1.Construction of Risk Prediction Model for Frequent Acute Exacerbations of Chronic Obstructive Pulmonary Disease Under Disease-syndrome Combination
Jing ZHOU ; Gang TENG ; Nianzhi ZHANG ; Yuanyuan WANG ; Qianqian ZHANG ; He HUANG ; Ling LIU ; Mei DONG ; Juan JI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(6):143-151
ObjectiveTo construct a risk prediction model for frequent acute exacerbations of chronic obstructive pulmonary disease (COPD) under disease-syndrome combination, thus providing decision support for precise clinical intervention. MethodsA total of 2 029 patients with acute exacerbations of COPD admitted to the First Affiliated Hospital of Anhui University of Chinese Medicine from January 2020 to August 2024 were retrospectively included. These patients were classified into groups of frequent acute exacerbations (≥2 times/year) and infrequent acute exacerbations (<2 times/year) according to the hospitalization times per year. Risk factors were screened by LASSO regression combined with logistic regression, and a nomogram model was constructed. The model performance was assessed based on the area under the curve (AUC), calibration curves, and decision curve analysis (DCA). ResultsThe differences in baseline characteristics between the frequent acute exacerbations group (1 196 cases) and infrequent acute exacerbations group (833 cases) were not statistically significant. LASSO regression combined with multivariate logistic regression screened the following independent risk factors: body mass index (BMI), hospitalization days, number of smoking years, place of residence, use of noninvasive ventilators, oxygen-demanding therapy, liver cirrhosis, use of systemic glucocorticosteroids, and traditional Chinese medicine syndrome (phlegm and stasis obstructing the lung). The nomogram model showed good discrimination and calibration in both the training set (AUC=0.748) and validation set (AUC=0.774). ConclusionThe risk prediction model for frequent acute exacerbations of COPD, integrating traditional Chinese medicine syndrome, constructed in this study has high accuracy. It can provide a scientific basis for early clinical identification of high-risk patients and individualized intervention.
2.Expert Consensus on Clinical Application of Qidong Yixin Oral Liquid
Changkuan FU ; Xiaochang MA ; Mingjun ZHU ; Yue DENG ; Hongxu LIU ; Mingxue ZHANG ; Ying CHEN ; Yan ZHOU ; Ling ZHANG ; Jianhua FU ; Wei YANG ; Yu'er HU ; Ming CHEN ; Yanming XIE ; Yuanyuan LI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(4):147-158
The prescription of Qidong Yixin oral liquid is derived from the experience of national medical master Ren Jixue in treating viral myocarditis (VMC). It has the functions of tonifying Qi, nourishing the heart,calming the mind, and relieving palpitations. It is used to treat VMC and angina pectoris of coronary heart disease caused by deficiency of both Qi and Yin. However,the understanding of its efficacy evidence, advantageous aspects, dosage and administration, and medication safety remains insufficient in clinical practice. Therefore,the development of the Expert Consensus on the Clinical Application of Qidong Yixin Oral Liquid (hereinafter referred to as consensus) was initiated. Consensus strictly followed the process and methods of the expert consensus on the clinical application of Chinese patent medicines of the China Association of Chinese Medicine,successively completing multiple tasks such as the consensus project initiation,determination of clinical problems,evidence search and evaluation,formation of recommendation opinions and consensus suggestions,solicitation of opinions,peer review, submission for review and release, and so on. Consensus formed a total of 10 recommendation opinions and 12 consensus suggestions,clarifying the clinical positioning,efficacy advantages,syndrome differentiation,dosage and administration,combination therapy,timing of medication,adverse reactions,contraindications, and precautions of Qidong Yixin oral liquid,indicating that it has good clinical advantages and safety in the treatment of VMC and angina pectoris of coronary heart disease,providing norms and references for physicians to safely and rationally apply Qidong Yixin oral liquid. Consensus was reviewed and approved for release by the Standardization Office of the China Association of Chinese Medicine on December 23, 2024. Standard number:GSCACM-376-2024.
