1.Effect of Shengui Jiangtang Formula on Glucose and Lipid Metabolism in Type 2 Diabetic db/db Mice via PI3K/Akt/FoxO1 Signaling Pathway and Underlying Mechanisms
Zairan WANG ; Yifei ZHU ; Jiahe TANG ; Lingling QIN ; Lili WU ; Tonghua LIU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(9):42-51
ObjectiveTo investigate the effects of Shengui Jiangtang Formula on insulin resistance and glucose-lipid metabolism in spontaneous type 2 diabetic db/db mice based on the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt)/forkhead box protein O1 (FoxO1) signaling pathway, and to provide theoretical foundation for its clinical application through fundamental experiments. MethodsA randomized controlled design was employed in this study. Thirty spontaneous type 2 diabetic db/db mice meeting the inclusion criteria (fasting blood glucose >7.0 mmol·L-1 and random blood glucose on a different day≥11.1 mmol·L-1) were selected as the subjects. After stratified block randomization by body weight and blood glucose levels, they were randomly assigned to a model group, a metformin group, and a Shengui Jiangtang formula group, with n=10 per group. Ten db/m mice were used as the normal group. During the 5-week intervention, general indicators (including general condition, fasting blood glucose (FBG), body weight, and food intake) were recorded weekly. An oral glucose tolerance test (OGTT) was performed at week 5. After 5 weeks, serum was collected to measure glucose-lipid metabolism parameters. Liver tissues were analyzed as follows: Histopathology was observed through hematoxylin and eosin (HE) staining, periodic acid-Schiff (PAS) staining, and Oil red O staining. The expression of proteins and genes related to the PI3K/Akt/FoxO1 signaling pathway was quantitatively analyzed using Western blotting (Western blot) and real-time quantitative polymerase chain reaction (Real-time PCR). ResultsGeneral observations: The mice in the normal group were generally healthy, exhibited agile responses and had smooth and glossy fur. Compared with the normal group, the mice in the model group displayed typical symptoms of polydipsia, polyphagia, and polyuria, along with listlessness and rough fur. Their food intake, initial body weight, liver weight, and liver index were all significantly higher than those in the normal group (P<0.01). After 5 weeks of drug intervention, neither the Shengui Jiangtang Formula group nor the metformin group significantly affected the food intake of the model mice. Compared with the model group, no statistically significant difference was observed in liver weight or liver index in the Shengui Jiangtang formula group. Serum biochemical indicators: Compared with the normal group, the model group showed significantly elevated levels of FBG, fasting insulin, homeostatic model assessment of insulin resistance (HOMA-IR), glycosylated serum protein, and blood lipids. After drug intervention, compared with the model group, the Shengui Jiangtang formula group significantly reduced FBG in the model mice (P<0.01). The blood glucose levels at all time points during the OGTT in the Shengui Jiangtang Formula group were lower than those in the model group, with statistically significant differences in the 0 min blood glucose and the area under the curve for glucose compared to the model group (P<0.05). Furthermore, the formula significantly reduced fasting insulin levels, HOMA-IR, and glycosylated serum protein levels (P<0.05). It also showed a tendency to decrease blood lipids, liver enzymes (aspartate aminotransferase, alanine aminotransferase), and blood urea nitrogen levels, and a tendency to increase creatinine levels, although these differences were not statistically significant. Liver histomorphology: HE staining indicated that Shengui Jiangtang formula improved the morphological structure of hepatocytes and attenuated steatosis in diabetic mice. Liver PAS staining showed that it increased hepatic glycogen content and promoted hepatic glycogen synthesis in diabetic mice. Oil red O staining demonstrated that it reduced lipid deposition within hepatocytes. Western blot: Compared with the normal group, the model group showed decreased protein expression of PI3K, Akt, p-Akt, and p-FoxO1, and increased FoxO1 protein expression. Compared with the model group, both the metformin and Shengui Jiangtang Formula groups showed increased protein expression of PI3K, Akt, p-Akt, and p-FoxO1, and decreased FoxO1 protein expression. Real-time PCR: Compared with the normal group, the mRNA expression of PI3K and Akt was downregulated (P<0.05), and the mRNA expression of FoxO1 was downregulated (P<0.05) in the model group. ConclusionShengui Jiangtang Formula can improve insulin resistance and glucose-lipid metabolic disorders in db/db mice. It alleviates hepatic steatosis, promotes hepatic glycogen synthesis, and reduces lipid deposition in these mice. The mechanism by which Shengui Jiangtang Formula improves insulin resistance may be associated with the PI3K/Akt/FoxO1 signaling pathway.
