1.Compilation Instruction for Expert Consensus on Clinical Application of Binghuang Fule Ointment
Xin CUI ; Yanping BAI ; Ping SONG ; Yuanyuan LI ; Yanming XIE
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):267-273
Compilation instruction for Expert Consensus on Clinical Application of Binghuang Fule Ointment elaborates on the formulation methods and evidence-based basis of the consensus. To address the problems of insufficient evidence on efficacy, vague indications, and a lack of uniform standard for Binghuang Fule Ointment in clinical application, 34 experts from 29 medical institutions across China participated in the compilation under the lead of the Institute of Basic Research in Clinical Medicine and Xiyuan Hospital, China Academy of Chinese Medical Sciences, as well as China-Japan Friendship Hospital. The compilation strictly adhered to the WHO Handbook for Guideline Development (GB/T 1.1—2020), and the Guidance of Instructions for Compiling Expert Consensus on Clinical Practice of Chinese Patent Medicine. Through multidisciplinary collaboration, the compilation was completed using the Grading of Recommendations Assessment, Development and Evaluations (GRADE) evidence grading system. The detailed workflow included various key links. In clinical question construction, 15 items were screened by the nominal group method. In evidence retrieval, Chinese and English databases, along with gray literature, were covered to obtain 116 clinical and 33 pharmaceutical studies. In safety assessment, drug monitoring data and clinical research results were integrated, clarifying local adverse skin reactions and contraindications. Ultimately, 8 recommendations were formed by the GRADE grid method, while 16 consensus suggestions were reached via the majority vote rule. The results showed that the Binghuang Fule Ointment was applicable to eczema, psoriasis, neurodermatitis, tinea pedis, and other diseases. The Consensus also elucidated the syndrome differentiation points, usage and dosage for different diseases (such as adjustment of course and application frequency), as well as the indications of combination medication. Additionally, safety assessment suggested that the Ointment should be used with caution in individuals with skin ulceration or hypersensitivity. To ensure methodological rigor, the compilation process went through three rounds of internal and external expert reviews, while a comprehensive analysis was conducted by literature analysis, the Delphi method, and other methods. This compilation instruction provided methodological support for the clinical transformation of the Consensus through key links, including project initiation, international registration, informed consent, conflict-of-interest statements, evidence evaluation, and popularization. The Consensus will be continuously improved through a dynamic revision mechanism in the future.
2.Compilation Instruction for Expert Consensus on Clinical Application of Binghuang Fule Ointment
Xin CUI ; Yanping BAI ; Ping SONG ; Yuanyuan LI ; Yanming XIE
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(8):267-273
Compilation instruction for Expert Consensus on Clinical Application of Binghuang Fule Ointment elaborates on the formulation methods and evidence-based basis of the consensus. To address the problems of insufficient evidence on efficacy, vague indications, and a lack of uniform standard for Binghuang Fule Ointment in clinical application, 34 experts from 29 medical institutions across China participated in the compilation under the lead of the Institute of Basic Research in Clinical Medicine and Xiyuan Hospital, China Academy of Chinese Medical Sciences, as well as China-Japan Friendship Hospital. The compilation strictly adhered to the WHO Handbook for Guideline Development (GB/T 1.1—2020), and the Guidance of Instructions for Compiling Expert Consensus on Clinical Practice of Chinese Patent Medicine. Through multidisciplinary collaboration, the compilation was completed using the Grading of Recommendations Assessment, Development and Evaluations (GRADE) evidence grading system. The detailed workflow included various key links. In clinical question construction, 15 items were screened by the nominal group method. In evidence retrieval, Chinese and English databases, along with gray literature, were covered to obtain 116 clinical and 33 pharmaceutical studies. In safety assessment, drug monitoring data and clinical research results were integrated, clarifying local adverse skin reactions and contraindications. Ultimately, 8 recommendations were formed by the GRADE grid method, while 16 consensus suggestions were reached via the majority vote rule. The results showed that the Binghuang Fule Ointment was applicable to eczema, psoriasis, neurodermatitis, tinea pedis, and other diseases. The Consensus also elucidated the syndrome differentiation points, usage and dosage for different diseases (such as adjustment of course and application frequency), as well as the indications of combination medication. Additionally, safety assessment suggested that the Ointment should be used with caution in individuals with skin ulceration or hypersensitivity. To ensure methodological rigor, the compilation process went through three rounds of internal and external expert reviews, while a comprehensive analysis was conducted by literature analysis, the Delphi method, and other methods. This compilation instruction provided methodological support for the clinical transformation of the Consensus through key links, including project initiation, international registration, informed consent, conflict-of-interest statements, evidence evaluation, and popularization. The Consensus will be continuously improved through a dynamic revision mechanism in the future.
