1.Research Tackling Paradigm and Technological Layout Strategies Based on Erectile Dysfunction, A Clinical Dominant Disease of Traditional Chinese Medicine
Qi ZHAO ; Yun CHEN ; Baoxing LIU ; Xuejun SHANG ; Fei SUN ; Xiaozhi ZHAO ; Zhigang WU ; Chao SUN ; Peihai ZHANG ; Wanjun CHENG ; Xing ZHOU ; Zhan QIN ; Yufeng PAN ; Weiwei TAO ; Jianhuai CHEN ; Mei MO ; Xiaoxiao ZHANG ; Xing ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(7):291-299
To thoroughly implement the strategic deployment outlined in the Opinions of the Central Committee of the Communist Party of China and the State Council on Promoting the Inheritance and Innovative Development of Traditional Chinese Medicine regarding research on dominant diseases of traditional Chinese medicine and to uphold the development philosophy of equal emphasis on traditional Chinese medicine and western medicine,the China Association of Chinese Medicine has fully played a leading academic role by systematically organizing and conducting a series of academic youth salons on clinical dominant diseases of traditional Chinese medicine. On September 13,2024,the 36th Youth Salon on Clinical Dominant Diseases was successfully held in Nanjing,focusing on the advantages of traditional Chinese medicine and the integrative traditional Chinese medicine and western medicine in the diagnosis and treatment of erectile dysfunction (ED). The conference brought together leading experts from traditional Chinese medicine,western medicine,and interdisciplinary fields,facilitating in-depth multidisciplinary discussions that led to key consensus on optimizing traditional Chinese medicine treatment protocols for ED,researching and developing new drugs of traditional Chinese medicine,and advancing interdisciplinary development in traditional Chinese medicine. This salon systematically sorted out the clinical strengths and distinctive features of traditional Chinese medicine in the diagnosis and treatment of ED. Based on current research foundations and clinical needs,it identified key directions for future scientific layout and scientific research tackling: (1) Standardization of syndrome differentiation system of traditional Chinese medicine for ED. (2) Optimization and standardization of intervention methods of integrated traditional Chinese medicine and western medicine. (3) High-quality clinical research guided by evidence-based medicine. (4) In-depth analysis of the pharmacological mechanisms of traditional Chinese medicine in the treatment of ED. (5) Clinical translation and application promotion of new drugs of traditional Chinese medicine. (6) Interdisciplinary integration and innovation in traditional Chinese medicine. For each research direction,key focus areas,expected objectives,and clinical value were further refined,along with the establishment of a scientifically sound priority funding level evaluation system. Therefore,building on the series of salons on the ED-focused dominant diseases of traditional Chinese medicine,this paper provides standardized guidance for clinical practice of traditional Chinese medicine in ED management,effectively contributing to the high-quality development of traditional Chinese medicine. It serves as a valuable reference for national scientific and technological strategic layout, research and development decision-making in new drugs of traditional Chinese medicine,research topic planning,and clinical guideline formulation.
2.Effect of Health Failure Mode and Effect Analysis in Optimizing the Management Process of Postoperative Diabetes Insipidus in Children Undergoing Neurosurgery.
Hui-Yun ZHAO ; Xiao-Ying XU ; Bo WU ; Shi TANG ; Xin-Meng LI
Acta Academiae Medicinae Sinicae 2025;47(4):582-589
Objective To investigate the effect of health failure mode and effect analysis(HFMEA)in optimizing the management process of postoperative diabetes insipidus in children undergoing neurosurgery.Methods Based on HFMEA,a management flowchart for postoperative diabetes insipidus in children undergoing neurosurgery was created.Brainstorming was adopted to identify failure modes in the workflow,analyze risk factors,and develop improvement measures,thereby refining the management flowchart.The amelioration and prognosis of diabetes insipidus in these children before(October 2022 to November 2023)and after(January 2024 to February 2025)implementation of the management flowchart were compared.Results The HFMEA-based management process for postoperative diabetes insipidus in children undergoing neurosurgery alleviated the symptoms of diabetes insipidus regarding the number of diabetes insipidus in the pediatric intensive care unit(P=0.006),the average daily urine output in the pediatric intensive care unit(P=0.001),the proportion of electrolyte abnormalities at discharge/transfer(P=0.037),the duration of mechanical ventilation(P=0.007),and the length of stay in the intensive care unit(P=0.001).Conclusion The HFMEA-based management process for postoperative diabetes insipidus in children undergoing neurosurgery is beneficial to the optimization of the management process,the alleviation of postoperative diabetes insipidus,and the improvement of prognosis in these children.
