1.Upgrade and practice of the drug traceability code management system in children’s hospital under the “payment by code”background
Jinxiang LIN ; Suping LI ; Yanqing SU ; Dehui YE ; Xianwen CHEN ; Yushuang CHEN ; Zhihui JI ; Dongchuan LAI ; Xiayang WU
China Pharmacy 2026;37(3):288-293
OBJECTIVE To upgrade the drug traceability code management system for a pediatric hospital under the “payment by code” background, aiming to comprehensively enhance traceability integrity, efficiency, and compliance. METHODS Taking Xiamen Children’s Hospital as the implementation setting, a before-and-after control design was adopted to construct an intelligent drug traceability code management system through systematic upgrades involving the technology platform, core mechanisms, and coordination with medical insurance. Key interventions included: upgrading a traceability code management platform and designing a dynamic code pool; innovating differentiated traceability mechanisms for routine, split-dose, and special drugs; establishing a tiered early-warning and emergency response system; and constructing a data coordination and quality control system. The drug traceability code upload rate served as the primary outcome. Process indicators such as the root causes distribution of failed uploads and the duration of medication returns, and a comprehensive outcome (the number of insurance-flagged abnormal prescriptions) were also analyzed. The data between the baseline period (April 2025) and the observation period (June-August 2025) were compared and evaluated. RESULTS After the upgrade, the overall upload rate of drug traceability codes increased from 9.21% (baseline) to 99.86% (August 2025). The upload rate of traceability codes in previously unmanaged areas, such as the inpatient pharmacy and pharmacy intravenous admixture services, soared from 0 to nearly 100%. The proportion of non-uploads due to system issues fell from 66.44% (June 2025) to 2.62% (August Additionally, the number of insurance-flagged) abnormal prescriptions dropped sharply from 2 275.00 in the first “payment by code” policy month (July 2025) to 212.00 by the end of the observation period (August 2025), a 90.70% decrease. CONCLUSIONS The developed management system effectively addresses complex scenario challenges such as high-frequency drug splitting. It significantly enhances traceability code upload performance and ensures a high degree of compliance with medical insurance data requirements. These outcomes contribute to proactive risk mitigation against insurance claim denials and demonstrate a concurrent optimization of pharmacy operations.
2.Expert consensus on the implementation and management of drug selection for centralized volume-based procurement in medical institutions of Guangxi
Tingting LI ; Ganping ZHOU ; Yanqing CHEN ; Dongni WU ; Weiyan TANG ; Hongliang ZHANG
China Pharmacy 2026;37(7):829-834
OBJECTIVE To formulate the Expert Consensus on the Implementation and Management of Drug Selection for Centralized Volume-Based Procurement in Medical Institutions of Guangxi (hereinafter referred to as the “ Consensus ”), and to provide decision-making support and practical guidance for the drug selection and management of centralized volume-based procurement (hereinafter referred to as “centralized procurement”) drugs in medical institutions at all levels in Guangxi. METHODS A systematic review was conducted on the materials from previous batches of centralized procurement implemented in Guangxi. A comprehensive search was carried out for drug-related works and books, along with a systematic collation of guidelines on drug selection, expert consensus on centralized procurement, and policy documents. Through three rounds of specialized seminars, combined with existing evidence-based data and the practical drug selection experiences of medical institutions at various levels, this Consensus was formulated after thorough discussion and successive rounds of revision. RESULTS & CONCLUSIONS The Consensus systematically outlines the three key stages in the implementation of centralized procurement in medical institutions: procurement volume reporting, confirmation of agreed procurement volume, and procurement and usage implementation. It proposes drug selection strategies for centralized procurement bas ed on multiple dimensions, including specifications, dosage forms, packaging materials, fill volume, and manufacturing enterprises. In response to practical challenges encountered in the selection process, corresponding countermeasures are proposed, such as establishing a regularized information reserve mechanism, strengthening information technology support, and implementing categorized selection approaches. The Consensus advocates for medical institutions to construct an integrated “policy, data, and quality” decision-making system to promote full-cycle management of centralized procurement. This Consensus will provide scientific and practical guidance for medical institutions at all levels in Guangxi in the drug selection of centralized procurement, facilitating the smooth implementation and sustainable development of centralized procurement policies at the institutional level.
