1.Pathogenic Mechanisms of Spleen Deficiency-Phlegm Dampness in Obesity and Traditional Chinese Medicine Prevention and Treatment Strategies:from the Perspective of Immune Inflammation
Yumei LI ; Peng XU ; Xiaowan WANG ; Shudong CHEN ; Le YANG ; Lihua HUANG ; Chuang LI ; Qinchi HE ; Xiangxi ZENG ; Juanjuan WANG ; Wei MAO ; Ruimin TIAN
Journal of Traditional Chinese Medicine 2026;67(1):31-37
Based on spleen deficiency-phlegm dampness as the core pathogenesis of obesity, and integrating recent advances in modern medicine regarding the key role of immune inflammation in obesity, this paper proposes a multidimensional pathogenic network of "obesity-spleen deficiency-phlegm dampness-immune imbalance". Various traditional Chinese medicine (TCM) herbs that strengthen the spleen, regulate qi, and resolve phlegm and dampness can treat obesity by improving spleen-stomach transport and transformation, promoting water-damp metabolism, and regulating immune homeostasis. This highlights immune inflammation as an important entry point to elucidate the TCM concepts of "spleen deficiency-phlegm dampness" and the therapeutic principle of "strengthening the spleen and eliminating dampness to treat obesity". By systematically analyzing the intrinsic connection between "spleen deficiency generating dampness, internal accumulation of phlegm dampness" and immune dysregulation in obesity, this paper aims to provide theoretical support for TCM treatment of obesity based on dampness.
2.Epidemiological characteristics analysis of tuberculosis among college students in Yangzhou during 2020-2024
Chinese Journal of School Health 2026;47(1):109-112
Objective:
To analyze the epidemiological characteristics of pulmonary tuberculosis (PTB) among college students in Yangzhou from 2020 to 2024, so as to provide a scientific basis for developing prevention and control strategies.
Methods:
An epidemiological investigation was conducted among 162 college students with PTB, and 7 134 of their contacts were screened. Data were obtained from the tuberculosis information management system and on campus screening records. Using descriptive epidemiological methods, trends in incidence, seasonal distribution, and bacteriological characteristics were analyzed.
Results:
From 2020 to 2024, the annual average incidence of pulmonary tuberculosis among college students in Yangzhou was 29.42 per 100 000, showing an overall fluctuating downward trend ( χ 2=12.36, P <0.01). Cases were mainly concentrated in summer and autumn, with the highest proportion in autumn (41.36%, 67/162), followed by summer (23.46%, 38/162). The proportion of etiologically positive cases increased from 37.21% in 2020 to 71.43% in 2024; among positive cases, the proportion of latent tuberculosis infection (LTBI) decreased from 66.67% (10/15) to 26.67% (4/15). The etiological positive rate was higher in females than in males ( χ 2= 11.76 , P <0.01). Comparison of screening methods showed that among index cases, the LTBI detection rate of the recombinant Mycobacterium tuberculosis fusion protein skin test (C-TST) was higher than that of the tuberculin skin test (TST), but the difference was not statistically significant ( χ 2=0.65, P =0.42); among close contacts, the detection rate of TST was higher than that of C-TST (15.1%,10.1%; χ 2=5.23, P <0.05).
Conclusion
From 2020 to 2024, the annual average incidence of pulmonary tuberculosis among college students in Yangzhou showed an overall fluctuating downward trend, with differences in TB infection screening methods and gender.
