1.Effects of Changpu Yujin Decoction on mitophagy and PINK1/Parkin signaling pathway in a rat model of Tourette syndrome
Shuang HUANG ; Ya-li YAN ; Hao MEI ; Jing-xi YAO ; Fu-chun XUE ; Jing SHANG ; Yan TANG ; Zheng-gang SHI
Chinese Traditional Patent Medicine 2025;47(10):3225-3232
AIM To investigate the effects of Changpu Yujin Decoction(CPYJD)on striatal mitophagy and PINK1/Parkin signaling pathway in a rat model of Tourette syndrome(TS).METHODS Thirty-six SPF male SD rats were randomly assigned to the control group(n=9)and the TS modeling group(n=27).Rats in the modeling group received daily intraperitoneal injections of 3,3'-iminodipropionitrile(IDPN)(300 mg/kg)for 7 consecutive days to establish the TS model.Post-modeling,successfully induced TS rats were re-randomized into model group(no treatment),tiapride group(47.91 mg/kg)and CPYJD group(77.28 g/kg).All groups received their respective interventions via intragastric administration daily for 28 days.Following drug administration,behavioral scores were assessed in each group.Pathological alterations in the striatum were examined using HE staining,while ultrastructural changes were evaluated by transmission electron microscopy(TEM).Neuronal apoptosis was quantified via TUNEL staining,and ROS levels in striatum were measured by ELISA.Co-localization of PINK1 and LC3B was assessed using immunofluorescence(IF).Finally,mRNA and protein expressions of PINK1,Parkin,Beclin-1,P62 and LC3B(LC3B-Ⅱ/Ⅰ ratio)were analyzed by RT-qPCR and Western blot.RESULTS Compared to the control group,the model group demonstrated significantly increased behavioral scores(P<0.01),elevated neuronal apoptosis rate and higher ROS levels in the striatum(P<0.01);severe neuronal and mitochondrial damage in the striatum;significantly reduced mRNA and protein expressions of PINK1,Parkin,Beclin-1 and LC3B(LC3B-Ⅱ/Ⅰ ratio)in the striatum(P<0.01);markedly upregulated P62 mRNA and protein expressions(P<0.01).Compared to the model group,both the tiapride and CPYJD intervention groups exhibited significantly reduced behavioral scores(P<0.01);decreased neuronal apoptosis rate and lower ROS levels(P<0.01);improved pathological alterations in the striatal neurons and mitochondria;increased mRNA and protein expressions of PINK1,Parkin and Beclin-1 in the striatum(P<0.05,P<0.01);and decreased P62 mRNA and protein expressions(P<0.01).Furthermore,the rats in the CPYJD group specifically showed elevated LC3B mRNA level and LC3B-Ⅱ/Ⅰ protein ratio in striatum(P<0.05,P<0.01).CONCLUSION The effect of CPYJD intervention in TS rats may involve activation of mitophagy through regulation of the PINK1/Parkin signaling pathway,improving mitochondrial function,reducing ROS levels,and thereby protecting neurons.
