1.Effect of community comprehensive management model intervention among patients with dyslipidemia
GAO Hui ; XIE Liang ; YAO Chunyang ; WANG Linhong ; JIN Liu ; HU Jie
Journal of Preventive Medicine 2026;38(1):15-19
Objective:
To evaluate the effect of community comprehensive management model intervention among patients with dyslipidemia, so as to provide the reference for optimizing community management strategies and improving the target achievement rate for blood lipids among this population.
Methods:
From May to June 2023, a multi-stage stratified random sampling method was employed to select patients with dyslipidemia from primary healthcare institutions in Jiaxing City, Zhejiang Province. Eligible participants were randomly assigned to either a control group or an intervention group. The control group received routine management, while the intervention group was subjected to a community comprehensive management model in addition to the routine care. Both groups were followed up for 24 months. Data on demographic characteristics, lifestyle behaviors, physical examination indices, and blood biochemical indicators were collected at baseline and after the intervention through questionnaires, physical examinations, and laboratory tests. Changes in obesity rate, central obesity rate, target achievement rates for blood lipids, blood pressure, and blood glucose, as well as lifestyle modifications, were analyzed. Differences between the two groups before and after the intervention were assessed using generalized estimating equations (GEE).
Results:
The control group consisted of 560 patients, including 303 females (54.11%) and 430 individuals aged ≥65 years (76.79%). The intervention group also included 560 patients, with 300 females (53.57%) and 431 individuals aged ≥65 years (76.96%). Before the intervention, no statistically significant differences were observed between the two groups in terms of gender, age, educational level, history of chronic diseases, and atherosclerotic cardiovascular disease risk stratification (all P>0.05). After 24 months of intervention, interaction effects between group and time were observed for obesity rate, central obesity rate, target achievement rate for blood lipids, target achievement rate for blood glucose, composite target achievement rate, physical activity rate, and medication adherence (all P<0.05). Specifically, the intervention group demonstrated lower rates of obesity and central obesity, and higher target achievement rate of blood lipids, target achievement rate of blood glucose, composite target achievement rate, physical activity rate, and medication adherence compared to the control group.
Conclusion
The community comprehensive management model contributed to improvements in multiple metabolic parameters (including body weight, waist circumference, blood lipids, and blood glucose) among patients with dyslipidemia, and was associated with increased physical activity rate and medication adherence.
2.Retrospective analysis of leukopenia in apheresis platelet donors
Xiaomei JIE ; Jingyi CAI ; Ziyi HE ; Yatao FEI ; Yingmei LIANG
Chinese Journal of Blood Transfusion 2026;39(1):90-96
Objective: To analyze the causes and distribution characteristics of leukopenia in apheresis platelet donors, and to formulate effective pre-donation intervention measures. Methods: The data of apheresis platelet donors with leukopenia in Dongguan Central Blood Station during the entire year of 2021 were collected. Combined with the results of peripheral blood smear examination, the related factors that may cause leukopenia were analyzed. Results: There were 57 apheresis platelet donors with leukopenia in peripheral blood, with an incidence of 1.53% (57/3 726). The rate of leukopenia showed no significant difference between male and female apheresis platelet donors (χ
=0.627, P>0.05), and was not related to the frequency of platelet donation (χ
=1.48, P>0.05). However, there were statistically significant differences in the rate of leukopenia across seasons (χ
=10.13, P<0.05), highly significant differences among different age groups (χ
=22.98, P<0.001), and a significant association with the number of apheresis platelet donations (χ
=7.80, P<0.05). Multivariate logistic regression analysis showed that age (36-55 years old), number of donations (≥26 times), and season (first and fourth quarters) were independent risk factors for leukopenia in apheresis platelet donors, while gender had no significant independent effect on leukopenia. Peripheral blood smear examination was performed on all apheresis platelet donors with leukopenia, and primary malignant hematological diseases infiltrated into peripheral blood were excluded. Among them, two cases of peripheral blood smear showed left shift of granulocyte nucleus with increased and thickened granules, whereas the other 55 cases only showed decreased peripheral blood nucleated cell counts without obvious morphological abnormalities. Conclusion: Leukopenia in apheresis platelet donors mainly occurred in young and middle-aged people and those with ≥26 donations, with high incidence in winter and spring, and more common in males. Blood routine examination combined with blood smear examination can facilitate the detection of conditions that are not suitable for blood donation, including hematological malignant diseases and infection-related leukopenia. Strengthening health consultation before blood donation is an important measure to identify blood donors with leukopenia.
