1.Epidemiological characteristics and influencing factors of severe fever with thrombocytopenia syndrome in Zhejiang Province
LÜ ; Jing ; XU Xinying ; QIAO Yingyi ; SHI Xinglong ; YUE Fang ; LIU Ying ; CHENG Chuanlong ; ZHANG Yuqi ; SUN Jimin ; LI Xiujun
Journal of Preventive Medicine 2026;38(1):10-14
Objective:
To analyze the epidemiological characteristics and influencing factors of severe fever with thrombocytopenia syndrome (SFTS) in Zhejiang Province from 2019 to 2023, so as to provide the reference for strengthening SFTS prevention and control.
Methods:
Data on laboratory-confirmed SFTS cases in Zhejiang Province from 2019 to 2023 were collected through the Infectious Disease Reporting Information System of Chinese Disease Prevention and Control Information System. Meteorological data, geographic environment and socioeconomic factors during the same period were collected from the fifth-generation European Centre for Medium-Range Weather Forecasts, Geospatial Data Cloud, and Zhejiang Statistical Yearbook, respectively. Descriptive epidemiological methods were used to analyze the epidemiological characteristics of SFTS from 2019 to 2023, and a Bayesian spatio-temporal model was constructed to analyze the influencing factors of SFTS incidence.
Results:
A total of 578 SFTS cases were reported in Zhejiang Province from 2019 to 2023, with an annual average incidence of 0.23/105. The peak period was from May to July, accounting for 52.60%. There were 309 males and 269 females, with a male-to-female ratio of 1.15∶1. The cases were mainly aged 50-<80 years, farmers, and in rural areas, accounting for 82.53%, 77.34%, and 75.43%, respectively. Taizhou City and Shaoxing City reported more SFTS cases, while Shaoxing City and Zhoushan City had higher annual average incidences of SFTS. The Bayesian spatio-temporal interaction model showed good goodness of fit. The results showed that mean temperature (RR=1.626, 95%CI: 1.111-2.378) and mean wind speed (RR=1.814, 95%CI: 1.321-2.492) were positively correlated with SFTS risk, while altitude (RR=0.432, 95%CI: 0.230-0.829) and population density (RR=0.443, 95%CI: 0.207-0.964) were negatively correlated with SFTS risk.
Conclusions
SFTS in Zhejiang Province peaks from May to July. Middle-aged and elderly people and farmers are high-risk populations. Taizhou City, Shaoxing City, and Zhoushan City are high-incidence areas. Mean temperature, mean wind speed, altitude, and population density can all affect the risk of SFTS incidence.
2.Proteomic Analysis of Danlou Tablet in Improving Platelet Function for Treating Coronary Heart Disease with Phlegm-stasis Intermingling Syndrome in Minipigs
Ziyan WANG ; Ying LI ; Aoao WANG ; Hongxu MENG ; Yue SHI ; Yanlei MA ; Guoyuan ZHANG ; Lei LI ; Jianxun LIU
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):41-53
ObjectiveThis paper aims to observe the role of Danlou tablet in treating coronary heart disease (CHD) with phlegm-stasis intermingling syndrome in minipigs by improving platelet function and explore the potential pharmacological mechanism of Danlou tablet in regulating platelet function by using proteomics technology. MethodsThirty Bama minipigs were randomly divided into a normal control group (6 pigs) and a high-fat diet group (24 pigs). After 2 weeks of high-fat diet feeding, the high-fat diet group was randomly subdivided into a model group, an atorvastatin group (1 mg·kg-1), and Danlou tablet groups (0.6 g·kg-1 and 0.3 g·kg-1). All groups continued to receive a high-fat diet for 8 weeks after the procedure. The normal control group was given a regular diet, underwent only coronary angiography, and did not receive an interventional injury procedure. The model group and each administration group were fed a high-fat diet. Two weeks later, they underwent a coronary angiography injury procedure. After the procedure, drugs were mixed into the feed every morning for 8 consecutive weeks, with the minipigs maintained on a continuous