2.Integrated multi-parameter monitoring for optimizing low-molecular-weight heparin treatment in intensive care unit patients: a clinical value assessment
Qin LI ; Liqin LING ; Xiaomei LI ; Chaonan LIU ; Xunbei HUANG ; Shuang WANG ; Zhiyu YU ; Jing ZHOU
Chinese Journal of Laboratory Medicine 2025;48(8):1008-1014
Objective:To explore the clinical value of multi-parameter combined monitoring in guiding low-molecular-weight heparin (LMWH) therapy for intensive care unit (ICU) patients.Methods:A retrospective case-control study was conducted. A total of 381 patients who received LMWH therapy with anti-Ⅹa activity monitoring in the ICU of West China Hospital, Sichuan University between January 31st, 2022, and November 30th, 2023, were enrolled in this study. The cohort comprised 264 males and 117 females, with the age of 58 (48, 71) years old. Clinical data and relevant laboratory parameters were collected, including anti-Ⅹa activity, antithrombin activity (AT), thrombin-antithrombin complex (TAT), plasmin-antiplasmin complex (PIC), conventional coagulation parameters such as activated partial thromboplastin time (APTT), and indicators of hepatic/renal impairment such as alanine aminotransferase (ALT) and creatinine( CREA). Patients were stratified into three groups based on thrombotic event: thrombosis-controlled, progressive thrombosis, and bleeding group. Single-factor and adjusted multifactorial Logistic regression analysis were used to identify independent predictors of anti-xa activity levels.Results:Among 381 patients, thrombosis was controlled in 213 (55.9%) patients, progressed in 81 (21.3%) patients , and bleeding events occurred in 87 (22.8%) patients. The patients whose anti-Ⅹa activity levels lay entirely within the target range(0.2-0.4 IU/ml): Only 35 (16.4%) cases in the thrombosis-controlled group, 16 (19.7%) cases in the progressive thrombosis group, and 16 (18.4%) in the bleeding group. No significant differences in anti-Ⅹ a levels activity among the three groups ( H=1.678, P=0.432). Both single-factor and adjusted multifactorial Logistic regression identified low AT activity as an independent risk factor for failure to achieve target anti-Ⅹ a activity levels (AT nadir, OR=1.031,95% CI 1.016-1.046, P<0.05). Compared with the progressive thrombosis and bleedinggroup, the thrombosis-controlled group exhibited significantly higher proportion of TAT values below the cut-off value ( H=8.519, P=0.014), and a higher proportion of TAT/PIC ratios below the cut-off ( H=15.56, P<0.001). Patients with bleeding demonstrated significantly lower AT activity ( H=14.968, P=0.001), prolonged APTT ( H=6.815, P=0.033), higher ALT ( H=13.774, P=0.001), and higher CREA ( H=14.068, P=0.001) compared with the thrombosis-controlled or progressive thrombosis group. Conclusion:Laboratory monitoring is required for low-molecular-weight heparin (LMWH) therapy in ICU patients. While anti-Ⅹa activity reflects the anticoagulant effect of LMWH, the utility of anti-Ⅹ a activity for predicting thrombotic or hemorrhagic risks in LMWH treated ICU patients is limited. Reductions in TAT levels and TAT/PIC ratios are associated with a lower risk of thrombotic progression. Furthermore, abnormalities in conventional coagulation tests and standard hepatic/renal function parameters occur more frequently in patients experiencing hemorrhagic events.
3.Clinical and genetic analysis of six children with RARS2-related pontocerebellar hypoplasia.
Xiaoli ZHANG ; Mengyue WANG ; Jialin LI ; Yichao MA ; Junling WANG ; Xiaoli LI ; Rui HAN ; Dan XU ; Shuang JIN ; Tianming JIA ; Shujin LI ; Xianjie HUANG ; Yueqin LI
Chinese Journal of Medical Genetics 2025;42(9):1096-1105
OBJECTIVE:
To analyze the clinical characteristics and genotypic changes of six children with RARS2 gene variants.
METHODS:
The clinical data of 6 children with RARS2 gene variants diagnosed at the Third Affiliated Hospital of Zhengzhou University from January 2017 to August 2024 were collected. Genetic variants were detected using trio-whole exome sequencing. Genomic DNA was extracted from samples and subjected to high-throughput sequencing. Variants were detected and analyzed using relevant databases and software. Pathogenic variants were validated by Sanger sequencing. The protein structure encoded by a previously unreported variant was predicted using a SWISS-MODEL online server. This study was approved by the Medical Ethics Committee of the Third Affiliated Hospital of Zhengzhou University (Ethics No.: 2024-373-01).