3.Quality evaluation of methodological and reporting quality of clinical practice guidelines and expert consensuses on blood transfusion and blood utilization in china
Yumei YANG ; Yuting WU ; Yu TIAN ; Weifeng DING ; Jiaying WANG ; Lei YANG ; Aiyuan DU ; Xiaofeng PAN ; Xiaoshan LI ; Rong GAO ; Tingting WANG
Chinese Journal of Blood Transfusion 2026;39(7):952-962
Objective: To evaluate the methodological quality and reporting quality of clinical practice guidelines or expert consensus on blood transfusion and blood use (BTBU) in China (hereinafter referred to as "guidelines/consensus"), providing reference for the development and updating of future BTBU guidelines/consensus. Methods: A systematic search was conducted in Chinese databases such as China National Knowledge Infrastructure (CNKI), Wanfang Data, VIP Data-base, relevant guideline release platforms, and professional association websites. BTBU-related guidelines/consensus published between January 2006 and December 2025 were included. According to the inclusion and exclusion criteria, after completing literature screening and data extraction, three evaluators independently assessed the quality of the included literature using the Scientificity, Transparency, and Applicability of Guidelines Rating Tool (STAR), the Appraisal of Guidelines for Research and Evaluation Ⅱ (AGREE Ⅱ), and the International Practice Guideline Reporting Standards (RIGHT). Results: A total of 29 documents were included, including 5 guidelines, 22 consensus statements, and 2 protocols. The results of the STAR assessment showed that the total score was (21.7±8.8)%. The domain score ratios for registration, research protocol, funding, working group, conflict of interest, clinical question, evidence, consensus method, recommendation, accessibility and other domains were (2.2±12.1)%, 0, (36.7±25.1)%, (18.3±7.6)%, (19.2±15.3)%, (16.6±23.1)%, (15.1±6.3)%, (9.6±21.2)%, (54.3±18.4)%, (31.7±10.4)% and (10.3±31.0)%, respectively. For the AGREE Ⅱ assessment, the methodological quality of 26 articles was rated Grade B and 3 articles Grade C. The results of the RIGHT assessment indicated that the overall reporting rate of all guidelines/consensuses was (65.3±4.0)%. Conclusion: The methodological and reporting quality of current expert guidelines/consensus on BTBU in China still need improvement, and guidelines and consensus should be strictly formulated and standardized according to the standards of STAR, AGREE II and RIGHT.
4.Repetitive trans-spinal magnetic stimulation promotes motor function recovery in mice after spinal cord injury
Haiwang SONG ; Guanhua JIANG ; Yingying MU ; Shanyu FU ; Baofei SUN ; Yumei LI ; Zijiang YU ; Dan YANG
Chinese Journal of Tissue Engineering Research 2025;29(11):2252-2260
BACKGROUND:Repetitive trans-spinal magnetic stimulation(rTSMS)can inhibit inflammatory responses following spinal cord injury.rTSMS applies magnetic field stimulation to the spinal cord region to modulate neuronal excitability and synaptic transmission,thereby promoting plasticity and repair of the nervous system. OBJECTIVE:To observe the effects of rTSMS on the Toll-like receptor 4(TLR4)/nuclear factor(NF)-κB/NLRP3 signaling pathway after spinal cord injury and explore its mechanism in promoting motor function recovery. METHODS:Male C57BL/6J mice,SPF grade,were randomly divided into sham surgery group,spinal cord injury group,and rTSMS group.The latter two groups of mice were anesthetized and the T9 vertebral plate was removed using rongeur forceps to expose the spinal cord,and the spinal cord was clamped using a small aneurysm clip for 20 seconds to establish the spinal cord injury model.Mice in the rTSMS group underwent a 21-day rTSMS intervention starting on day 1 after spinal cord injury.The stimulation lasted 10 minutes per day,5 days per week with an interval of 2 days.Basso Mouse Scale scores were used to assess motor function recovery in mice after spinal cord injury at 1,3,7,14,and 21 days after spinal cord injury.Western blot was employed to detect the expression of AQP4,apoptotic factors Bax,Bcl-2,CL-Caspase-3,inflammatory factors tumor necrosis factor-α,interferon-γ,interleukin-6,interleukin-4,and the TLR4/NF-κB/NLRP3 signaling pathway related proteins in the injured spinal cord.Oxidative stress assay kit was used to measure the activity of superoxide dismutase,glutathione peroxidase,and malondialdehyde content at the site of spinal cord injury.Immunofluorescence staining was performed to detect the expression of neuronal nuclei(NeuN). RESULTS AND CONCLUSION:The Basso Mouse Scale score in the rTSMS group was significantly higher than that in the spinal cord injury group(P<0.05).Compared with the spinal cord injury group,the rTSMS group showed a reduction in spinal cord water content.The expression of AQP4 protein,malondialdehyde content,and expression of Bax,Bcl-2,CL-Caspase-3,tumor necrosis factor-α,interferon-γ,interleukin-6,and TLR4/NF-κB/NLRP3 signaling pathway related proteins were all decreased in the rTSMS group,while the activities of superoxide dismutase and glutathione peroxidase,as well as the expression of Bcl-2,interleukin-4,and NeuN,were all increased(P<0.05).These results suggest that rTSMS downregulates the expression of proteins related to the TLR4/NF-κB/NLRP3 signaling pathway,alleviating symptoms after spinal cord injury such as spinal cord edema,oxidative stress,apoptosis,and inflammation,exerting neuroprotective effects,and thereby promoting the recovery of hindlimb motor function after spinal cord injury.
