1.Intervention Effect of Suanzaoren Tang on Depression Model Rats Based on JNK/c-Myc/p53 Pathway
Shuailin DU ; Zhicheng HAO ; Ce ZHANG ; Jiyuan GUO ; Xusheng TIAN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(5):12-19
ObjectiveTo investigate the intervention effects of Suanzaoren Tang on depression model rats induced by isolation combined with chronic unpredictable mild stress (CUMS), and to examine its influence on the c-Jun N-terminal kinase (JNK)/proto-oncogene protein (c-Myc)/tumor suppressor protein 53 (p53) signaling pathway, thereby revealing its potential functional mechanism. MethodsA total of 72 male SD rats were randomly divided into six groups using a strict random number table: blank group, model group, fluoxetine group (3.6 mg·kg-1), and high-, medium-, and low-dose Suanzaoren Tang groups (10, 5, 2.5 g·kg-1),with 12 rats in each group. A depression model was established using isolation combined with CUMS. Fluoxetine and different doses of Suanzaoren Tang were administered continuously for 28 days. Behavioral indicators such as sucrose water consumption and open field test scores were recorded. Western blot and immunohistochemistry (IHC) were employed to analyze the expression of key proteins in the JNK/c-Myc/p53 signaling pathway, and the terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay was used to evaluate the number of apoptotic cells in the hippocampus. ResultsCompared with the blank group, the model group exhibited a significantly reduced sucrose preference index (P<0.01), a lower total score of horizontal and vertical movements in the open field test (P<0.01), significantly increased expression of JNK, c-Myc, and p53 proteins in the hippocampus (P<0.01), and a higher number of TUNEL-positive cells in the hippocampus (P<0.01). Compared with the model group, the sucrose preference index and the total score of horizontal and vertical movements in the open field test significantly increased in the high- and medium-dose Suanzaoren Tang groups and the fluoxetine group (P<0.05, P<0.01). The expression of JNK, c-Myc, and p53 proteins significantly decreased in all Suanzaoren Tang groups (high, medium, and low doses) and the fluoxetine group (P<0.05, P<0.01). The number of TUNEL-positive cells in the hippocampus also significantly decreased in these groups (P<0.01). ConclusionSuanzaoren Tang can regulate the expression of JNK/c-Myc/p53 proteins in the hippocampus of depression model rats, and its antidepressant mechanism may be related to its protective effect on hippocampal neurons.
2.Influencing factors of overactive bladder in college freshmen and the impacts on anxiety,quality of life,and social interaction
Guowei SI ; Ce GAO ; Sida SHAO ; Feng SI ; Yakai LIU ; Songyang WANG ; Maochuan FAN ; Huiqing ZHANG ; Qifeng DOU ; Jianguo WEN
Journal of Modern Urology 2025;30(6):513-519
Objective: To investigate the influencing factors of overactive bladder (OAB) in college freshmen and the impacts of OAB on their mental health, quality of life and social interaction. Methods: An epidemiological questionnaire survey was conducted in an anonymous manner on the prevalence of OAB among 5300 freshmen aged 17 to 22 years enrolled in the 2023—2024 academic year in Xinxiang Medical University and Sanquan College of Xinxiang Medical University.The questionnaire included questions on basic information, history of urinary tract infection, constipation, smoking, history of alcohol consumption, history of coffee/strong tea drinking, history of carbonated beverage drinking, redundant prepuce, phimosis, holding urine, chronic insomnia, self-rating anxiety scale (SAS), quality of life score (QoL), and social avoidance and distress scale (SADS).The influencing factors of OAB were analyzed with multivariate logistic regression analysis.The subjects were grouped according to whether they had OAB, and the differences in SAS, QoL and SADS between the OAB group and non-OAB group were compared.The impacts of OAB on the anxiety level, quality of life, and social interaction were analyzed with multiple linear regression analysis. Results: The overall prevalence rate of OAB was 4.9% (244/5018).Multivariate logistic regression analysis showed that the history of urinary tract infection (OR=0.177), constipation (OR=0.636), smoking (OR=0.582), alcohol consumption (OR=0.685), coffee/strong tea drinking (OR=0.387), carbonated beverage drinking (OR=0.631), redundant prepuce (OR=0.673), phimosis (OR=0.311), urine holding (OR=0.593), and chronic insomnia (OR=0.256) were influencing factors for the occurrence of OAB (P<0.05).The OAB group had higher SAS score [(41.18±6.54) vs. (38.61±6.36)], QoL score [(3.65±1.20) vs. (2.79±0.95)], social avoidance score [(6.25±1.86) vs. (5.86±1.51)], social distress score [(6.27±1.59) vs. (5.97±1.32)], and total SADS score [(12.51±2.35) vs. (11.84±2.01)] than the non-OAB group (P<0.05).The results of multiple linear regression analysis showed that OAB could independently affect the scores of QoL, SAS, and SADS.The OAB group had higher scores of QoL, SAS, and SADS compared with the non-OAB group (P<0.001). Conclusion: History of urinary tract infection, constipation, smoking, alcohol consumption, coffee/strong tea drinking, carbonated beverage drinking, redundant prepuce, phimosis, urine holding, and chronic insomnia are influencing factors for the occurrence of OAB in male college students.Moreover, OAB has negative impacts on their mental health, quality of life, and social interaction.