RESULTS:
Among the six children, four were males and two were females, with the most recent follow-up age ranging from 1-year-and-1-month to 7 years old. The age of onset was under 1 year in all cases. All six children exhibited seizures, including infantile spasms in three, spasms and tonic spasms in one, and focal seizures in two. One child became seizure-free for 4 ~ 5 years following Valproic acid combined with topiramate and adrenocorticotropic hormone (ACTH) pulse therapy, but subsequently experienced a relapse. Another child has remained seizure-free for nearly one year with oral sodium valproate, levetiracetam, and a "cocktail" therapy. Seizures were not controlled in the remaining four children. Pontocerebellar hypoplasia was observed on neuroimaging in two children. All six patients exhibited severe psychomotor retardation. A total of 10 RARS2 gene variants were identified, three of which were previously unreported.
CONCLUSION
The predominant clinical features of Pontocerebellar hypoplasia associated with RARS2 gene variants include infantile onset, severe psychomotor retardation or regression, drug-resistant epilepsy, and feeding difficulties. The characteristic neuroimaging finding is pontocerebellar hypoplasia. However, its appearance may vary widely with time. The majority of affected children have a poor prognosis.
Humans
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Male
;
Female
;
Child, Preschool
;
Infant
;
Child
;
Olivopontocerebellar Atrophies/genetics*
;
Arginine-tRNA Ligase/genetics*
;
Mutation
;
Cerebellar Diseases
4.Research progress on flexible sensors in oral health monitoring
HUANG Jingwen ; HAN Shuang ; ZHENG Yi ; MA Ning
Journal of Prevention and Treatment for Stomatological Diseases 2025;33(7):612-618
Oral health is closely related to facial aesthetics, mastication, pronunciation, and systemic diseases. Flexible sensors can improve current deficiencies in clinical diagnosis and treatment through oral health monitoring. This paper reviews the research on and application of flexible sensors in oral health monitoring in recent years, providing a reference for the further development of flexible sensors in the oral field. The structural basis of flexible sensors includes a flexible substrate, stretchable electrodes, and an active layer, and each part is designed through material selection to adapt to the oral environment. The sensing mechanisms of sensors involve electricity, optics, electrochemistry, and immunology, among which electro-chemical, biological, and optical sensors are particularly prominent in the oral field. The monitored signals include physical signals such as orthodontic force, bite force, respiratory humidity, and implant temperature; chemical signals such as saliva metabolites and oral gases; and biological signals such as periodontal disease and oral cancer markers. At present, flexible sensors still face many challenges in this special oral environment. Future research directions include improving the biocompatibility, moisture resistance, and flexible fitting ability of sensors in the oral cavity; using temperature-insensitive materials and protective films to improve stability; and introducing artificial receptors and sensor arrays to improve factors such as selectivity. In addition, multi-disciplinary cooperation is crucial for breaking through current bottlenecks and achieving more accurate disease diagnosis and health monitoring. In the field of stomatology, finding specific biomarkers related to corresponding oral diseases is the key to sensor health monitoring. Through these efforts, flexible sensors are expected to gain more extensive applications in the field of oral health monitoring.
5.Fu's subcutaneous needling based on anatomy train theory for nonspecific low back pain: a randomized controlled trial.
Shuang LIANG ; Kaiyu HUANG ; Xinxin FENG ; Yongyi XU ; Xu CHEN
Chinese Acupuncture & Moxibustion 2025;45(9):1248-1252
OBJECTIVE:
To observe the clinical effect of Fu's subcutaneous needling based on anatomy train theory for nonspecific low back pain (NLBP).
METHODS:
A total of 120 patients with NLBP were randomized into an anatomy train Fu's subcutaneous needling group (40 cases, 3 cases dropped out), a conventional acupuncture group (40 cases, 2 cases dropped out) and a conventional Fu's subcutaneous needling group (40 cases, 2 cases dropped out). Acupuncture was applied at ashi points and bilateral Shenshu (BL23) and Dachangshu (BL25) in the conventional acupuncture group, once every other day, 3 times a week. Fu's subcutaneous needling was applied at lumbodorsal myofascial trigger points (MTrPs) in the Fu's subcutaneous needling group, once every 3 days, twice a week. On the basis of the treatment in the Fu's subcutaneous needling group, Fu's subcutaneous needling was applied at MTrPs along the posterior superficial line and lateral line in the anatomy train Fu's subcutaneous needling group, once every 3 days, twice a week. All groups were treated for 2 weeks. Before and after treatment, the scores of numeric rating scale (NRS) and Oswestry disability index (ODI) were observed, the distance of Schober test was measured and the endurance of trunk extensors was assessed in the 3 groups.