3.Perioperative immune dynamics and clinical outcomes in patients undergoing on-pump cardiac surgery
Zhiyuan CHENG ; Xinyi LIAO ; Juan WU ; Ping YANG ; Tingting WANG ; Qinjuan WU ; Wentong MENG ; Zongcheng TANG ; Jiayi SUN ; Jia TAN ; Jing LIN ; Dan LUO ; Hao WANG ; Chaonan LIU ; Jiyue XIONG ; Liqin LING ; Jing ZHOU ; Lei DU
Chinese Journal of Blood Transfusion 2026;39(1):31-43
Objective: To characterize perioperative dynamic changes in immune-cell phenotypes and inflammatory cytokines in patients undergoing CPB (cardiopulmonary bypass) cardiac surgery, and to explore their associations with postoperative outcomes. Methods: In this prospective cohort study, 120 adult patients who underwent elective cardiac surgery under CPB at West China Hospital from May 2022 to March 2023 were enrolled. Perioperative immune-cell phenotypes and concentrations of 40 inflammation-related cytokines were measured. The primary outcomes were the sequential organ failure assessment (SOFA) score at 24 h after surgery and ΔSOFA (the peak SOFA score within 48 h after surgery minus the preoperative SOFA score). Secondary outcomes included major adverse cardiovascular events (MACE), acute kidney injury (AKI), respiratory failure, severe liver injury, and infection. Results: The mean age of enrolled patients was 57±10 years. Of these, 52% (62/120) were male and 90% (108/120) underwent valve surgery. During the rewarming to the end of CPB, neutrophil counts rapidly increased (7.39×10
/L vs preoperative 3.07×10
/L, P<0.001), with significant upregulation of CD11b (7.30×10
/L vs preoperative 3.05×10
/L, P<0.001) and CD54 (7.15×10
/L vs preoperative 2.99×10
/L, P<0.001). Lymphocyte counts increased at the end of CPB (1.75×10
/L vs preoperative 1.12×10
/L, P<0.001) but decreased significantly at 24 h after surgery (0.59×10
/L vs preoperative 1.12×10
/L, P<0.001). Plasma analysis showed that multiple pro-inflammatory cytokines increased during CPB and remained elevated up to 24 h after surgery; five chemokines and the anti-inflammatory cytokine IL-10 peaked at the end of CPB. The SOFA score increased from 1 (1, 2) preoperatively to 7 (5, 10) at 24 h after surgery, with a ΔSOFA of 6 (4, 8). Within 30 days after surgery, 48 patients (40.0%) developed AKI, 17 (14.2%) developed infection, 4 (3.3%) developed severe liver injury, 3 (2.5%) developed respiratory failure, and 3 (2.5%) experienced MACE. During the 2-year follow-up, 8 patients (6.7%) experienced MACE and 5 (4.2%) died. Conclusion: Multi-organ dysfunction is common after cardiac surgery under CPB (median ΔSOFA, 6), accompanied by perioperative activation of multiple immune-cell subsets and upregulation of pro-inflammatory, anti-inflammatory, and chemotactic mediators. This study provides data-driven evidence and research clues for further investigation of the associations between CPB-related immune perturbations and postoperative organ dysfunction and clinical outcomes.
4.Epidemic trends and prevention and control effectiveness of notifiable infectious diseases in Yichang City based on interrupted time series
Qian WU ; Hao ZHANG ; Zhongcheng YANG ; Ling ZHOU ; Yi LIANG ; Yajun CAO
Journal of Public Health and Preventive Medicine 2026;37(1):88-92
Objective To analyze the epidemiological characteristics of statutory infectious diseases in Yichang City from 2015 to 2023 and evaluate the effectiveness of non-pharmaceutical interventions (NPIs) in infectious disease prevention and control, and to provide a basis for formulating prevention and control strategies. Methods Descriptive epidemiological methods were used to analyze annual incidence rates. SARIMA and SARIMA intervention models were constructed to predict the incidence rates of infectious diseases. Interrupted time series analysis (ITS) was applied to assess the control effectiveness. Results The average annual incidence rate from 2015 to 2023 was 787.47/100 000, with the top five diseases being influenza, hand-foot-and-mouth disease, hepatitis B, tuberculosis, and diarrheal diseases. The average incidence rate from 2015 to 2019 (654.31/100 000) was significantly higher than that from 2020 to 2022 (489.01/100 000) (χ2= 3 499.6, P < 0.05). The total incidence rate in 2023 (2 396.51/100 000) was significantly higher than the average annual incidence rates from 2015-2019 (χ2= 108 186.1, P < 0.05) and 2020-2022 (χ2= 112 869.4, P < 0.05). SARIMA model results indicated that the actual incidence rate from 2020 to 2022 decreased by 73.49% compared to the predicted rate without intervention, with the highest decline observed in respiratory infectious diseases (79.57%). The SARIMA-intervention model showed a 55.48% relative decrease in the total incidence rate for 2023, with the largest reduction in respiratory infectious diseases (63.28%) and a slight increase in intestinal infectious diseases (5.48%). Conclusion NPIs effectively reduce the incidence of statutory infectious diseases in the short term, especially for acute respiratory and intestinal infectious diseases. However, long-term effectiveness faces challenges, necessitating the development of differentiated prevention and control strategies.