2.Research Progress of Traditional Chinese Medicine in Improving Diabetic Retinopathy Based on Nrf2 Signaling Pathway
Xueqing LIU ; Xinyu ZHONG ; Tingting WANG ; Ning WANG ; Man LIU ; Li WU ; Lili WU ; Lingling QIN ; Tonghua LIU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(9):69-78
Diabetic retinopathy (DR) is a microvascular complication of diabetes and one of its most common complications. Prolonged hyperglycemia induces oxidative stress, inflammatory responses, apoptosis, and pathological angiogenesis, ultimately disrupting the blood-retinal barrier(BRB) and leading to visual impairment or even blindness. Recent studies show that the nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway plays an important role in the development of DR's pathological changes. Meanwhile, Chinese herbal monomers have been shown to modulate the Nrf2 signaling pathway, thereby intervening in the development of DR. In terms of inhibiting oxidative stress, saponin compounds such as platycodin-D and ginsenoside Rb1 downregulate the expression of malondialdehyde (MDA), thereby ameliorating retinal oxidative stress. Flavonoids such as total flavonoids from Pueraria lobata flower and puerarin upregulate the expression of superoxide dismutase (SOD) and glutathione peroxidase (GPx), effectively clearing lipid peroxides. Regarding the suppression of inflammation, phenolic compounds like resveratrol and chlorogenic acid inhibit the nuclear factor kappa B (NF-κB) pathway, reducing the release of tumor necrosis factor-alpha (TNF-α) and mitigating inflammatory responses. In the context of inhibiting apoptosis, polysaccharides such as Polygonatum sibiricum polysaccharide and Angelica sinensis polysaccharide downregulate the expression of the pro-apoptotic protein Bcl-2-associated X protein (Bax) and suppress the activity of the executioner Caspase-3, thereby reducing the apoptosis rate. As for the inhibition of neovascularization, compounds including bilobalide and physcion significantly decrease the protein expression of vascular endothelial growth factor (VEGF), leading to a reduction in retinal pathological angiogenesis. Furthermore, Chinese herbal compound prescriptions such as Tongluo Zhujing pills, Yiqi Huoxue Yangyin decoction, Qiming granules, and Danlou tablets can also intervene in the onset and progression of DR through the mechanisms described above. In summary, both Chinese herbal monomers and Chinese herbal compound prescriptions can modulate the Nrf2 signaling pathway to inhibit oxidative stress, alleviate inflammation, and participate in maintaining BRB integrity, suppressing retinal neovascularization, and preventing neurodegeneration, thereby delaying the progression of DR. Therefore, this paper reviews and summarizes recent studies at home and abroad on how traditional Chinese medicine (TCM) works to treat DR, and the relationship between the Nrf2 pathway and DR. It aims to provide research ideas for preventing and treating DR.
3.Pharmaceutical care for a case of severe dermal toxicity induced by durvalumab
Liulian JI ; Zhengbi QIN ; Pengcheng LIU ; Xiaowen DENG ; Lili LIU ; Lijuan YAO ; Tingting LIU ; Pingchen GU
China Pharmacy 2026;37(1):88-91
OBJECTIVE To provide references for the accurate identification and management of immune-related cutaneous adverse events (irCAEs) caused by durvalumab, and ensuring safe clinical drug use. METHODS Clinical pharmacists participated in the diagnosis and treatment process of a patient with gallbladder cancer who developed irCAEs caused by durvalumab. The clinical pharmacists systematically reviewed the patient’s past medical history and medication history, and assisted physicians in assessing the association between adverse drug reactions and administered drugs. Meanwhile, the clinical pharmacists conducted a graded assessment of the adverse reaction, proposed recommendations such as discontinuing durvalumab and adjusting the administration regimen of glucocorticoids, assisted physicians in restarting immunotherapy, and carried out medication education and other pharmaceutical care. RESULTS The occurrence of irCAEs in this patient was “highly likely” related to durvalumab and was classified as severe. The physicians adopted the clinical pharmacist’s opinion, and after symptomatic treatment, the patient’s skin symptoms improved, and discharged with medication. After the completion of glucocorticoid therapy for the patient, the physician restarted immunotherapy with tislelizumab, and no related adverse reactions occurred again in the patient. CONCLUSIONS Durvalumab can cause irCAEs such as severe skin maculopapular rash. In clinical practice, it is crucial to promptly identify and discontinue suspicious drugs, immediately implement effective symptomatic treatment measures, and actively resume immunotherapy to ensure the continuity and safety of the patient’s treatment.
