1.Effect of Ningying Formula (宁瘿方) Combined with Low-Dose Antithyroid Drugs on Reducing Relapse Risk for Patients with Graves' Hyperthyroidism in Remission Stage:A Retrospective Cohort Study
Yuqin HUANG ; Mingshuai ZHANG ; Shijian LIU ; Feng TAO ; Yi CHEN
Journal of Traditional Chinese Medicine 2026;67(1):45-52
ObjectiveTo evaluate the effect of Ningying Formula (宁瘿方) combined with low-dose antithyroid drugs (ATDs) on the relapse risk for patients with Graves' hyperthyroidism (GH) during the remission phase, and to analyze the related factors between GH relapse and thyrotropin receptor antibody (TRAb) negativity, so as to provide evidence for the standardized management of GH in remission stage. MethodsA single-center retrospective cohort study was conducted, including 269 GH patients in the remission stage. After propensity score matching (PSM), 102 matched pairs (204 patients) were established. The control group received low-dose ATDs as maintenance therapy, while the exposure group received the core Ningying Formula in addition to low-dose ATDs. The primary outcome was the GH recurrence rate; the secondary outcome was the thyrotropin receptor antibody (TRAb) negativity rate (TRAb<1.75 IU/L). Safety outcomes included treatment-related adverse events. Differences between groups were assessed using Cox regression models and Kaplan-Meier curves, with sensitivity analysis performed using inverse probability of treatment weighting (IPTW). ResultsThe median follow-up in the matched cohort was 28.07 months. Regarding the GH recurrence outcome, the recurrence rate in the exposure group (18/102, 17.6%) was significantly lower than that in the control group (31/102, 30.4%; χ²=4.539, P=0.033); regarding the TRAb negativity outcome, the TRAb negativity rate in the exposure group (50/102, 49.0%) was significantly higher than that in the control group (23/102, 22.5%; χ²=15.551, P<0.001). Multivariate Cox regression analysis for recurrence showed that Ningying Formula treatment reduced the risk of recurrence [HR=0.324, 95%CI(0.170, 0.617), P<0.001]. Male [HR=2.209, 95%CI(1.079, 4.520), P=0.030], higher initial TRAb level [per 1 IU/L increase: HR=1.033, 95%CI(1.003, 1.064), P=0.032], and larger thyroid volume [per 1 ml increase: HR=1.045, 95%CI(1.003, 1.088), P=0.035] were identified as independent risk factors for recurrence; multivariate Cox regression analysis for TRAb negativity indicated that Ningying Formula treatment promoted TRAb negativity [HR=1.826, 95%CI(1.091, 3.056), P=0.022], while a higher initial TRAb level was associated with a lower probability of negativity [HR=0.974, 95%CI(0.950, 0.998), P=0.032]. Survival analysis showed significant differences in relapse rate between groups (Log-Rank P=0.003) and in TRAb outcomes (Log-Rank P=0.034). The incidence of treatment-related adverse events was similar between groups (P=0.757). The IPTW sensitivity analysis was consistent with the primary analysis, indicating robust results. ConclusionThe Ningying Formula combined with low-dose ATDs can significantly reduce the risk of recurrence and can improve the TRAb negativity rate in GH patients during the remission stage, without increasing common adverse events, making it an optional strategy for reducing relapse risk during remission. Male gender, higher baseline TRAb level, and larger thyroid volume indicate a higher risk of recurrence, warranting focused follow-up and stratified management.
2.Investigation and analysis of radioactivity detection capacity for food and drinking water in municipal and county-level disease control and prevention institutions in Shandong Province
Xinyun WANG ; Tao ZHOU ; Wei ZHANG ; Ke YANG ; Yi LIU ; Jianwei LIU ; Chundong XIA ; Bo TANG ; Xianpeng ZHANG
Chinese Journal of Radiological Health 2026;35(3):325-330
Objective To investigate the capacity of municipal and county-level Centers for Disease Control (CDC) in Shandong Province for γ radionuclides in food as well as gross α and gross β in drinking water, and to provide evidence for strengthening radiological laboratories. Method Data regarding radioactive detection capacity were collected from 16 prefecture-level cities and 136 county-level CDCs. Chi-square test and Fisher's exact tests were used to compare capacity differences across regions and between cities with and without nuclear power plants. Correlation analysis was used to evaluate the spatial equity of gross α and gross β detection capacity for drinking water. Result The detection capacity of gross α and gross β in drinking water varied significantly among counties (χ2=81.026, P<0.001),no significant difference was found between coastal and inland cities (χ2=2.021,P>0.155); Cities with nuclear power plants showed better detection capacity (χ2=20.253,P<0.01). The detection capacity for γ radionuclides in food was primarily concentrated in the prefecture-level cities that host nuclear power plants. Conclusion The overall detection capacity for radioactivity in drinking water was acceptable but spatially uneven. The capacity for monitoring radioactive contamination in food was generally weak. It is necessary to strengthen capacity building at the grassroots level.