high-fat diet during this period. Quantitative proteomics technology was further used to study platelet proteins, and differential proteins were obtained by screening. Bioinformatics analysis was performed to analyze key regulatory proteins and biological pathways involved in the therapeutic effect of Danlou tablet on CHD with phlegm-stasis intermingling syndrome. ResultsCompared with the normal control group, the model group showed a significant increase in total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C) of minipigs' serum (P<0.01), a significant shortening in prothrombin time of (PT) (P<0.01), a coagulation function index, and an increase in whole blood viscosity (P<0.01) and platelet aggregation rate (P<0.01). Moreover, the platelet morphology was altered, and the contents of endothelin-1 (ET-1) and nitric oxide (NO) were significantly increased (P<0.01). Hemodynamic parameters were obviously abnormal, including significantly decreased systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), left ventricular systolic pressure (LVSP), and left ventricular maximal positive dp/dt (LV+dp/dtmax) (P<0.01). Left ventricular maximal negative dp/dt (LV-dp/dtmax) was significantly increased (P<0.01). Besides, there were myocardial cell hypertrophy, obvious edematous degeneration, massive interstitial inflammatory cell infiltration, high degree of fibrosis, and coronary endothelial atherosclerosis. TC and TG levels in minipigs' serum were significantly reduced in Danlou tablet groups with 0.6 g·kg-1 and 0.3 g·kg-1 (P<0.05, P<0.01), compared with those in the model group. LDL-C was decreased in the Danlou tablet group with 0.6 g·kg-1 (P<0.05). The whole blood viscosity under low and high shear conditions was significantly reduced in the Danlou tablet group with 0.6 g·kg-1 (P<0.05). In groups with all doses of Danlou tablet, maximum aggregation rate (MAR) and average aggregation rate (AAR) were significantly decreased (P<0.05, P<0.01), and platelets' morphological changes such as pseudopodia extension were reduced. ET-1 levels in the serum were significantly reduced. In the Danlou tablet group with 0.6 g·kg-1, NO level in the serum was reduced (P<0.05). In groups with all doses of Danlou tablet, DBP and MAP were significantly increased (P<0.05). In the Danlou tablet group with 0.6 g·kg-1, LVSP and LV+dp/dtmax were significantly increased (P<0.05, P<0.01), and LV-dp/dtmax was significantly decreased (P<0.05). In groups with all doses of Danlou tablet, edematous degeneration in myocardial tissue was milder, and coronary artery lesion degree was significantly alleviated. Compared with the normal control group, there were 94 differentially expressed proteins in the model group, including 81 up-regulated and 13 down-regulated proteins. Compared with the model group, the Danlou tablet group with 0.6 g·kg-1 showed 174 differentially expressed proteins, including 100 up-regulated and 74 down-regulated proteins. A total of 30 proteins were reversed after Danlou tablet intervention. Bioinformatics analysis revealed that its pharmacological mechanism may exert anti-platelet activation, aggregation, and adhesion effects through biological pathways such as regulation of actin cytoskeleton, platelet activation pathway, Fcγ receptor-mediated phagocytosis, as well as proteins such as growth factor receptor-bound protein 2 (GRB2), Ras-related C3 botulinum toxin substrate 2 (RAC2), RAC1, and heat shock protein 90 alpha family class A member 1 (HSP90AA1). ConclusionDanlou tablet can effectively reduce platelet activation and aggregation, exerting a good therapeutic effect on CHD with phlegm-stasis intermingling syndrome in minipigs. Its pharmacological mechanism may involve regulating biological pathways such as actin cytoskeleton and platelet activation pathway, as well as proteins like GRB2, RAC2, RAC1, and HSP90AA1, thereby exerting a pharmacological effect in anti-platelet activation, aggregation, and adhesion.