4.Effect of functional pelvic floor muscle training on stress urinary incontinence in women
Ya'nan LI ; Miao YE ; Juan WU ; Cong CHEN ; Lingfang WAN ; Lili YU ; Linlin GAO ; Yi QIN ; Huafang JING
Chinese Journal of Rehabilitation Theory and Practice 2026;32(6):690-698
ObjectiveTo observe the effect of functional pelvic floor muscle training on pelvic floor muscle function, incontinence symptoms and quality of life in female patients with stress urinary incontinence (SUI). MethodsFrom February, 2024 to July, 2025, 40 female patients with SUI were recruited from Beijing Bo'ai Hospital and advertisements. They were randomly divided into control group (n = 20) and experimental group (n = 20). The control group received conventional pelvic floor muscle contraction and relaxation training, and the experimental group received functional pelvic floor muscle contraction and relaxation training, for eight weeks. The data of pelvic floor muscle strength, pelvic floor muscle surface electromyography (sEMG), 1-hour urine pad test and Incontinence Quality of Life questionnaire (I-QOL) were collected before and after training. The compliance rate was counted after training. ResultsOne case dropped down in the control group and three cases dropped down in the experimental group. After treatment, the pelvic floor muscle strength increased in both groups (|Z| > 3.317, P < 0.01), the pre-resting average value, sustained contraction average value and durable contraction average value of sEMG improved in the control group (|t| > 2.731, P < 0.05), the mass of 1-hour urine pad significantly reduced (t > 9.215, P < 0.001) and the I-QOL score significantly increased (|t| > 13.229, P < 0.001) in both groups; compared with the control group, the pelvic floor muscle strength significantly increased (Z = -2.281, P = 0.023), the mass of 1-hour urine pad significantly reduced (t = 4.215, P < 0.001), the I-QOL score significantly increased (t = -4.501, P < 0.001), and the compliance rate significantly increased (Z = -2.798, P < 0.01) in the experimental group . ConclusionFunctional pelvic floor muscle training can significantly improve pelvic floor muscle strength, incontinence symptoms and quality of life in female patients with SUI.
