1.Revision,reliability and validity testing,and development of normative data of Inventory of Alienation Toward Parents in military personnel
Jieying TAN ; Xiaoxiao SUN ; Zongpei DAI ; Chenxuan JIN ; Wenjun XIANG ; Qin DAI
Journal of Army Medical University 2025;47(8):885-892,后插1
Objective To revise the Inventory of Alienation Toward Parents(IAP)and test its reliability and validity in a military population in order to provide a scientific tool for assessing the level and grade of parent-child alienation among military personnel.Methods Whole-cluster stratified random sampling was used to subject 8 641 service members from 8 Army units.Then all participants were surveyed with 18-item adolescent IAP,Beck Depression Inventory-Ⅱ,and Generalized Anxiety Disorder-7.SPSS 27.0 and AMOS 26.0 were used to perform item analysis,exploratory factor analysis(EFA),and confirmatory factor analysis(CFA)to assess reliability and validity.Subsequently,our revised 16-item version of IAP was employed to develop means,percentiles,cut-off scores,and category norms.Results ①Items 3 and 12 were deleted in item analysis.②EFA extracted the original communication and emotional distance factors;CFA indicated that the two-factor model had good fitness,with the mother-child alienation scale:χ2/df=4.248,comparative fit index(CFI)=0.962,Tucker-Lewis index(TLI)=0.929,root mean square error of approximation(RMSEA)=0.028,standardized root mean squared residual(SRMR)=0.023;while the father-child alienation scale:χ2/df=5.41,CFI=0.939,TLI=0.901,RMSEA=0.032,SRMR=0.044.③The internal consistency reliability of the total IAP was good(0.744~0.888).④The total IAP score and scores of the mother-child and father-child subscales were positively correlated with depression and anxiety(r=0.395~0.493,P<0.01).⑤ The average total IAP score for military personnel was 17.27±4.21,and the scores of mother-child alienation and father-child alienation were 8.64±2.26 and 8.62±2.43,respectively.With percentiles of P75 and P90 as the cut-off points,the total IAP score can be stratified into 3 levels,that is,normal(≤16),moderate(17~19),and severe(≥20).Then,additional category norms were developed based on demographic characteristics.Conclusion Our revised 16-item military version of IAP shows good reliability and validity.A preliminary and representative norm is developed primarily,and can be used to assess the level and grade of military parental alienation.
2.Analysis of reoperation causes in unilateral biportal endoscopy for treating lumbar degenerative diseases
Yuquan LIU ; Guangpeng LI ; Xiang LI ; Bin ZHU ; Weiyang ZUO ; Haining TAN ; Ning LIU ; Qi FEI ; Haibo SUN ; Tianqi FAN ; Yong YANG ; Lingjia YU
International Journal of Surgery 2025;52(2):108-113
Objective:To analyze the reoperation rate and causes during the early adoption phase of unilateral biportal endoscopy (UBE).Methods:The clinical data of 180 patients who underwent UBE performed by a single surgeon at Beijing Friendship Hospital, Capital Medical University from October 2021 to June 2023 were retrospectively analyzed. Clinical and imaging data of patients who underwent reoperation were collected to analyze the causes of reoperation, and the clinical efficacy of the reoperations was also followed up. Measurement data were expressed as mean ± standard deviation ( ± s), and t-test was used before and after treatment. Results:A total of 180 patients who underwent UBE were included in this study, of which 6 patients underwent reoperation, and the reoperation rate was 3.33%. Among them, 3 cases occurred in the first 90 surgeries and the other 3 occurred in the subsequent 90 surgeries. The causes of reoperation were as follows: recurrent lumbar disc herniation at the same segment postoperatively in 2 cases, insufficient decompression in 2 cases, disc herniation following isolated decompression in 1 case, and immediate postoperative perianal numbness in 1 case. The time between the initial surgery and reoperation ranged from 0 to 187 days, with an average of 63.3 days. The average follow-up time after reoperation was 18.3 months. The visual analogue scale (VAS) and Oswestry disability index (ODI) scores of the patients at the last follow-up were significantly improved compared with those before operation (VAS score of low back pain: 5.2 ± 1.7 before operation, 1.2 ± 0.8 at the last follow-up, P<0.001; VAS score of leg pain: 7.2 ± 1.5 before operation, 1.2 ± 1.2 at the last follow-up, P<0.001; ODI score: 67.3 ± 5.7 before operation, 20.2 ± 8.2 at the last follow-up, P<0.001). The postoperative modified MacNab scores were generally satisfactory (4 cases were rated as excellent, accounting for 66.7%; 2 cases were rated as good, accounting for 33.3%). Except for one patient who experienced dural injury during open revision surgery, there were no serious complications such as nerve damage. Conclusions:In the early stages of UBE surgery, recurrent lumbar disc herniation and inadequate decompression are the primary reasons for reoperation, typically occurring within the first three months postoperatively. Reoperation does not significantly increase the risk of nerve injury. Enhanced early postoperative follow-up is recommended. For symptomatic patients, a second surgery with thorough decompression can yield satisfactory treatment outcomes.