5.Acacetin Ameliorates Hyperuricemia by Regulating Uric Acid Transporter and NF-κB/NLRP3 Signaling Pathway
Xuanxia WU ; Juan BU ; YELEDAN·MAHAN ; Shengnan ZHANG ; Xiaoling ZHANG ; Ling ZHOU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(1):191-198
ObjectiveTo investigate the uric acid-lowering effects and mechanisms of acacetin on hyperuricemia (HUA) in mice. MethodsOteracil potassium and adenine were used to establish the mouse model of HUA. Male Kunming mice (n=48) were randomized into six groups: control, model, low-dose (12.5 mg·kg-1) acacetin, medium-dose (25 mg·kg-1) acacetin, high-dose (50 mg·kg-1) acacetin, and allopurinol (10 mg·kg-1). Each group received continuous gavage administration for 21 days. An automatic biochemical analyzer was used to measure the levels of uric acid (UA), creatinine (Cr), urea nitrogen (BUN), alanine aminotransferase (ALT) and aspartate aminotransferase (AST). Additionally, the activity of xanthine oxidase (XOD) in the liver and the levels of tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-18 in the serum were measured by enzyme-linked immunosorbent assay (ELISA). Pathological changes in the renal tissue were observed by hematoxylin-eosin (HE) staining. Western blot was employed to determine the levels of glucose transporter 9 (GLUT9), urate transporter 1 (URAT1), phospho-NF-κB p65 (p-NF-κB p65), and nucleotide-binding oligomerization domain-like receptor pyrin domain-containing 3 (NLRP3) in the renal tissue. ResultsCompared with the control group, the model group showed elevated levels of UA, Cr, BUN, ALT, and AST, increased activity of XOD in the liver(P<0.01), raised levels of TNF-α, IL-1β and IL-18 in the serum(P<0.01), and significantly up-regulated expression of GLUT9, URAT1, p-NF-κB p65, and NLRP3 in the renal tissue(P<0.01). Compared with the model group, acacetin reduced the UA level in a dose-dependent manner, significantly improved liver and kidney functions, decreased the XOD activity in the liver, ameliorated the pathological changes in the renal tissue, down-regulated the expression of GLUT9, URAT1, p-NF-κB p65 and NLRP3 in the renal tissue(P<0.01), and lowered the levels of TNF-α, IL-1β, and IL-18 in the serum(P<0.01). ConclusionAcacetin can ameliorate HUA by decreasing uric acid production, increasing uric acid excretion, and inhibiting the NF-κB/NLRP3 signaling pathway. Therefore, acacetin may be a potential drug for the treatment of HUA.
