomimetics
;
Plant Extracts/pharmacology*
5.Construction and validation of a novel prognostic risk scoring table for patients with acute-on-chronic liver failure
Zhanhu BI ; Haifeng HU ; Hong DU ; Linxu WANG ; Xiaofei YANG ; Yidi DING ; Jianqi LIAN
Journal of Clinical Hepatology 2025;41(10):2102-2109
ObjectiveTo investigate the clinical features of patients with acute-on-chronic liver failure (ACLF), and to construct a risk scoring table that can accurately predict the prognosis of patients in the early stage. MethodsA retrospective analysis was performed for the clinical data of 502 patients with ACLF who were admitted to Tangdu Hospital, Air Force Medical University, from January 1, 2010 to December 31, 2020 (training set), and the influencing factors for 28-day mortality rate were identified. The 69 ACLF patients who were admitted to Tangdu Hospital, Air Force Medical University, from January 1 to December 31, 2021 were enrolled as the validation set. The independent-samples t test or the Mann-Whitney U test was used for comparison of continuous data between two groups, and the chi-square test or the Fisher’s exact test was used for comparison of categorical data between two groups. A univariate Cox regression analysis was used to obtain the early warning indicators associated with the 28-day prognosis of ACLF patients, and variance inflation factors were used to assess multicollinearity among predictors; a multivariate Cox regression analysis was used to construct a risk model for ACLF prognosis (mortality). A risk scoring table for ACLF prognosis (mortality) was developed based on regression coefficients (β) from the model equation and weight assignments in the nomogram. Internal validation and comparison were performed for the risk model for ACLF prognosis (mortality), the scoring table for ACLF prognosis (mortality), and other scoring models (Child-Turcotte-Pugh [CTP] score, Model for End-Stage Liver Disease [MELD] score, MELD combined with serum sodium concentration [MELD-Na] score, and integrated MELD [iMELD] score) in the training set, while external validation and comprehensive evaluation of the scoring table and the other scoring models were performed in the validation set. The Nagelkerke’s R2 test and the Hosmer-Lemeshow test were used to assess the degree of fitting of the risk model for ACLF prognosis (mortality), the scoring table for ACLF prognosis (mortality), and other scoring models, and fitting curves were plotted. C-index was used to assess the discriminatory ability of the scoring table for ACLF prognosis (mortality) and the other scoring models, and the Z-test was used for comparison of C-index between different models. The decision curve analysis was used to compare the clinical benefits of the scoring table for ACLF prognosis (mortality) and the other scoring models. ResultsThe multivariate Cox regression analysis showed that age (hazard ratio [HR]=1.027, 95% confidence interval [CI]: 1.015 — 1.039, P<0.001), hepatic encephalopathy grade (grade 1: HR=2.928, 95%CI: 1.463 — 5.858, P=0.002; grade 2: HR=3.811, 95%CI: 2.078 — 6.988, P<0.001; grade 3: HR=3.916, 95%CI: 1.917 — 8.001, P<0.001; grade 4: HR=6.966, 95%CI: 4.559 — 10.644, P<0.001), an increase in total bilirubin (TBil) by ≥17.1 μmol/L per day (HR=1.771, 95%CI: 1.248 — 2.513, P=0.001), creatinine (HR=1.005, 95%CI: 1.004 — 1.006, P<0.001), neutrophil count (HR=1.092, 95%CI: 1.060 — 1.126, P<0.001), and international normalized ratio (HR=1.298, 95%CI: 1.187 — 1.418, P<0.001) were independent risk factors associated with the 28-day mortality rate of ACLF patients, and a risk scoring table was constructed for ACLF prognosis (mortality). The Nagelkerke’s R2 test showed that the risk scoring table for ACLF prognosis (mortality) had an R2 value of 0.599 in the training set and 0.722 in the validation set, which were higher than the R2 values of CTP, MELD, MELD-Na, and iMELD scores. The Hosmer-Lemeshow test showed that the risk scoring table for ACLF prognosis (mortality) had a P value of 0.280 in the training set and 0.788 in the validation set. The C-index analysis showed that the scoring table had a higher C-index than the other scoring models in the validation set (all P<0.001), as well as a higher C-index than CTP score in the training set (P<0.001). The decision curve analysis showed that the risk scoring table for ACLF prognosis (mortality) had higher clinical net benefits than the other scoring models. ConclusionCompared with other scoring models currently used in clinical practice, the novel risk scoring table for ACLF prognosis (mortality) constructed based on the six predictive factors of age, hepatic encephalopathy grade, an increase in TBil by ≥17.1 μmol/L per day, creatinine, neutrophil count, and international normalized ratio has a relatively high value in predicting the 28-day prognosis of ACLF patients.