3.Exploring Mechanism of Anti-atherosclerosis Effect of Huangqi Chifengtang Based on AMPK/PPARα Signaling Pathway and NLRP3 Inflammasome
Yuqin LIANG ; Jie LIU ; Chi ZHANG ; Pingping CHEN ; Fang LU ; Shumin LIU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(1):131-139
ObjectiveTo explore the improving effect of Huangqi Chifengtang(HCT) on atherosclerosis(AS), and elucidate its mechanism in relation to adenosine monophosphate-activated protein kinase(AMPK)/peroxisome proliferator-activated receptor α(PPARα) signaling pathway and nucleotide-binding oligomerization domain(NOD)-like receptor thermal protein domain associated protein 3(NLRP3) inflammasome. MethodsEight C57BL/6J mice were set as the normal group, and 32 ApoE-/- mice were randomly divided into the model group, the positive drug group(atorvastatin, 5 mg·kg-1·d-1), HCT low- and high-dose groups(1.95, 3.90 g·kg-1·d-1). ApoE-/- mice were fed with high-fat and high-cholesterol feed to establish an AS mouse model. After modeling, they were orally administered corresponding dose of drugs for 28 days, while the normal and model groups received an equal volume of physiological saline via oral gavage. Hematoxylin-eosin(HE) staining was used to observe the pathological status of the aorta and liver in mice, Biochemical testing and enzyme-linked immunosorbent assay(ELISA) were used to detect the levels of total cholesterol(TC), triglycerides(TG), low-density lipoprotein cholesterol(LDL-C), alanine aminotransferase(ALT), aspartate aminotransferase(AST), C-reactive protein(CRP), interleukin(IL)-1β, IL-18 in the serum, as well as superoxide dismutase(SOD), malondialdehyde(MDA), and reduced glutathione(GSH) in the liver. Real-time fluorescence quantitative polymerase chain reaction(Real-time PCR) was used to measure the mRNA expression levels of NLRP3, apoptosis-associated speck-like protein(ASC), cysteinyl aspartate specific proteinase-1(Caspase-1), Toll-like receptor 4(TLR4) in the aorta, and fatty acid synthase(FAS), stearoyl-CoA desaturase 1(SCD1), PPARα, and carnitine palmitoyltransferase 1A(CPT1A) in the liver. Immunohistochemistry was used to determine the protein expressions of NLRP3, Caspase-1, and ASC in the aorta, and Western blot was used to measure the protein expressions of AMPK, p-AMPK, sterol regulatory element binding protein-1c(SREBP-1c), CPT1A, and FAS in the liver. ResultsCompared with the normal group, the model group showed a significant increase in lipid plaque deposition in the aorta and lipid accumulation in the liver, the levels of TC, TG, LDL-C, AST, ALT, IL-1β, IL-18 and CRP in the serum were significantly increased(P<0.01), and the mRNA and protein expressions of aortic TLR4, NLRP3, Caspase-1 and ASC were significantly upregulated(P<0.01). The levels of SOD and GSH in the liver were significantly reduced, while the level of MDA was significantly increased(P<0.01). The mRNA expressions of FAS and SCD1 in the liver were significantly downregulated, while the mRNA expressions of PPARα and CPT1A were significantly upregulated. The protein expressions of p-AMPK/AMPK and CPT1A in the liver were significantly reduced, while the expressions of SREBP-1c and FAS proteins were significantly increased(P<0.01). Compared with the model group, the low- and high-dose HCT groups showed significant improvements in aortic plaques and hepatic lipid deposition. The levels of TC, LDL-C, AST, IL-1β and IL-18 in the serum of the low-dose HCT group, as well as TC, TG, LDL-C, AST, ALT, IL-1β, IL-18 and CRP in the serum of the high-dose HCT group, were significantly reduced(P<0.01). The mRNA expressions of TLR4, NLRP3 and Caspase-1 in the aorta of the low-dose HCT group, as well as TLR4, NLRP3, Caspase-1 and ASC in the aorta of the high-dose HCT group, were significantly downregulated(P<0.01). The protein expressions of Caspase-1 and ASC in the aorta of the low-dose HCT group, as well as NLRP3, Caspase-1 and ASC in the high-dose HCT group, were significantly downregulated(P<0.01). The levels of SOD and GSH in the liver of the low- and high-dose HCT groups were