3.Exploring Biological Characteristics of Rat Model of Atrial Fibrillation with Phlegm-heat and Blood Stasis Pattern Based on Metabolomics
Ailin HOU ; Yuxuan LIU ; Wenxi YU ; Xing JI ; Chan WU ; Dazhuo SHI ; Ying ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):245-255
ObjectiveTo establish an animal model of atrial fibrillation(AF) that accurately reflects the phlegm-heat and blood stasis(TRYZ) pathogenesis in traditional Chinese medicine. MethodsForty SPF-grade SD rats were randomly assigned using a random number table to the following groups:the control group, the TRYZ+AF group,the AF group and the TRYZ group, with ten rats in each group. The TRYZ+AF and TRYZ groups underwent a high-fat diet combined with intraperitoneal lipopolysaccharide(LPS) injection to simulate the pathological alterations of TRYZ syndrome. Groups TRYZ+AF and AF were induced with acetylcholine-calcium chloride(Ach-CaCl2) via caudal vein injection to induce AF. The control group received no intervention and was maintained under normal conditions. The modeling period lasted 3 weeks. Electrocardiography was used to assess AF episodes and duration, echocardiography evaluated left atrial dimensions and cardiac function, fully automated biochemical analyzer measured the levels of total cholesterol(TC), triglycerides(TG), high-density lipoprotein cholesterol(HDL-C) and low-density lipoprotein cholesterol(LDL-C), hemoreometer analyzed the whole blood viscosity, plasma viscosity, and whole blood reduced viscosity, a coagulation analyzer assessed prothrombin time(PT), activated partial thromboplastin time(APTT), thrombin time(TT), and fibrinogen(FIB), enzyme-linked immunosorbent assay(ELISA) was used to determine the levels of C-reactive protein(CRP), interleukin(IL)-1β, IL-6, IL-17, tumour necrosis factor(TNF)-α, matrix metalloproteinase-9(MMP-9), galectin-3(Gal-3), Collagen Ⅰ, and α-smooth muscle actin(α-SMA). Hematoxylin-eosin(HE) staining and Masson's trichrome staining were used to analyze pathological changes in atrial myocardium, Western blot was employed to detect MMP-9, Collagen Ⅰ and α-SMA protein expression in myocardial tissue, real-time quantitative polymerase chain reaction(Real-time PCR) evaluated fibrous factor gene expression levels. Changes in the TRYZ syndrome were assessed via body weight, tongue color[red(R), green(G), and blue(B)], and rectal temperature. Ultra-performance liquid chromatography-quadrupole-time-of-flight mass spectrometry(UPLC-Q-TOF-MS) was employed to detect differential metabolites between the control group and the TRYZ+AF group. ResultsFollowing three weeks of sustained modeling, compared with the control group, rats in the TRYZ+AF and the TRYZ groups exhibited reduced body weight, dry faeces, elevated rectal temperature, dark red tongue, decreased RGB values on the tongue surface, and markedly elevated TC and LDL-C levels(P<0.05, P<0.01). The TRYZ+AF, TRYZ, and AF groups exhibited significantly decreased TT, APTT and PT, along with markedly elevated whole blood viscosity and FIB(P<0.05, P<0.01). Rats in the TRYZ+AF and AF groups exhibited AF rhythm, markedly decreased heart rate, prolonged RR intervals, enlarged left atrium, and significantly reduced ejection fraction and shortening fraction(P<0.05, P<0.01). Serum levels of CRP, IL-1β, IL-6, IL-17, TNF-α, MMP-9, Gal-3, Collagen Ⅰ, and α-SMA were elevated in rats from the TRYZ+AF, TRYZ, and AF groups compared to the control group, with the most pronounced increase observed in the TRYZ+AF group(P<0.05, P<0.01). Histopathology revealed that the collagen fiber deposition in the atrial of rats in the TRYZ+AF, TRYZ and AF groups was higher than that in the control group(P<0.05, P<0.01). Western blot and Real-time PCR results further demonstrated that the protein and mRNA expression levels of MMP-9, Collagen Ⅰ and α-SMA in the myocardial tissue of the TRYZ+AF group were higher than those in the other three groups(P<0.05, P<0.01). Metabolomic analysis revealed 173 differentially expressed metabolites in the TRYZ+AF group and the control group, primarily enriched in pathways such as glycerophospholipid metabolism and glycolysis/gluconeogenesis. ConclusionThis study successfully establishes a rat model of AF integrated with the TRYZ syndrome, demonstrating the pathological process where the interactions of phlegm, heat and stasis jointly trigger tremor, this provides a reliable experimental tool for in-depth research into the biological basis of this disease syndrome.
