1.Epidemic trends and prevention and control effectiveness of notifiable infectious diseases in Yichang City based on interrupted time series
Qian WU ; Hao ZHANG ; Zhongcheng YANG ; Ling ZHOU ; Yi LIANG ; Yajun CAO
Journal of Public Health and Preventive Medicine 2026;37(1):88-92
Objective To analyze the epidemiological characteristics of statutory infectious diseases in Yichang City from 2015 to 2023 and evaluate the effectiveness of non-pharmaceutical interventions (NPIs) in infectious disease prevention and control, and to provide a basis for formulating prevention and control strategies. Methods Descriptive epidemiological methods were used to analyze annual incidence rates. SARIMA and SARIMA intervention models were constructed to predict the incidence rates of infectious diseases. Interrupted time series analysis (ITS) was applied to assess the control effectiveness. Results The average annual incidence rate from 2015 to 2023 was 787.47/100 000, with the top five diseases being influenza, hand-foot-and-mouth disease, hepatitis B, tuberculosis, and diarrheal diseases. The average incidence rate from 2015 to 2019 (654.31/100 000) was significantly higher than that from 2020 to 2022 (489.01/100 000) (χ2= 3 499.6, P < 0.05). The total incidence rate in 2023 (2 396.51/100 000) was significantly higher than the average annual incidence rates from 2015-2019 (χ2= 108 186.1, P < 0.05) and 2020-2022 (χ2= 112 869.4, P < 0.05). SARIMA model results indicated that the actual incidence rate from 2020 to 2022 decreased by 73.49% compared to the predicted rate without intervention, with the highest decline observed in respiratory infectious diseases (79.57%). The SARIMA-intervention model showed a 55.48% relative decrease in the total incidence rate for 2023, with the largest reduction in respiratory infectious diseases (63.28%) and a slight increase in intestinal infectious diseases (5.48%). Conclusion NPIs effectively reduce the incidence of statutory infectious diseases in the short term, especially for acute respiratory and intestinal infectious diseases. However, long-term effectiveness faces challenges, necessitating the development of differentiated prevention and control strategies.
2.Relationship between non-suicidal self-injury behaviors, impulsivity, and emotional regulation in adolescents with depressive disorder
Mingfei ZHANG ; Xinyu CHEN ; Fang LIANG ; Zhe CHEN ; Lu QIAN ; Zhijia LI
Sichuan Mental Health 2026;39(1):21-26
BackgroundAdolescents with depressive disorder often engage in non-suicidal self-injury (NSSI) behaviors, which severely impacts their physical and mental health. Impulsivity and emotional regulation are key factors influencing NSSI behaviors. However, research on the mechanisms through which impulsivity and emotional regulation affect NSSI behaviors in adolescent depressive disorder patients with NSSI remains insufficient, limiting the development of effective intervention strategies. ObjectiveTo explore the differences in impulsivity and emotion regulation abilities between adolescent patients with depressive disorder accompanied by and without NSSI behaviors, and to analyze the association between NSSI behaviors and impulsivity and emotion regulation abilities in adolescent patients with depressive disorder accompanied by NSSI behaviors. MethodsA total of 184 adolescents hospitalized in the child and adolescent psychiatry department of Wuxi Mental Health Center from October 2023 to August 2024, who met the diagnostic criteria for depressive disorder according to the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5), were consecutively enrolled as study subjects. Based on the diagnostic criteria for NSSI in DSM-5, patients were divided into NSSI group (n=108) and non-NSSI group (n=76). The Barratt Impulsiveness Scale-11 (BIS-11), the Emotion Regulation Questionnaire (ERQ), the Adolescent Self-Harm Questionnaire, and the Positive and Negative Suicide Ideation (PANSI) were used for assessment. Spearman correlation analysis was employed to explore the correlation between the scores