3.Expert Consensus on Clinical Application of SkinPro Ointment
Xin CUI ; Ping SONG ; Yuanyuan LI ; Yanping BAI ; Yanming XIE
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(9):163-170
SkinPro Ointment is an emulsion-based preparation derived from a traditional Tibetan medical empirical formula and developed using modern pharmaceutical technology. It is an exclusive patented product of Tibet Hairong Tangguo Pharmaceutical Co. Ltd. and has been listed as a National Protected Traditional Chinese Medicine Variety, the Pharmacopoeia of the People's Republic of China, and classified as a Category B product in the National Basic Medical Insurance Catalog. The ointment possesses the functions of clearing heat and drying dampness, activating blood circulation and dispelling wind, relieving itching and reducing inflammation. Clinically, it is used for skin pruritus caused by dampness-heat accumulation or blood-heat with wind-dryness, as well as pruritic skin diseases such as neurodermatitis, eczema, tinea pedis, and psoriasis. To clarify the standards for its clinical application and promote rational drug use, a consensus working group comprising 34 national experts in dermatology, evidence-based medicine, and pharmacy was established. Through expert interviews, the nominal group technique, and questionnaire surveys, 15 clinical issues were identified. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) evidence grading system was employed to assess the quality of evidence, leading to the formulation of the Expert Consensus on the Clinical Application of SkinPro Ointment. This consensus specifies that the intended users are physicians and pharmacists in medical institutions at all levels. It standardizes the clinical application of the ointment, including syndrome characteristics, dosage and course of treatment, combination therapy, precautions, and contraindications. Recommendations and consensus suggestions were formed addressing the 15 clinical issues, covering the following key areas: ①Indications and TCM syndromes: In TCM, the ointment mainly treats conditions such as "damp sores" (Shichuang), "white scaling" (Baibi), "collar sores" (Shelingchuang), and "damp foot Qi" (Jiaoshiqi), corresponding to eczema, psoriasis, neurodermatitis, and tinea pedis in Western medicine. The relevant TCM syndromes are identified as dampness-heat accumulation or blood-heat with wind-dryness. ②Usage and dosage: For external use, apply to the affected area 3 times daily. The dosage should follow the fingertip unit (FTU) principle. A treatment course of 1-2 weeks is recommended for mild to moderate cases; for serious cases, the course should be followed as prescribed by a physician. ③Combined therapy: The ointment can be used as monotherapy for mild cases. For moderate to severe cases, combination therapy is recommended, with reference to relevant clinical guidelines. ④Safety: Common adverse reactions include skin rashes, pruritus, and erythema. The ointment is contraindicated in patients with broken skin or obvious exudation at the affected area, as well as in patients with known hypersensitivity to any of its components. Contact with sensitive areas such as the eyes and oral mucosa should be avoided. Modern research shows that the ointment also has potential efficacy in other dermatological conditions, such as adult atopic dermatitis, tinea cruris, exfoliative keratolysis, acne vulgaris, and Malassezia folliculitis. This consensus provides a scientific basis for promoting the rational clinical use of SkinPro Ointment, improving its therapeutic efficacy, and reducing medication risks. Future updates will be dynamically revised according to emerging clinical issues and new evidence.