significantly increased, while the level of MDA in the high-dose HCT group was significantly decreased(P<0.05, P<0.01). In the HCT-treated group, the mRNA expressions of FAS and SCD1 in the liver were significantly upregulated, while the mRNA expressions of PPARα and CPT1A were significantly downregulated, the protein expressions of p-AMPK/AMPK and CPT1A in the liver were significantly increased, while the protein expressions of SREBP-1c and FAS were significantly decreased(P<0.05, P<0.01). ConclusionHCT can improve lipid metabolism by activating the AMPK/PPARα pathway and inhibit NLRP3 inflammasome-mediated inflammatory responses, thereby reducing hepatic lipid deposition and AS plaque formation.
4.Comparison of sleep EEG power spectral density between depressive episode patients and schizophrenia patients with suicidal behavior
Jingwen LIU ; Yunfei ZHOU ; Jingchu HU ; Jiaoyan ZHOU ; Junwei YANG ; Jie LIANG ; Hong XU ; Yu CANG ; Shimeng MA
Sichuan Mental Health 2026;39(1):50-57
BackgroundPatients with depressive episode and schizophrenia have a high risk of suicide. The sleep electroencephalogram power spectral density characteristics of patients with depressive episode accompanied by suicidal behavior and those with schizophrenia may be different, but there is currently a lack of direct comparative studies on these two groups of patients. ObjectiveTo compare the sleep electroencephalogram power spectral density between depressive episode and schizophrenic patients with suicidal behavior, in order to provide references for exploring predictive indicators of suicidal behavior. MethodsFrom June 2018 to December 2020, 20 patients with depressive episode and 20 patients with schizophrenia who had committed suicide within the past month and were treated at the outpatient department of Shenzhen Kangning Hospital were selected. All of them met the diagnostic criteria for depressive episode or schizophrenia as defined in the International Classification of Diseases, tenth edition (ICD-10). Using a random sampling method, 20 volunteers with matching gender and age to the patient groups were selected from the Cuiping community in Shenzhen as the control group. The subjective sleep of the patients was evaluated using the Insomnia Severity Index (ISI), the Dysfunctional Belief and Attitude about Sleep (DBAS), the Disturbing Dreams and Nightmare Severity Index (DDNSI), and the Epworth Somnolence Scale (ESS). The objective sleep of the patients was assessed using polysomnography. The sleep electroencephalogram was filtered and the power spectral density of the brain wave was analyzed and processed for all the subjects. The subjective and objective sleep conditions of the two patient groups were compared, and the sleep electroencephalogram power spectral density of the patient groups and the control group were also compared. ResultsA comparison of subjective and objective sleep conditions between patients with depressive episode accompanied by suicidal behavior and patients with schizophrenia accompanied by suicidal behavior showed no statistically significant differences (P>0.05). Comparisons of sleep electroencephalogram power spectral density in the W stage (average power of α wave, total power of δ wave, average power of δ wave, average power of θ wave), N1 stage (average power of β wave, total power of α wave, total power of δ wave), N2 stage (total power of α wave, average power of α wave, total power of δ wave, average power of δ wave), N3 stage (average power of α wave, average power of δ wave), and R stage (total power of α wave, average power of α wave, total power of δ wave, average power of δ wave) between patients with depressive episode accompanied by suicidal behavior, patients with schizophrenia accompanied by suicidal behavior, and the control group showed statistically significant differences (P<0.05 or 0.01). The total power of δ wave in the W stage and the average power of β wave and δ wave in the N1 stage were higher in two patient groups were higher than those of the control group. The total power of α wave and