1.Mechanism of Danggui Shaoyaosan in Improving Glomerulosclerosis in db/db Mice via SIRT1/HIF-1α/VLDLr Signaling Pathway
Ruijia LI ; Zixuan WANG ; Shilong GUO ; Jing LI ; Qianqian ZHANG ; Wen DONG ; Dengzhou GUO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(6):11-18
ObjectiveTo investigate the potential mechanism of Danggui Shaoyaosan (DSS) in ameliorating renal injury in db/db mice. MethodsThirty 8-week-old specific pathogen-free (SPF)-grade male db/db mice and six db/m mice were acclimated for one week. Urinary microalbumin and blood glucose levels were measured weekly in both db/db and db/m mice. Successful modeling was determined by significantly higher microalbuminuria in db/db mice compared to db/m mice and a fasting blood glucose ≥16.7 mmol·L-1. The 30 db/db mice were randomly divided into five groups: the model group, the irbesartan (IBN) group, and three DSS dose groups (low-, medium-, and high-dose DSS groups, administered at 16.77, 33.54, 67.08 g·kg-1·d-1, respectively). Additionally, the six db/m mice served as the normal control group. The IBN group received irbesartan at 0.025 g·kg-1·d-1 by gavage, while the three DSS groups received DSS at 16.77, 33.54, and 67.08 g·kg-1·d-1 by gavage, respectively. The normal and model groups were administered with an equivalent volume of normal saline by gavage. All interventions lasted for 8 consecutive weeks. After intervention, serum creatinine (SCr), blood urea nitrogen (BUN), urinary total protein (UTP), triglyceride (TG), and low-density lipoprotein cholesterol (LDL-C) were measured to evaluate the therapeutic efficacy of the treatments. Renal histopathological changes were observed with hematoxylin-eosin (HE) staining. Western blot was used to detect the protein expression of silencing information regulator 1 (SIRT1), hypoxia-inducible factor-1α (HIF-1α), very low-density lipoprotein receptor (VLDLr), and cluster of differentiation 31 (CD31). Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) was used to detect the mRNA levels of HIF-1α and VLDLr. Immunohistochemistry was used to observe the expression and distribution of HIF-1α and Caspase-3. ResultsCompared to the normal group, the model group showed significantly increased SCr, BUN, UTP, TG, and LDL-C. HE staining revealed glomerulosclerosis, mesangial matrix hyperplasia, capillary loop distortion and thickening, with extensive inflammatory cell infiltration. Protein expression of SIRT1 and CD31 significantly decreased (P<0.05), while HIF-1α and VLDLr protein and mRNA levels increased (P<0.05). Immunohistochemistry showed increased expression of HIF-1α and Caspase-3 (P<0.05), indicating hypoxia and apoptosis in renal cells. In all treatment groups, SCr, BUN, TG, and LDL-C were significantly reduced compared to the model group (P<0.05), and UTP was significantly improved in the medium-dose DSS group (P<0.05). Renal tissue structure and morphology were improved, inflammatory cells were reduced, and no vascular hyaline degeneration was observed. SIRT1 and CD31 protein expression was elevated to varying degrees compared to the model group (P<0.05), while HIF-1α and VLDLr protein and mRNA levels decreased (P<0.05). Immunohistochemistry showed reduced expression of HIF-1α and Caspase-3 in all treatment groups (P<0.05), with the most significant improvement observed in the IBN group and medium-dose DSS group (P<0.05). ConclusionDSS can effectively ameliorate glomerulosclerosis and lipid deposition in db/db mice, and its mechanism may involve the SIRT1/HIF-1α/VLDLr signaling pathway.