3.Time trend analysis of the disease burden of colorectal cancer among young and middle-aged adults in China from 1990 to 2021
Jun CHEN ; Dandan TANG ; Yuxin ZHOU ; Yuting TAN ; Honglan LI ; Qun XU ; Yongbing XIANG
Journal of International Oncology 2025;52(8):508-516
Objective:To analyze the disease burden of colorectal cancer (CRC) among young and middle-aged people in China from 1990 to 2021, and to explore the influence of age, period and cohort on the incidence and mortality of CRC in young and middle-aged people of China.Methods:Data on CRC in patients aged 40-59 years in China from 1990 to 2021 were extracted from the Global Burden of Disease Study 2021 (GBD 2021) database. Statistics such as incidence rate, mortality rate, disability-adjusted life years (DALY), and their corresponding age-standardized rates were calculated to analyze the CRC incidence and mortality in different age and sex groups of young and middle-aged Chinese young people from 1990 to 2021. The Joinpoint regression model was used to analyze the CRC incidence, the mortality and the DALY rate, as well as to calculate the annual percentage change (APC) and the average annual percentage change (AAPC). The effects of three independent factors, namely age, period and cohort, on the incidence and mortality of CRC in young and middle-aged people of China were analyzed and evaluated through the age-period-cohort model.Results:From 1990 to 2021, there was a remarkable upward trend in the incidence, mortality, and DALY of CRC among Chinese young and middle-aged adults. In 2021, the number of incidence cases of CRC among young and middle-aged people in China reached 181 000, and the number of deaths reached 57 900, which were 236.80% and 75.48% higher than those in 1990 (53 800 and 33 000, respectively). During the same period, DALY increased by 62.59%, with the 55-59 age group having the largest increase at 83.35%. From 1990 to 2021, the age-standardized incidence rate (ASIR) increased by 49.04%, rising from 25.51/100 000 to 38.02/100 000, and the age-standardized mortality rate (ASMR) declined by 28.75%, decreasing from 17.01/100 000 to 12.12/100 000, respectively. The increase in ASIR was the greatest among the 40-44 age group, reaching 57.31%, while the decline in ASMR was the most significant among the 50-54 age group, amounting to 30.18%. However, the DALY rate declined by 26.66%, from 673.52/100 000 to 493.94/100 000. The decline in DALY was the greatest among the 50-54 age group, reaching 28.26%. Joinpoint regression model analysis showed that, from 1990 to 2021, the incidence of CRC in Chinese young and middle-aged adults rose on average by 1.32% annually, and the increase was higher in men (1.87%) than that in women (0.36%). The mortality rate showed a downward trend, with an average annual decline of 1.10%, with a higher decline in women than in men (-2.14% vs. -0.50%). The DALY rate showed a downward trend, with an average annual decline of 1.00%, and more decline in women than in men (-2.06% vs. -0.41%). All of these trends were statistically significant (all P<0.001). The age-period-cohort model analysis showed that, the net drift of CRC incidence was 1.21% (1.02%-1.41%) per year among Chinese young and middle-aged adults between 1990 and 2021, while the net drift in mortality was -1.40% (-1.59%--1.21%) per year. The impact of age on CRC incidence and mortality intensified with advancing age. Incidence attributable to age rose from 12.66% (11.90%- 13.46%) in the 40-44 age group to 56.68% (54.37%-59.08%) in the 55-59 age group. Similarly, mortality attributable to age increased from 6.47% (6.12%-6.85%) in the 40-44 age group to 25.74% (24.58%-26.96%) in the 55-59 age group. In all age groups, the role of CRC incidence and mortality attributable to age was higher in men than in women. Period effects on the