6.Huoxue Jiedu Formulas (活血解毒方药) as an Adjunctive Therapy for Patients with Binding of Stasis and Toxin Syndrome during the Vulnerable Period after Myocardial Infarction:A Prospective Real-World Study
Xiaofei GENG ; Yingxi YANG ; Zhipeng YAN ; Xinbiao FAN ; Xitong SUN ; Boyu ZHU ; Zheng ZHANG ; Yongchun LIANG ; Xiaoyu SHAN ; Junping ZHANG
Journal of Traditional Chinese Medicine 2025;66(23):2467-2474
ObjectiveTo observe the efficacy of Huoxue Jiedu Formulas (活血解毒方药, HJF) as an adjunctive treatement for patients with binding of stasis and toxin syndrome during the vulnerable period after acute myocardial infarction (AMI) percutaneous coronary intervention (PCI) surgery, and to explore its potential mechanism from the perspective of serum neutrophil extracellular traps (NETs). MethodsA total of 129 patients with binding of stasis and toxin syndrome within 6 months after PCI for AMI were enrolled and divided into a treatment group (65 cases) and a control group (64 cases) based on patients' willingness to take Chinese herbal medicine. The control group received standard western medical therapy alone, while the treatment group additionally received HJF, one dose daily. Both groups were treated for four weeks. Before and after treatment, TCM syndrome scores were assessed. Seattle angina questionnaire (SAQ) was used to record angina stability and frequency scores, while the short form-36 health survey (SF-36) was employed to assess quality of life across eight dimensions, including physical functioning, role-physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health. The Pittsburgh sleep quality index (PSQI) was used to evaluate sleep quality, and the patient health questionnaire-15 (PHQ-15) was used to assess psychosomatic symptoms; Duke activity status index (DASI) was used to measure daily physical activity. Serum levels of neutrophil extracellular traps (NET) markers including myeloperoxidase-DNA (MPO-DNA), neutrophil elastase-DNA (NE-DNA), and citrullinated histone H3 (CitH3) were measured in 20 patients from the treatment group. ResultsAfter treatment, TCM syndrome score, PSQI score and PHQ-15 score in both groups significantly decreased, while DASI score, angina stability and frequency scores, and all eight dimensions of the SF-36 scale significantly increased (P<0.05). Compared to the control group, the treatment group had significantly lower TCM syndrome scores and significantly higher DASI, angina stability and frequency scores (P<0.05), as well as higher scores in the SF-36 dimensions of physical functioning, role-physical, social functioning, bodily pain, and vitality (P<0.05). After treatment, serum levels of MPO-DNA, CitH3, and NE-DNA in the treatment group were significantly reduced (P<0.05). ConclusionHJF combined with conventional therapy can significantly improve angina symptoms, TCM syndrome scores, and psychosomatic conditions in patients with binding of stasis and toxin syndrome during the vulnerable period after AMI. It also enhances quality of life, sleep quality, and daily physical activity. The underlying mechanism may be associated with the inhibition of serum NETs level.