2.Protective Effect and Potential Mechanism of Danggui Shaoyaosan on Diabetic Kidney Disease in db/db Mice Based on Endoplasmic Reticulum Stress in Glomerular Endothelial Cells
Ruijia LI ; Zixuan WANG ; Shilong GUO ; Sen YANG ; Jing LI ; Qianqian ZHANG ; Wen DONG ; Dengzhou GUO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(6):28-35
ObjectiveTo investigate the therapeutic efficacy of Danggui Shaoyaosan (DSS) on renal injury in db/db mice and its impact on endoplasmic reticulum stress (ERS) in renal tissues. MethodsThirty 8-week-old male db/db mice and six db/m mice were acclimated for one week, after which urinary microalbumin and blood glucose levels were monitored to establish a diabetic kidney disease (DKD) model. The model mice were randomly divided into a model group, an irbesartan group, and three DSS treatment groups with different doses (16.77, 33.54, and 67.08 g·kg-1·d-1). A normal group was set as control. Each group was intragastrically administered with the corresponding drugs or saline for 8 weeks. After the intervention, general conditions were observed. Serum cystatin C (Cys-C), 24-hour urinary total protein (24 h-UTP), 24-hour urinary microalbumin (24 h-UMA), urinary creatinine (Ucr), and urea nitrogen (UUN) were measured. Transmission electron microscopy (TEM) was used to observe glomerular basement membrane (GBM) and ultrastructural changes of the endoplasmic reticulum (ER) in glomerular endothelial cells. Western blot, real-time fluorescence quantitative polymerase chain reaction (Real-time PCR), and immunohistochemistry were used to analyze renal tissue structure and the expression of GRP78, CHOP, and related markers. ResultsCompared with the normal group, the mice in the model group showed curled posture, sluggish response, poor fur condition, increased levels of Cys-C, 24 h-UTP, 24 h-UMA, and UUN (P<0.05), while Ucr decreased (P<0.05). The GBM was significantly thickened, with podocyte and foot process fusion. The protein expressions of GRP78, CHOP, and ATF6 were significantly upregulated (P<0.05), the mRNA levels of GRP78 and CHOP increased (P<0.05), and immunohistochemistry showed an enhanced GRP78 signal (P<0.05). After treatment, the mice exhibited improved behavior, normalized GBM and podocyte structure, improved ER morphology and markedly better biochemical indicators. Western blot, Real-time PCR, and immunohistochemistry indicated that the ERS-related markers were downregulated in the DSS treatment groups (P<0.05), suggesting alleviated ERS and improved renal function. ConclusionDSS can effectively ameliorate renal pathological damage in db/db mice, possibly by regulating ERS in glomerular endothelial cells, although the underlying signaling mechanisms require further investigation.
3.Evaluation of the effect of integrated interventions on comorbidity of myopia and obesity among primary and secondary school students in Tongzhou District in Beijing
YANG Gang, YANG Dongmei, SONG Yi, LI Jing, WEN Han, CHE Jingyue, DONG Yanhui
Chinese Journal of School Health 2025;46(1):39-44
Objective:
To evaluate the intervention effectiveness of co-occurrence and prevention for myopia and obesity among primary and secondary school students, so as to provide a scientific basis for the development of comprehensive intervention measures in myopia and obesity.
Methods:
From September 2022 to September 2023, a cluster random sampling method was used to select 6 primary schools and 6 junior high schools from Tongzhou District, Beijing. Participants were randomly assigned to an intervention group (914 before intervention and 754 after intervention) and a control group (868 before intervention and 652 after intervention), with an expected duration of one academic year. Based on the RE-AIM framework, integrate resources from families, schools, communities, and medical institutions to develop a school-based intervention technology packagefor the co-occurrence and prevention of myopia and obesity in children. The intervention group received intervention according to the comprehensive intervention technology package, while the control group did not receive any intervention measures. Relevant health indicators during the baseline period and after intervention were measured and collected, and groups were compared by Chi quest test, t-test and Wilcoxon rank sum test.