5.Effect of Mori Folium-Ginseng Radix et Rhizoma on Glucose and Lipid Metabolism and Mechanism in Mouse Model of Type 2 Diabetes Mellitus
Congyi LIU ; Ning WANG ; Jingjing XU ; Tingting WANG ; Na ZHENG ; Zimeng HUANG ; Lingling QIN ; Lili WU ; Tonghua LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(17):20-28
ObjectiveTo study the effect of the herb pair Mori Folium-Ginseng Radix et Rhizoma (HMG) on glucose and lipid metabolism in the mouse model of type 2 diabetes mellitus and decipher the possible treatment mechanism. MethodsThe db/db mice were chosen as the mouse model of type 2 diabetes mellitus and then treated with HMG at low and high doses (1.56, 3.12 g∙kg-1, respectively) or metformin (0.26 g∙kg-1) by gavage for 6 weeks. The normal group and the model group were treated with double distilled water at the same time according to body weight. The 8-h fasting blood glucose and body weight were measured once a week. The oral glucose tolerance test (OGTT) was conducted at the 6th week of dosing. The mice were sacrificed after the end of dosing. Serum levels of lipids [total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL), and low-density lipoprotein cholesterol (LDL)], liver function indicators [aspartate aminotransferase (AST) and alanine aminotransferase (ALT)], non-esterified fatty acids (NEFA), glycosylated serum protein (GSP), serum glucose (GLU), fasting insulin (FINS), and renal function indicators [creatinine (Crea) and blood urea nitrogen (BUN)] were measured by enzyme-linked immunosorbent assay. The protein levels of peroxidase proliferator-activating receptor gamma (PPARγ), acetyl coenzyme A carboxylase (ACC), and sterol regulatory element-binding protein-1 (SREBP-1) were determined by Western blot. The pathological changes in the liver and pancreas were examined. ResultsCompared with the normal group, the model group presented increased body weight, elevated levels of blood glucose, TG, TC, AST, ALT, GLU, NEFA, GSP, and HDL-C, up-regulated protein levels of ACC and SREBP-1, and down-regulated protein level of PPARγ (P<0.01). Meanwhile, the model group presented a large amount of lipid droplets and steatosis in the liver, as well as karyopyknosis and lymphocyte infiltration in the pancreas. Compared with the model group, the high- and low-dose HMG groups showed decreased body weight, declined levels of blood glucose, TG, TC, AST, ALT, GLU, NEFA, and GSP, and elevate level of HDL-C (P<0.05, P<0.01). Moreover, the two groups showcased reduced lipid droplets and steatosis in the liver, as well as enlarged islets with clear boundaries and alleviated lymphocyte infiltration and karyopyknosis. Western blot results showed that the high-dose herb pair group demonstrated down-regulated protein levels of ACC and SREBP-1 and up-regulated protein level of PPARγ (P<0.01). ConclusionThe HMG can effectively improve the glucose and lipid metabolism in db/db mice by regulating the expression of PPARγ, SREBP-1, and ACC.
6.Effect of Mori Folium-Ginseng Radix et Rhizoma on Glucose and Lipid Metabolism and Mechanism in Mouse Model of Type 2 Diabetes Mellitus
Congyi LIU ; Ning WANG ; Jingjing XU ; Tingting WANG ; Na ZHENG ; Zimeng HUANG ; Lingling QIN ; Lili WU ; Tonghua LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(17):20-28
ObjectiveTo study the effect of the herb pair Mori Folium-Ginseng Radix et Rhizoma (HMG) on glucose and lipid metabolism in the mouse model of type 2 diabetes mellitus and decipher the possible treatment mechanism. MethodsThe db/db mice were chosen as the mouse model of type 2 diabetes mellitus and then treated with HMG at low and high doses (1.56, 3.12 g∙kg-1, respectively) or metformin (0.26 g∙kg-1) by gavage for 6 weeks. The normal group and the model group were treated with double distilled water at the same time according to body weight. The 8-h fasting blood glucose and body weight were measured once a week. The oral glucose tolerance test (OGTT) was conducted at the 6th week of dosing. The mice were sacrificed after the end of dosing. Serum levels of lipids [total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL), and low-density lipoprotein cholesterol (LDL)], liver function indicators [aspartate aminotransferase (AST) and alanine aminotransferase (ALT)], non-esterified fatty acids (NEFA), glycosylated serum protein (GSP), serum glucose (GLU), fasting insulin (FINS), and renal function indicators [creatinine (Crea) and blood urea nitrogen (BUN)] were measured by enzyme-linked immunosorbent assay. The protein levels of peroxidase proliferator-activating receptor gamma (PPARγ), acetyl coenzyme A carboxylase (ACC), and sterol regulatory element-binding protein-1 (SREBP-1) were determined by Western blot. The pathological changes in the liver and pancreas were examined. ResultsCompared with the normal group, the model group presented increased body weight, elevated levels of blood glucose, TG, TC, AST, ALT, GLU, NEFA, GSP, and HDL-C, up-regulated protein levels of ACC and SREBP-1, and down-regulated protein level of PPARγ (P<0.01). Meanwhile, the model group presented a large amount of lipid droplets and steatosis in the liver, as well as karyopyknosis and lymphocyte infiltration in the pancreas. Compared with the model group, the high- and low-dose HMG groups showed decreased body weight, declined levels of blood glucose, TG, TC, AST, ALT, GLU, NEFA, and GSP, and elevate level of HDL-C (P<0.05, P<0.01). Moreover, the two groups showcased reduced lipid droplets and steatosis in the liver, as well as enlarged islets with clear boundaries and alleviated lymphocyte infiltration and karyopyknosis. Western blot results showed that the high-dose herb pair group demonstrated down-regulated protein levels of ACC and SREBP-1 and up-regulated protein level of PPARγ (P<0.01). ConclusionThe HMG can effectively improve the glucose and lipid metabolism in db/db mice by regulating the expression of PPARγ, SREBP-1, and ACC.