RR value of CRC incidence showed a declining trend followed by an upward trend, with the highest risk during 2015-2019 ( RR=1.36, 95% CI: 1.28-1.43), using 2000-2004 as the reference. For mortality, period effects exhibited a declining trend, with the highest risk during 1990-1994 ( RR=1.23, 95% CI: 1.15-1.32), using 2000-2004 as the reference. Cohort effects indicated that later birth cohorts had higher incidence risks, with the highest incidence observed in the 1973-1977 birth cohort ( RR=1.30, 95% CI: 1.16-1.45), using the 1953-1957 birth cohort as the reference. Conversely, later birth cohorts had lower mortality risks, with the lowest mortality in the 1973-1977 birth cohort ( RR=0.78, 95% CI: 0.69-0.88), using the 1953-1957 birth cohort as the reference. Conclusions:From 1990 to 2021, the changes in the disease burden of CRC among young and middle-aged people in China are manifested as an increase in standardized incidence rate and a decrease in standardized mortality rate. Meanwhile, there are gender differences in the trend of temporal changes. Age, period and cohort all have a significant impact on the incidence and mortality trends of colorectal cancer in young and middle-aged people. Research on the etiology of CRC should be strengthened, and targeted prevention and control strategies should be formulated.
4.Recognition of breath odor map of benign and malignant pulmonary nodules and Traditional Chinese Medicine syndrome elements based on electronic nose combined with machine learning: An observational study in a single center
Shiyan TAN ; Qiong ZENG ; Hongxia XIANG ; Qian WANG ; Xi FU ; Jiawei HE ; Liting YOU ; Qiong MA ; Fengming YOU ; Yifeng REN
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2025;32(02):185-193
Objective To explore the recognition capabilities of electronic nose combined with machine learning in identifying the breath odor map of benign and malignant pulmonary nodules and Traditional Chinese Medicine (TCM) syndrome elements. Methods The study design was a single-center observational study. General data and four diagnostic information were collected from 108 patients with pulmonary nodules admitted to the Department of Cardiothoracic Surgery of Hospital of Chengdu University of TCM from April 2023 to March 2024. The patients' TCM disease location and nature distribution characteristics were analyzed using the syndrome differentiation method. The Cyranose 320 electronic nose was used to collect the odor profiles of oral exhalation, and five machine learning algorithms including random forest (RF), K-nearest neighbor (KNN), logistic regression (LR), support vector machine (SVM), and eXtreme gradient boosting (XGBoost) were employed to identify the exhaled breath profiles of benign and malignant pulmonary nodules and different TCM syndromes. Results (1) The common disease locations in pulmonary nodules were ranked in descending order as liver, lung, and kidney; the common disease natures were ranked in descending order as Yin deficiency, phlegm, dampness, Qi stagnation, and blood deficiency. (2) The electronic nose combined with the RF algorithm had the best efficacy in identifying the exhaled breath profiles of benign and malignant pulmonary nodules, with an AUC of 0.91, accuracy of 86.36%, specificity of 75.00%, and sensitivity of 92.85%. (3) The electronic nose combined with RF, LR, or XGBoost algorithms could effectively identify the different TCM disease locations and natures of pulmonary nodules, with classification accuracy, specificity, and sensitivity generally exceeding 80.00%.Conclusion Electronic nose combined with machine learning not only has the potential capabilities to differentiate the benign and malignant pulmonary nodules, but also provides new technologies and methods for the objective diagnosis of TCM syndromes in pulmonary nodules.