Results:
After intervention, the uncorrected visual acuity of primary and secondary school students in the intervention group (4.79±0.30) and the control group (4.77±0.33) both decreased compared to those before intervention (4.80±0.30, 4.90±0.32) ( t =-7.00,-5.24); the decrease in uncorrected visual acuity in the intervention group was smaller than that in the control group( t =5.33)( P <0.01). After intervention, body mass index, waist circumference, hip circumference, and body fat percentage of primary and secondary school students in the intervention group decreased compared to those before intervention. However, the changes in these indicators were not statistically significant ( t/Z =-0.03, - 0.36,- 0.30,- 0.01, P >0.05); the above indicators in the control group increased compared to those before intervention, but only hip circumference and body fat percentage showed statistically significant changes ( t/Z =2.17, 2.62, P <0.05). After intervention, both the intervention group and the control group showed increases in systolic and diastolic blood pressure compared to those before intervention(intervention group: t =2.16,5.29; control group: t =6.84,5.07); the intervention group had lower systolic and diastolic blood pressure than the control group( t = -5.27 , -2.08)( P <0.05). After intervention, the intervention and the control groups had statistically significant differences in cognitive accuracy(92.48%, 69.33%) in terms of "outdoor exercise can prevent myopia" and "having 5 servings of adult fist sized vegetables and fruits every day" ( χ 2=6.30, 7.86, P <0.05). There was a statistically significant difference in the proportion of primary and secondary school students in the intervention group (40.98%) and the control group (35.43%) for "who did not drink sugary drinks for every day in the past 7 days" ( χ 2=4.32, P <0.05). After intervention, the intervention group and the control group showed increases in "school outdoor activity duration on school days" and "outdoor activity duration on rest days" compared to those before intervention ( t/Z =-13.32,-9.71;- 2.59,-2.69);the behavior rate of "visual acuity measurement frequency at least once every 3 months" in the intervention group (46.68%) and the control group (52.76%) increased compared to those before intervention (36.43%, 44.01%), and the increases in the intervention group were greater than that in the control group ( χ 2=17.52,11.08) ( P <0.05).
Conclusions
Comprehensive intervention measures have significant intervention effects on controlling the occurrence and development of comorbidity of myopia and obesity in children. It could actively promote collaboration and cooperation among families, schools, communities and medical institutions to reduce the occurrence of myopia and obesity among primary and secondary school students.
4.Lycium barbarum polysaccharide ameliorates ovarian granulosa cell aging in rats by activating CAMKK2/AMPK/MCU signaling pathway
Xiao-dan LIU ; Chen LING ; Lu LIU ; Jing PU ; Hai-bin MA ; Hui-ming MA ; Wen-ping ZHANG ; Dong-mei CHEN
Chinese Pharmacological Bulletin 2025;41(6):1116-1125
Aim To explore the mechanism of Lycium barbarum glycopeptide(LbGP)improving aging in rat primary ovarian granulosa cells.Methods This study divided the cells into a normal group,a DOX group,and four different LbGP concentration treatment groups post-DOX intervention.Results Cell proliferation was assessed using CCK-8,EDU,and Ki67 assays,while aging markers and mitochondrial function-related fac-tors were detected using immunofluorescence and West-ern blotting.The results showed that,compared to the DOX group,LbGP treatment significantly increased cell viability(P<0.05)and promoted proliferation(P<0.05).Post LbGP treatment,the β-galactosidase-posi-tive area in cells was significantly reduced compared to the DOX group(P<0.05).Immunofluorescence re-sults indicated that,compared to the DOX group,levels of p21 and γH2AX significantly decreased(P<0.05),while pRB increased(P<0.05)after LbGP treatment.Western blot results showed that,compared to the DOX group,the aging phenotype proteins p21 and p53 significantly decreased(P<0.05),and pRB notably increased(P<0.05)in the LbGP treatment group.The release of cytC into the cytoplasm and the activated caspase-9 significantly decreased(P<0.05);levels of CAMKK2,pAMPK,and mitochondrial calcium homeostasis regulator MCU increased(P<0.05);nuclear energy metabolism-related proteins SirT1,PGC1α/β and ATP5A1 significantly increased(P<0.05);compared to the DOX group,ROS levels significantly decreased after LbGP treatment(P<0.05).Conclusions The results suggest that LbGP can ameliorate DOX-induced aging in rat primary ovar-ian granulosa cells,potentially through the upregulation of the CAMKKβ/AMPK signaling pathway,thereby im-proving mitochondrial calcium homeostasis and increas-ing the expression levels of cell energy metabolism-re-lated regulatory proteins.This provides an experimen-tal basis for LbGP's potential role in supporting the im-provement of ovarian function.