5.Hei Xiaoyaosan Modulates Oxidative Stress and Apoptosis to Exert Neuroprotective Effect in Alzheimer's Disease Rats
Yiqin CHEN ; Jiao YANG ; Wenli PEI ; Yumei HAN ; Huping WANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(9):99-107
ObjectiveTo explore the role and mechanism of Hei Xiaoyaosan in regulating the protein kinase B (Akt)/glycogen synthase kinase-3β (GSK-3β)/nuclear factor E2-related factor 2 (Nrf2)/heme oxygenase-1 (HO-1) signaling pathway in cascade modulation of oxidative stress and apoptosis for preventing and treating Alzheimer's disease (AD). MethodsNinety male SD rats of 4 months old were randomly assigned into a control group (n=10), a sham group (with injection of 1 μL normal saline into bilateral hippocampi, n=10), and a modeling group (with injection of 1 μL beta-amyloid 1-42 solution into bilateral hippocampi to induce AD, n=70). One week after modeling, 50 successfully modeled rats were selected and randomly allocated into model, donepezil hydrochloride (0.45 mg·kg-1), and high-, medium-, and low-dose (15.30, 7.65, 3.82 g·kg-1, respectively) Hei Xiaoyaosan groups. The rats were administrated with corresponding drugs once daily for six consecutive weeks. The Morris water maze was used to assess the learning and memory abilities of rats. Hematoxylin-eosin (HE) staining was performed to reveal hippocampal morphological changes in AD rats. Apoptosis in the hippocampal CA3 region was detected by terminal-deoxynucleotidyl transferase-mediated Nick end labeling. Immunofluorescence was used to visualize the expression of neuronal nuclear antigen (NeuN) in the CA1 region. Additionally, enzyme-linked immunosorbent assay was performed to assess the activities of glutathione peroxidase (GSH-Px), glutathione-S-transferase (GST), and catalase (CAT) in the hippocampus. Real-time PCR was conducted to measure the mRNA levels of Akt, GSK-3β, Nrf2, and HO-1, while Western blot was employed to determine the protein levels of phosphorylated Akt (p-Akt)/Akt, phosphorylated GSK-3β (p-GSK-3β)/GSK-3β, Nrf2, and HO-1. ResultsCompared with the control group, the model group on day 5 showed an increase in total swimming distance (P<0.01), a reduction in the percentage of time spent in the target quadrant (P<0.01), reduced and disarranged neurons, nuclear condensation, varying degrees of cellular damage, increased apoptosis of hippocampal neurons (P<0.01), decreased NeuN content (P<0.01), weakend activities of GSH-Px, GST, and CAT (P<0.01), and down-regulated mRNA levels of Nrf2 and HO-1 (P<0.01) and protein levels of p-Akt/Akt, p-GSK-3β/GSK-3β, Nrf2, and HO-1 (P<0.01) in the hippocampus. Compared with the model group, donepezil hydrochloride and high, medium, and low doses of Hei Xiaoyaosan shortened the total swimming distance on day 5 (P<0.05, P<0.01), increased the percentage of time spent in the target quadrant (P<0.05, P<0.01), improved the arrangement and morphology of neurons, reduced nuclear condensation and the apoptosis rate of hippocampal neurons (P<0.01), increased the NeuN content (P<0.01), enhanced the activities of GSH-Px, GST, and CAT (P<0.05, P<0.01), and up-regulated the mRNA levels of Nrf2 and HO-1 (P<0.05, P<0.01) and the protein levels of p-Akt/Akt, p-GSK-3β/GSK-3β, Nrf2, and HO-1 (P<0.05, P<0.01) in the hippocampus. ConclusionHei Xiaoyaosan can regulate the Akt/GSK-3β/Nrf2/HO-1 pathway to enhance the antioxidant stress capacity and inhibit neuron apoptosis to exert the neuroprotective effect, thereby ameliorating the cognitive dysfunction and pathological damage in AD rats.