5.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
;
Rats, Sprague-Dawley
;
Reperfusion Injury/genetics*
;
Flavanones/administration & dosage*
;
Rats
;
Dynamins/genetics*
;
Male
;
Brain Ischemia/genetics*
;
Protein Serine-Threonine Kinases/genetics*
;
Signal Transduction/drug effects*
;
Humans
;
Drugs, Chinese Herbal/administration & dosage*
6.Study on the correlation between the distribution of traditional Chinese medicine syndrome elements and salivary microbiota in patients with pulmonary nodules
Hongxia XIANG ; iawei HE ; Shiyan TAN ; Liting YOU ; Xi FU ; Fengming YOU ; Wei SHI ; Qiong MA ; Yifeng REN
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2025;32(05):608-618
Objective To analyze the differences in distribution of traditional Chinese medicine (TCM) syndrome elements and salivary microbiota between the individuals with pulmonary nodules and those without, and to explore the potential correlation between the distribution of TCM syndrome elements and salivary microbiota in patients with pulmonary nodules. Methods We retrospectively recruited 173 patients with pulmonary nodules (PN) and 40 healthy controls (HC). The four diagnostic information was collected from all participants, and syndrome differentiation method was used to analyze the distribution of TCM syndrome elements in both groups. Saliva samples were obtained from the subjects for 16S rRNA high-throughput sequencing to obtain differential microbiota and to explore the correlation between TCM syndrome elements and salivary microbiota in the evolution of the pulmonary nodule disease. Results The study found that in the PN group, the primary TCM syndrome elements related to disease location were the lung and liver, and the primary TCM syndrome elements related to disease nature were yin deficiency and phlegm. In the HC group, the primary TCM syndrome elements related to disease location were the lung and spleen, and the primary TCM syndrome elements related to disease nature were dampness and qi deficiency. There were differences between the two groups in the distribution of TCM syndrome elements related to disease location (lung, liver, kidney, exterior, heart) and disease nature (yin deficiency, phlegm, qi stagnation, qi deficiency, dampness, blood deficiency, heat, blood stasis) (P<0.05). The species abundance of the salivary microbiota was higher in the PN group than that in the HC group (P<0.05), and there was significant difference in community composition between the two groups (P<0.05). Correlation analysis using multiple methods, including Mantel test network heatmap analysis and Spearman correlation analysis and so on, the results showed that in the PN group, Prevotella and Porphyromonas were positively correlated with disease location in the lung, and Porphyromonas and Granulicatella were positively correlated with disease nature in yin deficiency (P<0.05). Conclusion The study concludes that there are notable differences in the distribution of TCM syndrome elements and the species abundance and composition of salivary microbiota between the patients with pulmonary nodules and the healthy individuals. The distinct external syndrome manifestations in patients with pulmonary nodules, compared to healthy individuals, may be a cascade event triggered by changes in the salivary microbiota. The dual correlation of Porphyromonas with both disease location and nature suggests that changes in its abundance may serve as an objective indicator for the improvement of symptoms in patients with yin deficiency-type pulmonary nodules.
7.Application of left internal mammary artery and bilateral radial arteries in off-pump total arterial coronary artery bypass grafting
Shengzhong LIU ; Dachuang WEI ; Bo XIANG ; Jin TAN ; Lu JIANG ; Tao YU ; Keli HUANG
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2025;32(08):1159-1165
Objective To evaluate the safety and efficacy of total arterial off-pump coronary artery bypass grafting (OPCABG) using a left internal thoracic artery (LITA) combined with bilateral radial arteries (RAs). Methods We retrospectively analyzed the clinical data of patients with severe multi-vessel coronary artery disease who underwent total arterial OPCABG with a LITA and bilateral RAs at Sichuan Provincial People’s Hospital from November 2020 to April 2023. Results A total of 24 patients were included, comprising 23 males and 1 female, with a mean age of (53.63±4.33) years. The New York Heart Association (NYHA) functional class was Ⅱ to Ⅲ. The mean number of distal anastomoses was 3.17±0.38. A Y-graft was constructed in 12 patients and sequential grafting was performed in 4 patients. Concomitant procedures included coronary endarterectomy in 1 patient, intra-aortic balloon pump (IABP) implantation in 10 patients, and thymoma resection in 1 patient. The mean operative time was (308.13±30.39) min, mechanical ventilation time was (15.42±7.42) h, ICU stay was (46.08±27.32) h, and postoperative hospital stay was (11.71±1.90) d. There were no in-hospital deaths. Postoperative complications included one patient of acute renal failure and one patient of cerebral infarction. Pre-discharge color Doppler echocardiography revealed that the left ventricular end-diastolic diameter was significantly smaller than before surgery (P<0.05), while the left ventricular ejection fraction and fractional shortening were significantly higher (P<0.05). Coronary computed tomography angiography (CTA) showed that all arterial grafts were patent. During a mean follow-up of (14.58±8.75) months, no patients experienced angina recurrence or mortality. Repeat coronary CTA or angiography in 16 patients one year postoperatively confirmed that all arterial grafts remained patent. Conclusion Total arterial OPCABG using a LITA and bilateral RAs is a safe and effective treatment for patients with severe multi-vessel coronary artery disease. For high-risk patients, intraoperative IABP support is recommended.