5.Toxicokinetics of Chlorfenapyr and Its Metabolites in Rats
Wen-Yan LI ; Jin-Feng ZHAO ; Wei-Chen LIU ; Shi-Jing LÜ ; Jia-Xin ZHANG ; Xu-Dong ZHANG ; Zhi-Wen WEI ; Ke-Ming YUN ; Chao ZHANG
Journal of Forensic Medicine 2025;41(4):380-386
Objective To establish a chromatography-tandem mass spectrometry method for detecting chlorfenapyr and its metabolite tralopyril in blood,and to investigate the toxicokinetics in rats.Methods Chlorfenapyr(8 mg/kg)was administered orally to rats,and blood samples were collected from rats'canthus vein at 5 min,15 min,30 min,1 h,3 h,6 h,12 h,24 h and 48 h after administration.The blood samples were extracted using 100 μL of 5%formic acid solution and 400 μL of acetonitrile.Chlorfena-pyr was qualitatively and quantitatively detected by triple quadrupole gas chromatography-tandem mass spectrometry(GC-MS/MS)and tralopyril was detected by triple quadrupole liquid chromatography-tandem mass spectrometry(LC-MS/MS).The DAS 3.0 software was used to fit the toxicokinetic equa-tions and calculate the toxicokinetic parameters.Results Chlorfenapyr was detectable from 5 min to 24 h with a peak time of 1 h.Tralopyril was detectable from 15 min to 48 h with a peak time of 3 h.The toxicokinetic process of chlorfenapyr in rat blood conformed to a first-order absorption one-compartment open model,with the toxicokinetic equation described as C=e-0.265t-e-0.175t.Tralopyril con-formed to the first-order absorption three-compartment model,and the toxicokinetic equation was C=47 361.069e-2.209t-35 404.962e-1.486t+11 956.363e-0.512t.In the equations,C stands for the concentration of the target substance in the blood,e is the natural constant(≈2.718 28),and t stands for time.Conclu-sion This study optimized the detection method for chlorfenapyr and its metabolite tralopyril in blood.The toxicokinetic equations and parameters of chlorfenapyr and tralopyril can provide a reference for the estimation of oral intake time of chlorfenapyr.
6.Analysis of prostate cancer screening results and exploration of screening model for elderly males in Songjiang Rural Areas of Shanghai City based on PSA preliminary screening under the community linkage mode
Daocheng FANG ; Lingfeng WU ; Lixin CHEN ; Chunhua TANG ; Yong WANG ; Hui LI ; Hui WANG ; Kui ZHANG ; Shuangquan SUN ; Qiang GAO ; Mingyuan DONG ; Chao WANG ; Yi YANG ; Zhiwei YANG ; Jing LIU ; Wendi DU ; Zhenbing SHI ; Shumei BI ; Hui WEN
Chinese Journal of Preventive Medicine 2025;59(2):230-234
This study aims to analyze the screening results and epidemiological characteristics of prostate cancer (PCa) among elderly males in the rural areas of Songjiang, Shanghai City, through the implementation of a preliminary prostate-specific antigen (PSA) screening based on a community-linkage model, and to explore an effective screening approach. A retrospective observational study design was employed to collect data from residents who underwent PSA screening at Songjiang Hospital affiliated to Shanghai Jiao Tong University School of Medicine, in collaboration with multiple community health service centers in Songjiang District, Shanghai City, between June 2022 and June 2024, through free clinics and annual health examinations. Prostate biopsy was recommended for individuals with total PSA (tPSA) levels >10 ng/ml and those with 4 ng/ml≤tPSA≤10 ng/ml and abnormal free-to-total PSA (f/tPSA) ratios. Clinical characteristics of detected PCa patients were analyzed. Follow-up was conducted through phone calls and home visits by family doctors, coupled with enhanced health education. The results indicated that a total of 17 198 residents participated in the screening, among which 