RESULTS:
After treatment, in the 3 groups, the NRS and ODI scores were decreased compared with those before treatment (P<0.05), the Schober test distance was increased compared with that before treatment (P<0.05), the static and dynamic muscle endurance was increased compared with that before treatment (P<0.05). After treatment, in the anatomy train Fu's subcutaneous needling group, the NRS and ODI scores were lower than those in the conventional acupuncture group and the conventional Fu's subcutaneous needling group (P<0.05), the Schober test distance was longer than that in the conventional acupuncture group and the conventional Fu's subcutaneous needling group (P<0.05), the static and dynamic muscle endurance was superior to that in the conventional acupuncture group and the conventional Fu's subcutaneous needling group (P<0.05).
CONCLUSION
Fu's subcutaneous needling based on anatomy train theory can effectively relieve the pain symptom, enhance quality of life, improve lumbar motion and lumbar muscle function in patients with NLBP.
Humans
;
Low Back Pain/physiopathology*
;
Female
;
Male
;
Adult
;
Acupuncture Therapy/methods*
;
Middle Aged
;
Acupuncture Points
;
Young Adult
;
Treatment Outcome
;
Aged
6.Preemptive immunotherapy for KMT2A rearranged acute leukemias post-allogeneic stem cell transplantation.
Jing LIU ; Shuang FAN ; Xiaohui ZHANG ; Lanping XU ; Yu WANG ; Yifei CHENG ; Chenhua YAN ; Yuhong CHEN ; Yuanyuan ZHANG ; Meng LV ; Yazhen QIN ; Xiaosu ZHAO ; Xiaojun HUANG ; Xiaodong MO
Chinese Medical Journal 2025;138(22):3034-3036
7.Trends of Incidence and Mortality of Cancers from 2018 to 2022 in Changsha City,Hunan Province
Yuanxiu HUANG ; Jingsong HU ; Shuang HUANG ; Mansha LI ; Mengyi WU ; Fei LUO
China Cancer 2025;34(11):862-869
[Purpose]To analyze the trends of cancer incidence and mortality in Changsha City from 2018 to 2022.[Methods]Based on the annual cancer registry data of Changsha City from 2018 to 2022,SAS 9.2 software was used to calculate the crude incidence/mortality rates and age-standardized incidence/mortality rates by Chinese standard population(ASIRC/ASMRC).The age-standardized rate was standardized using the population composition of China in 2000.Join-point 4.9.0.0 software was used to fit a Log-linear regression model to calculate the average annual percentage change(AAPC)and its 95%confidence interval(CI)for trend analysis.A linear regression model was applied to calculate the contribution rate of each cancer type to the trend change,with a significance level of α=0.05.[Results]From 2018 to 2022,the crude incidence rate of malig-nant tumors in Changsha City was 367.98/105(ASIRC:232.28/105),and the crude mortality rate was 192.36/105(ASMRC:106.11/105).Both incidence and mortality rates were higher in male than those in female.The incidence and mortality rates remained relatively low before age 50 but rose rapidly thereafter:the incidence peaked in the age group of 80~84 years old,while mortality peaked in the age group of 85 years old and above.The top 5 cancers by incidence were lung cancer,female breast cancer,colorectum cancer,cervical cancer,and thyroid cancer;while the top 5 cancers by mortality were lung cancer,colorectum cancer,liver cancer,female breast can-cer,and cervical cancer.The ASIRC increased significantly in the total population(AAPC=4.71%,95%CI:3.20%~6.23%),male(AAPC=2.44%,95%CI:0.35%~4.58%),and female(AAPC=7.17%,95%CI:4.00%~10.43%).The ASMRC increased significantly in the total population(AAPC=2.94%,95%CI:0.73%~5.20%)and male(AAPC=3.37%,95%CI:1.63%~5.15%),but the trend in female was not statistically significant(P>0.05).Contribution rate analysis showed that thyroid cancer(51.25%),female breast cancer(12.18%),lymphoma(6.02%),and oral cavity and pharyngeal can-cer(5.28%)were the main cancer types contributing to the increased ASIRC;lung cancer(26.10%),colorectum cancer(14.89%),oral cavity and pharyngeal cancer(5.73%),lymphoma(5.60%),and thyroid cancer(2.08%)were the main ones contributing to the increased ASMRC;liver cancer(49.82%)and esophageal cancer(19.55%)were the main causes of decreased ASIRC,with their contribution rates to decreased ASMRC reaching 77.69%and 11.16%,respectively.[Conclusion]The disease burden of malignant tumors in Changsha City continued to increase from 2018 to 2022.It is necessary to strengthen prevention and control for cancers with a signifi-cant upward trend(such as thyroid cancer,lung cancer,and colorectum cancer)and high-risk populations(such as male and middle-aged and elderly people),while consolidating the prevention and control effects for liver cancer and esophageal cancer.