3.Renshentang Alleviates Atherosclerosis in Mice by Targeting TRPV1 to Regulate Foam Cell Cholesterol Metabolism
Yulu YUAN ; Ce CHU ; Xuguang TAO ; Zhen YANG ; Xiangyun CHEN ; Zhanzhan HE ; Yongqi XU ; Yuxin ZHANG ; Peizhang ZHAO ; Wanping CHEN ; Hongxia ZHAO ; Wenlai WANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(17):11-19
ObjectiveTo explore the effects of Renshentang on atherosclerosis (AS) in mice based on the role of transient receptor potential vanilloid1 (TRPV1) in regulating cholesterol metabolism in foam cells. MethodsNine SPF-grade 8-week-old C57BL/6J mice were set as a normal group, and 60 ApoE-/- mice were randomized into model, positive drug (simvastatin, 0.02 g·kg-1·d-1), and low-, medium-, and high-dose (1.77, 3.54, 7.08 g·kg-1·d-1, respectively) Renshentang groups (n=12) according to body weight. The normal group was fed with a normal diet, and the other groups were fed with a high-fat diet and given corresponding drugs by oral gavage for the modeling of AS. The mice were administrated with corresponding drugs once a day for 12 weeks. After the last administration and fasting for 12 h, the aorta was collected. Plaque conditions, pathological changes, levels of total cholesterol (TC), triglcerides (TG), low-density lipoprotein-cholesterol (LDL-C), and high-density lipoprotein-cholesterol (HDL-C), and the expression of TRPV1, liver X receptor (LXR), inducible degrader of the low-density lipoprotein receptor (IDOL), and low-density lipoprotein receptor (LDLR) in the aortic tissue were observed and detected by gross oil red O staining, HE staining, Western blot, immunohistochemistry, and real-time PCR. ResultsCompared with the normal group, the model group presented obvious plaque deposition in the aorta, raised levels of TC, TG, and LDL-C in the serum (P<0.01), up-regulated expression level of LDLR in the aorta (P<0.01), lowered level of HDL-C in the serum, and down-regulated expression levels of TRPV1, LXR, and IDOL in the aorta (P<0.05, P<0.01). Compared with the model group, the positive drug and Renshentang at different doses alleviated AS, elevated the levels of HDL-C, TRPV1, LXR, and IDOL (P<0.05, P<0.01), while lowering the levels of TC, TG, LDL-C, and LDLR (P<0.05, P<0.01). ConclusionRenshentang has a lipid-lowering effect on AS mice. It can effectively reduce lipid deposition, lipid levels, and plaque area of AS mice by activating TRPV1 expression and regulating the LXR/IDOL/LDLR pathway.