the average power of α wave in the N2 stage were lower than those of the control group, while the average power of δ wave was higher than that of the control group. The average power of α wave in the N3 stage of both patient groups were lower than that of the control group, while the average power of δ wave was higher than that of the control group. The total power and average power of α wave in the R stage were lower than those of the control group, while the total power and average power of δ wave were higher than those of the control group. All the differences were statistically significant. Patients with depressive episode accompanied by suicidal behavior had higher average powers of α wave, δ wave, and θ wave in the W stage compared with the control group, while the total power of α wave in the N1 stage was lower in the former group. All these differences were statistically significant (P<0.05). ConclusionThe depressive episode patients accompanied by suicidal behavior have highly overlapping sleep electroencephalogram abnormal patterns with those of schizophrenia patients, mainly manifested as a general decrease in α wave power (N2, N3, R stage) and a general increase in δ wave power (W, N1, N2, N3, R stage) as well as β wave power in N1 stage. At the same time, patients with depressive episode accompanied by suicidal behavior also show specific changes, including an increase in the average power of α and θ waves during the wakefulness period (W stage), and a decrease in the total power of α wave in N1 stage. [Funded by Guangdong Province High-level Clinical Key Specialty (with supporting funds from Shenzhen City) (number, SZGSP013); Shenzhen Key Medical Discipline (number, SZXK041); Shenzhen Clinical Medicine Research Center Project (number, 20210617155253001)]
5.Retrospective analysis of a tuberculosis outbreak among junior high school students in Chongqing
LI Jianqiong, ZHANG Ting, CHEN Aihua, WANG Qingya, ZHANG Ya, CHEN Jian, TANG Jie, LI Liang
Chinese Journal of School Health 2026;47(5):741-746
Objective:
To analyze changes in tuberculosis infection among junior high school students before and after tuberculosis exposure, so as to provide a reference for improving school tuberculosis prevention and control measures and policy formulation.
Methods:
Retrospectively collect data on a tuberculosis outbreak that occurred in a grade of a junior high school in Chongqing in 2025, including tuberculosis screening records of students in this grade upon their enrollment in 2022 (1 156 students) and after two tuberculosis outbreaks in 2023 (206 students) and 2025 (171 students). The Wilcoxon signed rank test for paired design was used to compare the induration diameters of the subjects, and the Chi square test was adopted to analyze the rate of tuberculosis infection among students.
Results:
In the tuberculosis outbreak in 2023, the rate of tuberculosis infection among close contacts ( 11.84 %) and the rate of tuberculosis infection among freshrman at school enrollment (12.89%) showed no statistically significant difference ( χ 2=0.25, P >0.05). The rate of tuberculosis infection of close contacts in the 2025 tuberculosis outbreak (55.56%) was higher than that in the 2023 outbreak (11.84%) ( χ 2=30.42, P <0.01). Among the 106 students included in the cohort analysis, the median induration diameter was 3.50 (1.50, 7.50) mm in 2023 and 8.75 (4.25, 11.50) mm in 2025, with a statistically significant difference ( Z=-5.76, P <0.01). There was no statistically significant difference between the infection rate in 2022 (16.98%) and that in 2023 (10.38%) ( χ 2=1.96, P =0.16). The infection rate in 2025 (43.40%) was higher than those in 2022 and 2023 ( χ 2=17.55, 29.39, both P <0.017). The seroconversion rate of students in the same class in 2025 ( 58.00 %) was higher than that of students in different classes (16.07%), with a statistically significant difference ( χ 2=20.19, P <0.01). All 72 individuals with latent tuberculosis infections identified during the pandemic in 2023 and 2025 refused to undergo prophylactic treatment.