8.Risk factors and their predictive efficacy for early postoperative complications in elderly patients with hip fracture
Deen WAN ; Yongzhou YAN ; Feng SHUANG ; Hao LI ; Zhi ZENG ; Mudan HUANG ; Lu HAN ; Xiang PENG ; Di YANG ; Ming CHEN ; Qixin LIU
Chinese Journal of Trauma 2025;41(3):274-281
Objective:To investigate the risk factors and their predictive efficacy for early postoperative complications in elderly patients with hip fracture.Methods:A retrospective cohort study was conducted on the clinical data of 203 elderly patients with hip fracture admitted to the 908th Hospital of the Joint Logistics Support Force of the PLA and the First Affiliated Hospital of Nanchang University from January 2022 to December 2023, including 54 males and 149 females, aged 65-100 years [(80.5±7.7)years]. There were 96 patients with femoral neck fracture and 107 patients with intertrochanteric fracture. According to the AO/OTA classification, the fracture was classified as type 31A in 107 patients and type 31B in 96. Among them, 81 patients were treated with proximal femoral nail antirotation (PFNA), 65 with semi-hip arthroplasty, 52 with total hip arthroplasty (THA), and 5 with closed reduction and cannulated nail internal fixation. The patients were divided into complication group ( n=65) and non-complication group ( n=138) according to whether complications (mainly including delirium, lung infection, stress ulcer, and deep vein thrombosis of the lower limbs) occurred within 15 days after surgery. The gender, age, age stage, educational level, cause of injury, associated underlying diseases before surgery, AO/OTA classification, American Society of Anesthesiologists (ASA) classification, 5-factor modified frailty index (mFI-5) score, prognostic nutritional index (PNI), anesthesia method, operation method, operation time, intraoperative blood loss, length of hospital stay, etc., were recorded in the two groups. Univariate analysis and multivariate binary logistic regression analysis were used to evaluate the correlation between the above indexes and the occurrence of early postoperative complications in elderly patients with hip fracture and to determine their independent risk factors. The receiver operating characteristic (ROC) curve was plotted and the area under the curve (AUC) was calculated to evaluate the predictive efficacy of each risk factor for the occurrence of early postoperative complications in elderly patients with hip fracture. Results:Univariate analysis showed a certain correlation between age, age stage, associated underlying diseases before surgery, AO/OTA classification, ASA classification, mFI-5 score, PNI, operation method, and length of hospital stay and the occurrence of early postoperative complications in elderly patients with hip fracture ( P<0.05), while gender, educational level, cause of injury, anesthesia method, operation time, and intraoperative blood loss were not correlated with the occurrence of early postoperative complications in elderly patients with hip fracture ( P>0.05). The results of multivariate binary logistic regression analysis showed that the associated underlying diseases before surgery ( OR=5.46, 95% CI 1.33, 22.39, P<0.05), mFI-5 score ( OR=15.90, 95% CI 5.36, 47.15, P<0.01), and PNI ( OR=0.70, 95% CI 0.60, 0.81, P<0.01) were significantly correlated with the occurrence of early postoperative complications in elderly patients with hip fracture. The results of ROC curve analysis showed that mFI-5 score (AUC=0.85, 95% CI 0.80, 0.91) and PNI (AUC=0.87, 95% CI 0.82, 0.93) had moderate predictive efficacy, while the