Humans
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Diabetes Insipidus/etiology*
;
Neurosurgical Procedures/adverse effects*
;
Child
;
Postoperative Complications/therapy*
;
Healthcare Failure Mode and Effect Analysis
;
Intensive Care Units, Pediatric
;
Risk Factors
3.Study on mechanism of naringin in alleviating cerebral ischemia/reperfusion injury based on DRP1/LRRK2/MCU axis.
Kai-Mei TAN ; Hong-Yu ZENG ; Feng QIU ; Yun XIANG ; Zi-Yang ZHOU ; Da-Hua WU ; Chang LEI ; Hong-Qing ZHAO ; Yu-Hong WANG ; Xiu-Li ZHANG
China Journal of Chinese Materia Medica 2025;50(9):2484-2494
This study aims to investigate the molecular mechanism by which naringin alleviates cerebral ischemia/reperfusion(CI/R) injury through DRP1/LRRK2/MCU signaling axis. A total of 60 SD rats were randomly divided into the sham group, the model group, the sodium Danshensu group, and low-, medium-, and high-dose(50, 100, and 200 mg·kg~(-1)) naringin groups, with 10 rats in each group. Except for the sham group, a transient middle cerebral artery occlusion/reperfusion(tMCAO/R) model was established in SD rats using the suture method. Longa 5-point scale was used to assess neurological deficits. 2,3,5-Triphenyl tetrazolium chloride(TTC) staining was used to detect the volume percentage of cerebral infarction in rats. Hematoxylin-eosin(HE) staining and Nissl staining were employed to assess neuronal structural alterations and the number of Nissl bodies in cortex, respectively. Western blot was used to determine the protein expression levels of B-cell lymphoma-2 gene(Bcl-2), Bcl-2-associated X protein(Bax), cleaved cysteine-aspartate protease-3(cleaved caspase-3), mitochondrial calcium uniporter(MCU), microtubule-associated protein 1 light chain 3(LC3), and P62. Mitochondrial structure and autophagy in cortical neurons were observed by transmission electron microscopy. Immunofluorescence assay was used to quantify the fluorescence intensities of MCU and mitochondrial calcium ion, as well as the co-localization of dynamin-related protein 1(DRP1) with leucine-rich repeat kinase 2(LRRK2) and translocase of outer mitochondrial membrane 20(TOMM20) with LC3 in cortical mitochondria. The results showed that compared with the model group, naringin significantly decreased the volume percentage of cerebral infarction and neurological deficit score in tMCAO/R rats, alleviated the structural damage and Nissl body loss of cortical neurons in tMCAO/R rats, inhibited autophagosomes in cortical neurons, and increased the average diameter of cortical mitochondria. The Western blot results showed that compared to the sham group, the model group exhibited increased levels of cleaved caspase-3, Bax, MCU, and the LC3Ⅱ/LC3Ⅰ ratio in the cortex and reduced protein levels of Bcl-2 and P62. However, naringin down-regulated the protein expression of cleaved caspase-3, Bax, MCU and the ratio of LC3Ⅱ/LC3Ⅰ ratio and up-regulated the expression of Bcl-2 and P62 proteins in cortical area. In addition, immunofluorescence analysis showed that compared with the model group, naringin and positive drug treatments significantly decreased the fluorescence intensities of MCU and mitochondrial calcium ion. Meanwhile, the co-localization of DRP1 with LRRK2 and TOMM20 with LC3 in cortical mitochondria was also decreased significantly after the intervention. These findings suggest that naringin can alleviate cortical neuronal damage in tMCAO/R rats by inhibiting DRP1/LRRK2/MCU-mediated mitochondrial fragmentation and the resultant excessive mitophagy.
Animals
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Rats, Sprague-Dawley
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Reperfusion Injury/genetics*
;
Flavanones/administration & dosage*
;
Rats
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Dynamins/genetics*
;
Male
;
Brain Ischemia/genetics*
;
Protein Serine-Threonine Kinases/genetics*
;
Signal Transduction/drug effects*
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Humans
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Drugs, Chinese Herbal/administration & dosage*
4.Impact of posterior cruciate ligament resection on the elasticity of the periarticular soft tissue sleeve in the knee joint.