6.Hei Xiaoyaosan Improves Learning and Memory Abilities in Alzheimer's Disease Rats by Regulating Cell Apoptosis
Huping WANG ; Jiao YANG ; Yiqin CHEN ; Zhipeng MENG ; Yujie LYU ; Yunyun HU ; Wenli PEI ; Yumei HAN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(9):108-115
ObjectiveTo explore the mechanism of Hei Xiaoyaosan in improving the cognitive function in Alzheimer's disease (AD) from cell apoptosis mediated by the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt)/nuclear factor kappa B (NF-κB) signaling pathway. MethodsFour-month-old SD male rats were randomly assigned into a blank group, a sham group, a model group, a donepezil hydrochloride (0.45 mg·kg-1) group, and high-, medium-, and low-dose (15.30, 7.65, and 3.82 g·kg-1, respectively) Hei Xiaoyaosan groups, with 10 rats in each group. The sham group received bilateral hippocampal injection of 1 μL normal saline, while the other groups received bilateral hippocampal injection of 1 μL beta-amyloid 1-42 (Aβ1-42) solution for the modeling of AD. Rats were administrated with corresponding agents once a day for 42 consecutive days. The Morris water maze test was carried out to assess the learning and memory abilities of rats. Hematoxylin-eosin staining was employed to observe pathological changes in the hippocampus of rats. Enzyme-linked immunosorbent assay was employed to measure the levels of cysteinyl aspartate-specific proteinase-3 (Caspase-3), B-cell lymphoma-2 (Bcl-2), and Bcl-2-associated X protein (Bax). Western blot was employed to determine the protein levels of PI3K, Akt, and NF-κB. A cell model of AD was established by co-culturing Aβ1-42 and PC12 cells in vitro. Cell viability and apoptosis were detected by the cell-counting kit 8 (CCK-8) assay and flow cytometry (FC), respectively. ResultsAnimal experiments showed that compared with the blank group, the model group had a prolonged escape latency (P<0.01), a reduced number of crossing platforms (P<0.01), disarrangement and a reduced number of hippocampal neurons, up-regulated expression of Bax and Caspase-3, down-regulated expression of Bcl-2 (P<0.01), decreased p-PI3K/PI3K and p-Akt/Akt levels, and an increased p-NF-κB/NF-κB level (P<0.01). Compared with the model group, donepezil hydrochloride and high- and medium-dose Hei Xiaoyaosan shortened the escape latency and increased the number of crossing platforms (P<0.05, P<0.01), improved the arrangement and increased the number of hippocampal neurons, down-regulated the expression levels of Bax and Caspase-3, up-reguated the expression level of Bcl-2 (P<0.05, P<0.01), increased the p-PI3K/PI3K and p-Akt/Akt levels (P<0.05, P<0.01), and reduced the p-NF-κB/NF-κB level (P<0.05, P<0.01). Cell experiments showed that compared with the blank group, the model group exhibited an increased apoptosis rate (P<0.01). Compared with the model group, the serum containing Hei Xiaoyaosan at various doses improved the cell viability (P<0.01), and the serum containing Hei Xiaoyaosan at the high dose decreased the cell apoptosis (P<0.01). ConclusionHei Xiaoyaosan may improve the learning and memory abilities of AD model rats by regulating cell apoptosis, while increasing the vitality and reducing the apoptosis rate of AD model cells via the PI3K/Akt/NF-κB signaling pathway.