4.Treatment Principles and Paradigm of Diabetic Microvascular Complications Responding Specifically to Traditional Chinese Medicine
Anzhu WANG ; Xing HANG ; Lili ZHANG ; Xiaorong ZHU ; Dantao PENG ; Ying FAN ; Min ZHANG ; Wenliang LYU ; Guoliang ZHANG ; Xiai WU ; Jia MI ; Jiaxing TIAN ; Wei ZHANG ; Han WANG ; Yuan XU ; .LI PINGPING ; Zhenyu WANG ; Ying ZHANG ; Dongmei SUN ; Yi HE ; Mei MO ; Xiaoxiao ZHANG ; Linhua ZHAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):272-279
To explore the advantages of traditional Chinese medicine (TCM) and integrative TCM-Western medicine approaches in the treatment of diabetic microvascular complications (DMC), refine key pathophysiological insights and treatment principles, and promote academic innovation and strategic research planning in the prevention and treatment of DMC. The 38th session of the Expert Salon on Diseases Responding Specifically to Traditional Chinese Medicine, hosted by the China Association of Chinese Medicine, was held in Beijing, 2024. Experts in TCM, Western medicine, and interdisciplinary fields convened to conduct a systematic discussion on the pathogenesis, diagnostic and treatment challenges, and mechanism research related to DMC, ultimately forming a consensus on key directions. Four major research recommendations were proposed. The first is addressing clinical bottlenecks in the prevention and control of DMC by optimizing TCM-based evidence evaluation systems. The second is refining TCM core pathogenesis across DMC stages and establishing corresponding "disease-pattern-time" framework. The third is innovating mechanism research strategies to facilitate a shift from holistic regulation to targeted intervention in TCM. The fourth is advancing interdisciplinary collaboration to enhance the role of TCM in new drug development, research prioritization, and guideline formulation. TCM and integrative approaches offer distinct advantages in managing DMC. With a focus on the diseases responding specifically to TCM, strengthening evidence-based support and mechanism interpretation and promoting the integration of clinical care and research innovation will provide strong momentum for the modernization of TCM and the advancement of national health strategies.
5.Empirical study of input, output, outcome and impact of community-based rehabilitation stations
Xiayao CHEN ; Ying DONG ; Xue DONG ; Zhongxiang MI ; Jun CHENG ; Aimin ZHANG ; Didi LU ; Jun WANG ; Jude LIU ; Qianmo AN ; Hui GUO ; Xiaochen LIU ; Zefeng YU
Chinese Journal of Rehabilitation Theory and Practice 2026;32(1):83-89
ObjectiveTo investigate the present situation of input, output, outcome and impact of all registered community-based rehabilitation stations in Inner Mongolia in China, and analyze how the input predict the output, outcome and impact. MethodsFrom March 1st to April 30th, 2025, a questionnaire survey was conducted on all registered community-based rehabilitation stations in Inner Mongolia, covering four dimensions: input, output, outcome and impact. A total of 1 365 questionnaires were distributed. The input included four items: laws and policies, human resources, equipment and facilities, and rehabilitation information management. The output included two items: technical paths and benefits/effectiveness. The outcome included three items: coverage rates, rehabilitation interventions and functional results. The impact included two items: health and sustainability. Each item contained several questions, all of which were described in a positive way. Each question was scored from one to five. A lower score indicated that the situation of the community-based rehabilitation station was more in line with the content described in the question. Regression analysis was performed using the total score of each item of input dimension as independent variables, and the total scores of the output, outcome and impact dimensions as dependent variables. ResultsA total of 1 262 valid questionnaires were collected. The mean values of input, output, outcome and impact of community-based rehabilitation stations were 1.827 to 1.904, with coefficient of variation of 45.892% to 49.239%. The regression analysis showed that, rehabilitation information management, human resources, and laws and policies significantly predicted the output dimension (R² = 0.910, P < 0.001). Meanwhile, all four items in the input dimension predicted both the outcome (R² = 0.850, P < 0.001) and impact dimensions (R² = 0.833, P < 0.001). ConclusionInput, output, outcome and impact of the community-based rehabilitation stations in Inner Mongolia were generally in line with the content of the questions, although some imbalances were observed. Additionally, the input of community-based rehabilitation stations could significantly predict their output, outcome and impact.