Yun-Feng ZHANG ; De-Jin YANG ; Zhao-Lun WANG ; Yi-Xin ZHOU ; Hao TANG ; Xiang-Dong WU ; Han-Long ZHENG
China Journal of Orthopaedics and Traumatology 2025;38(10):1055-1060
OBJECTIVE:
To evaluate the effects of posterior cruciate ligament(PCL) resection on soft tissue elasticity and knee stability in total knee arthroplasty(TKA).
METHODS:
Six adult cadaveric knee specimens (involving 10 knees) were included in the study. With the assistance of the robotic system(TiRobot Recon, TINAVI, Beijing), total knee arthroplasty (TKA) was performed sequentially using cruciate retaining (CR) prostheses and posterior stabilizing (PS) prostheses. Between the two surgical procedures, the femoral and tibial osteotomy surfaces were not altered;only the posterior cruciate ligament (PCL) was resected and the intercondylar fossa was treated. After installing the femoral trial component, a soft tissue balance solver was used to apply tension ranging from 30 N to 90 N in 5 N increments at 0°, 10°, and 90° of knee flexion. Meanwhile, the medial and lateral joint gaps were measured synchronously. Based on the tension-gap coupling data, the equivalent elastic coefficients of the medial and lateral soft tissue sleeves at different knee flexion angles, as well as the range of the joint line convergence angle (JLCA) under fixed varus-valgus stress, were calculated. Additionally, the gap balance status under 80 N of tension was analyzed. Self-control comparisons of each indicator were conducted before and after PCL resection to analyze the change patterns.
RESULTS:
After PCL resection, in the fully extended position (knee flexion 0°). The medial equivalent elastic coefficient was 32.2 (25.7, 63.3) N·mm-1 for the CR prosthesis and 27.7 (22.0, 51.9) N·mm-1 for the PS prosthesis, and the statistically significant difference (P=0.013). The range of JLCA was 0.41°(0.26, 0.55)° for the CR prosthesis, which was smaller than 0.75° (0.40, 0.98)° for the PS prosthesis, and the difference was statistically significant(P=0.041). At 90° of knee flexion, the medial joint gap was 10.7(10.1, 11.7) mm for the CR prosthesis, which was smaller than 12.1(10.9, 15.1) mm for the PS prosthesis, with a statistically significant difference(P=0.011). No statistically significant differences were observed in other joint gaps.
CONCLUSION
PCL resection reduces the rigidity of the medial soft tissues in the fully extended knee and increases the medial joint gap in the flexed position, thereby affecting knee stability and balance. This finding suggests that PS and CR prostheses may require different morphological designs, and there should be differences in indications and osteotomy strategies between CR-TKA and PS-TKA. CR-TKA is more suitable for patients with preoperative medial soft tissue laxity.
Humans
;
Posterior Cruciate Ligament/physiopathology*
;
Knee Joint/physiopathology*
;
Arthroplasty, Replacement, Knee
;
Elasticity
;
Male
;
Female
;
Middle Aged
;
Aged
;
Biomechanical Phenomena
;
Adult
5.The Valvular Heart Disease-specific Age-adjusted Comorbidity Index (VHD-ACI) score in patients with moderate or severe valvular heart disease.
Mu-Rong XIE ; Bin ZHANG ; Yun-Qing YE ; Zhe LI ; Qing-Rong LIU ; Zhen-Yan ZHAO ; Jun-Xing LV ; De-Jing FENG ; Qing-Hao ZHAO ; Hai-Tong ZHANG ; Zhen-Ya DUAN ; Bin-Cheng WANG ; Shuai GUO ; Yan-Yan ZHAO ; Run-Lin GAO ; Hai-Yan XU ; Yong-Jian WU
Journal of Geriatric Cardiology 2025;22(9):759-774
BACKGROUND:
Based on the China-VHD database, this study sought to develop and validate a Valvular Heart Disease- specific Age-adjusted Comorbidity Index (VHD-ACI) for predicting mortality risk in patients with VHD.