7.Hei Xiaoyaosan Inhibits Ferroptosis by Regulating SIRT1/p53/SLC7A11 Signaling Pathway to Ameliorate Cognitive Dysfunction in Rat Model of Alzheimer's Disease
Jiao YANG ; Yiqin CHEN ; Wenli PEI ; Yumei HAN ; Huping WANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(9):116-123
ObjectiveTo investigate the effects of Hei Xiaoyaosan on cognitive impairment and the histone deacetylase sirtuin-1 (SIRT1)/tumor suppressor p53/solute carrier family 7 member 11 (SLC7A11) signaling pathway in the rat model of Alzheimer's disease (AD). MethodsA total of 90 16-week-old SPF-grade SD male rats were randomly assigned in a blank group (n=10), a sham group (n=10, with injection of 1 μL normal saline into the bilateral hippocampi), and an AD modeling group (n=70, with injection of 1 μL β amyloid 1-42 solution into the bilateral hippocampi). According to the random number table method, fifty successfully modeled rats were assigned into model, donepezil hydrochloride (0.45 mg·kg-1), and high-, medium-, and low-dose (15.30, 7.65, and 3.82 g·kg-1, respectively) Hei Xiaoyaosan groups, and they were administrated with corresponding agents via gavage once a day for 42 consecutive days. Morris water maze test was carried out to examine the cognitive function of rats. Nissl staining was employed to observe the morphology of hippocampal neurons in each group, and Prussian blue staining was used to detect iron deposition in the hippocampal tissue. Biochemical kits were used to measure the levels of superoxide dismutase (SOD), malondialdehyde (MDA), and iron ion (Fe2+) in the hippocampal tissue. Western blot and real-time quantitative polymerase chain reaction (Real-time PCR) were employed to determine the protein and mRNA levels, respectively, of SIRT1, p53, SLC7A11, glutathione peroxidase 4 (GPX4), and acyl-CoA synthetase long-chain family member 4 (ACSL4) in the hippocampus. ResultsCompared with the blank group, the model group showed reductions in target quadrant movement distance (P<0.01) and target quadrant residence time (P<0.05), disarrangement of hippocampal neurons, increased ferroptosis deposition in the hippocampus, a lowered level of SOD, risen levels of MDA and Fe2+ (P<0.05, P<0.01), down-regulated protein and mRNA levels of SIRT1, SLC7A11, and GPX4 (P<0.05, P<0.01), up-regulated protein and mRNA levels of p53 and ACSL4 (P<0.01), and aggravated pathological process of AD. Compared with the model group, donepezil hydrochloride extended the target quadrant residence time and the target quadrant movement distance (P<0.05, P<0.01). High- and medium- doses of Hei Xiaoyaosan extended the target quadrant residence time and the target quadrant movement distance (P<0.05, P<0.01), improved the neuron arrangement and reduced the ferroptosis deposition in the hippocampus, elevated the SOD level, lowered the MDA and Fe2+ levels (P<0.05, P<0.01), up-regulated the protein and mRNA levels of SIRT1, SLC7A11, and GPX4 (P<0.01, P<0.05), and down-regulated the protein and mRNA levels of p53 and ACSL4 (P<0.05, P<0.01). ConclusionHei Xiaoyaosan can regulate the SIRT1/p53/SLC7A11 signaling pathway to mitigate oxidative stress and inhibit ferroptosis, thereby ameliorating the cognitive dysfunction in AD rats.