early warning efficacy of associated underlying diseases was low (AUC=0.54, 95% CI 0.45, 0.62). The combination of the above risk factors was more effective in predicting early postoperative complications in elderly patients with hip fracture (AUC=0.95, 95% CI 0.92, 0.98). Conclusions:The mFI-5 score, PNI, and associated underlying diseases before surgery are independent risk factors for early postoperative complications in elderly patients with hip fracture. The mFI-5 score and PNI have a higher predictive efficacy than associated diseases before surgery on the occurrence of early postoperative complications in elderly patients with hip fracture, while the combination of the above risk factors provides a significantly better predictive performance.
9.Renal response and prognosis of newly diagnosed patients with multiple myeloma with renal impairment applying VRD and autologous hematopoietic stem cell transplantation
Xingyue WU ; Yue HUANG ; Hongmiao SHEN ; Hongying YOU ; Zhi YAN ; Yan XIE ; Weiqin YAO ; Shuang YAN ; Jing WANG ; Yingying ZHAI ; Xiaolan SHI ; Jingjing SHANG ; Song JIN ; Lingzhi YAN ; Depei WU ; Chengcheng FU
Chinese Journal of Hematology 2025;46(9):839-847
Objective:To investigate the feasibility of the bortezomib, lenalidomide, and dexamethasone (VRD) regimen combined with autologous hematopoietic stem cell transplantation (auto-HSCT) in patients with multiple myeloma (MM) and renal impairment, analyze treatment efficacy and renal responses stratified based on renal dysfunction severity, and explore the prognostic significance of early renal response and its affecting factors.Methods:This retrospective study, conducted at the First Affiliated Hospital of Soochow University, categorized 316 patients with newly diagnosed MM (NDMM) from August 2018 to October 2022 based on renal function for analysis of clinical characteristics, treatment response, and prognosis. Continuous variables were compared using t-tests or Mann-Whitney U tests, categorical variables utilizing Chi-square tests, survival outcomes employing Kaplan-Meier and Log-rank tests, and renal response predictors with logistic regression.Results:Patients were stratified based on baseline estimated glomerular filtration rate (eGFR) : normal [≥90 ml·min -1· (1.73 m 2) -1, n=160], mild [≥60 ml·min -1· (1.73 m 2) -1 to <90 ml·min -1· (1.73 m 2) -1, n=55], moderate [≥30 ml·min -1· (1.73 m 2) -1 to <60 ml·min -1· (1.73 m 2) -1, n=39], and severe impairment [<30 ml·min -1· (1.73 m 2) -1, n=62]. Moderate and severe renal impairment correlated with advanced International Staging System/Revised International Staging System classification, lower hemoglobin levels, frailty, and higher light-chain/IgD subtype prevalence ( P<0.05). Despite younger age ( P=0.001) and higher transplant rates ( P=0.041) in severe cases, overall response rates ( ORR: 93.7% ; ≥VGPR: 82.9% ) were comparable across groups ( P>0.05). Among 24 dialysis-dependent patients at diagnosis, 11 (45.8% ) achieved dialysis independence after induction [median: 3.0 (0.5–4.0) months], including 10 undergoing auto-HSCT. In 89 evaluable patients [baseline eGFR <50 ml·min -1· (1.73 m 2) -1], renal ORR (RORR) was 70.8% [rapid complete response: 31.5% ; rapid partial response: 11.2% ; rapid minimal response (RMR) : 28.1% ]. Renal response predicted better survival (overall survival: HR=0.36, 95% CI: 0.13–0.99, P=0.049). Moderate-to-severe renal impairment was associated with increased transplant-related adverse events and delayed engraftment ( P<0.05) ; however, auto-HSCT significantly improved outcomes after 33.5-month median follow-up (range: 2–65 months). Multivariate analysis identified 1q21+ ( OR=3.58, 95% CI: 1.17–11.02, P=0.026) and light-chain subtype ( OR=2.86, 95% CI: 1.08–7.69, P=0.036) as independent predictors of poor renal response. Conclusion:VRD regimen plus auto-HSCT demonstrates robust efficacy in NDMM, including patients with renal impairment, with a 70.8% RORR and manageable toxicity. Achieving ≥RMR correlates with superior prognosis, whereas 1q21+ and light-chain subtype independently predict inferior renal response.