of the Adolescent Self-Harm Questionnaire and the scores of BIS-11 and ERQ in the NSSI group. Multiple regression analysis was conducted to examine the effects of impulsivity and emotion regulation on NSSI behaviors in the NSSI group. ResultsCompared to the non-NSSI group, the NSSI group showed significantly higher scores in BIS-11 non-planned impulsivity (Z=-4.181, P<0.05), action impulsivity (t=4.944, P<0.05), cognitive impulsivity (Z=-3.392, P<0.05), and total score (t=4.763, P<0.05), and lower scores in the cognitive reappraisal of ERQ (t=-4.094, P<0.05) and total score (Z=-2.299, P<0.05), and higher scores in the expression inhibition of ERQ (Z=-3.019, P<0.05). The correlation analysis results showed that the score of the adolescent self-harm questionnaire in the NSSI group was positively correlated with the behavioral impulsivity factor score in the BIS-11 (r=0.434, P<0.05). Multiple regression analysis indicated that action impulsivity factor was a significant correlate of self-injury behaviors in the NSSI group (B=0.855, P<0.05), explaining 22.30% of the total variance. ConclusionAdolescent patients with depressive disorder accompanied by NSSI behaviors exhibit higher levels of impulsivity and poorer emotional regulation abilities. Action impulsivity may play a significant role in the mechanism of NSSI behaviors. [Funded by Wuxi Municipal Health Commission Research Project (number, Q202320)]
3.Preliminary evaluation of the effect of comprehensive health management on the prevention and treatment of ischemic stroke
Shuai ZHU ; Genming ZHAO ; Yiying ZHANG ; Dongni LIANG ; Hongjie YU ; Qian PENG ; Fang XIANG ; Na WANG
Journal of Public Health and Preventive Medicine 2026;37(2):89-93
Objective To evaluate the short-term effects of comprehensive health management interventions for stroke high-risk population screening on the prevention and treatment of ischemic stroke, and to provide reference and basis for improving and exploring health management and prevention strategies for stroke high-risk population. Methods From 2018 to 2022, 13 community health service centers in Jiading District, Shanghai were selected in the present study. Based on information push platform, stroke risk assessment and health intervention follow-up were conducted for community residents through convenience sampling. The residents were divided into a full course intervention group (intervention group) and a routine intervention group (control group) according to different health intervention measures and forms. The incidence of ischemic stroke in the two groups of survey subjects was tracked within 36 months. Results A total of 52144 subjects were included in the study. The total number of patients in the full course intervention group was 14227, with an incidence density of 577.32/100 000 (556.49/100 000-598.12/100 000), which was lower than that of the conventional intervention group (37 917), with an incidence density of 1 485.47/100 000 (1 464.99/100 000-1 505.94/100 000) (χ2=2490.212, P<0.001). The relative risk of the full course intervention group was 0.39, and the relative risk of stroke risk factors in the full course intervention group from low to high was 0.33, 0.43, 0.45, and 0.49, respectively. The incidence density of males in the full course intervention group was 660.76 (627.46/100 000 - 694.05/100 000), with a relative risk of 0.43, and the incidence density of female patients was 509.71/100 000 (483.37/100 000 - 536.05/100 000), with a relative risk of 0.35. The overall incidence density of the population under 62 years old gourp, 62-75 years old group and over 75 years old group was 197.45/100 000 (173.09/100 000 -221.80/100 000), 608.36/100 000 (580.19/100 000-636.54/100 000), and 1 025.06/100 000 (958.51/100 000-1 091.61/100 000), with relative risks of 0.51, 0.44, and 0.38, respectively. Conclusion Comprehensive health management measures can effectively reduce the short-term risk of ischemic stroke, and should be further promoted and improved to enhance the effectiveness of stroke prevention and control.