8.Analysis of Chemical Components of Yin-Qiao-Qing-Re Tablets by UPLC-Q-TOF-MS/MS and GC-MS
Zerong CAI ; Yumei HU ; Wenjun LIU ; Shulin WANG ; Xinyu KONG ; Yifan YANG ; Mengyu QIAN ; Li-ang CAO ; Zhenzhong WANG
Journal of Nanjing University of Traditional Chinese Medicine 2025;41(9):1198-1212
OBJECTIVE The non-volatile and volatile chemical components in Yin-Qiao-Qing-Re Tablets were analyzed sepa-rately using ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry(UPLC-Q-TOF-MS/MS)and Gas Chromatography Mass Spectrometry(GC-MS).METHODS The non-volatile components were analyzed using a Waters ACQUITY UPLC BEH C18 column(2.1 mm×100 mm,1.7 μm),with a mobile phase consisting of 0.1%formic acid aqueous solution(A)and acetonitrile(B)for gradient elution,a flow rate of 0.35 mL·min-1,an injection volume of 5 μL,and a column temperature of 30 ℃;the volatile components were analyzed using an Agilent SH-I-5MS column(5%Phenyl Methyl Silox,30 m×250 μm,0.25 μm);the procedure was temperature-programmed,with an injection volume of 1 μL,a split ratio of 10∶1,a flow rate of 1.0 mL·min-1,and an inlet temperature of 200 ℃.RESULTS A total of 134 non-volatile chemical components and 23 volatile components were analyzed and identified from Yin-Qiao-Qing-Re Tablets,among which 49 compounds were confirmed through comparison with reference stand-ards.The non-volatile components mainly include 27 flavonoids,21 organic acids,15 lignans,14 iridoids,12 phenylethanoid glyco-sides,11 saponins,10 alkaloids,5 terpenes,4 amino acids,3 phenylpropanoids,3 nucleosides,3 xanthones,3 phenolic glycosides,2 chromones and 1 carbohydrate.The volatile components mainly include 11 monoterpenes,5 alcohols and phenols,3 alkenes,2 ke-tones,1 ester,and 1 hydrocarbon.CONCLUSION This study rapidly identifies the chemical components of Yin-Qiao-Qing-Re Tablets,laying a preliminary foundation for research on the pharmacodynamic substances of Yin-Qiao-Qing-Re Tablets and the im-provement of quality control standards.
9.Analysis of potential profile categories and influencing factors of cancer related worries in postoperative patients with early lung cancer
Yingzi YANG ; Xuefeng TANG ; Chen SHEN ; Xiaoting PAN ; Xinxin CHEN ; Yumei LI
Chinese Journal of Practical Nursing 2025;41(4):297-304
Objective:To explore the potential profile characteristics of cancer-related worries in patients after surgery for early-stage lung cancer, and the influencing factors of different categories, provide reference for patients to formulate individualized rehabilitation programs and psychological intervention measures.Methods:A cross-sectional survey method was used to conveniently select patients who received outpatient follow-up after lung cancer surgery at Shanghai Pulmonary Hospital Affiliated to Tongji University from October 2022 to October 2023 as the survey subjects. The general information questionnaire, the Chinese version of Brief Cancer-related Worry Inventory, the Chinese version of the MD Anderson Symptom Inventory, Brief Illness Perception Questionnaire, 10-item Connor Davidson Resilience Scale and Medical Coping Modes Questionnaire were examined. Latent profile analysis was performed on the cancer-related worry scores of lung cancer surgery patients, and its influencing factors were explored by binary Logistic regression analysis.Results:A total of 302 patients after lung cancer surgery were included, including 111 males and 191 females, aged 18-83(52.73 ± 13.07) years, and the Chinese version of the Brief Cancer-related Worry Inventory scored 380.00 (130.00, 720.00) points. The cancer-related worry of patients after lung cancer surgery could be divided into two potential profile categories: "high worry type" (138 patients accounted for 45.70%) and "low worry type" (164 patients accounted for 54.30%). Symptom burden ( OR=1.055, 95% CI 1.039-1.072), illness perception ( OR=1.190, 95% CI 1.127-1.256), resilience ( OR=0.933, 95% CI 0.886-0.983), and coping modes of confrontation ( OR=0.857, 95% CI 0.757-0.971) and acceptance-resignation ( OR=1.247, 95% CI 1.050-1.481) were influencing factors for grouping cancer related worry profiles (all P<0.05). Conclusions:There was significant heterogeneity in the level of cancer-related worries among patients after surgery for early-stage lung cancer. It is recommended that medical staff provide targeted continuity care measures based on the characteristics of worries of different categories of patients to improve patients' postoperative mental health and quality of life.