4.Highly Sensitive Detection of Water in Organic Solvents Using Pyrene-Phenol-based Fluorescent Probe
Jing LIANG ; Yan-Li WANG ; Cui-Wen JIANG ; Xiao-Chuan HUANG ; Li TANG ; Tao LI ; Yu YA ; De-Jiao NING ; Li-Ping XIE ; Fei-Yan YAN
Chinese Journal of Analytical Chemistry 2025;53(6):894-902,中插1-中插5
A pyrene-phenol-based fluorescent probe PyP which showed typical intramolecular charge transfer(ICT)and monomer-excimer activities was synthesized by using pyrene carboxaldehyde hydrazone and 4-tert-butyl-2,6-diformylphenol as the raw materials.The effects of solvents on PyP were studied,and the results showed that the color of protic polar solvents(Ethanol,N,N-dimethylformamide,methanol and H2O)were successfully identified.Based on the solvent polarity-regulated PyP monomer-excimer switching,the rapid and highly sensitive ratiometric probe,"Turn-off"and"Turn-on"multimodal probes were established for detection of trace water content in organic solvents(Dimethyl sulfoxide,N,N-dimethylformamide,ethanol and methanol),with detection limits(3σ/k)of 0.0021%,0.046%,0.062%and 0.024%.The method was successfully used to detect water content in dimethyl sulfoxide,N,N-dimethy lformamide,ethanol and methanol commercial organic solvents,with recoveries ranging from 97.2%to 108.0%.The developed method showed good accuracy and stability,and had good application prospect.
5.Synthesis of A New Naphthalenesulfonamide-based"Turn-on"Fluorescent Probe for Rapid Detection of Glyphosate
Rong-Rong ZHAO ; Hong-Lin LIU ; Ying-Ping HUANG ; Cui-Wen DENG ; Song-Yan LI ; Shui-Lian YU ; Mao-Sheng TAO ; Yi-Qun TIAN ; Xi YUAN
Chinese Journal of Analytical Chemistry 2025;53(6):903-913
Widespread utilization of glyphosate has led to environmental residues,posing potential threats to ecological systems and human health.Traditional methods for detection of glyphosate are limited by specialized equipment and operational techniques,resulting in inefficient responses.Therefore,it is urgent to develop a convenient,sensitive and accurate detection method for detection of glyphosate.Herein,a new naphthalenesulfonamide-based"Turn-on"fluorescent probe was synthesized using 2-chloroaniline and dansyl chloride as raw materials through a one-step process,which showed a good linear relationship between the glyphosate concentration in concentration range of 0.003-70 μmol/L and the fluorescence intensity(R2=0.995),with a detection limit of 2.73 nmol/L(S/N=3).Analytical techniques such as nuclear magnetic resonance(NMR)spectroscopy and high-resolution mass spectrometry(HRMS)were used to investigate the interaction mechanism between the fluorescent probe and glyphosate.The results indicated that a nucleophilic substitution reaction occurred between the probe and the secondary amine(—NH—)of glyphosate,inducing a photoinduced electron transfer(PET)effect which enhanced the fluorescence intensity by 11.2 times.The probe showed good anti-interference ability towards coexisting metal ions,anions and pesticides in water.When applied to determination of glyphosate in the samples such as tap water,river water(Xiangxi River Reservoir),soil,soybeans,and corn,the spiking recoveries ranged from 94.7%to 109.9%,demonstrating the high accuracy and broad applicability of this detection method.A portable test strip based on this fluorescent probe was developed for rapid semi-quantitative analysis of glyphosate.The developed method was rapid,sensitive,and portable,providing theoretical and technical support for on-site measurement of environmental contaminants.