6.Mechanism of Yangjing Zhongyutang in Regulating SIRT1/PGC-1α Signaling Pathway to Promote Mitochondrial Function and Alleviate Oxidative Stress Damage in Rats with Diminished Ovarian Reserve
Ping ZHANG ; Lijuan YANG ; Shenghui CHEN ; Wenliang YAO ; Yuliang ZHOU ; Ling MA ; Huiying WU ; Yanwen XU ; Ziyan ZHOU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(7):46-55
ObjectiveTo observe the effects of Yangjing Zhongyutang (YJZYT) on mitochondrial biogenesis and oxidative stress damage mediated by the silent information regulator 1 (SIRT1)/peroxisome proliferator-activated receptor gamma coactivator-1alpha (PGC-1α) signaling pathway in cyclophosphamide (CTX)-induced rats with diminished ovarian reserve (DOR), and to explore its mechanism in improving ovarian reserve function and follicular development. MethodsForty-two 8-week-old female SD rats with normal estrous cycles were randomly divided into a blank control group (n=7) and a model group (n=35). Rats in the model group received a single intraperitoneal injection of CTX (90 mg·kg-1) to establish the DOR model. After modeling, estrous cycles were monitored for 7 consecutive days, and model success was confirmed based on criteria for estrous cycle disruption. After successful modeling, rats were divided into groups for intervention: estradiol valerate group (0.09 mg·kg-1), and YJZYT high-, medium-, and low-dose groups (19.98, 9.99, 5.00 g·kg-1). The blank control group and model group were given an equal volume of distilled water by gavage. All groups received daily gavage once for 4 consecutive weeks. The general state, body weight, and ovarian wet weight of rats were observed and recorded, and the ovarian organ index was calculated. Enzyme-linked immunosorbent assay (ELISA) was used to measure serum levels of follicle-stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2), anti-Müllerian hormone (AMH), superoxide dismutase (SOD), and glutathione peroxidase (GSH-Px). Hematoxylin-eosin (HE) staining was performed to observe ovarian histomorphological changes and follicular development status. Immunofluorescence was used to detect reactive oxygen species (ROS) expression levels. Colorimetric assays were employed to measure adenosine triphosphate (ATP) and malondialdehyde (MDA) content in ovarian tissues. Quantitative Real-time polymerase chain reaction (Real-time PCR) was used to detect mitochondrial DNA (mtDNA) copy number and the mRNA expression levels of key genes including SIRT1, PGC-1α, nuclear respiratory factor 1 (NRF1), and mitochondrial transcription factor A (TFAM). Western blot was performed to detect the protein expression levels of SIRT1, PGC-1α, NRF1, and TFAM. ResultsCompared with the blank group, rats in the model group exhibited disrupted estrous cycles, obviously reduced body weight, and decreased ovarian index (P<0.05). Ovarian histopathology revealed cortical thinning, loose structure, and a significant reduction in both primordial and growing follicles (P<0.01). Serum FSH and LH levels were significantly elevated (P<0.01), while E2 and AMH levels were obviously reduced (P<0.05, P<0.01). ATP content and mtDNA copy number decreased in ovarian tissue (P<0.01), ROS expression increased, MDA levels rose, while SOD and GSH-Px activities obviously decreased (P<0.05, P<0.01), mRNA and protein expression levels of SIRT1, PGC-1α, NRF1, and TFAM were obviously downregulated (P<0.05, P<0.01). After treatment, compared with the model group, body weight and ovarian index obviously recovered in rats administered various doses of YJZYT (P<0.05), serum E2 and AMH levels increased, while FSH and LH levels obviously decreased (P<0.05, P<0.01), ovarian tissue ATP content and mtDNA copy number were up-regulated, ROS and MDA levels decreased, and antioxidant enzymes SOD and GSH-Px activity obviously increased (P<0.05, P<0.01), Gene and protein expression levels related to the SIRT1/PGC-1α /NRF1/TFAM signaling pathway were obviously up-regulated compared to the model group (P<0.05, P<0.01), HE staining revealed that ovarian structure gradually recovered to integrity in all treatment groups, with a obviously increase in the number of primordial and growing follicles (P<0.05, P<0.01). Granulosa cells were neatly arranged, indicating marked improvement in ovarian function. ConclusionYJZYT may improve ovarian function and follicular development in rats with diminished ovarian reserve by activating the SIRT1/PGC-1α signaling pathway, promoting mitochondrial biogenesis, enhancing mitochondrial function, and alleviating oxidative stress damage.