4.α-ketoglutarate ameliorated arsenic-induced hepatic lipid deposition in offspring via PI3K/AKT signaling pathway
Shuangrui BAO ; Hongyan WU ; Ying SUN ; Tong ZHAN ; Qian YANG ; Xinru LIANG ; Zhiyan WAN ; Wenyi CHEN ; Cheng ZHANG
Acta Universitatis Medicinalis Anhui 2026;61(2):225-231
ObjectiveTo investigate the protective effect of α-ketoglutarate (α-KG) on hepatic lipid deposition in offspring caused by arsenic exposure during pregnancy. Methods8-week-old institute of cancer research (ICR) mice were mated in a ratio of 2∶1 between females and males, and the detection of vaginal plugs confirmed pregnant. A total of 32 pregnant mice were randomly divided into four groups: control group, arsenic group, α-KG group, arsenic+α-KG group. On gestational day 0-16 (GD0-GD16), the arsenic and arsenic+α-KG groups were exposed to sodium arsenite (NaAsO2 ,15 mg/L) in drinking water everyday, and the α-KG and arsenic+α-KG groups were gavaged with α-KG (2 g/kg) everyday. On GD16, pregnant mice were euthanized to collect fetal liver, and fetal body weight and crown-rump length were measured. Gene expression differences between the control group and the arsenic group were analyzed by transcriptome. The total triglycerides (TGs) and subtypes in fetal liver were detected by liquid chromatography tandem mass spectrometry (LC-MS/MS). Oil red O staining was used to observe the histopathological changes in the liver. Quantitative polymerase chain reaction (qPCR) was used to detect the expression level of genes related to lipid synthesis, transport, and degradation, and phosphatidylinositol 3' -kinase/ protein kinase B (PI3K/AKT) in the liver of fetus. ResultsTranscriptomics analysis showed that 2 144 genes were downregulated and 1 675 genes were upregulated in the arsenic exposed fetal liver; body weight and crown-rump length were reduced (PTuKey<0.05); the level of hepatic TGs was elevated in arsenic group (PTuKey<0.05); oil-red O staining showed a significant increase in lipid droplets in arsenic group (PTuKey<0.01); the expression of lipid synthesis-related genes were significantly upregulated (PTuKey<0.05); the expression of β-oxidation-related genes and lipid degradation-related genes were downregulated (PTuKey<0.05); the expression of PI3K, AKT decreased(PTuKey<0.05). Compared with the arsenic group, the body weight and crown-rump length of fetus increased in the arsenic+α-KG group (PTuKey<0.05); the level of hepatic TGs decreased in the arsenic+α-KG group (PTuKey<0.05); oil red O staining showed lipid droplets significantly decreased (PTuKey<0.01); the expression of lipid synthesis-related genes were downregulated (PTuKey<0.05), the expression of β-oxidation-related genes and lipid degradation-related genes were upregulated (PTuKey<0.05); the expression levels of PI3K and AKT increased (PTuKey<0.05). Conclusionα-KG alleviated hepatic lipid deposition in offspring exposed to arsenic during pregnancy through activating PI3K/AKT signaling pathway.