10.Dipsacus asper Treats Alzheimer's Disease in Caenorhabditis elegans by Regulating PPARα/TFEB Pathway
Mengmeng WANG ; Jianping ZHAO ; Limin WU ; Shuang CHU ; Yanli HUANG ; Zhenghao CUI ; Yiran SUN ; Pan WANG ; Hui WANG ; Zhenqiang ZHANG ; Zhishen XIE
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(5):104-114
ObjectiveTo investigate the anti-Alzheimer's disease (AD) effect of Dipsacus asper(DA) in the Caenorhabditis elegans model, and decipher the underlying mechanism via the peroxisome proliferator-activated receptor α (PPARα)/transcription factor EB (TFEB) pathway. MethodsFirst, transgenic AD C. elegans individuals were assigned into the blank control, model, positive control (WY14643, 20 µmol·L-1), and low-, medium-, and high-dose (100, 200, and 400 mg·L-1, respectively) DA groups. The amyloid β-42 (Aβ42) formation in the muscle cells, the paralysis time, and the deposition of amyloid β-protein (Aβ) in the head were detected. The lysosomal autophagy in the BV2 cell model was examined by Rluc-LC3wt/G120A. The expression levels of lysosomal autophagy-related proteins LC3Ⅱ, LC3I, LAMP2, and TFEB were detected by Western blot. Real-time quantitative polymerase chain reaction (Real-time PCR) was employed to determine the mRNA levels of autophagy-related genes beclin1 and Atg5 and lysosome-related genes LAMP2 and CLN2 downstream of PPARα/TFEB. A reporter gene assay was used to detect the transcriptional activities of PPARα and TFEB. Immunofluorescence was used to detect the fluorescence intensity of PPARα, and the active components of the ethanol extract of DA were identified by UPLC-MS. RCSB PDB, Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP), and Autodock were used to analyze the binding between the active components and PPARα-ligand-binding domain (LBD). ResultsCompared with the model group, the positive control group and 200 and 400 mg·L-1 DA groups showed prolonged paralysis time (P<0.05), and all the treatment groups showed decreased Aβ deposition in the head (P<0.01). DA within the concentration range of 50-500 mg·L-1 did not affect the viability of BV2 cells. In addition, DA enhanced the autophagy flux (P<0.05), up-regulated the mRNA levels of beclin1, Atg5, LAMP2, and CLN2 (P<0.05, P<0.01), promoted the nuclear translocation of TFEB (P<0.05), increased LAMP2 expression and autophagy flux (P<0.05, P<0.01), and enhanced the transcriptional activities of PPARα and TFEB (P<0.01). The positive control group and 200 and 400 mg·L-1 DA groups showed enhanced fluorescence intensity of PPARα in the BV2 nucleus (P<0.01). UPLC-MS detected nine known compounds of DA, from which 8 active components of DA were screened out. The docking results suggested that a variety of components in DA could bind to PPARα-LBD and form stable hydrogen bonds. ConclusionDA may reduce the pathological changes in AD by regulating the PPARα-TFEB pathway.


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