1.Monitoring results of mosquito-ovitraps placed in different orientations in multi-storey residential areas
Caixiong LIU ; Bin GE ; Haibing ZHANG ; Lin WANG ; Tao YANG ; Yujiao WEI ; Haiying XIE ; Yu ZHANG ; Hongxia LIU ; Juntao SHEN
Shanghai Journal of Preventive Medicine 2025;37(2):109-113
ObjectiveTo find out whether there is any difference in the monitoring results of mosq-ovitraps placed in different orientations in multi-storey residential areas, so as to provide a scientific basis for routine and emergency monitoring of Aedes albopictus with mosq-ovitraps in residential areas. MethodsFrom July 6th to October 26th 2023, one mosquito ovitrap was set up in each of the 4 orientations of east, south, west and north around the buildings in a multi-storey residential area in Jinhui Town, Fengxian District, Shanghai. Data was collected and recorded 72 hours after placement. The chi-square test was used to compare the mosquito ovitrap indices (MOIs) of two independent samples, and the Kruskal⁃Wallis H test was used to compare the MOIs of multiple independent samples. ResultsAfter 16 weeks of surveillance, 997 mosquito ovitraps were recovered, of which 211 were positive, with the mosquito ovitrap index (MOI) of 21.16% and the Aedes albopictus density index of 1.03 mosquitoes·ovitrap-1. The MOIs were higher in September (24.22%) and October (23.96%), and the MOIs in the west, south and north within the two months were all above 20.00%. From July to October, the MOIs in the east, west, south and north were 20.70%, 22.20%, 25.50% and 16.20%, respectively, and the difference in MOIs among the 4 orientations was not statistically significant (χ2=6.647, P=0.084). Stratified analysis by month showed that in August, the south side of the multi-storey residential areas had the highest MOI (31.30%), the north side had the lowest MOI (1.30%), and there was a statistically significant difference in MOI in the east, west, south and north (χ2=25.986, P<0.001). In October, the MOI in the west was the highest (33.30%) and the MOI in the east was the lowest (6.30%), the difference in MOIs of the 4 orientations was statistically significant (χ2=12.007, P=0.007). The MOIs in the south side of the building in the outskirts of the residential area from the 1st week in July to the 4th week in October was lower (19.20%) than that in the south side of the inner building (31.70%), and the difference in MOI was statistically significant (χ2=5.118, P=0.024). ConclusionThe study of MOI in different orientations in a multi-storey residential area is a preliminary exploration based on field work, and the results show that there is a difference in MOIs in different orientations during the peak breeding period of mosquitoes. Further indicators such as temperature, humidity and wind speed in different orientations can be collected to explore the influencing factors of MOIs.
2.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.
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.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.
5.Traditional Chinese Medicine Regulates Autophagy to Prevent and Treat Osteoarthritis: A Review
Jutang CHAI ; Qian YANG ; Hongxia NING ; Wenjuan LIU ; Tao LIU ; Xiaotao WEI ; Xiaoyu LIU
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(2):287-298
Osteoarthritis (OA) is a common chronic, highly prevalent, painful, and disabling degenerative joint disease. It has imposed a heavy burden on social healthcare and patients' psychology and economy due to its clinical symptoms such as impaired joint mobility and severe joint pain and the immature therapies. Studies have shown that OA is closely associated with articular cartilage dysfunction, synthesis and degradation disorders of chondrocyte extracellular matrix (ECM), and joint inflammation. Moderate autophagy can restore the function of damaged chondrocytes, regulate chondrocyte apoptosis, and promote the synthesis and metabolism of ECM to alleviate the inflammation of joints and delay the onset and progression of OA. According to the clinical symptoms, OA can be classified into the category of impediment in traditional Chinese medicine. With the theories of holistic conception, treatment based on syndrome differentiation, and individualised diagnosis and treatment, traditional Chinese medicine has demonstrated definite effects in the treatment of OA in thousands of years of practice. Moreover, traditional Chinese medicine causes mild adverse reactions, and the patients have high tolerance and acceptance. This paper briefly explains the roles of autophagy and the related regulatory proteins, such as Unc-51-like autophagy-activated kinase 1 (ULK1), Beclin-1, and microtubule-associated protein light chain 3 (LC3), and details the latest research achievements in the prevention and control of OA by traditional Chinese medicines and its related markers via the regulation of autophagy, so as to provide a idea for the in-depth research in this field and the clinical application of traditional Chinese medicine in preventing and treating OA.
6.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.