5.Effect evaluation of pharmaceutical service based on root cause analysis combined with KAP theory on decreasing the protocol violations of investigational medicinal products rate in pediatric clinical trials
Chunyan GUO ; Yi ZHANG ; Yuxin YANG ; Yuguang LIANG ; Qian DING ; Qian WANG ; Chengyue ZHANG ; Yu SUN ; Peng GUO
China Pharmacy 2026;37(9):1206-1210
OBJECTIVE To investigate the effect of pharmaceutical services guided by root cause analysis (RCA) in a problem-oriented manner combined with knowledge-attitude-practice (KAP) theory on reducing the incidence of protocol violations of investigational medicinal products in pediatric clinical trials. METHODS A total of 617 participants from 69 drug clinical trial projects conducted in our hospital from January 2016 to December 2020 were selected as the control group, and 868 participants from 72 drug clinical trial projects from January 2022 to December 2025 as the observation group. RCA was performed on the protocol violations of investigational medicinal product in the control group to identify the types and underlying causes. The control group received routine pharmaceutical services for drug clinical trials, while the observation group was provided with precision pharmaceutical services from the three dimensions of knowledge, attitude and practice on the basis of routine pharmaceutical services, according to the root causes identified by RCA. The occurrence of investigational medicinal products protocol violations was compared between the two groups. RESULTS The total incidence of protocol violations of investigational medicinal products, as well as the incidences of minor and major protocol violations, were all significantly lower in the observation group than in the control group ( P <0.001). The main types of protocol violations in both groups included missed/under-/over-dosing of medications, non-adherence to administration time, failure to adjust dosage as required, and combined medication/vaccination in violation of the protocol. Regarding the responsible subjects of protocol violations, the incidences of protocol violations attributed to participants and their guardians as well as investigators and accidental factors were significantly lower in the observation group than in the control group ( P <0.001, P <0.001, P =0.025). However, there were no statistically significant differences in the incidences of protocol violations caused by sponsor-related reasons between the two groups ( P >0.05). CONCLUSIONS Pharmaceutical services led by pharmacists, based on problem-oriented RCA and combined with KAP theory, can effectively reduce the protocol violations of investigational medicinal products rate in pediatric clinical trials, thereby safeguarding the safety and rights of study participants.
6.Differences in deltamethrin resistance and kdr gene mutation in Culex tritaeniorhynchus population in and outside the Yellow Sea wetland
Xiao-er ZHANG ; Zhi-ming WU ; Ye TIAN ; Qian CUI ; Yu-qian JI ; Huan WANG ; Shu-juan YANG ; Yi-chao ZHAO ; Yu WANG ; Hua-yu YIN ; Yu DING ; Guo-jin YAN ; Min-sen ZHAO ; Shou-gang ZHANG ; Bing-dong SONG ; Hong-na CHEN ; Jian GAO ; Wei-fang YANG ; Yu-fu ZHANG ; Hui LIU ; Hong-liang CHU
Acta Parasitologica et Medica Entomologica Sinica 2026;33(2):101-107
Objective To gain insights into the biological characteristics of different populations of Culex tritaeniorhynchus within and around the Yellow Sea wetland from the perspective of the occurrence of resistance, we investigated the levels of resistance to deltamethrin and kdr gene mutation in the wetland and its peripheral areas. Methods Specimens were collected from Cx. tritaeniorhynchus populations at two monitoring sites in the Rare Bird National Nature Reserve and Tiaozi Ni Wetland Scenic Area, and also from two populations in Yancheng City and the Liuhe District of Nanjing, and the resistance of these mosquitoes to deltamethrin was determined using the CDC biotest bottle method. For each concentration of deltamethrin assessed, a random subset of exposed specimens was selected for amplification of the kdr gene fragment, followed by Sanger sequencing to identify and analyze resistance-associated mutations. Results The LC50 levels of deltamethrin among mosquitoes from the four populations in Luhe, Yancheng, the Rare Bird National Nature Reserve and the Tiaozi Ni Wetland Scenic Area were 2.048 5, 7.798 2, 3.473 3, and 17.695 5 mg/mL, respectively, with corresponding concentrations of deltamethrin ranging from 0.005 to 5.000,0.050 to 50.000,0.050 to 25.000 and 0.050 to 50.000 mg/mL, respectively. Furthermore, the ranges of the KT50 values were 11.76-107.43, 67.05-216.30,29.77-107.43 and 28.40-329.51 min; the 1-h knockdown rates were 34.58%-99.15%, 9.52%-43.80%, 55.09%-73.01%, and 10.09%-68.07%; and the 24-h mortality rates were 12.15%-67.52%,9.52%-79.56%,13.17%-82.21%, and 11.01%-78.99%, respectively. With respect to kdr gene mutation, we assayed a total of 63,70,59, and 57 mosquitoes for the four populations, for which we detected L1014F mutation frequencies of 14.29%, 35.00%, 20.34%, and 31.58%, respectively, with a majority of these mutations being heterozygous for resistance. In addition, five adult mosquitoes were identified has having synonymous mutations at site 1011[i. e. , AAT(asparagine)mutation to AAC(asparagine)]. Conclusions Our findings revealed the clear resistance of Cx. tritaeniorhynchus to deltamethrin in the Yancheng region of the Yellow Sea wetland, and the resistance phenotype and kdr frequency of Cx. tritaeniorhynchus in the wetland environment were comparable to those of Cx. tritaeniorhynchus in the wetland environment, thereby indicating that the resistance of different populations of Cx. tritaeniorhynchus was homogeneous under the pressure of different insecticide selection within and around the wetland. However, the underlying mechanisms need to be further studied.