2 234 (12.99%) had tPSA levels between 4 ng/ml and 10 ng/ml, and 257 (1.49%) had tPSA levels >10 ng/ml. Ultimately, 417 residents underwent prostate biopsy, with 171 being diagnosed with PCa, yielding a positive biopsy rate of 41.00% and a PCa detection rate of 0.99%. The predominant pathological subtype among PCa patients was adenocarcinoma (168 cases, 98.24%). Of the 146 PCa patients who received treatment, the majority were classified as intermediate or high-risk (124 cases, 84.93%). Furthermore, with the optimization of the screening model, there was a significant increase in the proportion of subsequent outpatient visits. In conclusion, the community-linkage-based PSA screening model demonstrated high effectiveness in screening for PCa among elderly males in the rural areas of Songjiang, Shanghai City. Epidemiological findings revealed that PCa patients in this region are primarily composed of intermediate and high-risk groups, highlighting the need for intensified early screening and health education.
7.Longitudinal cross lagged analysis of body mass index and weight stigma with depressive symptom in adolescents
DONG Ziqi, SONG Xinli, YUAN Wen, LI Jing, YANG Tian, ZHANG Xiuhong, SONG Yi, DONG Yanhui
Chinese Journal of School Health 2025;46(9):1242-1245
Objective:
To explore the bidirectional associations among body mass index Z scores (BMI Z scores) and weight stigma with depressive symptoms in adolescents, thereby providing evidence for targeted intervention strategies.
Methods:
A stratified cluster random sampling method was employed to select 18 301 adolescents aged 12-18 years from all 12 prefectures (103 counties) in the Inner Mongolia Autonomous Region, and two waves of longitudinal surveys were conducted in September 2023 (T1) and September 2024 (T2) among the adolescents. Weight stigma was assessed by using a self developed questionnaire, depressive symptom was measured with the Center for Epidemiologic Studies Depression Scale (CES-D), and BMI Z scores were calculated according to the World Health Organization standards. Pearson correlation analysis was used to examine associations among variables, and cross lagged panel models were constructed to investigate the dynamic bidirectional relationships among the three variables.
Results:
Adolescents BMI Z scores and weight stigma with depressive symptoms all exhibited autoregressive stability across the two time points (autoregressive paths, all P <0.01). Cross lagged model comparisons indicated that the bidirectional path model achieved the best fit ( χ 2=12.65, RMSEA =0.017, CFI =1.000; △ χ 2=193.39, P <0.01), supporting dynamic bidirectional associations among the three variables. After adjusting for gender, age, subjective social status and only child status, T1 BMI Z scores among adolescents positively predicted T2 weight stigma ( β =0.061), and T1 weight stigma positively predicted T2 depressive symptoms ( β =0.608); in the reverse direction, T1 depressive symptoms predicted T2 weight stigma ( β =0.003), and T1 weight stigma predicted T2 BMI Z scores ( β =0.081) (all P <0.01).
Conclusions
There is a bidirectional cross lagged relationship among adolescents BMI Z scores and weight stigma with depressive symptoms, suggesting that weight stigma may serve as a key psychological variable linking obesity and depressive symptoms. Greater attention should be paid to the potential threat of weight stigma to adolescents mental health, with intervention strategies expanded from a solely physiological focus to encompass psychosocial dimensions.
8.Modified Hu-Lu-Ba-Wan Alleviates Early-Stage Diabetic Kidney Disease via Inhibiting Interleukin-17A in Mice.