3.Clinical features and early warning of the sepsis in immunocompromised host sepsis.
Yanqing CHEN ; Runjing GUO ; Xiao HUANG ; Xiaoli LIU ; Huanhuan TIAN ; Bingjie LYU ; Fangyu NING ; Tao WANG ; Dong HAO
Chinese Critical Care Medicine 2025;37(3):245-250
OBJECTIVE:
To explore the clinical features of the sepsis in immunocompromised hosts and establish an early warning equation.
METHODS:
A retrospective study was conducted on sepsis patients admitted to the intensive care unit (ICU) of Binzhou Medical University Hospital from October 2011 to October 2022. General information, infection site, etiology results and drug susceptibility, clinical symptoms, inflammatory indicators, acute physiology and chronic health status evaluation II (APACHE II), sequential organ failure assessment (SOFA), incidence of immune paralysis, and outcome during hospitalization were collected. Based on whether they met the diagnostic criteria for immunocompromised hosts, patients were divided into immunocompromised group and immune normal group. The clinical information of the two groups were compared. Multivariate Logistic regression was used to analyze the risk factors of patients with immunocompromised sepsis and the regression equation model was initially established. Omnibus test and Hosmer-Lemeshow test were used to evaluate the model.
RESULTS:
A total of 169 patients with sepsis were included, including 61 in the immunocompromised group and 108 in the normal immune group. The top 3 infection sites in the immunocompromised group were bloodstream infection, pulmonary infection and abdominal infection. The top 3 infection sites in the normal immune group were pulmonary infection, bloodstream infection and abdominal infection. The infection rate of Gram-negative bacteria in the immunocompromised group was significantly lower than that in the normal group [49.2% (30/61) vs. 64.8% (70/108), P < 0.05]. The infection rate of Gram-positive bacteria [27.9% (17/61) vs. 13.9% (15/108)] and multidrug-resistant bacteria [54.1% (33/61) vs. 29.6% (32/108)] were significantly higher than those in normal immune group (both P < 0.05). In terms of clinical symptoms, the proportion of fever in the immunocompromised group was significantly lower than that in the immune normal group [49.2% (30/61) vs. 66.7% (72/108), P < 0.05]. Neutrophil count (NEU) and neutrophil percentage (NEU%) in the immunocompromised group were significantly lower than those in the normal immune group. Lymphocyte percentage (LYM%), neutrophil/lymphocyte ratio (NLR), C-reactive protein (CRP), procalcitonin (PCT), APACHE II score, combined shock rate, incidence of immune paralysis, and mortality during hospitalization in the immunocompromised group were significantly higher than those in the normal immune group. Logistic regression analysis showed that NLR, CRP and PCT were risk factors for patients with immunocompromised sepsis (all P < 0.05). The above indicators were used as covariables to construct a Logistic regression equation, that was, Logit (P) = 0.025X1+0.010X2+0.013X3-2.945, where X1, X2 and X3 represent NLR, CRP and PCT respectively. Omnibus test and Hosmer-Lemeshow test show that the model fits well and has certain early warning value.
CONCLUSIONS
Patients with immunocompromised sepsis have more intense inflammatory response, with Gram-negative bacteria being the predominant pathogen, and a higher incidence of Gram-positive bacterial infections and multi-drug resistant infections. The severity of the disease, in-hospital mortality, the incidence of shock and the incidence of immune paralysis after sepsis were significantly higher. NLR, CRP and PCT were independent risk factors for sepsis in immunocompromised hosts. The regression equation constructed based on this may have early warning significance for patients with immunocompromised sepsis.