3.Guidelines for the perioperative diagnosis and treatment of oncogene-driven non-small cell lung cancer (2026)
Weidong WANG ; Yongbin LIN ; Hui TIAN ; Gaofeng LI ; Shun XU ; Yongde LIAO ; Haitao MA ; Junfeng LIU ; Chundong GU ; Xiaolong YAN ; Shumin WANG ; Daqiang SUN ; Jianyang LIU ; Tao XUE ; Shaohua MA ; Zhigang LI ; Shuanghu YUAN ; Gen LIN ; Ling CAI ; Jianping ZHOU ; Wenzhao ZHONG ; Naixin LIANG ; Yi HAN ; Junfeng WANG ; Weidong ZHANG ; Xin WANG ; Lianjuan CHEN ; Lunxu LIU ; Xiuyi ZHI ; Lanjun ZHANG
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2026;33(09):1337-1353
Lung cancer constitutes the most prevalent and lethal malignant tumor in China. Approximately 85% of lung cancer diagnoses correspond to the non-small cell histological subtype [non-small cell lung cancer (NSCLC)]. Despite surgery being the mainstay for early-stage disease, postoperative recurrence remains high and adjuvant chemotherapy offers limited benefit. In recent years, targeted therapy has demonstrated substantial advantages in driver mutation-positive NSCLC. To this end, the Lung Cancer Medical Education Committee of the Chinese Medical Education Association developed guidelines based on a systematic review of evidence through November 2025, using the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) approach and a modified Delphi method. Focusing on epidermal growth factor receptor (EGFR) and anaplastic lymphoma kinase (ALK), and addressing ROS proto-oncogene 1 (ROS1), B-Raf proto-oncogene serine/threonine kinase (BRAF) V600E mutation, and mesenchymal-epithelial transition factor (MET) exon 14 (METex14) skipping, the guideline covers molecular testing, neoadjuvant/adjuvant therapy, perioperative strategies, minimal residual disease monitoring, and postoperative surveillance. It defines testing requirements, specifies stage-directed and subtype-specific treatments, and standardizes minimal residual disease monitoring. These recommendations emphasize precision and feasibility to improve survival and quality of life.
4.Progress of fecal microbiota transplantation in the treatment of lung cancer
Miao LIU ; Li XIONG ; Shan TAO ; Yi WU ; Weiwei KE ; Yuying LIU ; Yu XU
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2026;33(09):1495-1500
Lung cancer is one of the most lethal cancers, and the overall survival rate of lung cancer patients is very low. With the increasing research on lung cancer, the critical role of intestinal flora in lung cancer treatment has been gradually discovered. Among the various therapeutic approaches targeting the intestinal flora, fecal microbiota transplantation (FMT) is considered as a potential strategy to treat lung cancer by interfering with the homeostasis of the intestinal flora. FMT can improve the efficacy of lung cancer treatment and attenuate the side effects associated with immunotherapy, chemotherapy, and radiotherapy by remodeling the microbial composition, modulating the metabolites, and activating immune responses. The aim of this paper is to discuss the current status and potential mechanisms of FMT in lung cancer treatment, and to provide a new strategy for regulating the intestinal flora to enhance the prevention and treatment of lung cancer.