7.Syndrome Element Distribution and Complication Risks in Type 2 Diabetic Patients:A Retrospective Cross-Sectional Study
Yu WEI ; Lili ZHANG ; Ling ZHOU ; Linhua ZHAO ; Qing NI ; Xiaolin TONG
Journal of Traditional Chinese Medicine 2025;66(13):1363-1368
ObjectiveTo investigate the distribution of traditional Chinese medicine (TCM) syndrome elements in type 2 diabetes mellitus (T2DM) patients based on maximum body mass index (maxBMI) and explore their association with complication risks. MethodsA retrospective cross-sectional study was used to collect clinical data from hospitalized T2DM patients, extracting age, gender, smoking history, alcohol consumption history, duration of disease, HbA1c level, complications, and TCM syndromes, and extracting the syndrome elements of disease location and disease nature based on their TCM syndromes. MaxBMI was calculated by telephone survey of patients' self-reported maximum body weight; patients with maxBMI ≥24 kg/m2 were classified into spleen-heat syndrome group, and those with maxBMI <24 kg/m2 were classified into consumptive-heat syndrome group. The distribution of TCM syndrome types and syndrome elements of patients in the two groups were analysed. Then the propensity score matching method was used to balance the baseline characteristics between the two groups and compare the differences in the distribution of syndrome types and syndrome elements and the risk of macrovascular and microvascular complications between the two groups. ResultsAmong the 1178 T2DM patients, syndrome elements in spleen-heat patients (1034 cases) were primarily located in the spleen (351 cases, 33.95%), liver (240 cases, 23.21%), and stomach (139 cases, 13.44%), while in consumptive-heat patients (144 cases), they were concentrated in the spleen (57 cases, 39.58%), liver (34 cases, 23.61%), and kidneys (17 cases, 11.81%); regarding syndrome elements of disease nature, spleen-heat patients were predominantly characterized by qi deficiency (481 cases, 46.52%), phlegm (353 cases, 22.73%), and dampness (241 cases, 23.31%), whereas consumptive-heat patients showed more qi deficiency (84 cases, 58.33%) and yin deficiency (44 cases, 30.56%). After propensity score matching, 132 cases were included in each group, and no statistically significant differences were observed in the distribution of syndrome elements of disease location between the two groups (P>0.05), but the phlegm element was significantly more prevalent in spleen-heat patients than in consumptive-heat patients (P = 0.006). Regarding the risk of complications, spleen-heat patients had a significantly higher risk of developing macrovascular complications compared to consumptive-heat patients (OR=2.04, P=0.010), while no significant differences were found between groups in the occurrence of microvascular complications (P>0.05). ConclusionThe spleen-heat T2DM patients show a more frequent syndrome element of disease nature of phlegm, and a higher risk of developing macrovascular complications compared to consumptive-heat patients.
8.Establishment of Psoriasis Rat Model with Spleen Deficiency and Dampness Obstruction Syndrome Induced by External Dampness Factors
Yating ZHANG ; Haojie SU ; Fanlu LIU ; Panyu ZHOU ; Qing WANG ; Junhong ZHANG ; Jingjing WU ; Ling HAN
Journal of Traditional Chinese Medicine 2025;66(13):1369-1377
ObjectiveTo construct a rat model of psoriasis with spleen deficiency and dampness obstruction syndrome (external dampness type), and evaluate the macroscopic manifestations and microscopic indicators of the model. MethodsTwenty-two SD rats were divided into normal group (n=3), common psoriasis group (n=5), spleen deficiency and dampness obstruction syndrome (external dampness type) group (n=7), and psoriasis with spleen deficiency and dampness obstruction syndrome (external dampness type) group (n=7). The spleen deficiency and dampness obstruction syndrome (external dampness type) rat model was established through 32-week exposure to an artificially simulated high-humidity environment, while the common psoriasis model was developed via 7-day topical application of imiquimod cream, and these two approaches were combined to construct a composite model of psoriasis with spleen deficiency and dampness obstruction syndrome (external dampness type). Rats in the normal group were housed under normal humidity conditions. The general state, tongue manifestation of rats were observed to evaluate the macroscopic syndrome manifestations; the microscopic syndrome manifestations of rats were evaluated through adipose tissue and liver tissue changes; the severity of psoriasis in rats was evaluated