6.Exploring Multi-target Effect of Erzhiwan on Improving Myocardial Injury in Ovariectomized Mice Based on Non-targeted Metabolomics
Ying YANG ; Jing HU ; Pei LI ; Ruyuan ZHU ; Zhiguo ZHANG ; Haixia LIU ; Yanjing CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(1):74-84
ObjectiveTo explore the target of Erzhiwan in reducing myocardial injury in ovariectomized mice through non-targeted myocardial metabolomics combined with experimental verification. MethodsOvariectomized mouse model was selected, 40 female C57BL/6 mice were randomly divided into sham operation group, model group, estrogen group(estradiol valerate, 1.3×10-4 g·kg-1), Erzhiwan low and high dose groups(3.12, 9.36 g·kg-1), with 8 mice in each group. Each administration group was given the corresponding dose of Erzhiwan by gavage, and the sham operation group and model group were given equal volume of distilled water by gavage for 12 weeks. Echocardiography was used to detect cardiac function, hematoxylin-eosin(HE) staining was used to observe myocardial morphological changes, and enzyme-linked immunosorbent assay(ELISA) was used to detect the levels of estrogen, N-terminal pro-brain natriuretic peptide(NT-proBNP), hypersensitive troponin T(hs-TnT), total cholesterol(TC), triglyceride(TG), low density lipoprotein cholesterol(LDL-C), high density lipoprotein cholesterol(HDL-C), interleukin(IL)-1β, IL-18 and tumor necrosis factor-α(TNF-α). The non-targeted metabolomics of mouse myocardium were analyzed by ultra performance liquid chromatography-quadrupole-electrostatic field orbital trap high-resolution mass spectrometry(UPLC-Q-Exactive Orbitrap MS), and the differential metabolites and corresponding metabolic pathways were obtained. The mRNA expression levels of phosphatidylinositol 3-kinase(PI3K) and protein kinase B(Akt) in mouse myocardial tissues were detected by real-time fluorescence quantitative polymerase chain reaction(Real-time PCR), and the protein expression levels of PI3K, Akt, phosphorylated(p)-Akt were detected by Western blot. ResultsCompared with the sham operation group, the model group showed abnormal cardiac function, increased myocardial fiber space, cardiomyocyte atrophy, sarcoplasmic aggregation, and occasional dissolution or rupture of muscle fiber, the level of estrogen in the serum was decreased, the levels of NT-proBNP, hs-TnT, IL-1β, IL-18, TNF-α, TG, TC and LDL-C were increased, and the level of HDL-C was decreased(P<0.01). Compared with the model group, Erzhiwan could increase the level of estrogen, improve the abnormal cardiac function, reduce the pathological injury of myocardial tissue, decrease the levels of myocardial injury markers(NT-proBNP, hs-TnT) and inflammatory factors(IL-1β, IL-18, TNF-α), decrease the levels of TG, TC, LDL-C, and increased the level of HDL-C(P<0.01). The results of non-targeted myocardial metabolomics showed that 31 of the 162 differential metabolites between the model group and sham operation group were significantly adjusted after administration of Erzhiwan, which were mainly glycerol phospholipid metabolites. Pathway enrichment results showed that Erzhiwan mainly affected glycerophospholipid metabolic pathway, PI3K-Akt pathway, cyclic