1.Mechanism of Modified Huanglian Wendan Decoction in Regulating Autophagy to Improve Insulin Resistance HepG2 Cells Based on JAK2/STAT3 Signaling Pathway
Xing YANG ; Chenghong ZHENG ; Yanbo FAN ; Nian DING ; Mengyu GU ; Yaming DU ; Xiuqi ZOU ; Xinbang LIU
Chinese Journal of Information on Traditional Chinese Medicine 2025;32(8):114-121
Objective To investigate the mechanism of modified Huanglian Wendan Decoction in improving insulin resistance(IR)HepG2 cells by regulating JAK2/STAT3 signaling pathway.Methods HepG2 cells were incubated with 0.25 mmol/L palmitic acid for 24 h to induce IR model.The cells were divided into model group,drug containing serum group and metformin hydrochloride group.Blank serum,modified Huanglian Wendan Decoction drug containing serum and 2 mmol/L metformin hydrochloride intervention were administered,respectively.Normal cultured HepG2 cells were used as control group.The glucose assay kit was used to detect the glucose content in the cell supernatant,the liver glycogen assay kit was used to detect the glycogen content in the cells,the triglycerides(TG)assay kit was used to detect the TG content in the cells,PAS staining was used to observe the glycogen status of the cells,oil red O staining was used to observe the lipid droplet status of the cells,ELISA assay kit was used to detect the contents of interleukin-6(IL-6)and tumor necrosis factor(TNF)-α in cell supernatant,Western blot was used to detect the protein expressions of Janus kinase 2(JAK2),signal transduction and transcription activator 3(STAT3),LC3 and Beclin-1 in the cells.Results Compared with the control group,the glucose content in the supernatant of HepG2 cells in the model group increased(P<0.01),the intracellular glycogen content decreased(P<0.01),the TG content increased(P<0.01),the glycogen staining area decreased(P<0.01),the lipid droplet staining area increased(P<0.01),the contents of IL-6 and TNF-α in the supernatant increased(P<0.01),the expressions of JAK2 and STAT3 proteins increased(P<0.01),and the protein expression of LC3Ⅱ/LC3Ⅰ and Beclin-1 decreased(P<0.01).Compared with the model group,the glucose content decreased in the drug containing serum group and metformin hydrochloride group(P<0.01),the intracellular glycogen content increased(P<0.01),the TG content decreased(P<0.01),the glycogen staining area increased(P<0.01),the lipid droplet staining area decreased(P<0.01),the contents of IL-6 and TNF-α in cell supernatant decreased(P<0.01),the expressions of JAK2 and STAT3 proteins decreased(P<0.01),and the expressions of LC3Ⅱ/LC3Ⅰ and Beclin-1 proteins increased(P<0.05,P<0.01).The effect of modified Huanglian Wendan Decoction was better than that of metformin hydrochloride(P<0.05,P<0.01).Conclusion Modified Huanglian Wendan Decoction can possibly improve glucose and lipid metabolism and reduce inflammation in IR-HepG2 cells through intervening JAK2/STAT3 signaling pathway and mediating autophagy.