10.4-week high-intensity interval training regulates the mitochondrial unfolded protein response in skeletal muscle to improve depressive-like behavior in chronic unpredictable mild stress model rats
Jiaren LIANG ; Yumei HAN ; Chunhui BAO ; Ziwei ZHANG ; Junsheng TIAN ; Yonghong YANG ; Huan XIANG
Chinese Journal of Comparative Medicine 2025;35(3):1-14
Objective To investigate the mechanism by which 4-week high-intensity interval training(HIIT)regulates the mitochondrial unfolded protein response(UPRmt)in skeletal muscle and improves mitochondrial function in a rat model of chronic unpredictable mild stress(CUMS).Methods Male SPF-grade SD rats(6~8 weeks old)were divided randomly into control(C),model(M),HIIT+control(HC),and HIIT+model(HM)groups.Rats in the M and HM groups were subjected to CUMS for 8 weeks to establish a depression model,while rats in the HC and HM groups received HIIT for 5 d a week for 4 weeks.The exercise regimen consisted of 3 min high-speed(85%~90%Smax)combined with 1 min low-speed(50%~55%Smax)uninterrupted repetitive training(Smax is maximum training speed).Behavioral changes were evaluated at weeks 4 and 8.Tissue samples were taken 24 h after the last behavioral test and skeletal muscle mitochondria were examined by transmission electron microscopy.The ATP and reactive oxygen species(ROS)contents were measured by enzyme-linked immunosorbent assays and protein expression levels of activating transcription factor(ATF)4,ATF5,C/EBP homologous protein(CHOP),and heat shock protein 60(HSP60)were detected by Western blot.Results(1)The body mass,number of crossing grids,number of upright positions,sugar-water preference rate,and ATP content were significantly decreased in group M compared with group C(P<0.01),while the number of damaged mitochondria,ROS content,ATF4,ATF5,CHOP,and HSP60 protein expression were significantly increased(P<0.01).(2)After 4-weeks of HIIT intervention,the ATP content and ATF4 and ATF5 protein expression levels were significantly increased in the HC group compared with C group(P<0.05,P<0.01).The number of crossing grids,number of upright positions,sugar-water preference rate,ATP content,and ATF4 protein expression were significantly increased in the HM group compared with M group(P<0.01),while the number of damaged mitochondria,ROS content,and ATF5,CHOP,and HSP60 protein expression levels were significantly decreased(P<0.01).(3)After 4 weeks of HIIT intervention,the number of crossing grids in CUMS rats was significantly positively correlated with ATF4 protein expression,and ROS content was correlated with CHOP protein expression,number of damaged mitochondria,and ATF5 protein expression(|r|>0.75,P<0.01;|r|>0.75,P<0.05).Upright frequency was significantly negatively correlated with ATF5 and HSP60 protein expression,the number of crossing grids,the sugar-water preference rate,and the expression of CHOP and HSP60 proteins(|r|<0.75,P<0.05).Conclusions 4-week HIIT intervention can improve mitochondrial dysfunction and alleviate depressive-like behavior in CUMS rats by regulating skeletal muscle UPRmt.


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