4.Renshentang Alleviates Atherosclerosis in Mice by Targeting TRPV1 to Regulate Foam Cell Cholesterol Metabolism
Yulu YUAN ; Ce CHU ; Xuguang TAO ; Zhen YANG ; Xiangyun CHEN ; Zhanzhan HE ; Yongqi XU ; Yuxin ZHANG ; Peizhang ZHAO ; Wanping CHEN ; Hongxia ZHAO ; Wenlai WANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(17):11-19
ObjectiveTo explore the effects of Renshentang on atherosclerosis (AS) in mice based on the role of transient receptor potential vanilloid1 (TRPV1) in regulating cholesterol metabolism in foam cells. MethodsNine SPF-grade 8-week-old C57BL/6J mice were set as a normal group, and 60 ApoE-/- mice were randomized into model, positive drug (simvastatin, 0.02 g·kg-1·d-1), and low-, medium-, and high-dose (1.77, 3.54, 7.08 g·kg-1·d-1, respectively) Renshentang groups (n=12) according to body weight. The normal group was fed with a normal diet, and the other groups were fed with a high-fat diet and given corresponding drugs by oral gavage for the modeling of AS. The mice were administrated with corresponding drugs once a day for 12 weeks. After the last administration and fasting for 12 h, the aorta was collected. Plaque conditions, pathological changes, levels of total cholesterol (TC), triglcerides (TG), low-density lipoprotein-cholesterol (LDL-C), and high-density lipoprotein-cholesterol (HDL-C), and the expression of TRPV1, liver X receptor (LXR), inducible degrader of the low-density lipoprotein receptor (IDOL), and low-density lipoprotein receptor (LDLR) in the aortic tissue were observed and detected by gross oil red O staining, HE staining, Western blot, immunohistochemistry, and real-time PCR. ResultsCompared with the normal group, the model group presented obvious plaque deposition in the aorta, raised levels of TC, TG, and LDL-C in the serum (P<0.01), up-regulated expression level of LDLR in the aorta (P<0.01), lowered level of HDL-C in the serum, and down-regulated expression levels of TRPV1, LXR, and IDOL in the aorta (P<0.05, P<0.01). Compared with the model group, the positive drug and Renshentang at different doses alleviated AS, elevated the levels of HDL-C, TRPV1, LXR, and IDOL (P<0.05, P<0.01), while lowering the levels of TC, TG, LDL-C, and LDLR (P<0.05, P<0.01). ConclusionRenshentang has a lipid-lowering effect on AS mice. It can effectively reduce lipid deposition, lipid levels, and plaque area of AS mice by activating TRPV1 expression and regulating the LXR/IDOL/LDLR pathway.
5.Effect and Mechanism of Chinese Medicine in Treatment of Osteoporosis
Yulu YUAN ; Zhen YANG ; Wei DING ; Ce CHU ; Xuguang TAO ; Xiangyun CHEN ; Zhanzhan HE ; Peizhang ZHAO ; Yongqi XU ; Yuxin ZHANG ; Hongxia ZHAO ; Wenlai WANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(4):290-298
Osteoporosis (OP) is a common bone disease affecting the quality of life and causing huge medical burden to the patients and society. The occurrence of OP is mainly caused by excessive bone resorption and insufficient bone formation, which are directly influenced by external calcium ion balance. Calcium imbalance can impair bone integrity, reduce the calcium supply to the bone, and lower the calcium content in the bone, thus triggering OP. Drugs are the main anti-OP therapy in modern medicine, which, however, may cause adverse reactions and drug dependence. Chinese medicines have good clinical effects and high safety in treating OP, being suitable for long-term use. Recent studies have shown that Chinese medicines can alleviate estrogen deficiency, regulate bone cell and calcium metabolism, which is crucial for the formation and development of OP. The transient receptor potential cation channel superfamily V members 5 and 6 (TRPV5 and TRPV6, respectively) affect bone homeostasis by mediating the transmembrane calcium ion transport in the intestine (TRPV6) and kidney (TRPV5). Therefore, TRPV5/6 is one of the key targets to understand the anti-OP mechanisms of the effective parts of Chinese medicines, which is worthy of further study. This paper summarizes the research results about the anti-OP effects of Chinese medicines in the last two decades, especially the mechanism of regulating calcium metabolism, aiming to provide new ideas for the basic research, clinical application, and drug development of OP treatment.