2.Tumors Invaded in the Central Airway in Predicting Severe Immune Checkpoint Inhibitor-Related Pneumonitis Based on Propensity Score Matching
Bofeng ZHAO ; Yaming ZHANG ; Ping CHEN ; Wei FENG ; Kejun NAN ; Jinpeng LIU ; Baoying CHEN
Chinese Journal of Medical Imaging 2025;33(6):645-650
Purpose To evaluate the value of tumors invasion in the central airway(TICA)in predicting the severe immune checkpoint inhibitor-related pneumonitis(S-CIP)in lung cancer patients using propensity score matching(PSM).Materials and Methods The intact data of 162 consecutive lung cancer patients who received treatment with immune checkpoint inhibitors in Xi'an International Medical Center Hospital from September 2019 to March 2022 were retrospectively collected.Patients were divided into S-CIP group(23 cases)and non-S-CIP group(139 cases)according to the presence of S-CIP.The demographic information of the patients,including gender,age,history of smoking,thoracic radiotherapy histology,baseline lung diseases,classification,TNM stage,tumor location as well as TICA were collected.A binary Logistic regression was used to analyze the confounding factors and independent risk factors of S-CIP and to predict the development of S-CIP.A 1:1 matching was performed by the nearest neighbor method for PSM.The PSM was used to pair the two groups,and the value of TICA in predicting S-CIP before and after PSM was compared.The receiver operating characteristic curve and the area under the curve were used for model performance based on TICA.Results Before PSM,the proportion of baseline lung diseases(78.3%vs.32.4%,OR=6.802,P=0.001),thoracic radiotherapy history(69.6%vs.30.2%,OR=5.300,P=0.002)and TICA(65.2%vs.27.3%,OR=5.882,P=0.001)in the S-CIP group was higher than those in the non-S-CIP group,and were independent risk factor for predicting S-CIP.After PSM,20 patients were included in each group.The presence of TICA was higher in S-CIP group than that in the non-S-CIP group(60.0%vs.20.0%,OR=6.000,P=0.013).The area under the curves of Logistic regression model based on TICA was 0.700(95%CI 0.534-0.866).Conclusion TICA is an independent risk factor for development of S-CIP,which has moderate degree of accuracy in predicting S-CIP,can be used for risk prediction and early intervention to reduce the poor prognosis of S-CIP patients.
3.Tumors Invaded in the Central Airway in Predicting Severe Immune Checkpoint Inhibitor-Related Pneumonitis Based on Propensity Score Matching
Bofeng ZHAO ; Yaming ZHANG ; Ping CHEN ; Wei FENG ; Kejun NAN ; Jinpeng LIU ; Baoying CHEN
Chinese Journal of Medical Imaging 2025;33(6):645-650
Purpose To evaluate the value of tumors invasion in the central airway(TICA)in predicting the severe immune checkpoint inhibitor-related pneumonitis(S-CIP)in lung cancer patients using propensity score matching(PSM).Materials and Methods The intact data of 162 consecutive lung cancer patients who received treatment with immune checkpoint inhibitors in Xi'an International Medical Center Hospital from September 2019 to March 2022 were retrospectively collected.Patients were divided into S-CIP group(23 cases)and non-S-CIP group(139 cases)according to the presence of S-CIP.The demographic information of the patients,including gender,age,history of smoking,thoracic radiotherapy histology,baseline lung diseases,classification,TNM stage,tumor location as well as TICA were collected.A binary Logistic regression was used to analyze the confounding factors and independent risk factors of S-CIP and to predict the development of S-CIP.A 1:1 matching was performed by the nearest neighbor method for PSM.The PSM was used to pair the two groups,and the value of TICA in predicting S-CIP before and after PSM was compared.The receiver operating characteristic curve and the area under the curve were used for model performance based on TICA.Results Before PSM,the proportion of baseline lung diseases(78.3%vs.32.4%,OR=6.802,P=0.001),thoracic radiotherapy history(69.6%vs.30.2%,OR=5.300,P=0.002)and TICA(65.2%vs.27.3%,OR=5.882,P=0.001)in the S-CIP group was higher than those in the non-S-CIP group,and were independent risk factor for predicting S-CIP.After PSM,20 patients were included in each group.The presence of TICA was higher in S-CIP group than that in the non-S-CIP group(60.0%vs.20.0%,OR=6.000,P=0.013).The area under the curves of Logistic regression model based on TICA was 0.700(95%CI 0.534-0.866).Conclusion TICA is an independent risk factor for development of S-CIP,which has moderate degree of accuracy in predicting S-CIP,can be used for risk prediction and early intervention to reduce the poor prognosis of S-CIP patients.