7.Antidepressant effects and mechanisms of Wuhua herbal tea in a rat model of chronic unpredictable mild stress
Zhiwei Qi ; Lingling Qin ; Ming Gao ; Ruifeng Yang ; Congyi Liu ; Ning Wang ; Wenjing Li ; Yongxin Huang ; Lili Wu ; Tonghua Liu
Journal of Traditional Chinese Medical Sciences 2025;2025(3):364-374
ObjectiveTo evaluate the effects of Wuhua herbal tea on chronic unpredictable mild stress (CUMS)-induced depression and explore its mechanism of action in combating depression.MethodsWe tested the antidepressant effects of Wuhua herbal tea in a rat model of CUMS-induced depression using fluoxetine as a positive control. The rats were divided into four groups: control group, model group, fluoxetine group, and Wuhua herbal tea group. The rats underwent body weight measurements, sucrose preference test, and open-field test. Enzyme-linked immunosorbent assay kits were used to detect the serum levels of serotonin, dopamine, adrenocorticotropic hormone (ACTH), corticosterone, norepinephrine, and interleukin-6. Intergroup comparisons and detection of brain-derived neurotrophic factor (BDNF), cAMP-response element binding protein (CREB), Janus kinase 2 (JAK2), and signal transducer and activator of transcription 3 (STAT3) mRNA expression in the hippocampus were performed using RT-PCR. Immunohistochemistry was used to identify the expression of phosphorylated JAK2 (p-JAK2) and phosphorylated STAT3 (p-STAT3) proteins in hippocampal paraffin sections of CUMS rats.ResultsCompared with the control group, the model group rats had depressive tendencies, exhibiting low vitality and interest in various behavioral indicators which were signs of despair. The Wuhua herbal tea group statistically increased the levels of serotonin and dopamine in the serum of CUMS rats to varying degrees (P = .015 and P = .002); reduced serum levels of ACTH, corticosterone, norepinephrine, and interleukin-6 (all P .05); and decreased mRNA expression of BDNF, CREB, JAK2, and STAT3 in the hippocampus (all P .05); and decreased p-STAT3 protein levels (P = .006).ConclusionWuhua herbal tea shows antidepressant potential in CUMS rats by modulating the HPA axis and inhibiting JAK2-STAT3 overactivation, alleviating neuroinflammation. It also restores BDNF-CREB pathway function, reducing depressive symptoms.
8.Elevated advanced glycation endproducts is a risk factor for stenosis after primary arteriovenous fistula surgery.
Tianhong LI ; Xinfang QIN ; Lili WEI ; Huixin BI
Journal of Southern Medical University 2025;45(8):1663-1671
OBJECTIVES:
To investigate the effect of serum advanced glycation endproducts (AGEs) on stenosis after first autologous arteriovenous fistula (AVF) in patients with end-stage renal disease (ESRD).
METHODS:
Patients with ESRD undergoing standard native arteriovenous fistula (AVF) for the first time in the Department of Nephrology, Affiliated Hospital of Guilin Medical University from February to June 2022 were prospectively enrolled. The preoperative general data, clinical examination results and ultrasound data of the operated limbs were collected. The patients with and without stenosis within 2 months after the operation were compared for preoperative serum AGEs levels detected using ELISA and the clinical parameters. Logistic regression analysis was used to analyze the independent risk factors of AVF stenosis, and the sensitivity and specificity of AGEs for predicting postoperative stenosis were analyzed using receiver-operating characteristic (ROC) curve.