Conclusions
The lack of preventive treatment may be the underlying cause of the successive outbreaks during the epidemic. Early detection of infection sources and standardized outbreak management are crucial to controlling the spread of the epidemic.
6.Trends and gender differences in height and weight of primary and secondary school students in Shiyan City, 2015-2024
Peidong YANG ; Liang ZHAO ; Weidong HE ; Jie YANG ; Fang XU ; Rongmei WAN ; Feijia CHEN ; Jun ZHAO
Journal of Public Health and Preventive Medicine 2026;37(3):90-93
bjective To analyze the growth trends of height and weight among primary and secondary school students, and explore the developmental characteristics and gender differences at different age groups, and to provide a scientific basis for adolescent health policy formulation. Methods Based on 675 175 health examination records of 227 978 students aged 6-17 years in Shiyan City from 2015 to 2024, a logistic growth model was employed to fit the curves of height and weight changes with age. Results From 2015 to 2024, height and weight showed steady increases across all age groups, exhibiting typical sigmoidal growth patterns. The growth rates varied across age groups: the younger age group (6-9 years) showed a moderate growth (annual height increase of 0.5-1.0 cm, weight increase of 0.03-0.06 kg/year), while the older age group (10-17 years) demonstrated a significant growth (annual height increase of 1.5-2.0 cm, weight increase of 0.22-0.38 kg/year). The growth rate curves displayed a unimodal distribution. The growth inflection points of male students occurred later than that of female students (height inflection point: 9.87 years for males vs. 8.98 years for females; weight inflection point: 10.70 years for males vs. 9.99 years for females). Female students experienced a more concentrated but shorter period of growth and development. The peak height growth rate was 7.40 cm/year at age 9 for females and 7.09 cm/year at age 10 for males, while the peak weight growth rate was 5.04 kg/year at age 10 for females and 5.27 kg/year at age 11 for males. Conclusion The physical development of primary and secondary school students in Shiyan City follows a logistic growth pattern, with significant gender differences and characteristics of adolescent growth spurts. Female students exhibit an earlier and more concentrated growth process.
7.Acetyl-coenzyme A synthetase 2-mediated acetyl-coenzyme A accumulation promotes mitophagy and tumor growth via increased H3K27ac in hepatitis B virus-related hepatocellular carcinoma
Shan LI ; Jie HU ; Yihan YAN ; Xinrui LIU ; Xiao DONG ; Huijun LIANG ; Xin TANG ; Junji TAO ; Rong ZHANG ; Yuan HU ; Ailong HUANG ; Kai WANG ; Ni TANG
Clinical and Molecular Hepatology 2026;32(2):661-682
Background/Aims:
Acetyl coenzyme A (acetyl-CoA) is one of the most essential metabolites in cell metabolism but its function and concentration in hepatocellular carcinoma (HCC) remain elusive and controversial.
Methods:
A comprehensive analysis of acetyl-CoA levels and acetyl-CoA synthetase 2 (ACSS2) expression across a range of samples, including patient specimens from both hepatitis B virus (HBV) positive and HBV negative HCC individuals, HBV-transgenic mouse HCC models, and multiple cell lines. Furthermore, to evaluate the functional significance of ACSS2 in HBV-related HCC, we implemented both genetic and pharmacological inhibition strategies targeting ACSS2. Molecular mechanism and mitophagy assessment were revealed by cleavage under target and tagmentation sequencing, RNA sequencing, bioinformatic analyses, transmission electron microscopy and JC-1 staining.