4.Mechanism of Modified Huanglian Wendan Decoction in Regulating Autophagy to Improve Insulin Resistance HepG2 Cells Based on JAK2/STAT3 Signaling Pathway
Xing YANG ; Chenghong ZHENG ; Yanbo FAN ; Nian DING ; Mengyu GU ; Yaming DU ; Xiuqi ZOU ; Xinbang LIU
Chinese Journal of Information on Traditional Chinese Medicine 2025;32(8):114-121
Objective To investigate the mechanism of modified Huanglian Wendan Decoction in improving insulin resistance(IR)HepG2 cells by regulating JAK2/STAT3 signaling pathway.Methods HepG2 cells were incubated with 0.25 mmol/L palmitic acid for 24 h to induce IR model.The cells were divided into model group,drug containing serum group and metformin hydrochloride group.Blank serum,modified Huanglian Wendan Decoction drug containing serum and 2 mmol/L metformin hydrochloride intervention were administered,respectively.Normal cultured HepG2 cells were used as control group.The glucose assay kit was used to detect the glucose content in the cell supernatant,the liver glycogen assay kit was used to detect the glycogen content in the cells,the triglycerides(TG)assay kit was used to detect the TG content in the cells,PAS staining was used to observe the glycogen status of the cells,oil red O staining was used to observe the lipid droplet status of the cells,ELISA assay kit was used to detect the contents of interleukin-6(IL-6)and tumor necrosis factor(TNF)-α in cell supernatant,Western blot was used to detect the protein expressions of Janus kinase 2(JAK2),signal transduction and transcription activator 3(STAT3),LC3 and Beclin-1 in the cells.Results Compared with the control group,the glucose content in the supernatant of HepG2 cells in the model group increased(P<0.01),the intracellular glycogen content decreased(P<0.01),the TG content increased(P<0.01),the glycogen staining area decreased(P<0.01),the lipid droplet staining area increased(P<0.01),the contents of IL-6 and TNF-α in the supernatant increased(P<0.01),the expressions of JAK2 and STAT3 proteins increased(P<0.01),and the protein expression of LC3Ⅱ/LC3Ⅰ and Beclin-1 decreased(P<0.01).Compared with the model group,the glucose content decreased in the drug containing serum group and metformin hydrochloride group(P<0.01),the intracellular glycogen content increased(P<0.01),the TG content decreased(P<0.01),the glycogen staining area increased(P<0.01),the lipid droplet staining area decreased(P<0.01),the contents of IL-6 and TNF-α in cell supernatant decreased(P<0.01),the expressions of JAK2 and STAT3 proteins decreased(P<0.01),and the expressions of LC3Ⅱ/LC3Ⅰ and Beclin-1 proteins increased(P<0.05,P<0.01).The effect of modified Huanglian Wendan Decoction was better than that of metformin hydrochloride(P<0.05,P<0.01).Conclusion Modified Huanglian Wendan Decoction can possibly improve glucose and lipid metabolism and reduce inflammation in IR-HepG2 cells through intervening JAK2/STAT3 signaling pathway and mediating autophagy.
5.Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients (version 2024)