Humans
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Sepsis/immunology*
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Immunocompromised Host
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Retrospective Studies
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Risk Factors
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Intensive Care Units
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Logistic Models
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Male
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APACHE
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Female
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Middle Aged
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Aged
4.Structure of integrated network image printing system and the maintenance for its common faults
Zongxin FAN ; Yanqing CHEN ; Lei ZHONG ; Guangjun LI
China Medical Equipment 2025;22(2):165-169
The integrated network image printing system can realize rapid transmission and printing for image data,and significantly enhance printing efficiency,which has been a main trend in future development of printing system.In addition,the integrated network image printing system can provide more precise and efficient solution for printing tasks that need process medical imaging,professional photographs or other high-quality images.This study strengthened the process technique on the basis of image denoising and contrast with wavelet transform,which improved the existing integrated network image printing system and tested the improved system.The result indicated that this system can effectively improve image quality.This study summarized the cases of maintaining failure in the application of this system,which target was to provide references for the application of the integrated network image printing systems.
5.Explore the Diagnosis and Treatment Rules of Polygala Tenuifolia Willd Formulas in the Treatment of Alzheimer's Disease Based on Data Mining
Ke HUANG ; Xiaochen XUE ; Yanqing CHEN
Journal of Zhejiang Chinese Medical University 2025;49(7):889-897
[Objective]To explore the patterns of diagnosis and prescription in traditional Chinese medicine(TCM),specifically using Polygala tenuifolia Willd formulas,for the treatment of Alzheimer's disease(AD),grounded in the fundamental theories of TCM.[Methods]The medical case documents containing"Poly gala tenuifolia Willd formula for dementia"were included in China National Knowledge Infrastructure(CNKI),VIP,Wanfang and Gujin Medical Case Cloud Platform databases.Furthermore,an Excel 2019 database was created and subsequently standardized.The database was then mined for patterns related to the administration and utilization of medications,by utilizing the Gujin Medical Case Cloud Platform and the Python programming language.Following standardization,the drug application rules were explored by using the Ancient and Modern Medical Case Cloud Platform and Python.[Results]It employed the Ancient and Modern Medical Case Cloud Platform and Python following standardization.A total of 211 kinds of drugs were recorded in 165 medical records,with warm being the most prevalent,followed by neutral.These drugs were mainly sweet,pungent and bitter in taste,and the main effects of the drugs were attributed to the liver,heart,kidney,spleen and lung meridians,and most of the drugs that were paired with Poly gala tenuifolia Willd had functions of opening the orifices,inducing drainage and seepage of dampness,invigorating blood circulation,removing blood stasis and tonifying the deficiency.Acorus calamus and Poly gala tenuifolia Willd were the core pair of drugs with the common dosage of 10 g and 15 g respectively,and the proportion of the two was mostly 1︰1,2︰3.Acorus calamus-Poly gala tenuifolia Willd was often paired with Poria,commonly used pairs were Radix Rehmanniae Preparata-Cornu Cervi,Ligusticum Chuanxiong-Salviae Miltiorrhizae,the complex network analysis showed that the core composition of treating AD was the prescription of Kaixin Powder which removed ginseng but added with the participation of the Radix Rehmanniae Preparata,Salviae Miltiorrhizae,Ligusticum Chuanxiong and Glycyrrhiza glabra.[Conclusion]In this study,among the formulas containing Polygala tenuifolia Willd for AD,the highest correlation was found between Polygala tenuifolia Willd and Acorus calamus,which was mainly used to replenish deficiency and for diarrhea,and focused on strengthening the spleen,resolving dampness and expelling phlegm,regulating the liver and activating the blood,and benefiting the kidneys and filling in the marrow on the basis of tranquilizing the spirit and opening up the aperture to awaken the mind.The preliminary clarification of the medication law of the formulas containing Polygala tenuifolia Willd for the treatment of AD can provide a basis for the clinical use of medication and the development of new prescriptions.