guanosine monophosphate(cGMP)-protein kinase G(PKG) pathway and other metabolic pathways. Compared with the sham operation group, the levels of phosphatidylcholine(PC, 11 types) and phosphatidylethanolamine(PE, 5 types) in mouse myocardial tissue of the model group were increased(P<0.05, P<0.01), and the mRNA and protein expressions of PI3K and p-Akt were decreased(P<0.05, P<0.01). Compared with the model group, the levels of PC(11 types) and PE(5 types) were decreased(P<0.05, P<0.01) in myocardial tissue of Erzhiwan group, the mRNA and protein expressions of PI3K and p-Akt were elevated(P<0.01). ConclusionErzhiwan can alleviate the pathological injury of myocardium in ovariectomized mice, improve the abnormal cardiac function, improve lipid metabolism disorder, and reduce the levels of myocardial injury markers and inflammatory factors, which involves a number of signaling and metabolic pathways in the heart, among which glycerophospholipid metabolism pathway and PI3K/Akt pathway may have key roles.
7.Expert Consensus on Clinical Diseases Responding Specifically to Traditional Chinese Medicine: Atopic Dermatitis
Junfeng LIU ; Xiumei MO ; Mei MO ; Hongyi LI ; Ying LIN ; Xiaoxiao ZHANG ; Dacan CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(1):244-252
Atopic dermatitis (AD) is a common pruritic and chronic inflammatory dermatosis in clinical practice and is one of the diseases responding specifically to traditional Chinese medicine (TCM). With the launch of biological agents and small molecule drugs and the development and implementation of guidelines of diagnosis and treatment, clinical pathways of treatment of moderate to severe AD, and consensus on the whole-process management of AD, the clinical efficacy of moderate to severe AD has been significantly improved. However, there are still many unmet clinical needs that require more effective methods to meet. In response to the Opinions of the CPC Central Committee and the State Council on Facilitating the Inheritance, Innovation, and Development of Traditional Chinese Medicine and the spirit of the National Conference on TCM, the China Association of Chinese Medicine organized more than 20 experts in TCM dermatology, Western medicine dermatology, interdisciplinary fields, and industries to discuss the difficulties and advantages of TCM in the treatment of AD. TCM treatment for AD can not only improve rash and relieve itching but also solve many concomitant syndromes. The abundant external treatment methods of TCM have advantages for different special populations and rash characteristics. The concept of treating disease before its onset in TCM is in line with the chronic disease management mode of prevention and treatment of atopic march and prevention of recurrence. In addition, TCM therapy can reduce the use of topical glucocorticoids and has good safety. Regarding the comorbidity of AD, equal emphasis on TCM and Western medicine and multidisciplinary joint treatment should be advocated to achieve maximum benefit for patients. The exchange of TCM and Western medicine has clarified the positioning and advantages of TCM intervention in AD, providing guidance for clinical and scientific research.