RESULTS:
Of the 94 patients enrolled, 34 had postoperative arteriovenous stenosis and 60 had no stenosis. The number of diabetic patients differed significantly between stenosis group and non-stenosis group (P<0.001). Serum AGEs levels, which were negatively correlated with serum phosphorus level (P<0.05), were significantly higher in stenosis group than in non-stenosis group (Z=-2.837, P=0.005). Serum AGE level was an independent risk factor for postoperative stenosis after AVF (OR=1.251, 95% CI:1.096-1.423, P<0.001). For predicting AVF stenosis, the area under the ROC curve (AUC) of AGEs was 0.677 (P=0.007, 95% CI: 0.572-0.770), with a specificity of 90.00% and a sensitivity of 52.94% at the optimal cut-off value of 8.43 µg/mL; AGEs combined with fibrinogen had an AUC of 0.763 (P<0.001, 95% CI: 0.664-0.844), with a specificity of 73.33% and a sensitivity of 70.59% at the optimal cut-off value of 0.30.
CONCLUSIONS
Elevated serum AGEs level is an independent risk factor for postoperative AVF stenosis, and its combination with fibrinogen has a better efficacy for predicting postoperative AVF stenosis.
Humans
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Glycation End Products, Advanced/blood*
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Risk Factors
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Arteriovenous Shunt, Surgical/adverse effects*
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Kidney Failure, Chronic/blood*
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Male
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Constriction, Pathologic/etiology*
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Female
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Middle Aged
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Postoperative Complications/etiology*
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Renal Dialysis
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Aged
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Prospective Studies
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ROC Curve
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Adult
9.Combination of Astragalus-Salvia and Ophiopogon-Dendrobium herb pairs alleviates Sjögren's Syndrome via inhibiting the JAK1/STAT3 and PI3K/AKT pathways in NOD/Ltj mice.
Peng SUN ; Lili ZHU ; Yang YU ; Sijing HU ; Mengyi SHAN ; Xuan ZHAO ; Xinchang WANG ; Qiaoyan ZHANG ; Luping QIN
Chinese Journal of Natural Medicines (English Ed.) 2025;23(6):733-741
Sjögren's syndrome (SS) is an autoimmune disease characterized primarily by oral and periocular dryness. Astragalus-Salvia (AS) and Ophiopogon-Dendrobium (OD) represent two frequently utilized herb pairs in SS treatment. While the combination of AS-OD herb pairs demonstrates clinical efficacy in alleviating SS symptoms, its underlying mechanism remains unclear. This investigation sought to assess the therapeutic effects and elucidate the potential mechanisms of AS-OD in non-obese diabetic (NOD)/Ltj mice with SS. The study utilized NOD/Ltj mice as SS models, administering AS-OD treatment for 10 weeks at doses of 113.1, 226.2, and 339.3 mg·d-1·20 g-1. Results demonstrated that AS-OD improved SS symptoms, evidenced by enhanced salivary flow rate, decreased anti-SSA/Ro and anti-SSB/La antibody levels, increased swimming duration, and reduced lactate (LA) and blood urea nitrogen (BUN) levels in NOD/Ltj mice. AS-OD reduced lymphocyte infiltration, enhanced Aquaporin-5 (AQP5) expression in the submandibular gland, decreased inflammatory cytokine levels in the submandibular gland, and reduced the T helper type 17/regulatory T lymphocyte (Th17/Treg) cell ratio in the spleen. Transcriptomic and proteomic analyses indicated AS-OD's involvement in regulating phosphatidylinositol-3-kinase/protein kinase B (PI3K/AKT) and Janus kinase 3/signal transducer and activator of transcription 3 (JAK1/STAT3) pathways, with inhibitory effects validated in both NOD/Ltj mice submandibular gland and A-253 cells. Furthermore, AS-OD enhanced cell viability and reduced A-253 cell apoptosis through the PI3K/AKT pathway. In A-253 cells, AS-OD reduced inflammatory cytokine levels, CXC chemokine ligand 9/10 (CXCL9/10), and T-cell chemotaxis by inhibiting the JAK1/STAT3 pathway. AS-OD mitigates SS by suppressing inflammation and immune responses through the PI3K/AKT and JAK1/STAT3 pathways.