6.Real-time Analysis of Sulfur,Arsenic,and Copper Contents in Raw Ore Using Laser-Induced Breakdown Spectroscopy
Ming-Ming XU ; Cui-Ping LU ; Tao LI ; Jia-Tao QIN
Chinese Journal of Analytical Chemistry 2025;53(10):1722-1731
Real-time analysis of major element content in raw ore slurry represents a crucial part in mining extraction processes.A self-developed real-time online detection system based on laser-induced breakdown spectroscopy(LIBS)was applied for rapid detection of primary elements in raw ore slurry.Using 72 synchronized samples collected from mining enterprises,with 58 samples allocated for model construction and 14 for validation,this research focused on addressing the industrial requirements for real-time monitoring of sulfur(S),arsenic(As),and copper(Cu)elements.Multiple characteristic spectral lines were selected from LIBS detection system's spectral data.The analytical approach combined multiple linear regression(MLR)for initial model development with partial least squares(PLS)full-spectrum analysis for model refinement,ultimately establishing calibration and prediction models for the three target elements.The results demonstrated that the integrated MLR-PLS methodology achieved high precision,with calibration model determination coefficients(R2)of 0.95,0.97,and 0.99,and prediction model R2 values of 0.96,0.94,and 0.99 for S,As and Cu,respectively.The mean relative prediction errors were 1.65%,2.10%and 0.86%,respectively,which could meet the practical production requirements of mining operations.This approach provided an effective technical solution for real-time quality monitoring in mineral slurry processing.
7.Mechanisms of puerarin-mediated lipid modulation to enhance glucose-lowering effects via hepatic ChREBP/PPARα/PPARγ in vitro.
Can CUI ; Han-Yue XIAO ; Li-Ke YAN ; Zhong-Hua XU ; Wei-Hua LIU ; Hui-Ping LI ; Jun TU
China Journal of Chinese Materia Medica 2025;50(14):3951-3961
This study aims to investigate the in vitro mechanisms underlying the beneficial effects of puerarin on hepatic insulin resistance(IR) based on the carbohydrate response element-binding protein(ChREBP)/peroxisome proliferator-activated receptor(PPAR)α/PPARγ axis involved in glucose and lipid metabolism. An IR-HepG2 cell model was established by treating cells with dexamethasone for 48 h, and the cells were then treated with 10, 20, and 40 μmol·L~(-1) puerarin for 24 h. Glucose levels and output in the extracellular fluid were measured by the glucose oxidase method, while cell viability was assessed by the cell counting kit-8(CCK-8) assay. The adenosine triphosphate(ATP) content and glycogen synthesis were evaluated through chemiluminescence and periodic acid-Schiff staining, respectively. Western blot was employed to quantify the protein levels of forkhead box protein O1(FoxO1), phosphorylated forkhead box protein O1 [p-FoxO1(Ser256)], glucagon, phosphofructokinase, liver type(PFKL), pyruvate kinase L-R(PKLR), pyruvate dehydrogenase complex 1(PDHA1), insulin receptor substrate 2(IRS2), phosphatidylinositol 3-kinase p85(PI3KR1), phosphorylated protein kinase B [p-Akt(Thr308)], glycogen synthase(GYS), glycogen phosphorylase, liver type(PYGL), adiponectin(ADPN), ChREBP, PPARα, and PPARγ. Additionally, the protein levels of acetyl-CoA carboxylase 1(ACC1), phosphorylated ATP citrate lyase [p-ACLY(Ser455)], sterol regulatory element binding protein 1c(SREBP-1c), peroxisome proliferator-activated receptor gamma coactivator 1α(PGC1α), carnitine palmitoyltransferase 1α(CPT1α), and glucagon receptor(GCGR) were also determined. Immunofluorescence was employed to visualize the expression and nuclear location of ChREBP/PPARα/PPARγ. Furthermore, quantitative PCR with the antagonists GW6471 and GW9662 was employed to assess Pparα, Pparγ, and Chrebp. The findings indicated that puerarin effectively reduced both the glucose level and glucose output in the extracellular fluid of IR-HepG2 cells without obvious effect on the cell viability, and it increased intracellular glycogen and ATP levels. Puerarin down-regulated the protein levels of FoxO1 and glucagon while up-regulating the protein levels of p-FoxO1(Ser256), PFKL, PKLR, PDHA1, IRS2, PI3KR1, p-Akt(Thr308), GYS, PYGL, ADPN, ACC1, SREBP-1c, p-ACLY(Ser455), PGC1α, CPT1α, and GCGR in IR-HepG2 cells. Furthermore, puerarin up-regulated both the mRNA and protein levels of ChREBP, PPARα, and PPARγ and promoted the translocation into the nucleus. GW6471 was observed to down-regulate the expression of Pparα while up-regulating the expression of Chrebp and Pparγ. GW9662 down-regulated the expression of Pparγ while up-regulating the expression of Pparα, with no significant effect on Chrebp. In summary, puerarin activated the hepatic ChREBP/PPARα/PPARγ axis, thereby coordinating the glucose and lipid metabolism, promoting the conversion of glucose to lipids to exert the blood glucose-lowering effect.