6.Mechanism of Zhishi Xiebai Guizhitang in Treating AS Based on Regulation of Cholesterol Metabolism in Foam Cells by TRPA1
Zhanzhan HE ; Zhen YANG ; Xuguang TAO ; Xiangyun CHEN ; Wei DING ; Ce CHU ; Yulu YUAN ; Yuxin ZHANG ; Yongqi XU ; Peizhang ZHAO ; Hongxia ZHAO ; Wenlai WANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(10):1-10
ObjectiveTo explore the effect and mechanism of Zhishi Xiebai Guizhitang on the progression of atherosclerosis (AS) mice based on the regulation of cholesterol metabolism in foam cells by transient receptor potential channel ankyrin 1 (TRPA1). MethodThe AS model was established on apolipoprotein E knockout (ApoE-/-) mice with a high-fat diet. The mice were randomly divided into low-dose, middle-dose, and high-dose groups of Zhishi Xiebai Guizhitang (2.97, 5.94, 11.88 g·kg-1) and simvastatin group (0.002 g·kg-1), and the drug was administered along with a high-fat diet. C57BL/6J mice were fed an ordinary diet as a normal group. After the above process, the aorta and serum of mice were taken. The pathological changes of the aortic root were observed by hematoxylin-eosin (HE) staining. The lipid plaques in the aorta were observed by gross oil redness. Serum levels of total cholesterol (TC), triglyceride (TG), low density lipoprotein cholesterol (LDL-C), and high density lipoprotein cholesterol (HDL-C) were detected, and the levels of interleukin-1β (IL-1β) and interleukin-18 (IL-18) were detected by enzyme-linked immunosorbent assay (ELISA). Western blot and immunohistochemical method were used to analyze the expression of TRPA1, ATP-binding cassette transporter A1 (ABCA1), ATP-binding cassette transporter G1 (ABCG1), and mannose receptor (CD206). ResultFrom the perspective of drug efficacy, compared with the normal group, pathological changes such as plaque, a large number of foam cells, and cholesterol crystals appeared in the aorta of the model group, and the serum levels of TC, LDL-C, IL-1β, and IL-18 were significantly increased (P<0.01). The HDL-C level was significantly decreased (P<0.01), and the CD206 level in aortic tissue was significantly decreased (P<0.01). Compared with the model group, the lipid deposition in the aorta was alleviated in all drug administration groups. In addition, except for the high-dose group of Zhishi Xiebai Guizhitang, all drug administration groups could significantly decrease the levels of TC and LDL-C (P<0.01). In terms of inflammation, except for the middle-dose group of Zhishi Xiebai Guizhitang, the levels of IL-1β and IL-18 were significantly decreased in all drug administration groups (P<0.05). Moreover, Zhishi Xiebai Guizhitang could also up-regulate the levels of CD206, and the difference was significant in the middle-dose and high-dose groups (P<0.05). From the perspective of mechanism, the expression levels of TRPA1, ABCA1, and ABCG1 in the aorta in the model group were lower than those in the normal group (P<0.05). Compared with the model group, all drug administration groups significantly increased the expression of TRPA1 in the aorta (P<0.05), and the expressions of ABCA1 and ABCG1 were increased. The differences in the middle-dose and high-dose groups and the simvastatin group were significant (P<0.05), which was basically consistent with the trend of immunohistochemical results. ConclusionZhishi Xiebai Guizhitang can effectively reduce blood lipid and inflammation levels and inhibit the formation of aortic plaque. The mechanism may be explained as follows: the expressions of ABCA1 and ABCG1 downstream are increased through TRPA1, which promotes cholesterol outflow in foam cells, thereby regulating cholesterol metabolism, intervening in inflammation level to a certain extent, and finally treating AS.
7.Analysis of the Role of Pepsin in Vocal Cord Polyp and Vocal Cord Cancer
Jingyu GAO ; Renjing LUO ; Biao RUAN ; Chaowu JIANG ; Zhuohui LIU ; Ruiqing LONG ; Qiulin LIANG ; Ce ZHANG ; Lu SU ; Peng LI
Journal of Audiology and Speech Pathology 2024;32(1):21-24
Objective To investigate the expression of pepsin in vocal cord polyps and vocal cord cancer,and to compare the difference of pepsin expression.Methods From May 2020 to December 2021,27 patients with vocal cord polyp,27 patients with vocal cord cancer and 23 healthy volunteers were selected.RSI and RFS scoring scales were used for scoring,pepsin detection kit was used for saliva pepsin detection,and immunohistochemical methods were used to detect the expression of pepsin in vocal cord tissues of patients with vocal cord polyps and vocal cord cancer.Results The RSI score,RFS score and pepsin test kit results of vocal cord polyp group and vocal cord canc-er group were higher than those of non-vocal cord disease group,and the differences of the three indexes were statis-tically significant(P<0.05).RSI score,pepsin detection kit results and pepsin immunohistochemistry results of vocal cord polyp group showed no significant difference compared with vocal cord cancer group(P>0.05).The RFS score of vocal cord polyp group was significantly different from that of vocal cord cancer group(P<0.05).Conclusion Pepsin may be an important pathogenic factor of vocal cord polyp and vocal cord cancer,and play an im-portant role in the occurrence of these two diseases.The difference of pepsin expression in vocal cord polyp and vo-cal cord cancer suggests that pepsin may have different pathogenesis.