8.Management status and influencing factors of disease stabilization in patients with severe mental disorders in Luzhou City, Sichuan Province
Xuemei ZHANG ; Bo LI ; Benjing CAI ; Youguo TAN ; Bo XIANG ; Jing HE ; Qidong JIANG ; Jian TANG
Sichuan Mental Health 2025;38(2):131-137
BackgroundSevere mental disorders represent a major public health concern due to the high disability rates and substantial disease burden, which has garnered significant national attention and prompted their inclusion in public health project management systems. However, credible evidence regarding the current status of disease management and factors influencing disease stabilization among patients with severe mental disorders in Luzhou City, Sichuan Province, remains limited. ObjectiveTo investigate the current management status of patients with severe mental disorders in Luzhou City, Sichuan Province, and to analyze influencing factors of disease stabilization among patients under standardized care, so as to provide evidence-based insights for developing targeted management strategies to optimize clinical interventions for this patient population. MethodsIn March 2023, data were extracted from the Sichuan Mental Health Service Comprehensive Management Platform for patients with severe mental disorders in Luzhou City who received management between December 2017 and December 2022. Information on mental health service utilization and clinical status changes was collected. Trend analysis was conducted to evaluate temporal changes in key management indicators for severe mental disorders in Luzhou City. Logistic regression analysis was employed to identify factors influencing the disease stabilization or fluctuation of these patients. ResultsThis study enrolled a total of 20 232 patients. In Luzhou City, the stabilization rate and standardized management rate of severe mental disorders were 94.89% and 79.36% in 2017, respectively, which increased to 95.33% and 96.92% by 2022. The regular medication adherence rate rose from 34.42% in 2018 to 86.81% in 2022. In 2022, the regular medication adherence rate was 71.80% for schizophrenia, 55.26% for paranoid psychosis, and 51.43% for schizoaffective disorder. Multivariate analysis identified the following protective factors for disease stabilization: age of 18~39 years (OR=0.613, 95% CI: 0.409~0.918), age of 40~65 years (OR=0.615, 95% CI: 0.407~0.931), urban residence (OR=0.587, 95% CI: 0.478~0.720), and regular medication adherence (OR=0.826, 95% CI: 0.702~0.973). Risk factors for disease fluctuation included poor (OR=1.712, 95% CI: 1.436~2.040), non-inclusion in care-support programs (OR=1.928, 95% CI: 1.694~2.193), non-participation in community rehabilitation (OR=2.255, 95% CI: 1.930~2.634), and intermittent medication adherence (OR=3.893, 95% CI: 2.548~5.946). ConclusionThe stability rate, standardized management rate, and regular medication adherence rate of patients with severe mental disorders in Luzhou City have shown a year-by-year increase. Age, household registration status, economic condition, medication compliance, and community-based rehabilitation were identified as influencing factors for disease fluctuation in these patients. [Funded by Luzhou Science and Technology Plan Project (number, 2022-ZRK-186)]
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.

Result Analysis
Print
Save
E-mail