7.Establishment and validation of a nomogram prediction model for cognitive impairment in patients with hypertension based on the CHARLS database
Weiye YANG ; Xiaofei GAO ; Han XIAO ; Yuqing WANG
Journal of Chongqing Medical University 2025;50(10):1329-1337
Objective:To establish a predictive model for the risk of cognitive impairment in patients with hypertension.Methods:Data were obtained from the China Health and Retirement Longitudinal Study(CHARLS),and 17 indicators were analyzed,including demographic features,behavioral factors,and health status.The study cohort was randomly divided into a training set(n=2 918)and an internal validation set(n=1 249)at a ratio of 7∶3,and 1 457 patients with hypertension who were treated in Chongqing Traditional Chinese Medicine Hospital from January to December 2024 were included as an external validation set.The least absolute shrinkage and selection operator regression analysis was used to identify predictive variables,and 10-fold cross-validation was used to determine the optimal model.A logistic regression model was used to investigate the risk factors for cognitive impairment in patients with hypertension,and then a nomogram prediction model was established.The calibration curve was used to assess the accuracy of the model,and the area under the ROC curve(AUC)and the decision curve analysis were used to assess the predictive performance of the model.Results:A total of 4167 hypertensive patients aged≥45 years were included from the CHARLS database,among whom 668 had cognitive impairment.The multivariate logistic regression analysis showed that age(odds ratio[OR]=1.408,95%CI=1.040-1.056),sex(OR=0.570,95%CI=0.492-0.660),body mass index(OR=0.931,95%CI=0.914-0.948),educational level(OR=0.235,95%CI=0.200-0.277),place of residence(OR=1.674,95%CI=1.447-1.936),physi-cal activity(OR=0.459,95%CI=0.373-0.562),depression(OR=1.386,95%CI=1.198-1.604),and total cholesterol level(OR=0.997,95%CI=0.995-0.999)were predictive variables.The ROC curve analysis showed that the nomogram model had good performance,with an AUC of 0.814(95%CI=0.802-0.826)in the training set,0.817(95%CI=0.788-0.846)in the internal validation set,and 0.725(95%CI=0.699-0.752)in the external validation set.Conclusion:The nomogram model developed in this study can effectively predict the risk of cognitive impairment in Chinese patients with hyperten-sion and has a good application value.
8.A practice guideline for therapeutic drug monitoring of mycophenolic acid for solid organ transplants.
Shuang LIU ; Hongsheng CHEN ; Zaiwei SONG ; Qi GUO ; Xianglin ZHANG ; Bingyi SHI ; Suodi ZHAI ; Lingli ZHANG ; Liyan MIAO ; Liyan CUI ; Xiao CHEN ; Yalin DONG ; Weihong GE ; Xiaofei HOU ; Ling JIANG ; Long LIU ; Lihong LIU ; Maobai LIU ; Tao LIN ; Xiaoyang LU ; Lulin MA ; Changxi WANG ; Jianyong WU ; Wei WANG ; Zhuo WANG ; Ting XU ; Wujun XUE ; Bikui ZHANG ; Guanren ZHAO ; Jun ZHANG ; Limei ZHAO ; Qingchun ZHAO ; Xiaojian ZHANG ; Yi ZHANG ; Yu ZHANG ; Rongsheng ZHAO
Journal of Zhejiang University. Science. B 2025;26(9):897-914
Mycophenolic acid (MPA), the active moiety of both mycophenolate mofetil (MMF) and enteric-coated mycophenolate sodium (EC-MPS), serves as a primary immunosuppressant for maintaining solid organ transplants. Therapeutic drug monitoring (TDM) enhances treatment outcomes through tailored approaches. This study aimed to develop an evidence-based guideline for MPA TDM, facilitating its rational application in clinical settings. The guideline plan was drawn from the Institute of Medicine and World Health Organization (WHO) guidelines. Using the Delphi method, clinical questions and outcome indicators were generated. Systematic reviews, Grading of Recommendations Assessment, Development, and Evaluation (GRADE) evidence quality evaluations, expert opinions, and patient values guided evidence-based suggestions for the guideline. External reviews further refined the recommendations. The guideline for the TDM of MPA (IPGRP-2020CN099) consists of four sections and 16 recommendations encompassing target populations, monitoring strategies, dosage regimens, and influencing factors. High-risk populations, timing of TDM, area under the curve (AUC) versus trough concentration (C0), target concentration ranges, monitoring frequency, and analytical methods are addressed. Formulation-specific recommendations, initial dosage regimens, populations with unique considerations, pharmacokinetic-informed dosing, body weight factors, pharmacogenetics, and drug-drug interactions are covered. The evidence-based guideline offers a comprehensive recommendation for solid organ transplant recipients undergoing MPA therapy, promoting standardization of MPA TDM, and enhancing treatment efficacy and safety.
Mycophenolic Acid/administration & dosage*
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Drug Monitoring/methods*
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Humans
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Organ Transplantation
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Immunosuppressive Agents/administration & dosage*
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Delphi Technique
9.A preclinical and first-in-human study of superstable homogeneous radiolipiodol for revolutionizing interventional diagnosis and treatment of hepatocellular carcinoma.