Results:
Our study revealed a distinct metabolic signature of HBV-related HCC, marked by elevated acetyl-CoA, which was driven by ACSS2. ACSS2 was upregulated by the carbohydrate response element-binding protein in HBV-related HCC. Furthermore, ACSS2 improved tumor cell proliferation, an effect that was dependent on its enzymatic activity. Mechanistically, ACSS2-induced acetyl-CoA accumulation activated voltage-dependent anion channels 1 transcription through increased H3K27ac occupancy, which subsequently promoted mitophagy and HBV-related HCC tumorigenesis. Notably, targeting ACSS2 by depletion or inhibition with a catalytic inhibitor significantly suppressed tumor growth.
Conclusions
These findings not only illustrate the interplay between metabolic reprogramming, epigenetic modification, and tumorigenesis in the context of HBV infection, but also highlight ACSS2 as a novel metabolic vulnerability in HBV-related HCC. Therefore, targeting ACSS2 could be a novel strategy against HBV-related HCC.
8.Mechanism of active ingredient compatibility of Dimocarpus longan Lour. leaves in improving glucose and lipid metabolism disorders in type 2 diabetic mellitus rats
Yanli LIANG ; Shijia AN ; Fengsheng LI ; Jiani MAI ; Anqi HUO ; Jiali WEI ; Zejuan ZHANG ; Shuyan QIN ; Wenqing HUANG ; Jie LIANG
China Pharmacy 2026;37(13):1697-1703
OBJECTIVE To explore the mechanism of the active ingredient compatibility(quercetin, quercitrin and kaempferol at a mass ratio of 2∶9∶3)of Dimocarpus longan Lour. leaves(abbreviated as CDL) on ameliorating glucose and lipid metabolism disorders in type 2 diabetes mellitus (T2DM) rats. METHODS SD rats were randomly divided into blank control group, model group, metformin hydrochloride group (100 mg/kg), and CDL high-, medium- and low-dose groups (280, 140, 75 mg/kg), with 10 rats in each group. Rats in the blank control group were fed with standard chow, while rats in the other groups were given high-sugar and high-fat diet combined with intraperitoneal injection of streptozotocin to establish the T2DM rat model. After successful modeling, rats in each administration group were given corresponding drug solution, and rats in the blank control group and model group were intragastrically administered with equal volume of pure water, once a day, for consecutive 4 weeks. Fasting blood glucose (FBG) was detected at fixed time every week. The curves of oral glucose tolerance test (OGTT) and intraperitoneal insulin tolerance test (IPITT) were plotted, and the area under curve (AUC) was calculated. The pancreatic islet function indexes [fasting insulin (FINS), homeostasis model assessment of insulin resistance (HOMA-IR), insulin sensitivity index (ISI)],blood lipid indexes [total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C)] and hepatic glycogen content were determined. The pathological morphological changes of liver and pancreatic tissues were observed. The protein and mRNA expression levels of molecules related to phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway in liver tissues were detected. RESULTS Compared with the blank control group, the FBG, AUC of IPITT curve, AUC of OGTT curve, HOMA-IR, the levels of FINS, TC, TG and LDL-C, as well as the protein and mRNA expression of phosphatase and tensin homolog, forkhead box protein O1 and glycogen synthase kinase-3β in liver tissues were significantly increased in the model group ( P <0.05). ISI, the levels of HDL-C and hepatic glycogen content, along with the protein and mRNA expression of PI3K, insulin receptor substrate-1, Akt and protein expression of phosphorylated Akt in liver tissues were markedly decreased ( P <0.05). In model group rats, the arrangement of hepatocytes was irregular, the overall structure of pancreatic lobules was disordered, and a large number of inflammatory cell infiltration was observed. Compared with the model group, most of the above quantitative indexes were significantly reversed in the CDL high-dose group ( P <0.05), and the pathological lesions of liver and pancreas were obviously alleviated. CONCLUSIONS CDL can regulate glucose and lipid metabolism disorders, elevate insulin sensitivity and relieve insulin resistance in T2DM rats. Its mechanism may be related to the activation of the PI3K/Akt signaling pathway.