METHODS & RESULTS:
The China-VHD study was a nationwide, multi-centre multi-centre cohort study enrolling 13,917 patients with moderate or severe VHD across 46 medical centres in China between April-June 2018. After excluding cases with missing key variables, 11,459 patients were retained for final analysis. The primary endpoint was 2-year all-cause mortality, with 941 deaths (10.0%) observed during follow-up. The VHD-ACI was derived after identifying 13 independent mortality predictors: cardiomyopathy, myocardial infarction, chronic obstructive pulmonary disease, pulmonary artery hypertension, low body weight, anaemia, hypoalbuminaemia, renal insufficiency, moderate/severe hepatic dysfunction, heart failure, cancer, NYHA functional class and age. The index exhibited good discrimination (AUC, 0.79) and calibration (Brier score, 0.062) in the total cohort, outperforming both EuroSCORE II and ACCI (P < 0.001 for comparison). Internal validation through 100 bootstrap iterations yielded a C statistic of 0.694 (95% CI: 0.665-0.723) for 2-year mortality prediction. VHD-ACI scores, as a continuous variable (VHD-ACI score: adjusted HR (95% CI): 1.263 (1.245-1.282), P < 0.001) or categorized using thresholds determined by the Yoden index (VHD-ACI ≥ 9 vs. < 9, adjusted HR (95% CI): 6.216 (5.378-7.184), P < 0.001), were independently associated with mortality. The prognostic performance remained consistent across all VHD subtypes (aortic stenosis, aortic regurgitation, mitral stenosis, mitral regurgitation, tricuspid valve disease, mixed aortic/mitral valve disease and multiple VHD), and clinical subgroups stratified by therapeutic strategy, LVEF status (preserved vs. reduced), disease severity and etiology.
CONCLUSION
The VHD-ACI is a simple 13-comorbidity algorithm for the prediction of mortality in VHD patients and providing a simple and rapid tool for risk stratification.
6.Analysis of Potential Active Components and Molecular Mechanism of Baoxin Granules Regulating Ferroptosis in Treatment of Heart Failure
Yu CHEN ; Maolin WANG ; Yun WANG ; Yifan ZHAO ; Jing XU ; Hongwei WU ; Fang WANG ; Xiaoang ZHAO ; Youming LI ; Jixiang TIAN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(12):202-209
ObjectiveBased on ultra performance liquid chromatography-quadrupole-time-of-flight mass spectrometry(UPLC-Q-TOF-MS), network pharmacology, molecular docking and cell experiments, the active ingredients, possible targets and molecular mechanisms of Baoxin granules(BXG) regulating ferroptosis in the treatment of heart failure(HF) were explored. MethodsBXG intestinal absorption fluid was prepared by everted gut sac and the chemical composition contained therein were identified by UPLC-Q-TOF-MS. According to the obtained components, the potential targets of BXG were predicted, and the HF-related targets and related genes of ferroptosis were retrieved at the same time, and the intersecting targets were obtained by Venn diagram. In addition, the protein-protein interaction(PPI) network and the component-target network were constructed, and the core components and core targets were obtained by topological analysis. Then Gene Ontology(GO) function and Kyoto Encyclopedia of Genes and Genomes(KEGG) enrichment analysis were performed on the core targets, and molecular docking validation of the key targets and main components was carried out by AutoDockTools 1.5.7. H9c2 cells were used to establish a oxygen-glucose deprivation model, and the protective effect of BXG on cells was investigated by detecting cell viability, cell survival rate and reactive oxygen species(ROS) level. The protein expression levels of signal transducer and activator of transcription 3(STAT3), phosphorylation(p)-STAT3 and glutathione peroxidase 4(GPX4) were detected by Western blot to clarify the regulatory effect of BXG on ferroptosis. ResultsA total of 61 chemical components in BXG intestinal absorption fluid were identified, and network pharmacology obtained 27 potential targets of BXG for the treatment of HF, as well as 139 signaling pathways. BXG may act on core targets such as STAT3, tumor protein p53(TP53), epidermal growth factor receptor(EGFR), JUN and prostaglandin-endoperoxide synthase 2(PTGS2) through core components such as glabrolide and limonin, which in turn intervene in lipid and atherosclerosis, phosphatidylinositol 3-kinase/protein kinase B(PI3K/Akt), endocrine resistance and other signaling pathways to exert therapeutic effects on HF. Molecular docking showed that the docking results of multiple groups of targets and compounds were good. In vitro cell experiments showed that compared with the blank group, the cell viability and survival rate of the model group were significantly decreased, the level of ROS was significantly increased(P<0.01), the expression levels of STAT3, p-STAT3, p-STAT3/STAT3 and GPX4 proteins were significantly decreased(P<0.05, P<0.01). Compared with the model group, the cell viability and survival rate of the BXG group were significantly increased, the ROS level was significantly decreased(P<0.01), the STAT3, p-STAT3, p-STAT3/STAT3 and GPX4 protein levels were significantly increased(P<0.05, P<0.01). ConclusionBXG may inhibit the occurrence of ferroptosis by up-regulating the expression of STAT3 and GPX4, thus exerting a therapeutic effect on HF, and flavonoids may be the key components of this role.