Min-Min GONG ; Meng-di ZHU ; Wen-Bin WU ; Hui DONG ; Fan WU ; Jing GONG ; Fu-Er LU
Chinese journal of integrative medicine 2025;31(6):506-517
OBJECTIVE:
To identify the underlying molecular mechanism of Modified Hu-Lu-Ba-Wan (MHW) in alleviating renal lesions in mice with diabetic kidney disease (DKD).
METHODS:
The db/db mice were divided into model group and MHW group according to a random number table, while db/m mice were settled as the control group (n=8 per group). The control and model groups were gavaged daily with distilled water [10 mL/(kg·d)], and the MHW group was treated with MHW [17.8 g/(kg·d)] for 6 weeks. After MHW administration for 6 weeks, indicators associated with glucolipid metabolism and urinary albumin were tested. Podocytes were observed by transmission electron microscopy. Kidney transcriptomics was performed after confirming therapeutic effects of MHW on DKD mice. The relevant target of MHW' effect in DKD was further determined by enzyme-linked immunosorbent assay, Western blot analysis, immunohistochemistry, and immunofluorescence staining.
RESULTS:
Compared with the model group, MHW improved glucose and lipid metabolism (P<0.05), and reduced lipid deposition in the kidney. Meanwhile, MHW reduced the excretion of urinary albumin (P<0.05) and ameliorated renal damage. Transcriptomic analysis revealed that the inflammation response, particularly the interleukin-17 (IL-17) signaling pathway, may be responsible for the effect of MHW on DKD. Furtherly, our results found that MHW inhibited IL-17A and alleviated early fibrosis in the diabetic kidney.
CONCLUSION
MHW ameliorated renal damage in DKD via inhibiting IL-17A, suggesting a potential strategy for DKD therapy.
Animals
;
Diabetic Nephropathies/genetics*
;
Interleukin-17/antagonists & inhibitors*
;
Drugs, Chinese Herbal/therapeutic use*
;
Male
;
Kidney/ultrastructure*
;
Podocytes/metabolism*
;
Mice
;
Albuminuria
;
Lipid Metabolism/drug effects*
;
Mice, Inbred C57BL
9.Thermal sensitization of acupoints in patients with knee osteoarthritis: A cross-sectional case-control study.
Jian-Feng TU ; Xue-Zhou WANG ; Shi-Yan YAN ; Yi-Ran WANG ; Jing-Wen YANG ; Guang-Xia SHI ; Wen-Zheng ZHANG ; Li-Na JIN ; Li-Sha YANG ; Dong-Hua LIU ; Li-Qiong WANG ; Bao-Hong MI
Journal of Integrative Medicine 2025;23(3):289-296
OBJECTIVE:
Varied acupoint selections represent a potential cause of the uncertainty surrounding the efficacy of acupuncture for knee osteoarthritis (OA). Skin temperature, a guiding factor for acupoint selection, may help to address this issue. This study explored thermal sensitization of acupoints used for the treatment of knee OA.
METHODS:
This cross-sectional case-control study enrolled cases aged 45-75 years with symptomatic knee OA and age- and gender-matched non-knee OA controls in a 1:1 ratio. All participants underwent infrared thermographic imaging. The primary outcome was the relative skin temperature of acupoint (STA), and the secondary outcome was the absolute STA of 11 acupoints. The Z test was used to compare the relative and absolute STAs between the groups. Principal component analysis was used to extract the common factors (CFs, acupoint cluster) in the STAs. A general linear model was used to identify factors affecting the STA in the knee OA cases. For the group comparisons of relative STA, P < 0.0045 (adjusted for 11 acupoints through Bonferroni correction) was considered to indicate statistical significance. For other analyses, P < 0.05 was used as the threshold for statistical significance.