5.Protective Effect of Huayu Jiedu Prescription Against PC12 Cell Damage Induced by Combination of NETs and OGD
Wuchaonan LIU ; Ruiyu HUANG ; Qianru ZENG ; Mengge ZHANG ; Yunhao YI ; Tao GAO ; Dingxiang LI ; Yihui DENG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(21):120-130
ObjectiveTo investigate the protective effect of Huayu Jiedu prescription against PC12 cell damage induced by a combination of neutrophil extracellular traps (NETs) and oxygen-glucose deprivation (OGD). MethodsFirst, dimethyl sulfoxide (DMSO) was used to induce the differentiation of the human promyelocytic leukemia cell line (HL-60) into neutrophil-like cells (dHL-60), and cell differentiation was assessed through Giemsa staining and flow cytometry. Next, phorbol myristate (PMA) was used to induce the formation of NETs in dHL-60 cells. The formation of NETs was assessed via SYTOX Green staining, and NETs were extracted by low-speed centrifugation. Finally, the NETs prepared through the conditioned medium were combined with OGD to induce a high-differentiation PC12 neuronal cell damage model through the co-culture method. This model was treated with the Huayu Jiedu prescription-containing serum. Cells were randomly allocated into a normal control group, a model (NETs + OGD) group, a traditional Chinese medicine (NETs + OGD + 5% Huayu Jiedu prescription-containing serum) group, and a NETosis inhibitor (100 mg·L-1 DNase I + NETs + OGD) group. The cell counting kit-8 (CCK-8) assay was used to evaluate cell viability and screen the optimal intervention concentrations of NETs and Huayu Jiedu Formula-containing serum, as well as the optimal intervention time for OGD. Enzyme-linked immunosorbent assay (ELISA) was adopted to measure the levels of myeloperoxidase-DNA complexes (MPO-DNA), citrullinated histone H3 (CitH3), and neutrophil elastase (NE). Western blot was employed to quantify the protein levels of CitH3 and cleaved Caspase-3. Terminal-deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling assay (TUNEL) staining and flow cytometry were employed to assess neuronal apoptosis. ResultsCompared with those in the normal control group, cells in the model group successfully differentiated into dHL60 cells after DMSO induction. Wright-Giemsa staining revealed that the cells in the model group had disappeared nucleoli, distinct reniform and lobulated changes of nuclei, highly condensed chromatin, and the cytoplasm containing pale purple fine granules. Flow cytometry showed that the mean fluorescence intensity (MFI) of CD11b in the model group was enhanced (P<0.01). Compared with those in the normal control group, dHL60 cells in the model group successfully generated NETs after PMA induction. SYTOX Green staining revealed loss of cell membrane integrity, with chromatin released from the cytoplasm to form abundant extracellular, cloud-like fibrillar structures, and a marked increase in fluorescence intensity (P<0.01). Through the CCK-8 assay for assessing the viability of highly differentiated PC12 cells, the optimal concentration for NETs was determined as 1 000 ng·L-1, the optimal concentration of Huayu Jiedu formula-containing serum as 5%, and the optimal duration for OGD as 2 h. Compared with the normal control group, the model group showed elevated levels of MPO-DNA, CitH3, and NE (P<0.01) and upregulated protein levels of CitH3 and cleaved Caspase-3 (P<0.01). Furthermore, TUNEL staining revealed an increased proportion of apoptotic cells (P<0.01) and flow cytometry showed an increased apoptosis rate (P<0.01) in the model group. Compared with the model group, the Huayu Jiedu formula-containing serum group and the NETosis inhibitor group exhibited declined levels of MPO-DNA, CitH3, and NE (P<0.05,P<0.01) and downregulated protein levels of CitH3 and cleaved Caspase-3 (P<0.01). In addition, TUNEL staining showed a decrease in the proportion of apoptotic cells (P<0.01), and flow cytometry revealed a decrease in the apoptosis rate (P<0.01). ConclusionHuayu Jiedu prescription may exert a protective effect against ischemic neuronal damage by inhibiting NET formation or alleviating NET-induced neurotoxicity
6.Protective Effect of Huayu Jiedu Prescription Against PC12 Cell Damage Induced by Combination of NETs and OGD
Wuchaonan LIU ; Ruiyu HUANG ; Qianru ZENG ; Mengge ZHANG ; Yunhao YI ; Tao GAO ; Dingxiang LI ; Yihui DENG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(21):120-130