Isoflavones/pharmacology*
;
Humans
;
PPAR gamma/genetics*
;
Hep G2 Cells
;
Glucose/metabolism*
;
Lipid Metabolism/drug effects*
;
PPAR alpha/genetics*
;
Liver/drug effects*
;
Basic Helix-Loop-Helix Leucine Zipper Transcription Factors/genetics*
;
Insulin Resistance
8.Hypoglycemic effect and mechanism of berberine in vitro based on regulation of BMAL1:CLOCK complex involved in hepatic glycolysis, glucose oxidation a nd gluconeogenesis to improve energy metabolism.
Zhong-Hua XU ; Li-Ke YAN ; Wei-Hua LIU ; Can CUI ; Han-Yue XIAO ; Hui-Ping LI ; Jun TU
China Journal of Chinese Materia Medica 2025;50(15):4293-4303
This paper aims to investigate the hypoglycemic effect and mechanism of berberine in improving energy metabolism based on the multi-pathway regulation of brain and muscle aromatic hydrocarbon receptor nuclear translocal protein 1(BMAL1): cyclin kaput complex of day-night spontaneous output cyclin kaput(CLOCK). The dexamethasone-induced hepatic insulin resistance(IR) HepG2 cell model was used; 0.5, 1, 5, 10, 20 μmol·L~(-1) berberine were administered at 15, 18, 21, 24, 30, 36 h. The time-dose effect of glucose content in extracellular fluid was detected by glucose oxidase method. The optimal dosage and time of berberine were determined for the follow-up study. Glucose oxidase method and chemiluminescence method were respectively performed to detect hepatic glucose output and relative content of ATP in cells; Ca~(2+), reactive oxygen species(ROS), mitochondrial structure and membrane potential were detected by fluorescent probes. Moreover, ultraviolet colorimetry method was used to detect the liver type of pyruvate kinase(L-PK) and phosphoenol pyruvate carboxykinase(PEPCK). In addition, pyruvate dehydrogenase E1 subunit α1(PDHA1), phosphate fructocrine-liver type(PFKL), forkhead box protein O1(FoxO1), peroxisome proliferator-activated receptor gamma co-activator 1α(PGC1α), glucose-6-phosphatase(G6Pase), glucagon, phosphorylated nuclear factor-red blood cell 2-related factor 2(p-Nrf2)(Ser40), heme oxygenase 1(HO-1), NAD(P)H quinone oxidoreductase 1(NQO1), fibroblast growth factor 21(FGF21), uncoupled protein(UCP) 1 and UCP2 were detected by Western blot. BMAL1:CLOCK complex was detected by immunofluorescence double-staining method, combined with small molecule inhibitor CLK8. Western blot was used to detect PDHA1, PFKL, FoxO1, PGC1α, G6Pase, glucagon, Nrf2, HO-1, NQO1, FGF21, UCP1 and UCP2 in the CLK8 group. The results showed that berberine downregulated the glucose content in extracellular fluid in IR-HepG2 cells in a time-and dose-dependent manner. Moreover, berberine inhibited hepatic glucose output and reduced intracellular Ca~(2+) and ROS whereas elevated JC-1 membrane potential and improved mitochondrial structure to enhance ATP production. In addition, berberine upregulated the rate-limiting enzymes such as PFKL, L-PK and PDHA1 to promote glycolysis and aerobic oxidation but also downregulated PGC1α, FoxO1, G6Pase, PEPCK and glucagon to inhibit hepatic gluconeogenesis. Berberine not only upregulated p-Nrf2(Ser40), HO-1 and NQO1 to enhance antioxidant capacity but also upregulated FGF21, UCP1 and UCP2 to promote energy metabolism. Moreover, berberine increased BMAL1, CLOCK and nuclear BMAL1:CLOCK complex whereas CLK8 reduced the nuclear BMAL1:CLOCK complex. Finally, CLK8 decreased PDHA1, PFKL, Nrf2, HO-1, NQO1, FGF21, UCP1, UCP2 and increased FoxO1, PGC1α, G6Pase and glucagon compared with the 20 μmol·L~(-1) berberine group. BMAL1:CLOCK complex inhibited gluconeogenesis, promoted glycolysis and glucose aerobic oxidation pathways, improved the reduction status within mitochondria, protected mitochondrial structure and function, increased ATP energy storage and promoted energy consumption in IR-HepG2 cells. These results suggested that berberine mediated BMAL1:CLOCK complex to coordinate the regulation of hepatic IR cells to improve energy metabolism in vitro.