7.Analysis of Potential Active Components and Molecular Mechanism of Baoxin Granules Regulating Ferroptosis in Treatment of Heart Failure
Yu CHEN ; Maolin WANG ; Yun WANG ; Yifan ZHAO ; Jing XU ; Hongwei WU ; Fang WANG ; Xiaoang ZHAO ; Youming LI ; Jixiang TIAN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(12):202-209
ObjectiveBased on ultra performance liquid chromatography-quadrupole-time-of-flight mass spectrometry(UPLC-Q-TOF-MS), network pharmacology, molecular docking and cell experiments, the active ingredients, possible targets and molecular mechanisms of Baoxin granules(BXG) regulating ferroptosis in the treatment of heart failure(HF) were explored. MethodsBXG intestinal absorption fluid was prepared by everted gut sac and the chemical composition contained therein were identified by UPLC-Q-TOF-MS. According to the obtained components, the potential targets of BXG were predicted, and the HF-related targets and related genes of ferroptosis were retrieved at the same time, and the intersecting targets were obtained by Venn diagram. In addition, the protein-protein interaction(PPI) network and the component-target network were constructed, and the core components and core targets were obtained by topological analysis. Then Gene Ontology(GO) function and Kyoto Encyclopedia of Genes and Genomes(KEGG) enrichment analysis were performed on the core targets, and molecular docking validation of the key targets and main components was carried out by AutoDockTools 1.5.7. H9c2 cells were used to establish a oxygen-glucose deprivation model, and the protective effect of BXG on cells was investigated by detecting cell viability, cell survival rate and reactive oxygen species(ROS) level. The protein expression levels of signal transducer and activator of transcription 3(STAT3), phosphorylation(p)-STAT3 and glutathione peroxidase 4(GPX4) were detected by Western blot to clarify the regulatory effect of BXG on ferroptosis. ResultsA total of 61 chemical components in BXG intestinal absorption fluid were identified, and network pharmacology obtained 27 potential targets of BXG for the treatment of HF, as well as 139 signaling pathways. BXG may act on core targets such as STAT3, tumor protein p53(TP53), epidermal growth factor receptor(EGFR), JUN and prostaglandin-endoperoxide synthase 2(PTGS2) through core components such as glabrolide and limonin, which in turn intervene in lipid and atherosclerosis, phosphatidylinositol 3-kinase/protein kinase B(PI3K/Akt), endocrine resistance and other signaling pathways to exert therapeutic effects on HF. Molecular docking showed that the docking results of multiple groups of targets and compounds were good. In vitro cell experiments showed that compared with the blank group, the cell viability and survival rate of the model group were significantly decreased, the level of ROS was significantly increased(P<0.01), the expression levels of STAT3, p-STAT3, p-STAT3/STAT3 and GPX4 proteins were significantly decreased(P<0.05, P<0.01). Compared with the model group, the cell viability and survival rate of the BXG group were significantly increased, the ROS level was significantly decreased(P<0.01), the STAT3, p-STAT3, p-STAT3/STAT3 and GPX4 protein levels were significantly increased(P<0.05, P<0.01). ConclusionBXG may inhibit the occurrence of ferroptosis by up-regulating the expression of STAT3 and GPX4, thus exerting a therapeutic effect on HF, and flavonoids may be the key components of this role.