ObjectiveTo investigate the protective effect of Huayu Jiedu prescription against PC12 cell damage induced by a combination of neutrophil extracellular traps (NETs) and oxygen-glucose deprivation (OGD). MethodsFirst, dimethyl sulfoxide (DMSO) was used to induce the differentiation of the human promyelocytic leukemia cell line (HL-60) into neutrophil-like cells (dHL-60), and cell differentiation was assessed through Giemsa staining and flow cytometry. Next, phorbol myristate (PMA) was used to induce the formation of NETs in dHL-60 cells. The formation of NETs was assessed via SYTOX Green staining, and NETs were extracted by low-speed centrifugation. Finally, the NETs prepared through the conditioned medium were combined with OGD to induce a high-differentiation PC12 neuronal cell damage model through the co-culture method. This model was treated with the Huayu Jiedu prescription-containing serum. Cells were randomly allocated into a normal control group, a model (NETs + OGD) group, a traditional Chinese medicine (NETs + OGD + 5% Huayu Jiedu prescription-containing serum) group, and a NETosis inhibitor (100 mg·L-1 DNase I + NETs + OGD) group. The cell counting kit-8 (CCK-8) assay was used to evaluate cell viability and screen the optimal intervention concentrations of NETs and Huayu Jiedu Formula-containing serum, as well as the optimal intervention time for OGD. Enzyme-linked immunosorbent assay (ELISA) was adopted to measure the levels of myeloperoxidase-DNA complexes (MPO-DNA), citrullinated histone H3 (CitH3), and neutrophil elastase (NE). Western blot was employed to quantify the protein levels of CitH3 and cleaved Caspase-3. Terminal-deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling assay (TUNEL) staining and flow cytometry were employed to assess neuronal apoptosis. ResultsCompared with those in the normal control group, cells in the model group successfully differentiated into dHL60 cells after DMSO induction. Wright-Giemsa staining revealed that the cells in the model group had disappeared nucleoli, distinct reniform and lobulated changes of nuclei, highly condensed chromatin, and the cytoplasm containing pale purple fine granules. Flow cytometry showed that the mean fluorescence intensity (MFI) of CD11b in the model group was enhanced (P<0.01). Compared with those in the normal control group, dHL60 cells in the model group successfully generated NETs after PMA induction. SYTOX Green staining revealed loss of cell membrane integrity, with chromatin released from the cytoplasm to form abundant extracellular, cloud-like fibrillar structures, and a marked increase in fluorescence intensity (P<0.01). Through the CCK-8 assay for assessing the viability of highly differentiated PC12 cells, the optimal concentration for NETs was determined as 1 000 ng·L-1, the optimal concentration of Huayu Jiedu formula-containing serum as 5%, and the optimal duration for OGD as 2 h. Compared with the normal control group, the model group showed elevated levels of MPO-DNA, CitH3, and NE (P<0.01) and upregulated protein levels of CitH3 and cleaved Caspase-3 (P<0.01). Furthermore, TUNEL staining revealed an increased proportion of apoptotic cells (P<0.01) and flow cytometry showed an increased apoptosis rate (P<0.01) in the model group. Compared with the model group, the Huayu Jiedu formula-containing serum group and the NETosis inhibitor group exhibited declined levels of MPO-DNA, CitH3, and NE (P<0.05,P<0.01) and downregulated protein levels of CitH3 and cleaved Caspase-3 (P<0.01). In addition, TUNEL staining showed a decrease in the proportion of apoptotic cells (P<0.01), and flow cytometry revealed a decrease in the apoptosis rate (P<0.01). ConclusionHuayu Jiedu prescription may exert a protective effect against ischemic neuronal damage by inhibiting NET formation or alleviating NET-induced neurotoxicity
7.Influencing factors for high-frequency hearing loss among noise-exposed workers in Huzhou City
Journal of Preventive Medicine 2026;38(4):419-422
Objective:
To investigate the prevalence of high-frequency hearing loss and analyze its influencing factors among noise-exposed workers in Huzhou City, Zhejiang Province, so as to provide evidence for effective prevention and control of occupational noise hazards.
Methods:
Individual case data of in-service noise-exposed workers undergoing occupational health examinations in Huzhou City in 2023 were collected through the Occupational Disease and Health Hazard Factors Monitoring Information System of the China Disease Prevention and Control Information System. Data included gender, age, and results of binaural high-frequency average hearing threshold. High-frequency hearing loss was defined as binaural high-frequency average hearing threshold (at 3 000, 4 000, and 6 000 Hz) ≥40 dB. Multivariable logistic regression model was used to analyze influencing factors for high-frequency hearing loss among noise-exposed workers.