7.Mechanism of Traditional Chinese Medicine Intervening in Pyroptosis to Prevent and Treat Bone and Joint Related Diseases: A Review
Jutang CHAI ; Hongxia NING ; Yongzhang LI ; Xiaoyu LIU ; Xiaotao WEI ; Tao LIU ; Zhigang WEN
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(6):289-298
Osteoarthritis (OA), rheumatoid arthritis (RA), gouty arthritis (GA), and intervertebral disc degeneration (IVDD) are the most common bone and joint-related diseases in clinical practice. They can all affect related joints, leading to joint pain, swelling, dysfunction, and other symptoms. The difference is that OA is mainly caused by joint wear and age-related degradation and is manifested as joint pain, stiffness, and limited movement. RA is an autoimmune disease, manifested as joint pain, swelling, morning stiffness, and systemic symptoms. GA is caused by abnormal uric acid metabolism, manifested as acute arthritis, and IVDD is caused by intervertebral disc degeneration. Studies have shown that the mechanism of the occurrence and development of these bone and joint diseases is extremely complex. Pyroptosis is closely related to these bone and joint-related diseases by participating in bone and joint inflammation, cartilage metabolism imbalance, extracellular matrix degradation, and pathological damage of bone and joint. Inhibition of bone and joint-related pyroptosis will effectively prevent and treat bone and joint-related diseases. At the same time, many studies have confirmed that traditional Chinese medicine (TCM) has a prominent curative effect and obvious advantages in the prevention and treatment of bone and joint-related diseases. TCM can reduce the inflammatory reaction of bone and joints, improve the pathological damage of bone and joint diseases, and relieve bone and joint pain by inhibiting pyroptosis. Therefore, this article aims to briefly explain the relationship between pyroptosis and the occurrence and development of bone and joint-related diseases and summarize the latest research reports on the intervention of pyroptosis in the treatment of bone and joint-related diseases by TCM monomers, TCM extracts, and TCM compounds. It offers new ideas for the in-depth study of the pathogenesis and drug treatment of bone and joint diseases and provides a basis for the clinical use of TCM to prevent and treat bone and joint diseases.
8.Wolbachia infection and genotyping in Aedes albopictus
Xihong LYU ; Chi ZHANG ; Xuefei QIAO ; Fei WANG ; Junjie TAO ; Bowen PANG ; Hongxia LIU
Shanghai Journal of Preventive Medicine 2024;36(1):30-35
ObjectiveTo investigate the infection and genotypes of Wolbachia in Aedes albopictus. MethodsAdult and larval samples of Aedes albopictus were collected from different residential and wild areas from 2020 to 2021, Wolbachia surface protein (wsp) gene was amplified and genotyped for wAlbA and wAlbB by PCR, and sequenced for phylogenetic analysis. The difference of detection rate among different habitats, male and female adult mosquitoes, adult and larvae was compared by χ2 analysis. ResultsThe detection rate of Wolbachia in adult and larvae of Aedes albopictus were 43.5% (77/177) and 70.4% (190/270), respectively, with a statistically significant difference (χ2=32.086,P<0.001), and wAlbA and wAlbB were mainly detected together. The detection rate of Wolbachia in female and male Aedes albopictus were 50.7% (76/150) and 3.7% (1/27), respectively, with a statistically significant difference(χ2=20.533,P<0.001). The detection rate of adult Aedes albopictus in Songjiang wild area, residential area and Hongkou residential area were 91.7% (55/60), 18.8% (22/117) and 41.7% (30/72), respectively, with a statistically significant difference (χ2=54.322,P<0.001). Genotyping and phylogenetic analysis showed that adult and larvae of Aedes albopictus infected with Wolbachia were mainly wAlb A and wAlb B. In addition, some sequences formed clades independently, and the genetic distance from other sequences was relatively large. ConclusionInfection of Wolbachia in Aedes albopictus is relatively common in Songjiang District. The main genotypes are wAlb A and wAlb B and there may be other subtypes, which are worthy of further exploration and research.