8.Processing History and Modern Research of Jianghuanglian: A Review
Ying LI ; Yun WANG ; Zhe JIA ; Lin YAN ; Min JIN ; Cun ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(6):275-282
Jianghuanglian is one of the representative processed products of Coptidis Rhizoma for treating cold syndrome with drugs of heat nature, and ginger is used to restrict the bitter cold of Coptidis Rhizoma, which can be traced back to Bojifang, and it is suitable for stagnation of damp-heat in middle-jiao, cold-heat mutual knots and other symptoms. Jianghuanglian retains the alkaloids, phenylpropanoids and flavonoids of Coptidis Rhizoma, and also introduces gingerol components such as 6-gingerol in ginger, which has pharmacological activities such as anti-inflammatory, antibacterial, anti-tumor, and improving gastrointestinal function. The 2020 edition of Chinese Pharmacopoeia and many local processing specifications have included the traditional processing process and quality standards of Jianghuanglian, but the specific process parameters and quality standards are incomplete, which limits the production and clinical application of this processed product. By summarizing the processing history, process research, quality evaluation, pharmacodynamic and medicinal property changes and application of Jianghuanglian in the past 20 years, there are differences in the processing methods and standards in various provinces and cities, which are mainly reflected in the preparation method, dosage, processing process and quantitative standards of ginger juice. In addition, there are also certain differences in the changes of the main components of Jianghuanglian prepared from ginger or dried ginger, as well as their efficacy and medicinal properties. The research on the processing process of Jianghuanglian plays an important role in improving its quality standards, and this review can provide a reference for improving the quality evaluation system of Jianghuanglian.
9.Mechanism of depression-related dry eye based on 5-HT/TRPV4/AQP5
Ying YANG ; Jiazhi ZHANG ; Huijie JI ; Yuanchen DING ; Weiping GAO
International Eye Science 2025;25(3):372-377
AIM:To investigate the mechanism of reduced tear secretion in depression-related dry eye rats based on 5-HT/TRPV4/AQP5.METHODS:Healthy SD male rats were established with chronic unpredictable mild stress(CUMS)method to establish a depression-induced dry eye model(n=8), and the control group was blank rats(n=8). The ELISA method was used to compare the 5-hydroxytryptamine(5-HT)in serum and hippocampal tissue of the two groups, and the HE sections of lacrimal gland and AQP5 immunohistochemistry were observed. Western blot and RT-PCR were used to detect the expression of 5-HT3R, TRPV4 and AQP5 in the lacrimal gland tissue of the two groups of rats.RESULTS:The tear secretion in the depression-induced group was significantly reduced(P=0.001), the serum and hippocampal 5-HT levels were significantly reduced(all P<0.05), the expression of AQP5 antibody in the lacrimal gland immunohistochemistry was significantly lower than that in the control group(P<0.001), the expression of 5-HT3R, TRPV4 and AQP5 in the lacrimal gland was significantly reduced(all P<0.05), and no obvious inflammatory cells were found in the lacrimal gland tissue sections.CONCLUSION:Depression-related dry eye may occur through a non-inflammatory 5-HT/TRPV4/AQP5 mechanism.
10.Mechanism of depression-related dry eye based on 5-HT/TRPV4/AQP5
Ying YANG ; Jiazhi ZHANG ; Huijie JI ; Yuanchen DING ; Weiping GAO
International Eye Science 2025;25(3):372-377
AIM:To investigate the mechanism of reduced tear secretion in depression-related dry eye rats based on 5-HT/TRPV4/AQP5.METHODS:Healthy SD male rats were established with chronic unpredictable mild stress(CUMS)method to establish a depression-induced dry eye model(n=8), and the control group was blank rats(n=8). The ELISA method was used to compare the 5-hydroxytryptamine(5-HT)in serum and hippocampal tissue of the two groups, and the HE sections of lacrimal gland and AQP5 immunohistochemistry were observed. Western blot and RT-PCR were used to detect the expression of 5-HT3R, TRPV4 and AQP5 in the lacrimal gland tissue of the two groups of rats.RESULTS:The tear secretion in the depression-induced group was significantly reduced(P=0.001), the serum and hippocampal 5-HT levels were significantly reduced(all P<0.05), the expression of AQP5 antibody in the lacrimal gland immunohistochemistry was significantly lower than that in the control group(P<0.001), the expression of 5-HT3R, TRPV4 and AQP5 in the lacrimal gland was significantly reduced(all P<0.05), and no obvious inflammatory cells were found in the lacrimal gland tissue sections.CONCLUSION:Depression-related dry eye may occur through a non-inflammatory 5-HT/TRPV4/AQP5 mechanism.


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