Hu CHEN ; Yongfu XIONG ; Minglei TENG ; Yesen LI ; Deliang ZHANG ; Yongjun REN ; Zheng LI ; Hui LIU ; Xiaofei WEN ; Zhenjie LI ; Yang ZHANG ; Syed Faheem ASKARI RIZVI ; Rongqiang ZHUANG ; Jinxiong HUANG ; Suping LI ; Jingsong MAO ; Hongwei CHENG ; Gang LIU
Acta Pharmaceutica Sinica B 2025;15(10):5022-5035
Transarterial radioembolization (TARE) is a widely utilized therapeutic approach for hepatocellular carcinoma (HCC), however, the clinical implementation is constrained by the stringent preparation conditions of radioembolization agents. Herein, we incorporated the superstable homogeneous iodinated formulation technology (SHIFT), simultaneously utilizing an enhanced solvent form in a carbon dioxide supercritical fluid environment, to encapsulate radionuclides (such as 131I,177Lu, or 18F) with lipiodol for the preparation of radiolipiodol. The resulting radiolipiodol exhibited exceptional stability and ultra-high labeling efficiency (≥99%) and displayed notable intratumoral radionuclide retention and in vivo stability more than 2 weeks following locoregional injection in subcutaneous tumors in mice and orthotopic liver tumors in rats and rabbits. Given these encouraging findings, 18F was authorized as a radiotracer in radiolipiodol for clinical trials in HCC patients, and showed a favorable tumor accumulation, with a tumor-to-liver uptake ratio of ≥50 and minimal radionuclide leakage, confirming the feasibility of SHIFT for TARE applications. In the context of transforming from preclinical to clinical screening, the preparation of radiolipiodol by SHIFT represents an innovative physical strategy for radionuclide encapsulation. Hence, this work offers a reliable and efficient approach for TARE in HCC, showing considerable promise for clinical application (ChiCTR2400087731).
10.A novel feedback loop: CELF1/circ-CELF1/BRPF3/KAT7 in cardiac fibrosis.
Yuan JIANG ; Bowen ZHANG ; Bo ZHANG ; Xinhua SONG ; Xiangyu WANG ; Wei ZENG ; Liyang ZUO ; Xinqi LIU ; Zheng DONG ; Wenzheng CHENG ; Yang QIAO ; Saidi JIN ; Dongni JI ; Xiaofei GUO ; Rong ZHANG ; Xieyang GONG ; Lihua SUN ; Lina XUAN ; Berezhnova Tatjana ALEXANDROVNA ; Xiaoxiang GUAN ; Mingyu ZHANG ; Baofeng YANG ; Chaoqian XU
Acta Pharmaceutica Sinica B 2025;15(10):5192-5211
Cardiac fibrosis is characterized by an elevated amount of extracellular matrix (ECM) within the heart. However, the persistence of cardiac fibrosis ultimately diminishes contractility and precipitates cardiac dysfunction. Circular RNAs (circRNAs) are emerging as important regulators of cardiac fibrosis. Here, we elucidate the functional role of a specific circular RNA CELF1 in cardiac fibrosis and delineate a novel feedback loop mechanism. Functionally, circ-CELF1 was involved in enhancing fibrosis-related markers' expression and promoting the proliferation of cardiac fibroblasts (CFs), thereby exacerbating cardiac fibrosis. Mechanistically, circ-CELF1 reduced the ubiquitination-degradation rate of BRPF3, leading to an elevation of BRPF3 protein levels. Additionally, BRPF3 acted as a modular scaffold for the recruitment of histone acetyltransferase KAT7 to facilitate the induction of H3K14 acetylation within the promoters of the Celf1 gene. Thus, the transcription of Celf1 was dramatically activated, thereby inhibiting the subsequent response of their downstream target gene Smad7 expression to promote cardiac fibrosis. Moreover, Celf1 further promoted Celf1 pre-mRNA transcription and back-splicing, thereby establishing a feedback loop for circ-CELF1 production. Consequently, a novel feedback loop involving CELF1/circ-CELF1/BRPF3/KAT7 was established, suggesting that circ-CELF1 may serve as a potential novel therapeutic target for cardiac fibrosis.


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