Animals
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STAT3 Transcription Factor/genetics*
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Sjogren's Syndrome/immunology*
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Mice, Inbred NOD
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Proto-Oncogene Proteins c-akt/genetics*
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Phosphatidylinositol 3-Kinases/genetics*
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Mice
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Drugs, Chinese Herbal/administration & dosage*
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Signal Transduction/drug effects*
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Janus Kinase 1/genetics*
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Humans
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Female
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Astragalus Plant/chemistry*
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Male
10.Protective effect of prunetin on cerebral ischemia-reperfusion injury in rats by regulating JNK/p38 pathway
Chongyang ZHANG ; Jia LUO ; Xue QIN ; Panxi SUN ; Lili WEI ; Xiushi YU
Journal of Jilin University(Medicine Edition) 2025;51(2):296-306
Objective:To investigate the protective effect of prunetin on the neurons in the rats with cerebral ischemia reperfusion injury(CIRI),and to clarify its possible mechanisms.Methods:Thirty-six SD rats were randomly divided into sham operation group,model group,low dose of prunetin group(3.5 mg·kg-1),medium dose of prunetin group(7.0 mg·kg-1),high dose of prunetin group(14.0 mg·kg-1),and positive drug edaravone(Eda)group(n=6).Zealonga method was used to evaluate the neurological function damage of the rats in various groups;open field experiment was used to evaluate the autonomous motor function;Triphenyltetrazolium chlorde(TTC)staining was used to evaluate the areas of cerebral infarction of the rats in various groups;HE staining and Nissl staining were used to observe the pathomorphology of brain tissue of the rats in various groups.Additionally,twenty-one SD rats were randomly divided into sham operation group,model group,prunetin group,c-Jun N-terminal kinase(JNK)inhibitor group,p38 inhibitor group,JNK inhibitor+prunetin group,and p38 inhibitor+prunetin group(n=3).TUNEL staining was used to detect the positive rates of apoptosis of neurons of the rats in various groups;Western blotting method was used to detect the expression levels of apoptosis-related proteins and JNK/p38 signaling pathway-related proteins in brain tissue of cerebral infarction side of the rats in various groups.Results:Compared with sham operation group,the neurological deficit score of rats in model group was significantly increased(P<0.001),the total motor distance was shortened(P<0.001),and the ratio of cerebral infarction area was increased(P<0.001).In sham group,the neuronal structure in the rat brain tissue was clear and well-organized,with an abundance of Nissl bodies and no apparent pathological changes observed.Compared with model group,the neurological deficit scores of the rats in medium and high doses of prunetin groups were decreased(P<0.05),total motor distances of rats were increased(P<0.05),and the cerebral infarction areas of rats were decreased(P<0.05);the neurons showed disarrayed arrangement,cytoplasmic condensation,nuclear consolidation,and lysing and deletion of Nissl bodies were decreased.Compared with sham operation group,the positive rate of apoptosis of neurons in model group was significantly increased(P<0.001),the expression level of B-cell lymphoma-2(Bcl-2),Bcl-2-associated X protein(Bax)and cleaved Caspase-3 proteins in brain tissue of the rats were significantly increased(P<0.05 or P<0.01).Compared with model group,the positive rats of apoptosis of neurons of the rats in prunetin group were decreased(P<0.05),the expression level of Bcl-2 protein in brain tissue of the rats was increased(P<0.001),and the expression levels of Bax and cleaved Caspase-3 proteins were significantly decreased(P<0.05).Compared with inhibitor groups,the positive rates of apoptosis of neurons in inhibitor+prunetin groups were decreased(P<0.01),and the expression levels of p-JNK and p-p38 proteins in brain tissue of the rats as well as the ratios of p-JNK/JNK and p-p38/p38 were decreased(P<0.05).Conclusion:Prunetin has the effect of reducing the neurological function damage,decreasing the area of cerebral infarction,reducing the pathological damage,and inhibiting neuronal apoptosis in the rats,and its mechanism may be related to inhibiting neuronal apoptosis through regulating the JNK/p38 signaling pathway.


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