7.Mechanisms of Macrophage Glycolysis in Regulating Acute Lung Injury and TCM Intervention Strategies Based on Theory of "Spleen Failing to Disperse Essence"
Qian XU ; Maofu ZHANG ; Xiali LIANG ; Guoxiong HAO ; Jingwei LI ; Xiaojie JIN ; Yongqi LIU ; Xiangxia LUO ; Zhiming ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(18):218-226
Acute lung injury (ALI) is a critical respiratory emergency caused by various non-cardiogenic factors, including severe pulmonary and extrapulmonary infections, lung contusion, and sepsis. Its pathological features are centered on alveolar-capillary barrier dysfunction, uncontrolled inflammatory responses, and impaired alveolar fluid clearance, manifesting as refractory hypoxemia and respiratory distress, with a poor clinical prognosis. Modern studies have revealed that mitochondrial dysfunction and glucose metabolic reprogramming in macrophages, characterized by hyperactivated glycolysis, drive pro-inflammatory polarization and represent a key mechanism leading to excessive inflammatory responses and disease progression in ALI. Therefore, targeting macrophage glycolysis may be a potential therapeutic strategy for ALI. The Plain Questions: Special Discussion on Channels and Vessels in Huangdi's Internal Classic states that "The spleen disseminates essence upward to the lungs". When the spleen fails in transport and transformation, the distribution of refined nutrients becomes disordered, resulting in the endogenous generation of turbid pathogens that obstruct the pulmonary collaterals, causing failure of lung dispersion and descent and leading to dyspneic reversal. This forms the dynamic pathological pattern of ''deficiency in the root with excess in the manifestation'', thereby proposing the core pathogenesis of ALI as ''spleen deficiency with transport dysfunction and turbid pathogens obstructing the lungs''. This process is intrinsically associated with the inflammatory cascade triggered by disordered macrophage glucose metabolism. Taking the theory of ''spleen failing to disperse essence'' as the entry point, the present study systematically elucidates the progressive pathological mechanism of "energy metabolism disorder-cytokine storm'' in ALI from the perspectives of the ''spleen deficiency-turbid obstruction'' pathogenesis and macrophage glycolysis-pro-inflammatory polarization. In addition, we summarize Chinese medicine compound formulas and monomeric components that ''restore spleen transport and eliminate turbid pathogens'', and explore their potential mechanisms in the treatment of ALI by regulating macrophage metabolic phenotypes to improve the state of ''spleen failing to disperse essence''. This provides a molecular basis for elucidating the ''spleen-lung'' energy metabolism dialogue, deepens understanding of the multi-target regulatory mechanisms of herbal prescriptions, and promotes the deep integration of classical theory with modern medicine.