8.Status of Clinical Practice Guideline Information Platforms
Xueqin ZHANG ; Yun ZHAO ; Jie LIU ; Long GE ; Ying XING ; Simeng REN ; Yifei WANG ; Wenzheng ZHANG ; Di ZHANG ; Shihua WANG ; Yao SUN ; Min WU ; Lin FENG ; Tiancai WEN
Medical Journal of Peking Union Medical College Hospital 2025;16(2):462-471
Clinical practice guidelines represent the best recommendations for patient care. They are developed through systematically reviewing currently available clinical evidence and weighing the relative benefits and risks of various interventions. However, clinical practice guidelines have to go through a long translation cycle from development and revision to clinical promotion and application, facing problems such as scattered distribution, high duplication rate, and low actual utilization. At present, the clinical practice guideline information platform can directly or indirectly solve the problems related to the lengthy revision cycles, decentralized dissemination and limited application of clinical practice guidelines. Therefore, this paper systematically examines different types of clinical practice guideline information platforms and investigates their corresponding challenges and emerging trends in platform design, data integration, and practical implementation, with the aim of clarifying the current status of this field and providing valuable reference for future research on clinical practice guideline information platforms.
9.2,3,5,4′-tetrahydroxyldiphenylethylene-2-O-glucoside Attenuates Cerebral Ischemia-reperfusion Injury via PINK1/LETM1 Signaling Pathway
Hongyu ZENG ; Kaimei TAN ; Feng QIU ; Yun XIANG ; Ziyang ZHOU ; Dahua WU ; Chang LEI ; Hongqing ZHAO ; Yuhong WANG ; Xiuli ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):145-154
ObjectiveTo investigate the mechanism by which 2,3,5,4'-tetrahydroxyldiphenylethylene-2-O-glucoside (THSG) mitigates cerebral ischemia/reperfusion (CI/R) injury by regulating mitochondrial calcium overload and promoting mitophagy. MethodsSixty male SD rats were randomized into sham, model, SAS (40 mg·kg-1), and low-, medium- and high-dose (10, 20, 40 mg·kg-1, respectively) THSG groups, with 10 rats in each group. The middle cerebral artery occlusion/reperfusion (MCAO/R) model was established by the modified Longa suture method. An oxygen-glucose deprivation/reoxygenation (OGD/R) model was constructed in PC12 cells. Neurological deficits were assessed via Zea Longa scoring, and cerebral infarct volume was measured by 2,3,5-triphenyltetrazolium chloride (TTC) staining. Structural and functional changes of cortical neurons in MCAO/R rats were assessed by hematoxylin-eosin and Nissl staining. PC12 cell viability was detected by cell counting kit-8 (CCK-8) assay, and mitochondrial calcium levels were quantified by Rhod-2 AM. Immunofluorescence was used to detect co-localization of PTEN-induced kinase 1 (PINK1) and leucine zipper/EF-hand-containing transmembrane protein 1 (LETM1) in neurons. Transmission electron microscopy (TEM) was employed to observe mitochondrial morphology in neurons. Western blot was employed to analyze the expression of translocase of outer mitochondrial membrane 20 (TOMM20), autophagy-associated protein p62, microtubule-associated protein light chain 3 (LC3), cysteinyl aspartate-specific proteinase-9 (Caspase-9), B-cell lymphoma 2-associated protein X (Bax), and cytochrome C (Cyt C). ResultsCompared with the sham group, the model group exhibited increased infarct volume (P<0.01) and neurological deficit scores (P<0.01), neuronal structure was disrupted with reduced Nissl bodies. (P<0.01), mitochondrial swelling/fragmentation, decreased PINK1/LETM1 co-localization (P<0.01), upregulated protein levels of LC3Ⅱ/LC3Ⅰ, TOMM20, Caspase-9, Bax, and Cyt C (P<0.01), downregulated protein level of p62 (P<0.05), weakened PC12 viability (P<0.01), and elevated mitochondrial calcium level (P<0.01). Compared with the model group, THSG and SAS groups showed reduced infarct volumes (P<0.05,P<0.01) and neurological deficit scores (P<0.05,P<0.01), mitigated mitochondrial damage, and increased PINK1/LETM1 co-localization (P<0.01). Medium/high-dose THSG and SAS alleviated the neurological damage, increased Nissl bodies (P<0.05,P<0.01), downregulated the protein levels of p62, TOMM20, Caspase-9, Bax, and Cyt C (P<0.05,P<0.01), and elevated the LC3Ⅱ/LC3Ⅰ level (P<0.05,P<0.01). High-dose THSG enhanced PC12 cell viability (P<0.01), increased PINK1/LETM1 co-localization (P<0.01), and reduced mitochondrial calcium (P<0.01). ConclusionTHSG may exert the neuroprotective effect on CI/R injury by activating the PINK1-LETM1 signaling pathway, reducing the mitochondrial calcium overload, and promoting mitophagy.