9.Dual Targeting of TBK1 and JAK-STAT1 Pathways by (-)-epigallocatechin-3-gallate Suppresses Type I Interferon-driven Inflammation
Liang LI ; Qi-Huan SHENG ; Huan LIU ; Wen-Hao YANG ; Jia-Lin SHI ; Ying-Jie SUN ; Rui JING ; Wei-Hua MAI ; Zhi-Min LI ; Xiao-Li XIE
Progress in Biochemistry and Biophysics 2026;53(7):1969-1983
ObjectiveType I interferon (IFN-I) signaling is essential for antiviral innate immunity, yet its sustained or excessive activation contributes to the pathogenesis of several autoimmune diseases and interferonopathies, such as systemic lupus erythematosus and Aicardi-Goutières syndrome. Current strategies targeting this pathway, exemplified by JAK inhibitors, act mainly on downstream signal transduction and provide limited direct control over upstream IFN-I production, while also carrying the risk of broad immunosuppression. Phyllanthus emblica L. has long been used in traditional medicine for inflammatory disorders, but the bioactive constituent responsible for its regulation of IFN-I signaling and the underlying molecular mechanism have not been clearly defined. This study aimed to identify the active anti-inflammatory component of P. emblica and to characterize its mechanism of action on the IFN-I pathway in macrophages. MethodsActive components ofP. emblica and their candidate targets were screened by network pharmacology using the TCMSP and DrugBank databases (oral bioavailability≥30%, drug-likeness≥0.18) and intersected with inflammation-related genes retrieved from public databases. The predicted interaction between EGCG and IFN-I pathway proteins (TBK1, IRF3, STAT1) was evaluated by molecular docking, with BX795 and GSK8612 used as reference TBK1 inhibitors. Mechanistic experiments were performed in THP-1-derived macrophages and primary bone marrow-derived macrophages (BMDM). Upstream signaling was activated by transfection of the nucleic acid analogs poly(I∶C) and poly(dA∶dT) or by lipopolysaccharide (LPS) stimulation, whereas downstream signaling was activated by exogenous IFN-β. An siRNA-mediated TREX1 knockdown model was used to mimic endogenous nucleic acid-driven interferonopathy. Expression of IFN-β1 and interferon-stimulated genes (ISGs) was measured by RT-qPCR, protein phosphorylation by Western blot, and IFN-β secretion by ELISA. Cellular thermal shift assay (CETSA) and drug affinity responsive target stability (DARTS) were used to probe the interactionbetween EGCG and IRF3. ResultsNetwork pharmacology identified (-)-epigallocatechin-3-gallate (EGCG) as a candidate IFN-I-suppressive constituent of P. emblica, with predicted binding to TBK1, IRF3, and STAT1. Molecular docking yielded binding energies of -9.2, -7.2, and -8.2 kcal/mol for TBK1, IRF3, and STAT1, respectively, indicating an affinity for TBK1 comparable to that of the reference inhibitors BX795 (-5.7 kcal/mol) and GSK8612 (-6.4 kcal/mol). EGCG suppressed IFN-β1 and ISG mRNA expression under poly (I∶C), poly (dA∶dT), and LPS stimulation in both THP-1 macrophages and BMDM. At the protein level, EGCG reduced the phosphorylation of TBK1 and IRF3 without affecting the levels of the upstream sensors cGAS and RIG-I, and lowered IFN-β secretion in a concentration-dependent manner. CETSA and DARTS showed that EGCG did not enhance the thermal stability or protease resistance of IRF3, indicating that its effect on IRF3 is indirect. Following IFN-β stimulation, prolonged EGCG treatment reduced STAT1 phosphorylation in a time-dependent manner without an apparent change in IRF9, and partially attenuated ISG transcription; this effect was not monotonicly concentration-dependent, and CXCL10 showed the most consistent suppression. In TREX1-knockdown cells, the elevated mRNA levels of ISG15, ISG56, and CXCL10 were reduced by EGCG. ConclusionEGCG suppresses IFN-I responses by concurrently inhibiting TBK1-IRF3-dependent IFN‑β production and JAK-STAT1-mediated downstream transcription. These in vitro findings provide a mechanistic basis for the anti-inflammatory use of P. emblica in traditional medicine and identify EGCG as a candidate for further evaluation in interferon-driven autoimmune disease models.