8.Mechanism of Rehmannia glutinosa-medicated serum regulating BV2 microglia polarization to interfere with neuroinflammation
Ping TIAN ; Hongzhi AN ; Qian FEI ; Ruifeng LIANG ; Dan YANG ; Xuexia ZHANG ; Wenjing GE ; Yifei LIU ; Hongwei LI ; Deen HAN
China Pharmacy 2026;37(15):1979-1985
OBJECTIVE To study the mechanism of action of Rehmannia glutinosa-medicated serum (RG) in regulating lipopolysaccharide (LPS)-induced polarization of BV2 microglia to interfere with neuroinflammation. METHODS An in vitro neuroinflammation model of BV2 cells induced by LPS was established. Cells were divided into control group, LPS group, 10%RG group, 20%RG group, BAY 11-7082 [nuclear factor kappa B (NF-κB) inhibitor] group, and 20%RG+BAY 11-7082 group. Except for the control group, cells in all other groups were pretreated with corresponding drugs for 12 h and then stimulated with LPS for 24 h. The morphology of cells in each group was observed, and the fluorescence intensity of ionized calcium binding adaptor molecule 1 (Iba-1), inducible nitric oxide synthase (iNOS), CD206, the mRNA expression of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), IL-1β, iNOS, IL-4, IL-10, transforming growth factor-β (TGF-β), arginase-1 (Arg-1), and the Toll-like receptor 4 (TLR4)/NF-κB/NOD-like receptor thermal protein domain associated protein 3 (NLRP3) signaling pathway-related protein expression were detected. RESULTS Compared with the control group, the LPS group showed significant changes in cell morphology, exhibiting a typical M1 activated morphology. The fluorescence intensity of Iba-1 and iNOS, the relative expression levels of TNF-α, IL-6, IL-1β, iNOS mRNA, the relative expression levels of TLR4, NLRP3, caspase-1 p20, IL-1β p17 protein, and the phosphorylation levels of NF-κB p65 and inhibitor of nuclear factor kappa B α were significantly increased (P<0.05). The fluorescence intensity of CD206 and the relative expression levels of IL-4, IL-10, TGF-β, and Arg-1 mRNA were significantly reduced (P<0.05). Compared with the LPS group, the changes in the above indicators in the cells of the 10%RG group, 20%RG group, BAY 11-7082 group, and 20%RG+BAY 11-7082 group were significantly reversed (P<0.05), and there was no statistically significant difference in the comparison of the last three groups (P>0.05). CONCLUSIONS RG can effectively inhibit the overall activation of microglia and correct their M1/M2 polarization imbalance, and its mechanism may be closely related to the inhibition of excessive activation of the TLR4/NF-κB/NLRP3 signaling pathway.
9.Molecular mechanism of verbascoside in promoting acetylcholine release of neurotransmitter.
Zhi-Hua ZHOU ; Hai-Yan XING ; Yan LIANG ; Jie GAO ; Yang LIU ; Ting ZHANG ; Li ZHU ; Jia-Long QIAN ; Chuan ZHOU ; Gang LI
China Journal of Chinese Materia Medica 2025;50(2):335-348
The molecular mechanism of verbascoside(OC1) in promoting acetylcholine(ACh) release in the pathogenesis of Alzheimer's disease(AD) was studied. Adrenal pheochromocytoma cells(PC12) of rats induced by β-amyloid protein(1-42)(Aβ_(1-42)) were used as AD models in vitro and were divided into control group, model group(Aβ_(1-42) 10 μmol·L~(-1)), OC1 treatment group(2 and 10 μg·mL~(-1)). The effect of OC1 on phosphorylated proteins in AD models was analyzed by whole protein phosphorylation quantitative omics, and the selectivity of OC1 for calcium channel subtypes was virtually screened in combination with computer-aided drug design. The fluorescence probe Fluo-3/AM was used to detect Ca~(2+) concentration in cells. Western blot analysis was performed to detect the effects of OC1 on the expression of phosphorylated calmodulin-dependent protein kinase Ⅱ(p-CaMKⅡ, Thr286) and synaptic vesicle-related proteins, and UPLC/Q Exactive MS was used to detect the effects of OC1 on ACh release in AD models. The effects of OC1 on acetylcholine esterase(AChE) activity in AD models were detected. The results showed that the differentially modified proteins in the model group and the OC1 treatment group were related to calcium channel activation at three levels: GO classification, KEGG pathway, and protein domain. The results of molecular docking revealed the dominant role of L-type calcium channels. Fluo-3/AM fluorescence intensity decreased under the presence of Ca~(2+) chelating agent ethylene glycol tetraacetic acid(EGTA), L-type calcium channel blocker verapamil, and N-type calcium channel blocker conotoxin, and the effect of verapamil was stronger than that of conotoxin. This confirmed that OC1 promoted extracellular Ca~(2+) influx mainly through its interaction with L-type calcium channel protein. In addition, proteomic analysis and Western blot results showed that the expression of p-CaMKⅡ and downstream vesicle-related proteins was up-regulated after OC1 treatment, indicating that OC1 acted on vesicle-related proteins by activating CaMKⅡ and participated in synaptic remodeling and transmitter release, thus affecting learning and memory. OC1 also decreased the activity of AChE and prolonged the action time of ACh in synaptic gaps.