8.Correlation between enlarged perivascular space and cerebral venous reflux in recent small subcortical infarcts within the lenticulostriate artery territory
Zhengrong WU ; Ke ZHANG ; Ce ZONG ; Hongbing LIU ; Kai LIU ; Yanhong WANG ; Yuming XU ; Yuan GAO
Chinese Journal of Neurology 2024;57(3):241-247
Objective:To summarize the incidence of cerebral venous reflux (CVR) in patients with recent small subcortical infarct (RSSI) and explore its correlation with enlarged perivascular spaces (EPVS).Methods:Patients with RSSI in the lenticulostriate artery admitted to the Department of Neurology of the First Affiliated Hospital of Zhengzhou University from January 2019 to December 2022 were included. The baseline demographic data, medical history, and laboratory results of the patients were collected. CVR was assessed by time-of-flight magnetic resonance angiography. Patients were stratified into 2 groups based on the presence (CVR group) or absence of CVR (non-CVR group), and baseline characteristics as well as laboratory test results were compared between the 2 groups. The location and number of EPVS were evaluated using a visual grading scale, with EPVS with higher scores defined as high-grade EPVS (HEPVS). Simultaneous evaluation of cerebral white matter hyperintensities and lacunar infarctions was conducted, followed by intergroup comparisons. The relationship between EPVS and CVR was studied using multiple Logistic regression analysis.Results:A total of 571 patients with RSSI in the lentiform artery area were ultimately included, including 180 females (31.5%). Their age was (59.37±12.87) years. Among them, 73 patients (12.8%) exhibited CVR based on imaging findings, so the incidence of CVR was 12.8%. In comparison between the CVR group ( n=73) and the non-CVR group ( n=498), the proportion of females [21.9% (16/73) vs 32.9% (164/498), χ 2=3.578, P=0.059] was lower and the proportion of history of smoking [38.4% (28/73) vs 27.7% (138/498), χ 2=3.499, P=0.061] was higher in the CVR group, but without statistical significance. Additionally, the history of alcohol consumption [34.2% (25/73) vs 21.7% (108/498), χ 2=5.621, P=0.018] and the proportion of patients with concomitant HEPVS in the basal ganglia area [41.1% (30/73) vs 25.3% (126/498), χ 2=7.999, P=0.005] was higher in the CVR group with statistical significance. Multiple Logistic regression analysis showed that HEPVS in the basal ganglia region remained independently associated with CVR ( OR=1.988, 95% CI 1.190-3.320, P=0.009). Conclusion:EPVS in the basal ganglia region is significantly associated with CVR in the RSSI population, suggesting that venous dysfunction may be closely related to the formation of EPVS.
9.Comparison on Rat Models of Acute Cerebral Infarction Due to Stasis Combined with Toxin Complicated with Cerebral-cardiac Syndrome
Mingjiang YAO ; Junyuan LI ; Yue LIU ; Ce CAO ; Guo YUAN ; Lei LI ; Jianxun LIU ; Yunling ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(1):112-119
ObjectiveTo observe and compare the electrocardiogram index, myocardial morphology, and connexin 43 (Cx43) expression of two rat models of acute cerebral infarction (ACI) due to stasis combined with toxin complicated with cerebral-cardiac syndrome (CCS), and to provide experimental evidence for the research on the occurrence mechanism of cardiac diseases induced by ACI and the clinical diagnosis and treatment of CCS. MethodSixty SPF-grade male SD rats were randomized into six groups (n=10): normal , syndrome of stasis combined with toxin induced by carrageenin combined with dry yeast (CA/Y), multi-infarct induced by micro-embolism (ME), middle cerebral artery occlusion (MCAO), CA/Y+ME, and CA/Y+MCAO groups. The model of syndrome of stasis combined with toxin was established by intraperitoneal injection with carrageenan (CA) at 10 mg·kg-1 on the first day and subcutaneous injection with dry yeast (Y) suspension (2 mg·kg-1) on the second day of modeling. Twenty-four hours after the modeling of ACI, the electrocardiograms (ECGs) of rats in each group were collected and the number/percentage (%) of abnormal ECG was calculated. The infarct area of the brain was evaluated by 2,3,5-triphenyltetrazolium chloride (TTC) staining, and myocardial injury was assessed by hematoxylin-eosin (HE) staining. Immumohistochemical staining and Western blot were employed to determine the expression of Cx43 in the myocardium. ResultA certain number of rats in each model group presented abnormal ECG. Compared with the normal group and CA/Y group, CA/Y+MCAO group had the highest rate of abnormal ECG (P<0.01). Compared with the normal, CA/Y, ME, and CA/Y+ME groups, the CA/Y+ME and CA/Y+MCAO groups showed decreased amplitudes of P-wave and T-wave, shortened P-R interval, and extended Q-T interval, which were particularly obvious in the CA/Y+MCAO group (P<0.05, P<0.01) and in accordance with the cerebral infarction area and pathological changes. The expression of Cx43 was up-regulated in both CA/Y+ME and CA/Y+MCAO groups, especially in the CA/Y+MCAO group (P<0.01). ConclusionThe two rat models of ACI due to stasis combined with toxin complicated with CCS can be used to study the mechanism of heart diseases caused by cerebrovascular diseases and the therapeutic effects of Chinese medicines with the functions of resolving stasis and detoxifying. Moreover, the CA/Y+MCAO method has higher abnormal electrocardiogram rate, severer myocardial pathological injury, and higher expression of Cx43 protein. The models can be chosen according to specific experimental purpose.