10.Mechanism of active ingredient compatibility of Dimocarpus longan Lour. leaves in improving glucose and lipid metabolism disorders in type 2 diabetic mellitus rats
Yanli LIANG ; Shijia AN ; Fengsheng LI ; Jiani MAI ; Anqi HUO ; Jiali WEI ; Zejuan ZHANG ; Shuyan QIN ; Wenqing HUANG ; Jie LIANG
China Pharmacy 2026;37(13):1697-1703
OBJECTIVE To explore the mechanism of the active ingredient compatibility(quercetin, quercitrin and kaempferol at a mass ratio of 2∶9∶3)of Dimocarpus longan Lour. leaves(abbreviated as CDL) on ameliorating glucose and lipid metabolism disorders in type 2 diabetes mellitus (T2DM) rats. METHODS SD rats were randomly divided into blank control group, model group, metformin hydrochloride group (100 mg/kg), and CDL high-, medium- and low-dose groups (280, 140, 75 mg/kg), with 10 rats in each group. Rats in the blank control group were fed with standard chow, while rats in the other groups were given high-sugar and high-fat diet combined with intraperitoneal injection of streptozotocin to establish the T2DM rat model. After successful modeling, rats in each administration group were given corresponding drug solution, and rats in the blank control group and model group were intragastrically administered with equal volume of pure water, once a day, for consecutive 4 weeks. Fasting blood glucose (FBG) was detected at fixed time every week. The curves of oral glucose tolerance test (OGTT) and intraperitoneal insulin tolerance test (IPITT) were plotted, and the area under curve (AUC) was calculated. The pancreatic islet function indexes [fasting insulin (FINS), homeostasis model assessment of insulin resistance (HOMA-IR), insulin sensitivity index (ISI)],blood lipid indexes [total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C)] and hepatic glycogen content were determined. The pathological morphological changes of liver and pancreatic tissues were observed. The protein and mRNA expression levels of molecules related to phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway in liver tissues were detected. RESULTS Compared with the blank control group, the FBG, AUC of IPITT curve, AUC of OGTT curve, HOMA-IR, the levels of FINS, TC, TG and LDL-C, as well as the protein and mRNA expression of phosphatase and tensin homolog, forkhead box protein O1 and glycogen synthase kinase-3β in liver tissues were significantly increased in the model group ( P <0.05). ISI, the levels of HDL-C and hepatic glycogen content, along with the protein and mRNA expression of PI3K, insulin receptor substrate-1, Akt and protein expression of phosphorylated Akt in liver tissues were markedly decreased ( P <0.05). In model group rats, the arrangement of hepatocytes was irregular, the overall structure of pancreatic lobules was disordered, and a large number of inflammatory cell infiltration was observed. Compared with the model group, most of the above quantitative indexes were significantly reversed in the CDL high-dose group ( P <0.05), and the pathological lesions of liver and pancreas were obviously alleviated. CONCLUSIONS CDL can regulate glucose and lipid metabolism disorders, elevate insulin sensitivity and relieve insulin resistance in T2DM rats. Its mechanism may be related to the activation of the PI3K/Akt signaling pathway.


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