Animals
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Rats
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Glucosides/administration & dosage*
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Acetylcholine/metabolism*
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Alzheimer Disease/genetics*
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PC12 Cells
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Phenols/chemistry*
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Neurotransmitter Agents/metabolism*
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Drugs, Chinese Herbal
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Calcium-Calmodulin-Dependent Protein Kinase Type 2/genetics*
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Humans
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Phosphorylation/drug effects*
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Calcium/metabolism*
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Polyphenols
10.Drying kinetics of Salviae Miltiorrhizae Radix et Rhizoma and dynamics of active components in drying process.
Yu-Qin LI ; Xiu-Xiu SHA ; Zhe ZHANG ; Shu-Lan SU ; Liang NI ; Sheng GUO ; Hui YAN ; Da-Wei QIAN ; Jin-Ao DUAN
China Journal of Chinese Materia Medica 2025;50(1):128-139
This study explored the drying kinetics of Salviae Miltiorrhizae Radix et Rhizoma(SM), established the suitable models simulating the drying kinetics, and then analyzed the dynamic changes of active components during the drying processes with different methods, aiming to provide a basis for the establishment of suitable drying methods and the quality control of SM. The drying kinetics were studied based on the drying curve, drying rate, moisture effective diffusion coefficient, and drying activation energy, and the appropriate drying kinetics model of SM was established. The drying performance of different methods, such as hot air drying, infrared drying, and microwave drying of SM was evaluated, and the changes in the content of 10 salvianolic acids and 6 tanshinones during drying were analyzed by UPLC-TQ-MS. The Technique for Order Preference by Similarity to an Ideal Solution(TOPSIS) was employed to evaluate the quality of SM dried with different methods. The results showed that the drying rate and moisture effective diffusion coefficient of SM increased with the rise in drying temperature, and the maximum drying rates of different methods were in the order of microwave drying > infrared drying > hot air drying, slice > whole root. The drying rate decreased with the rise in temperature and the extension of drying time. The activation energy of hot air drying was higher than that of infrared drying in SM. The most suitable model for simulating the drying process of SM was the Page model. The TOPSIS results suggested infrared drying at 50 ℃ was the optimal drying method for SM. During the drying process, the content of salvianolic acids increased in different degrees with the loss of moisture, among which salvianolic acid B showed the largest increase of 44 times compared with that in the fresh medicinal material. Tanshinones also existed in the fresh herb of SM, and the content of tanshinone Ⅱ_A increased by 3 times after drying. The results provided a basis for the establishment of suitable drying methods and the quality control of SM.
Salvia miltiorrhiza/chemistry*
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Desiccation/methods*
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Drugs, Chinese Herbal/chemistry*
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Rhizome/chemistry*
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Kinetics
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Quality Control
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Abietanes


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