Humans
;
Berberine/pharmacology*
;
Gluconeogenesis/drug effects*
;
Hep G2 Cells
;
Glucose/metabolism*
;
Liver/drug effects*
;
Energy Metabolism/drug effects*
;
Hypoglycemic Agents/pharmacology*
;
ARNTL Transcription Factors/genetics*
;
Glycolysis/drug effects*
;
Oxidation-Reduction/drug effects*
9.Analysis of risk factors for brucellar spondylitis
Na-na ZHAO ; Mei-gang ZHANG ; Xiang-lei CHEN ; Li ZHAO ; Cui-ping WU
Chinese Journal of Zoonoses 2025;41(3):284-289
The aim of this study was to investigate the risk factors for brucellar spondylitis.Electronic medical record data for patients with brucellosis at Yidu Central Hospital in Weifang City were retrospectively collected from January 2018 to April 2024,including general data,clinical characteristics,and laboratory examinations.The patients were divided into a spinal in-volvement group and a no spinal involvement group.The risk factors for brucellar spondylitis were determined through multi-factorial logistic regression model analysis.Of the 124 patients with brucellosis,59 had brucellar spondylitis,and 65 had bru-cellosis alone.There were more patients with age ≥55 years(x2=17.71),time from onset to diagnosis ≥30 days(x2=26.17),and low back pain(x2=52.71)in the spinal involvement group than in the group without spinal involvement,and the difference was statistically significant(all P<0.001);there were more patients with headaches in the group without spinal in-volvement than in the group with spinal involvement,and the difference was statistically significant(x2=8.34,P<0.05).and there were more patients in the spinal involvement group with neutrophil percent(NEU%)(t=2.94),platelet count(PLT)(t=122.00),blood sedimentation rate(ESR)(Z=-6.74),C-reactive protein(CRP)(Z=-5.74),and interleukin-6(IL-6)(Z=-2.08)were higher in the spine-involved group than in the group without spine-involvement,and the differences were all statistically significant(all P<0.05);Lactate dehydrogenase was significantly lower in the spine-involved group(LDH)than the group without spinal involvement(t=-2.04,P<0.042).A multifactorial logistic regression analysis indicated that a du-ration of out-of-hospital symptoms ≥30 days(OR=6.265,95%CI 1.181-33.241),symptoms of low back pain(OR=14.885,95%CI 3.144-70.472),elevated PLT(OR=1.013,95%CI 1.004-1.023),and elevated ESR(OR=1.053,95%CI 1.008-1.100)were risk factors for brucellar spondylitis(all P<0.05).The optimal cut-off values for ROC analysis were PLT>278.5 ×109/L(sensitivity 89.2%,specificity 59.3%)and ESR>16.5 mm/h(sensitivity 69.2%,specificity of 86.4%);using both PLT and ESR for diagnosis yielded an AUROC of 0.891(95%CI 0.831-0.950),a sensitivity of 86.2%,and a specificity of 84.7%.When patients with brucellosis present with symptoms of low back pain,a time from onset to diagnosis of ≥30 days,and markedly elevated ESR and PLT,lumbar magnetic resonance examination is recommended to rule out brucellar spondylitis,to enable early diagnosis and timely treatment,improve patient prognosis,shorten illness duration,and improve patient quality of life.