6.Analysis of gut microbiota characteristics in elderly patients with sarcopenic obesity based on 16S rRNA sequencing
Ling WANG ; Xiangfeng HE ; Yanqing REN ; Yanping SONG ; Lin MA ; Nan CHEN
Chinese Journal of Geriatrics 2025;44(8):1114-1121
Objective:To explore the characteristics of gut microbiota changes in individuals with Sarcopenic Obesity(SO)based on 16S rRNA sequencing.Methods:This cross-sectional study was conducted in Chongming District, Shanghai from April to November 2021.Fecal samples were collected from 20 elderly SO patients (case group)and 40 elderly non-SO individuals(control group)for 16S rRNA sequencing in order to analyze the diversity, structural composition, and species differences of gut microbiota, and then to predict the differential metabolic functions of the gut microbiota.Results:A total of 60 subjects were included.The case group consisted of 20 individuals(15 males and 5 females)with an average age of 73.15 ± 4.09 years; the control group included 40 individuals(20 males and 20 females)with an average age of 71.20 ± 4.12 years.The α-diversity analysis revealed that the richness indices ACE and Chao 1 of the case group were significantly lower than those of the control group( P<0.05), while the diversity indices Shannon and Simpson showed a trend of being lower in the case group, but the differences were not statistically significant( P>0.05). Principal coordinate analysis based on the Unweighted-unifrac distance metric demonstrated a statistically significant difference in β-diversity between the two groups( P=0.003). The structure and composition of the gut microbiota in the case group were altered, with a significant reduction in the relative abundance of the Blautia genus in the case group( P<0.05). LEfSe analysis identified 5 and 16 enriched microbial species in the case and control groups, respectively (Linear Discriminant Analysis score >2, P<0.05). Additionally, PICRUSt2 functional prediction revealed significant differences( P<0.05)in metabolic pathways between the two groups, including quorum sensing, fat digestion and absorption, and folate biosynthesis. Conclusions:The gut microbiota in elderly SO patients is disordered, mainly manifested as a decrease in diversity and characteristic changes in structural composition, as well as a reduction in the abundance of the beneficial bacterium Blautia.The Progression of SO is closely associated with gut microbiota metabolic disturbances, and targeting the gut microbiota is expected to become a novel therapeutic approach for SO.
7.Anemia and iron metabolism characteristics in pregnant women with different genotypes of thalassemia: a retrospective cohort study
Linqing GUO ; Junqing LONG ; Lin KONG ; Dongru LI ; Yanqing TANG ; Xiaofeng HUANG ; Hui CHEN ; Yuqin QIN ; Yanyan LIANG ; Hongwei WEI
Chinese Journal of Perinatal Medicine 2025;28(5):363-370
Objective:To investigate the anemia conditions and characteristics of iron metabolism during different stages of pregnancy in women with different genotypes of thalassemia.Methods:This cohort study selected 3 303 singleton pregnant women who underwent regular prenatal examinations and genetic tests of thalassemia and were delivered at Maternal & Child Health Hospital of Guangxi Zhuang Autonomous Region from January 2019 to December 2023. According to the results of thalassemia gene testing, the women were divided into groups: those without thalassemia genes served as the control group (1 539 cases), and those with thalassemia genes (1 764 cases) were further divided based on genotype into the -α/αα group (326 cases), --/αα or -α/-α group (649 cases), point mutation α-thalassemia group (201 cases), β 0-thalassemia group (368 cases), β +-thalassemia group (91 cases), and α combined with β-thalassemia group (129 cases). Hemoglobin (Hb) and serum ferritin (SF) levels were measured in the first, second, and third trimester of pregnancy. Differences in anemia and iron reserves among the groups at different pregnancy stages were compared using repeated measures analysis of variance, LSD test, Kruskal-Wallis rank-sum test, and Bonferroni correction. Results:Compared to the first trimester, Hb levels decreased in the second and third trimester across all groups (LSD test, all P<0.05), and the severity of anemia increased (Bonferroni correction, all P<0.017). The severity of anemia varied among the groups at the same pregnancy stage ( Hfirst