10.2,3,5,4′-tetrahydroxyldiphenylethylene-2-O-glucoside Attenuates Cerebral Ischemia-reperfusion Injury via PINK1/LETM1 Signaling Pathway
Hongyu ZENG ; Kaimei TAN ; Feng QIU ; Yun XIANG ; Ziyang ZHOU ; Dahua WU ; Chang LEI ; Hongqing ZHAO ; Yuhong WANG ; Xiuli ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):145-154
ObjectiveTo investigate the mechanism by which 2,3,5,4'-tetrahydroxyldiphenylethylene-2-O-glucoside (THSG) mitigates cerebral ischemia/reperfusion (CI/R) injury by regulating mitochondrial calcium overload and promoting mitophagy. MethodsSixty male SD rats were randomized into sham, model, SAS (40 mg·kg-1), and low-, medium- and high-dose (10, 20, 40 mg·kg-1, respectively) THSG groups, with 10 rats in each group. The middle cerebral artery occlusion/reperfusion (MCAO/R) model was established by the modified Longa suture method. An oxygen-glucose deprivation/reoxygenation (OGD/R) model was constructed in PC12 cells. Neurological deficits were assessed via Zea Longa scoring, and cerebral infarct volume was measured by 2,3,5-triphenyltetrazolium chloride (TTC) staining. Structural and functional changes of cortical neurons in MCAO/R rats were assessed by hematoxylin-eosin and Nissl staining. PC12 cell viability was detected by cell counting kit-8 (CCK-8) assay, and mitochondrial calcium levels were quantified by Rhod-2 AM. Immunofluorescence was used to detect co-localization of PTEN-induced kinase 1 (PINK1) and leucine zipper/EF-hand-containing transmembrane protein 1 (LETM1) in neurons. Transmission electron microscopy (TEM) was employed to observe mitochondrial morphology in neurons. Western blot was employed to analyze the expression of translocase of outer mitochondrial membrane 20 (TOMM20), autophagy-associated protein p62, microtubule-associated protein light chain 3 (LC3), cysteinyl aspartate-specific proteinase-9 (Caspase-9), B-cell lymphoma 2-associated protein X (Bax), and cytochrome C (Cyt C). ResultsCompared with the sham group, the model group exhibited increased infarct volume (P<0.01) and neurological deficit scores (P<0.01), neuronal structure was disrupted with reduced Nissl bodies. (P<0.01), mitochondrial swelling/fragmentation, decreased PINK1/LETM1 co-localization (P<0.01), upregulated protein levels of LC3Ⅱ/LC3Ⅰ, TOMM20, Caspase-9, Bax, and Cyt C (P<0.01), downregulated protein level of p62 (P<0.05), weakened PC12 viability (P<0.01), and elevated mitochondrial calcium level (P<0.01). Compared with the model group, THSG and SAS groups showed reduced infarct volumes (P<0.05,P<0.01) and neurological deficit scores (P<0.05,P<0.01), mitigated mitochondrial damage, and increased PINK1/LETM1 co-localization (P<0.01). Medium/high-dose THSG and SAS alleviated the neurological damage, increased Nissl bodies (P<0.05,P<0.01), downregulated the protein levels of p62, TOMM20, Caspase-9, Bax, and Cyt C (P<0.05,P<0.01), and elevated the LC3Ⅱ/LC3Ⅰ level (P<0.05,P<0.01). High-dose THSG enhanced PC12 cell viability (P<0.01), increased PINK1/LETM1 co-localization (P<0.01), and reduced mitochondrial calcium (P<0.01). ConclusionTHSG may exert the neuroprotective effect on CI/R injury by activating the PINK1-LETM1 signaling pathway, reducing the mitochondrial calcium overload, and promoting mitophagy.

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