10.Linggui Zhugantang Treats Chronic Bronchitis in Rats via PLA2-TRPV1/TRPA1 Pathway
Wei DING ; Wenlai WANG ; Zhenhong LIU ; Xiangyun CHEN ; Zhanzhan HE ; Ce CHU ; Yulu YUAN ; Yongqi XU ; Yuxin ZHANG ; Peizhang ZHAO ; Zhen YANG ; Hongxia ZHAO
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(14):1-9
ObjectiveTo study the effect and mechanism of Linggui Zhugantang in treating chronic bronchitis (CB) induced by exposure to cigarette smoke combined with tracheal instillation of lipopolysaccharide (LPS). MethodSixty SPF-grade SD rats were randomly divided into normal, model, dexamethasone (1 mg·kg-1), and high-, medium-, and low-dose (30.06, 15.03, 7.515 g·kg-1, respectively) Linggui Zhugantang groups by the body weight stratification method, with 10 rats in each group. Each group was administrated with 200 μL LPS (1 g·L-1) by tracheal instillation on days 1 and 14, respectively, while the normal group was administrated with an equal volume of normal saline. Except the normal group, the other groups were exposed to cigarette smoke on days 2-13 and 15-30 (10 cigarettes/time/30 min, twice/day) for the modeling of CB. The rats were administrated with corresponding drugs by gavage for 30 consecutive days from day 2 of modeling, and the mental status, behavior, and body weights of the rats were observed and measured. The wet/dry mass ratio (W/D) of the left lung was measured 30 days after modeling. Hematoxylin-eosin staining was employed to observe the pathological changes in the lung and bronchial tissues. The bronchial mucus secretion and goblet cell proliferation were observed by Alcian blue-periodic acid Schiff (AB-PAS) staining. The levels of mucin 5AC (MUC5AC), interleukin (IL)-13, IL-6, and tumor necrosis factor (TNF)-α in the serum were determined by enzyme-linked immunosorbent assay. The expression of phospholipase A2 (PLA2), transient receptor potential vanilloid receptor 1 (TRPV1), and transient receptor potential ankyrin 1 (TRPA1) in the lung tissue was quantitatively analyzed by immunohistochemistry and Western blot. ResultCompared with the normal group, the model group showcased abnormal mental status and behaviors, bloody secretion in the nose and mouth, the mortality rate of 40%, decreased body weight, severe lung bronchial structure damage, a large number of inflammatory mediators and inflammatory cell infiltration in the tube wall, hyperemia, edema, and fibroplasia, massive proliferation of goblet cells, excessive secretion and accumulation of mucus, stenosis and deformation of the lumen, and aggravation of pulmonary edema (P<0.01). In addition, the model group had higher levels of MUC5AC, IL-13, IL-6, and TNF-α in the serum and higher expression of PLA2 in the lung tissue than the normal group (P<0.01). Compared with the model group, the medication groups showed normal mental status and behaviors, reduced mortality rate, stable weight gain, reduced lung and bronchial injuries, decreased goblet cell proliferation and mucus secretion, and alleviated pulmonary edema (P<0.01). Furthermore, Linggui Zhugantang lowered the levels of MUC5AC, IL-13, IL-6, and TNF-α in the serum and down-regulated the protein levels of PLA2, TRPV1, and TRPA1 in the lung tissue (P<0.01). ConclusionLinggui Zhugantang can reduce the pulmonary inflammation and airway mucus hypersecretion in the rat model of chronic bronchitis. It may exert the effects of reducing inflammation and resolving phlegm by regulating the PLA2-TRPV1/TRPA1 pathway.

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