trimester=918.20, Hsecond trimester=1 224.50, Hthird trimester=980.19; all P<0.001), and Hb levels also differed ( Ffirst trimester=282.54, Fsecond trimester=352.31, Fthird trimester=239.02; all P<0.001). The β 0-thalassemia group had higher rates of moderate anemia in the first, second, and third trimester of pregnancy [38.6% (142/368), 85.3% (314/368), and 73.6% (271/368)] compared to other groups (Bonferroni correction, all P<0.002), and lower Hb levels [(102.1±8.9), (92.0±7.3), and (94.6±7.7) g/L] than other groups (LSD test, all P<0.05). As pregnancy progresses, SF levels in each group of pregnant women gradually decreased (LSD test, all P<0.05), and the degree of iron deficiency worsened (Bonferroni correction, all P<0.05). The iron deficiency rate in thalassemia pregnant women during the third trimester ranges from 21.5% (79/368) to 46.0% (150/326). The degree of iron deficiency varies among groups within the same gestational period ( Hfirst trimester=79.13, Hsecond trimester=203.98, Hthird trimester=130.55; all P<0.001), and SF levels also differ ( Ffirst trimester=17.28, Fsecond trimester=44.60, Fthird trimester=31.87; all P<0.001). Among them, the β 0-thalassemia group had the lowest iron deficiency rates in the second, and third trimesters [9.8% (36/368), and 21.5% (79/368)] (Bonferroni correction, all P<0.002). SF levels in the β 0-thalassemia and β +-thalassemia groups were higher than those in other groups during each gestational period (LSD test, all P<0.05). Conclusions:Pregnant women with thalassemia may experience varying degrees of iron deficiency during pregnancy, with the severity of iron deficiency and anemia increasing with gestational age. The degree of iron deficiency and anemia during pregnancy varies among pregnant women with different genotypes of thalassemia. Clinically, individualized management should be provided for pregnant women with thalassemia based on their genotypes, with dynamic monitoring of anemia and iron metabolism changes.
8.Current status of water management for terminal rinsing of digestive endoscope in 104 medical institutions in Fujian Province
Lijun QIU ; Xianbin GUO ; Yanyi GUO ; Xuan LIN ; Yanqing ZHANG ; Yufang CHEN ; Qiaomei WANG ; Yudai CHEN
Chinese Journal of Nosocomiology 2025;35(20):3162-3167
OBJECTIVE To investigate the current status of water management for terminal rinsing of digestive en-doscope in medical institutions in Fujian Province,and to provide reference for improving regional quality control standards.METHODS An electronic questionnaire survey was conducted from Jul.2024 to Aug.2024 through convenient sampling in secondary and above hospitals of 9 prefecture-level cities in Fujian Province.The survey covered topics such as water treatment system configuration,maintenance and water quality monitoring.RESULTS A total of 108 questionnaires were distributed and 104 valid questionnaires were collected,with an effec-tive response rate of 96.30%.The survey revealed that 78.85%(82/104)of the hospitals adopted separate water supply for each department,and 82.69%used purified water for terminal rinsing.Only 19.23%installed the final filter membrane at the water outlet.In addition,66.35%of the hospitals did not specify the service life of the wa-ter supply pipeline,and the pipeline disinfection implementation rate was 60.58%,but 31.75%of them had ir-regular disinfection frequencies,with chlorine-based disinfectants(50.79%)and peracetic acid(34.92%)being the main disinfectants.The regular conductivity monitoring rate was 47.12%,and the microbial monitoring cov-erage rate reached 90.38%,with the monitoring frequency mainly being once every quarter(60.64%),but only 20.21%used R2A medium,and 12.77%adopted the membrane filtration method for inoculation.Tertiary hospi-tals were superior to secondary hospitals in terms of film membrane pore size pass rate(87.50%vs.56.86%),pipeline disinfection implementation rate(71.43%vs.50.91%)and advanced detection method application(P<0.05).CONCLUSIONS There are issues in the management of water used for terminal rinsing of digestive endo-scopes in Fujian Province,including non-standard equipment maintenance,inconsistent monitoring methods and insufficient awareness among management personnel.It is recommended to enhance management quality by optimizing the water treatment system setup,establishing standardized monitoring procedures and strengthening professional training for personnel.