Results:
A total of 73 550 noise-exposed workers were included, of whom 54 610 (74.25%) were males and 18 940 (25.75%) were females. The median age was 44.04 (interquartile range, 0.16) years. The median length of service was 5.38 (interquartile range, 0.07) years. A total of 7 556 cases of high-frequency hearing loss were identified, with a detection rate of 10.27%. Multivariable logistic regression analysis showed that gender (male, OR=2.541, 95%CI: 2.370-2.724), length of service (6-<10 years, OR=1.208, 95%CI: 1.135-1.285; ≥10 years, OR=1.351, 95%CI: 1.266-1.441), region (Nanxun District, OR=2.069, 95%CI: 1.903-2.249; Deqing County, OR=1.558, 95%CI: 1.450-1.673; Changxing County, OR=1.439, 95%CI: 1.349-1.534; Anji County, OR=1.214, 95%CI: 1.120-1.316), enterprise scale (large, OR=0.485, 95%CI: 0.416-0.565; medium, OR=0.440, 95%CI: 0.381-0.509; small, OR=0.608, 95%CI: 0.530-0.698), industry category (manufacturing, OR=1.088, 95%CI: 1.025-1.155), and economic type (private/other, OR=1.555, 95%CI: 1.174-2.059) were influencing factors for high-frequency hearing loss among noise-exposed workers.
Conclusions
The detection rate of high-frequency hearing loss among noise-exposed workers in Huzhou City is relatively high, and is associated with gender, length of service, region, enterprise scale, industry category, and economic type. Strengthened occupational health monitoring and individual protection are warranted.
8.Clinical characteristics and outcomes of elderly patients with stage Ⅰ diffuse large B-cell lymphoma: a study by the Jiangsu Cooperative Lymphoma Group (JCLG)
Yi XIA ; Jing HE ; Weiying GU ; Tao JIA ; Tingxun LU ; Yongle LI ; Jiahao ZHOU ; Bingzong LI ; Haiying HUA ; Ping LIU ; Yuqing MIAO ; Yuexin CHENG ; Xiaoyan XIE ; Yunping ZHANG ; Wenzhong WU ; Zhuxia JIA ; Xuzhang LU ; Chunling WANG ; Liang YU ; Min XU ; Jinning SHI ; Weifeng CHEN ; Wanchuan ZHUANG ; Zhen QIAN ; Jun QIAN ; Haiwen NI ; Yifei CHEN ; Qiudan SHEN ; Jianyong LI ; Wenyu SHI
Chinese Journal of Internal Medicine 2025;64(6):504-513
Objective:To summarize the clinical characteristics of elderly patients with stage Ⅰ diffuse large B-cell lymphoma (DLBCL) and analyze the factors associated with prognosis.Methods:A case series study was conducted by retrospectively collecting clinical data from patients aged over 60 years with newly diagnosed stage Ⅰ DLBCL across 20 medical centers in Jiangsu Province, China, between June 2010 and April 2023. The involved site, classification and treatment plan were summarized. The primary endpoints were progression-free survival (PFS) and overall survival (OS). Statistical analyses were performed using the Kaplan-Meier method, and Cox regression model.Results:The study included 255 patients with a median age of 69 years, of whom 130 (51.0%) were male, 66 (25.9%) were aged ≥75 years and 26 (10.1%) had a high Charlson Comorbidity Index (CCI) score of ≥2. Extranodal involvement was observed in 163 (63.9%) patients, with the stomach (37.4%, 61/163), intestine (19.0%, 31/163), testes (11.0%, 18/163), and breast (7.4%, 12/163) being the most frequently affected sites. The non-germinal center B-cell (non-GCB) subtype was prevalent in 63.7% of patients (142/223), with no significant difference between the nodal and extranodal groups ( P=0.681). Furthermore, 73.9% (184/249) and 11.7% (29/249) of patients received the R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, prednisone) and R-miniCHOP regimen, respectively. The overall 3-year PFS rate was 81.5%, and the 3-year OS rate was 85.6%. Patients aged ≥75 years ( HR=2.910, 95% CI 1.565-5.408, P=0.001) and/or with a CCI score ≥2 ( HR=2.324, 95% CI 1.141-4.732, P=0.020) had a significantly poorer PFS. Incorporating age ≥75 years and CCI score ≥2 into the stage-modified international prognostic index (sm-IPI) can better stratify the prognosis of elderly patients with stage Ⅰ DLBCL. The 3-year PFS rate was 48.7% in the high-risk group versus 85.7% in the low-risk group ( P<0.001). Conclusions:Our findings show that the elderly patients with stage Ⅰ DLBCL were predominantly characterized by extranodal involvement (particularly in the stomach and intestinal tract) and non-GCB subtype. Age ≥75 years and CCI ≥2 were identified as independent prognostic factors. The newly established sm-IPI-75-CCI incorporating these factors demonstrated superior prognostic discrimination compared to conventional risk assessment systems.