through skin pathological changes, psoriasis area and severity index (PASI), proliferating cell nuclear antigen (PCNA) expression and spleen tissue changes; changes in rat CD4+ interferon-γ+ cells (CD4+IFN-γ+ cells), CD4+ tumour necrosis factor-α+ cells (CD4+ TNF-α+ cells), and forkhead framing protein P3+ regulatory T cells (CD3+CD4+FoxP3+ Treg cells) were detected by flow cytometry. ResultsMacroscopically, both the spleen deficiency and dampness obstruction syndrome (external dampness type) group and psoriasis with spleen deficiency and dampness obstruction syndrome (external dampness type) group exhibited manifestations of spleen deficiency and dampness obstruction, including lethargy, huddling behavior, dull and disheveled fur, as well as soft or loose stools and perianal soiling in some individuals; both these two groups displayed enlarged tongue, swollen, and moist tongue texture, accompanied by slippery tongue surface. Microscopically, compared to the common psoriasis group, the psoriasis with spleen deficiency and dampness obstruction syndrome (external dampness type) group showed increased epididymal fat index (P<0.05); compared to the normal group and spleen deficiency and dampness obstruction syndrome (external dampness type) group, the psoriasis with spleen deficiency and dampness obstruction syndrome (external dampness type) group demonstrated significantly elevated spleen mass (P<0.05), while hepatic gross morphology and HE staining revealed no significant histopathological changes across all groups. Dorsal skin lesions were markedly exacerbated in the psoriasis with spleen deficiency and dampness obstruction syndrome (external dampness type) group when compared to those in common psoriasis group. Both the common psoriasis group and psoriasis with spleen deficiency and dampness obstruction syndrome (external dampness type) group exhibited significantly higher erythema scores, scaling scores, infiltration scores, PASI total scores, and proportions of CD3+CD4+FoxP3+Treg cells compared to the normal group and spleen deficiency and dampness obstruction syndrome (external dampness type) group (P<0.05), with pronounced PCNA-positive expression observed in the epidermal basal layer and dermis; the psoriasis with spleen deficiency and dampness obstruction syndrome (external dampness type) group displayed significantly increased proportions of CD4+TNF-α+cells compared to the spleen deficiency and dampness obstruction syndrome (external dampness type) group (P<0.05); whereas no significant differences were detected in CD4+IFN-γ+cell proportions among groups (P>0.05). ConclusionThe rat model of psoriasis with spleen deficiency and dampness obstruction syndrome (external dampness type) can be successfully constructed by artificially simulating a high-humidity environment combined with imiquimod induction.
9.Effects of di(2-ethylhexyl) phthalate on glucose homeostasis in rats due to impaired autophagy flux of islet β cells mediated by oxidative stress
Hongyang ZHOU ; Yuting HU ; Xue CHEN ; Yunqiang ZHOU ; Liping LI ; Ling LI ; Herong LIU
Journal of Environmental and Occupational Medicine 2025;42(6):674-683
Background Di(2-ethylhexyl) phthalate (DEHP) is the most prevalent environmental endocrine disruptor among phthalate acid esters (PAEs) worldwide. Previous studies have indicated that exposure to DEHP may disrupt glucose metabolism. Objective To investigate the impact of DEHP on glucose homeostasis in rats, focusing on oxidative stress-induced impairment of autophagy in islet β cells. Methods Forty male SD rats were randomly assigned to four groups, receiving DEHP doses of 0, 187, 375, and 750 mg·kg−1 for 12 weeks. Oral glucose tolerance (OGTT) and insulin tolerance tests (ITT) were conducted 24 h after the final exposure. Pancreatic microstructural alterations were assessed using hematoxylin and eosin (HE) staining and transmission electron microscopy (TEM). Commercial ELISA kits were employed to quantify the levels of insulin, adenosine triphosphate (ATP), and adenosine monophosphate (AMP) in rat serum, as well as the protein expression level of activated caspase-3 in pancreatic tissue. Additionally, commercial microplate kits were utilized to measure the concentration of reduced glutathione (GSH) in serum, the activity of superoxide dismutase (SOD) using water-soluble tetrazolium salt-1, the content of malondialdehyde (MDA) by thiobarbituric acid method, and the level of reactive oxygen species (ROS) in pancreatic tissue by chemical fluorescence method. Reverse transcription polymerase chain reaction (RT-PCR) was used to measure sequestosome1 (SQSTM1/p62), Beclin1, microtubule-associated protein 1 light chain 3 (LC3), and cysteinyl aspartate specific proteinase-8 (Caspase-8) mRNA levels. Western blot analysis was applied to detect the protein relative expression levels of p62, Beclin-1, LC3-I, LC3 II, AMPK, p-AMPK, mTOR, p-mTOR, ULK1, and Caspase-8. Results Compared to the 0 mg·kg−1 DEHP group, the 750 mg·kg−1 DEHP group exhibited a significant increase in fasting blood glucose levels at 2, 4, 6, and 12 weeks (P<0.05). The OGTT showed that, following high-glucose gavage, the 187 mg·kg−1 DEHP group had elevated blood glucose at 30 min (P<0.05), the 375 mg·kg−1 DEHP group showed increased glucose levels at 15, 30, and 180 min (P<0.05), and the 750 mg·kg−1 DEHP group exhibited elevated levels at 15, 30, 60, and 180 min (P<0.05). The 375 and 750 mg·kg−1 DEHP groups demonstrated significantly increased OGTT area under the curve (AUC) values (P<0.05). In contrast, ITT results indicated no significant differences in blood glucose levels or AUC among the DEHP exposure groups at all time points (P>0.05). Compared to the 0 mg·kg−1 DEHP group, the 750 mg·kg−1 DEHP group exhibited significantly higher HOMA-IR levels and markedly lower HOMA-ISI values (P<0.05). HE and TEM showed that in each DEHP exposure group, the number of islet cells decreased, the islet area reduced, and chromatin condensation occurred. The endocrine granules in the cytoplasm of islet β cells decreased, and there were varying degrees of widening of the nuclear membrane gap, flattening and expansion of the Golgi complex, and expansion of the endoplasmic reticulum. Ribosome separation was observed, and autophagosomes were visible. In the 375 and 750 mg·kg−1 DEHP groups, the mitochondria were deformed to varying degrees, and some cristae structures disappeared, presenting vacuolization. Moreover, the chromatin condensation in the nuclei was more severe in the 750 mg·kg−1 DEHP group. The serum SOD activity was significantly elevated in the 750 mg·kg−1 DEHP group (P<0.05). Both the 375 mg·kg−1 and 750 mg·kg−1 DEHP groups exhibited a significant increase in the relative ROS content in pancreatic tissue (P<0.05). In DEHP-treated groups, the MDA content increased (P<0.05), while the GSH content decreased (P<0.05). Additionally, in the 750 mg·kg−1 DEHP group, the AMP/ATP ratio in serum was significantly raised (P<0.05), and the expression of cleaved Caspase-3 protein in pancreatic tissue was also significantly increased (P<0.05). The relative mRNA levels of p62, Beclin-1, LC3, and Caspase-8 in the pancreatic tissue of rats exposed to DEHP were significantly elevated (P<0.05). The relative expression levels of p-AMPK/AMPK, p-ULK1/ULK1, and Beclin-1 proteins in the DEHP-treated groups were significantly increased (P<0.05). In the 375 mg·kg−1 and 750 mg·kg−1 DEHP treatment groups, the relative expression levels of p62, LC3 II/LC1, and Caspase-8 proteins were significantly increased (P<0.05), while the relative expression level of p-mTOR/mTOR was significantly decreased (P<0.05). Conclusion DEHP can disrupt glucose homeostasis by inducing oxidative stress, which subsequently activates autophagy via the ROS/AMPK/ULK1 pathway, impairing autophagic flux and promoting apoptosis of islet β cells, ultimately decreasing their function and number.
10.Changes in the levels of miR-34a and miR-29b in lens epithelial cells of patients with age-related cataract and their clinical significance
Ling ZHENG ; Haibo JIANG ; Mengru LI ; Bo ZHOU
International Eye Science 2025;25(10):1704-1707
AIM: To investigate the changes of microRNA-34a(miR-34a)and microRNA-29b(miR-29b)levels in lens epithelial cells of age-related cataracts(ARC)patients and their clinical significance.METHODS: A total of 65 ARC patients(study group)and 53 cases of clear lens anterior capsulorhexis(control group)who visited our hospital from February 2023 to February 2024 were gathered. Pearson was applied to test the correlation between miR-34a and miR-29b. Multifactor Logistic regression was applied to determine the factors affecting the occurrence of ARC.RESULTS: Compared with the control group, the expression levels of miR-34a and miR-29b in lens epithelial cells of the research group showed a significant decrease trend(all P<0.05). There was a positive correlation between miR-34a and miR-29b in the lens epithelial cells of ARC patients(r=0.472, P<0.05). MiR-34a and miR-29b were influence factors for ARC(all P<0.05).CONCLUSION: The levels of miR-34a and miR-29b in lens epithelial cells of ARC patients are significantly reduced, which is associated with the occurrence of ARC.


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