RESULTS:
The analysis included 308 participants, consisting of 151 cases (mean age: [64.58 ± 6.67] years; male: 25.83%; mean body mass index: [25.70 ± 3.16] kg/m2) and 157 controls (mean age: [63.37 ± 5.96] years; male: 26.11%; mean body mass index: [24.47 ± 2.84] kg/m2). The relative STAs of ST34 (P = 0.0001), EX-LE2 (P < 0.0001), EX-LE5 (P = 0.0006), SP10 (P < 0.0001), BL40 (P = 0.0012) and GB39 (P = 0.0037) were higher in the knee OA group. No difference was found in the STAs of ST35, ST36, SP9, GB33 and GB34. Four CFs were identified for relative STA in both groups. The acupoints within each CF were consistent between the groups. The mean values of the relative STAs across each CF were higher in the knee OA group. In the knee OA cases, no factors were observed to affect the relative STA, while age and gender were found to affect the absolute STA.
CONCLUSION
Among patients with knee OA, thermal sensitization occurs in the acupoints of the lower extremity, exhibiting localized and regional thermal consistencies. The thermally sensitized acupoints that we identified in this study, ST34, SP10, EX-LE2, EX-LE5, GB39 and BL40, may be good choices for the acupuncture treatment of knee OA. Please cite this article as: Tu JF, Wang XZ, Yan SY, Wang YR, Yang JW, Shi GX, Zhang WZ, Jing LN, Yang LS, Liu DH, Wang LQ, Mi BH. Thermal sensitization of acupoints in patients with knee osteoarthritis: A cross-sectional case-control study. J Integr Med. 2025; 23(3): 289-296.
Humans
;
Osteoarthritis, Knee/physiopathology*
;
Male
;
Cross-Sectional Studies
;
Middle Aged
;
Female
;
Acupuncture Points
;
Case-Control Studies
;
Aged
;
Skin Temperature
;
Acupuncture Therapy
10.Local overexpression of miR-429 sponge in subcutaneous white adipose tissue improves obesity and related metabolic disorders.
Liu YAO ; Wen-Jing XIU ; Chen-Ji YE ; Xin-Yu JIA ; Wen-Hui DONG ; Chun-Jiong WANG
Acta Physiologica Sinica 2025;77(3):441-448
Obesity is a worldwide health problem. An imbalance in energy metabolism is an important cause of obesity and related metabolic diseases. Our previous studies showed that inhibition of miR-429 increased the protein level of uncoupling protein 1 (UCP1) in beige adipocytes; however, whether local inhibition of miR-429 in subcutaneous adipose tissue affects diet-induced obesity and related metabolic disorders remains unclear. The aim of this study was to investigate the effect of local overexpression of miR-429 sponge in subcutaneous adipose tissue on obesity and related metabolic disorders. The control adeno-associated virus (AAV) or AAV expressing the miR-429 sponge was injected into mouse inguinal white adipose tissue. Seven days later, the mice were fed a high-fat diet for 10 weeks to induce obesity. The effects of the miR-429 sponge on body weight, adipose tissue weight, plasma glucose and lipid levels, and hepatic lipid content were explored. The results showed that the overexpression of miR-429 sponge in subcutaneous white adipose tissue reduced body weight and fat mass, decreased fasting blood glucose and plasma cholesterol levels, improved glucose tolerance, and alleviated hepatic lipid deposition in mice. Mechanistic investigation showed that the inhibition of miR-429 significantly upregulated the expression of UCP1 in adipocytes and adipose tissue. These results suggest that local inhibition of miR-429 in subcutaneous white adipose tissue ameliorates obesity and related metabolic disorders potentially by upregulating UCP1, and miR-429 is a potential therapeutic target for the treatment of obesity and related metabolic disorders.
Animals
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MicroRNAs/physiology*
;
Obesity/metabolism*
;
Mice
;
Adipose Tissue, White/metabolism*
;
Metabolic Diseases
;
Subcutaneous Fat/metabolism*
;
Male
;
Uncoupling Protein 1/metabolism*
;
Diet, High-Fat
;
Mice, Inbred C57BL


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