9.Changing resistance profiles of Haemophilus influenzae and Moraxella catarrhalis isolates in hospitals across China:results from the CHINET Antimicrobial Resistance Surveillance Program,2015-2021
Hui FAN ; Chunhong SHAO ; Jia WANG ; Yang YANG ; Fupin HU ; Demei ZHU ; Yunsheng CHEN ; Qing MENG ; Hong ZHANG ; Chun WANG ; Fang DONG ; Wenqi SONG ; Kaizhen WEN ; Yirong ZHANG ; Chuanqing WANG ; Pan FU ; Chao ZHUO ; Danhong SU ; Jiangwei KE ; Shuping ZHOU ; Hua ZHANG ; Fangfang HU ; Mei KANG ; Chao HE ; Hua YU ; Xiangning HUANG ; Yingchun XU ; Xiaojiang ZHANG ; Wenen LIU ; Yanming LI ; Lei ZHU ; Jinhua MENG ; Shifu WANG ; Bin SHAN ; Yan DU ; Wei JIA ; Gang LI ; Jiao FENG ; Ping GONG ; Miao SONG ; Lianhua WEI ; Xin WANG ; Ruizhong WANG ; Hua FANG ; Sufang GUO ; Yanyan WANG ; Dawen GUO ; Jinying ZHAO ; Lixia ZHANG ; Juan MA ; Han SHEN ; Wanqing ZHOU ; Ruyi GUO ; Yan ZHU ; Jinsong WU ; Yuemei LU ; Yuxing NI ; Jingrong SUN ; Xiaobo MA ; Yanqing ZHENG ; Yunsong YU ; Jie LIN ; Ziyong SUN ; Zhongju CHEN ; Zhidong HU ; Jin LI ; Fengbo ZHANG ; Ping JI ; Yunjian HU ; Xiaoman AI ; Jinju DUAN ; Jianbang KANG ; Xuefei HU ; Xuesong XU ; Chao YAN ; Yi LI ; Shanmei WANG ; Hongqin GU ; Yuanhong XU ; Ying HUANG ; Yunzhuo CHU ; Sufei TIAN ; Jihong LI ; Bixia YU ; Cunshan KOU ; Jilu SHEN ; Wenhui HUANG ; Xiuli YANG ; Likang ZHU ; Lin JIANG ; Wen HE ; Chunlei YUE
Chinese Journal of Infection and Chemotherapy 2025;25(1):30-38
Objective To investigate the distribution and antimicrobial resistance profiles of clinically isolated Haemophilus influenzae and Moraxella catarrhalis in hospitals across China from 2015 to 2021,and provide evidence for rational use of antimicrobial agents.Methods Data of H.influenzae and M.catarrhalis strains isolated from 2015 to 2021 in CHINET program were collected for analysis,and antimicrobial susceptibility testing was performed by disc diffusion method or automated systems according to the uniform protocol of CHINET.The results were interpreted according to the CLSI breakpoints in 2022.Beta-lactamases was detected by using nitrocefin disk.Results From 2015 to 2021,a total of 43 642 strains of Haemophilus species were isolated,accounting for 2.91%of the total clinical isolates and 4.07%of Gram-negative bacteria in CHINET program.Among the 40 437 strains of H.influenzae,66.89%were isolated from children and 33.11%were isolated from adults.More than 90%of the H.influenzae strains were isolated from respiratory tract specimens.The prevalence of β-lactamase was 53.79%in H.influenzae strains.The H.influenzae strains isolated from children showed higher resistance rate than the strains isolated from adults.Overall,779 strains of H.influenzae did not produce β-lactamase but were resistant to ampicillin(BLNAR).Beta-lactamase-producing strains showed significantly higher resistance rates to these antimicrobial agents than the β-lactamase-nonproducing strains.Of the 16 191 M.catarrhalis strains,80.06%were isolated from children and 19.94%isolated from adults.M.catarrhalis strains were mostly susceptible to both amoxicillin-clavulanic acid and cefuroxime,evidenced by resistance rate lower than 2.0%.Conclusions The emergence of antibiotic-resistant H.influenzae due to β-lactamase production poses a challenge for clinical anti-infective treatment.Therefore,it is very important to implement antibiotic resistance surveillance for H.influenzae and guide rational antibiotic use.All local clinical microbiology laboratories should actively improve antibiotic susceptibility testing and strengthen antibiotic resistance surveillance for H.influenzae.