9.Military cross-cutting symptom scale and its reliability and validity
Xiaoliang WEI ; Tao ZHANG ; Kaitian SHI ; Yi ZHANG ; Yonghai BAI ; Taosheng LIU
Academic Journal of Naval Medical University 2025;46(6):817-823
Objective To develop a military cross-cultural symptom scale(MCCSS)and evaluate its reliability and validity.Methods The dimensions and items of the scale were determined through literature analysis,questionnaire surveys,group discussions,expert consultations,and pre-experiments.Cluster sampling was employed to collect data from the participants to examine the psychometric properties of the scale.Results The MCCSS comprised 38 items across 9 factors:depression,anxiety,somatic symptoms,misanthropic tendency,sleep problems,compulsions,psychotic symptoms,stress trauma,and defensiveness.Item analysis revealed that the 37 items(except 1 forced-choice item)exhibited correlations from 0.538 to 0.875 with the total scale score(all P<0.01),with critical ratios ranging from 5.190 to 28.149,indicating good discriminative power.The Cronbach's α coefficients for the total scale and subscales ranged from 0.825 to 0.972,and the Spearman-Brown split-half reliability coefficients ranged from 0.747 to 0.955.The results of confirmatory factor analysis showed that x2/df=3.419,standardized root mean square residual=0.033,root mean square error of approximation=0.073,normed fit index=0.868,incremental fit index=0.903,Tucker-Lewis index=0.887,comparative fit index=0.902,and the scale's first-order 9-factor model fit well.The loads of each item on the factor to which it belonged ranged from 0.597 to 0.954(all P<0.01).The correlation coefficients between the scale and the scale for criterion-related validity ranged from 0.392 to 0.773(all P<0.01),and the correlation coefficients between the scale and the scale for convergent validity ranged from 0.257 to 0.519(all P<0.01).Conclusion The MCCSS in this study has good reliability and validity and can be used as a mental health testing and screening tool for military personnel.
10.Dexmedetomidine pretreatment enhances protective effect efficacy of pericytes agaist acute lung injury in septic mice
Xi LUO ; Zisen ZHANG ; Ao YANG ; Liangming LIU ; Tao LI ; Yi HU
Journal of Army Medical University 2025;47(2):101-111
Objective To investigate the effect and mechanism of dexmedetomidine(Dex)pretreated pericytes(Dex-PCs)on acute lung injury(ALI)in septic mice.Methods Mouse model of sepsis-ALI was established with intraperitoneal injection of lipopolysaccharide(LPS)at a dose of 10 mg/kg.A total of 96 C57BL/6J mice were randomly divided into sham operation(Sham)group,ALI group,PC treatment group and Dex-PCs treatment group.The mice of the PCs and Dex-PCs groups received a tail venous injection of 5×105 PC cells,respectively,whereas those of the Sham and ALI groups received equal volume of normal saline.Flow cytometry,immunofluorescence assay,whole-body volume tracing system and ELISA were used to observe the changes in the colonization of PCs,pulmonary vascular permeability,lung function,serum TNF-α and IL-6 levels,as well as the survival rate and survival time of mice at 72 h after LPS stimulation.After PCs and Dex-PCs were exposed to 10 μg/mL LPS,the level of intracellular reactive oxygen species(ROS)was measured.Results Compared with the Sham group,the ALI group had increased permeability of pulmonary vascular endothelial cells,extensive extravasation of Evans blue,severely destructed of lung tissue structure and massive inflammatory cell infiltration,higher lung wet/dry weight ratio,elevated serum TNF-α and IL-6 levels,and declined lung function,and no mice survived for 72 h after modeling(P<0.05).Both PC cell treatment effectively alleviated the pulmonary vascular endothelial leakage,reduced Evans blue content per unit tissue,improved lung pathological structure,lung function and inflammatory responses,and significantly improved the survival rates in the PC group and the Dex-PC group(P<0.05).What's more,the therapeutic effect of Dex-PC cells was significantly better than that of the PC cells(P<0.05).LPS stimulation induced ROS accumulation greatly in PCs,but no such effect was observed in the PCs after Dex pretreatment(P<0.05).Conclusion Dex pretreatment significantly enhances PCs'protective effect on pulmonary vascular endothelial barrier functions in septic mice,which may be due to its enhancing anti-oxidative capacity of PCs.


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