10.Electrocardiographic prediction parameters for life-threatening arrhythmic events in congenital long QT syndrome patients
Jing YANG ; Jiangying LUO ; Kun LI ; Dan LI ; Yingchun CUI ; Yuanwei LIU ; Fei SHE ; Rong HE ; Ping ZHANG
Chinese Journal of Cardiology 2025;53(8):906-912
Objective:To analyze the electrocardiogram (ECG) data of congenital long QT syndrome (LQTS) patients, and to identify the ECG parameters for prediction of life-threatening arrhythmic events (LAEs).Methods:This cohort study enrolled patients diagnosed with congenital LQTS at the Department of Cardiology, Beijing Tsinghua Changgung Hospital from September 2014 to May 2023. Baseline clinical and ECG data were collected. Patients were followed with LAEs as the primary endpoint. Based on the occurrence of LAEs, patients were divided into two groups: the event group and the event-free group. Cox regression analysis was used to identify independent predictors of LAEs in LQTS patients.Results:A total of 293 patients diagnosed with congenital LQTS were included, aged 32.5 (19.0, 41.8) years, including 201 females (68.6%). Sixty-six patients experienced LAEs and 227 patients did not. Compared to the event-free group, the event group had a younger onset age (13.0 (5.5, 20.5) years vs. 26.0 (13.0, 35.0) years), a slower heart rate (69.0 (59.5, 76.5) beats/min vs. 77.0 (67.0, 88.0) beats/min), a higher proportion with family history of sudden cardiac death (30.3% vs. 14.5%), as well as longer QT intervals (500.0 (467.0, 594.0) ms vs. 428.0 (402.0, 470.0) ms) and QTc intervals (544.0 (502.5, 589.0) ms vs. 489.0 (480.0, 504.0) ms). Additionally, the event group had higher peak T-wave alternans value (65.0 (42.5, 85.3) μV vs. 44.0 (36.0, 54.0) μV), a higher proportion of patients with documented torsades de pointes (TdP) or ventricular fibrillation (VF) on 24-hour Holter monitoring (39.3% vs. 4.9%), and higher rates of pharmacological treatment (100.0% vs. 9.7%) and device therapy or left cardiac sympathetic denervation (45.5% vs. 2.2%) (all P<0.05). Multivariate Cox regression analysis identified that the heart rate<60 beats/min ( HR=2.0, 95% CI: 1.0-3.7) and QTc interval ≥500 ms ( HR=2.9, 95% CI: 1.5-5.6) on 12-lead ECG, as well as peak T-wave alternans value ≥55.5 μV ( HR=3.2, 95% CI: 1.3-7.8) and documented TdP or VF ( HR=2.0, 95% CI: 1.1-3.7) on 24-hour Holter monitoring were independent predictors of LAEs in LQTS patients (all P<0.05). Conclusion:Heart rate <60 beats/min and QTc interval ≥500 ms on 12-lead ECG, along with peak T-wave alternans value ≥55.5 μV and documented TdP or VF on 24-hour Holter monitoring, have been identified as independent predictors of LAEs in patients with LQTS. These ECG parameters may serve as valuable early indicators of sudden cardiac death in LQTS patients.

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