10.Mechanism by which hydroxysafflor yellow A alleviates demyelination in cuprizone mice
Ying CHEN ; Jian LIU ; Yajie LIANG ; Yanqing LI ; Lijuan SONG ; Jianjun HUANG ; Jiezhong YU ; Qing WANG ; Cungen MA
Chinese Journal of Tissue Engineering Research 2025;29(25):5311-5319
BACKGROUND:In the occurrence and development of demyelinating diseases of the central nervous system,neuroinflammation caused by microglia is the main pathological feature,so inhibiting the inflammatory response is very important to alleviate demyelination.Hydroxysafflor yellow A can protect the blood-brain barrier,inhibit neuronal apoptosis,and improve neurological function.OBJECTIVE:To explore the mechanism of hydroxysafflor yellow A inhibiting bicyclohexanone oxalyl dihydrazone-induced demyelination in mice.METHODS:(1)In vivo:Thirty healthy male C57BL/6 mice were randomly divided into three groups:normal group,cuprizone group,and hydroxysafflor yellow A group.The mice in the cuprizone group and the hydroxysafflor yellow A group were fed with 0.2%cuprizone diet for 6 weeks to establish mouse models of demyelination.The mice in the normal group were fed with normal diet.At the end of the 4th week,the mice in the hydroxysafflor yellow A group were intraperitoneally injected with hydroxysafflor yellow A 20 mg/kg per day.The mice in the normal and cuprizone groups were intraperitoneally injected with normal saline for 2 weeks.The behavioral changes of mice were evaluated by open field test and elevated plus maze test.The loss of myelin sheath in corpus callosum was detected by black gold staining,myelin basic protein and degraded myelin basic protein immunofluorescence staining.The activation of microglia and the expression of inflammatory factors were detected by I ba-1 immunofluorescence staining and ELISA,respectively.The protein expression levels of Toll-like receptor 4,myeloid differentiation factor 88,and nuclear factor κB p65 in the brain of mice in each group were detected by western blot assay.(2)In vitro experiment:The inflammation model of BV2 microglia was established by lipopolysaccharide induction.BV2 cells were divided into normal group,lipopolysaccharide group(1 μg/mL),and lipopolysaccharide(1 μg/mL)+hydroxysafflor yellow A(25 μmol/L)group.The expression levels of tumor necrosis factor α and interleukin 6 in the supernatant were detected by ELISA.RESULTS AND CONCLUSION:(1)Compared with the normal group,the mice in the cuprizone group had severe anxiety,abnormal autonomic movement ability,and a large amount of myelin sheath loss in the corpus callosum.The average fluorescence intensity of myelin basic protein was significantly reduced,and the average fluorescence intensity of degraded myelin basic protein was significantly increased.The number of lba1+microglia increased,the contents of interleukin 1β,tumor necrosis factor α,and interleukin 6 in the brain increased,and the protein expression levels of Toll-like receptor 4,myeloid differentiation factor 88,and nuclear factor κB p65 increased significantly.The above symptoms and indexes of mice were reversed after hydroxysafflor yellow A treatment.(2)Hydroxysafflor yellow A significantly inhibited the expression of inflammatory factors such as tumor necrosis factor α,and interleukin 6 induced by lipopolysaccharide in BV2 microglia.(3)The above results demonstrate that hydroxysafflor yellow A can significantly improve cuprizone-induced demyelination in mice.The mechanism of action is related to the inhibition of microglial activation-mediated inflammatory response through the Toll-like receptor 4/myeloid differentiation factor 88/nuclear factor κB p65 signaling pathway.

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