9.Association between prenatal exposure to PM 2.5 and fetal growth: a prospective cohort study
Lei HUANG ; Hong LYU ; Xin XU ; Tianyu SUN ; Yiyuan CHEN ; Yanjie ZHANG ; Bo YANG ; Qun LU ; Yangqian JIANG ; Tao JIANG ; Jiangbo DU ; Xiaoyan WANG ; Hongxia MA ; Zhibin HU ; Yuan LIN
Chinese Journal of Epidemiology 2024;45(6):794-801
Objective:To investigate the association of exposure to PM 2.5 and its constituents during pregnancy and fetal growth and to further identify critical windows of exposure for fetal growth. Methods:We included 4 089 mother-child pairs from the Jiangsu Birth Cohort Study between January 2016 and October 2019. Data of general characteristics, clinical information, daily average PM 2.5 exposure, and its constituents during pregnancy were collected. Fetal growth parameters, including head circumference (HC), abdominal circumference (AC), and femur length (FL), were measured by ultrasound after 20 weeks of gestation, and then estimated fetal weight (EFW) was calculated. Generalized linear mixed models were adopted to examine the associations of prenatal exposure to PM 2.5 and its constituents with fetal growth. Distributed lag nonlinear models were used to identify critical exposure windows for each outcome. Results:A 10 μg/m 3 increase in PM 2.5 exposure during pregnancy was associated with a decrease of 0.025 ( β=-0.025, 95% CI: -0.048- -0.001) in HC Z-score, 0.026 ( β=-0.026, 95% CI: -0.049- -0.003) in AC Z-score, and 0.028 ( β=-0.028, 95% CI:-0.052--0.004) in EFW Z-score, along with an increased risk of 8.5% ( RR=1.085, 95% CI: 1.010-1.165) and 13.5% ( RR=1.135, 95% CI: 1.016-1.268) for undergrowth of HC and EFW, respectively. Regarding PM 2.5 constituents, prenatal exposure to black carbon, organic matter, nitrate, sulfate (SO 42-) and ammonium consistently correlated with decreased HC Z-score. SO 42- exposure was also associated with decreased FL Z-scores. In addition, we found that gestational weeks 2-5 were critical windows for HC, weeks 4-13 and 19-40 for AC, weeks 4-13 and 23-37 for FL, and weeks 4-12 and 20-40 for EFW. Conclusions:Our findings demonstrated that exposure to PM 2.5 and its constituents during pregnancy could adversely affect fetal growth and the critical windows for different fetal growth parameters are not completely consistent.
10.Effect of Qingfei Paidu Decoction on Acute Lung Injury Model Mice Based on TRPV1/TRPA1 Heat-sensitive Channel
Yulu YUAN ; Zhanzhan HE ; Ce CHU ; Xuguang TAO ; Zhen YANG ; Xiangyun CHEN ; Wei DING ; Yongqi XU ; Yuxin ZHANG ; Peizhang ZHAO ; Wanping CHEN ; Hongxia ZHAO ; Wenlai WANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(24):95-102
ObjectiveTo investigate the mechanism and effect of Qingfei Paidu decoction on transient receptor potential vanilloid-1/Transient receptor potential ankyrin1 (TRPV1/TRPA1) based on heat-sensitive channel and inflammatory response. MethodAccording to body weight, 80 8-week-old C57BL/6 mice were randomly divided into the normal group, model group, dexamethasone group (5 mg·kg-1), and low-dose, medium-dose, and high-dose groups of Qingfei Paidu decoction (14.865, 29.73, 59.46 g·kg-1), with 12 mice in each group. In addition to the normal group, the other groups were administered 20 μL (1×10-3 g·kg-1) to each mouse by airway infusion to establish the acute lung injury (ALI) model. In the administration group, the drug was given 1 h after modeling and again after an interval of 24 h. The lung tissue was taken 36 h after modeling. Double lung wet/dry weight ratio(W/D), hematoxylin-eosin (HE) staining, enzyme-linked immunosorbent assay (ELISA), and Western blot were used to observe and detect the pathological changes of lung tissue, expression levels of inflammatory cytokine tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), and expressions of TRPV1 and TRPA1 proteins in heat-sensitive channel, nuclear factor kappa-B (NF-κB), inhibitor of NF-κB (IκBα) in inflammatory pathway, and phosphorylated proteins. The phosphorylated protein/total protein ratio was calculated. ResultCompared with that in the normal group, the lung tissue of mice in the model group was seriously damaged, and pulmonary capillary permeability increased. Alveolar capillary congestion and dilation destroyed the complete structure of the alveolar, and the alveolar wall thickened. A large number of inflammatory cells and red blood cells were infiltrated, and pulmonary edema was significantly aggravated. The expressions of TNF-α, IL-6, TRPV1, TRPA1, phosphorylated NF-κB p65/NF-κB p65, and phosphorylated IκBα/IκBα were significantly increased (P<0.01), and the whole lung W/D was significantly increased (P<0.01). Compared with the model group, the dexamethasone group and low-dose, medium-dose, and high-dose groups of Qingfei Paidu decoction could significantly improve pulmonary edema. TNF-α, IL-6, TRPV1, TRPA1, lung tissue NF-κB p65, and IκBα phosphorylated protein/total protein ratio decreased significantly (P<0.05, P<0.01). The whole lung W/D also decreased significantly (P<0.05, P<0.01). ConclusionQingfei Paidu decoction has anti-inflammatory and protective effects on LPS-ALI mice, which can effectively reduce inflammation, induce diuresis, and alleviate edema. Its mechanism may be related to the regulation of the expression of TRPA1 and TRPV1 and the inhibition of the activation of the NF-κB pathway.

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