Yao LU ; Yang LI ; Leiying ZHANG ; Hao TANG ; Huidan JING ; Yaoli WANG ; Xiangzhi JIA ; Li BA ; Maohong BIAN ; Dan CAI ; Hui CAI ; Xiaohong CAI ; Zhanshan ZHA ; Bingyu CHEN ; Daqing CHEN ; Feng CHEN ; Guoan CHEN ; Haiming CHEN ; Jing CHEN ; Min CHEN ; Qing CHEN ; Shu CHEN ; Xi CHEN ; Jinfeng CHENG ; Xiaoling CHU ; Hongwang CUI ; Xin CUI ; Zhen DA ; Ying DAI ; Surong DENG ; Weiqun DONG ; Weimin FAN ; Ke FENG ; Danhui FU ; Yongshui FU ; Qi FU ; Xuemei FU ; Jia GAN ; Xinyu GAN ; Wei GAO ; Huaizheng GONG ; Rong GUI ; Geng GUO ; Ning HAN ; Yiwen HAO ; Wubing HE ; Qiang HONG ; Ruiqin HOU ; Wei HOU ; Jie HU ; Peiyang HU ; Xi HU ; Xiaoyu HU ; Guangbin HUANG ; Jie HUANG ; Xiangyan HUANG ; Yuanshuai HUANG ; Shouyong HUN ; Xuebing JIANG ; Ping JIN ; Dong LAI ; Aiping LE ; Hongmei LI ; Bijuan LI ; Cuiying LI ; Daihong LI ; Haihong LI ; He LI ; Hui LI ; Jianping LI ; Ning LI ; Xiying LI ; Xiangmin LI ; Xiaofei LI ; Xiaojuan LI ; Zhiqiang LI ; Zhongjun LI ; Zunyan LI ; Huaqin LIANG ; Xiaohua LIANG ; Dongfa LIAO ; Qun LIAO ; Yan LIAO ; Jiajin LIN ; Chunxia LIU ; Fenghua LIU ; Peixian LIU ; Tiemei LIU ; Xiaoxin LIU ; Zhiwei LIU ; Zhongdi LIU ; Hua LU ; Jianfeng LUAN ; Jianjun LUO ; Qun LUO ; Dingfeng LYU ; Qi LYU ; Xianping LYU ; Aijun MA ; Liqiang MA ; Shuxuan MA ; Xainjun MA ; Xiaogang MA ; Xiaoli MA ; Guoqing MAO ; Shijie MU ; Shaolin NIE ; Shujuan OUYANG ; Xilin OUYANG ; Chunqiu PAN ; Jian PAN ; Xiaohua PAN ; Lei PENG ; Tao PENG ; Baohua QIAN ; Shu QIAO ; Li QIN ; Ying REN ; Zhaoqi REN ; Ruiming RONG ; Changshan SU ; Mingwei SUN ; Wenwu SUN ; Zhenwei SUN ; Haiping TANG ; Xiaofeng TANG ; Changjiu TANG ; Cuihua TAO ; Zhibin TIAN ; Juan WANG ; Baoyan WANG ; Chunyan WANG ; Gefei WANG ; Haiyan WANG ; Hongjie WANG ; Peng WANG ; Pengli WANG ; Qiushi WANG ; Xiaoning WANG ; Xinhua WANG ; Xuefeng WANG ; Yong WANG ; Yongjun WANG ; Yuanjie WANG ; Zhihua WANG ; Shaojun WEI ; Yaming WEI ; Jianbo WEN ; Jun WEN ; Jiang WU ; Jufeng WU ; Aijun XIA ; Fei XIA ; Rong XIA ; Jue XIE ; Yanchao XING ; Yan XIONG ; Feng XU ; Yongzhu XU ; Yongan XU ; Yonghe YAN ; Beizhan YAN ; Jiang YANG ; Jiangcun YANG ; Jun YANG ; Xinwen YANG ; Yongyi YANG ; Chunyan YAO ; Mingliang YE ; Changlin YIN ; Ming YIN ; Wen YIN ; Lianling YU ; Shuhong YU ; Zebo YU ; Yigang YU ; Anyong YU ; Hong YUAN ; Yi YUAN ; Chan ZHANG ; Jinjun ZHANG ; Jun ZHANG ; Kai ZHANG ; Leibing ZHANG ; Quan ZHANG ; Rongjiang ZHANG ; Sanming ZHANG ; Shengji ZHANG ; Shuo ZHANG ; Wei ZHANG ; Weidong ZHANG ; Xi ZHANG ; Xingwen ZHANG ; Guixi ZHANG ; Xiaojun ZHANG ; Guoqing ZHAO ; Jianpeng ZHAO ; Shuming ZHAO ; Beibei ZHENG ; Shangen ZHENG ; Huayou ZHOU ; Jicheng ZHOU ; Lihong ZHOU ; Mou ZHOU ; Xiaoyu ZHOU ; Xuelian ZHOU ; Yuan ZHOU ; Zheng ZHOU ; Zuhuang ZHOU ; Haiyan ZHU ; Peiyuan ZHU ; Changju ZHU ; Lili ZHU ; Zhengguo WANG ; Jianxin JIANG ; Deqing WANG ; Jiongcai LAN ; Quanli WANG ; Yang YU ; Lianyang ZHANG ; Aiqing WEN
Chinese Journal of Trauma 2024;40(10):865-881
Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.
6.Effect of Naples prognostic score on prognosis of hepatocellular carcinoma patients undergoing hepatectomy
Yaming XIE ; Lei LIANG ; Zunqiang XIAO ; Junwei LIU ; Chengwu ZHANG ; Dongsheng HUANG
Chinese Journal of Hepatobiliary Surgery 2024;30(5):341-346
Objective:To assess the impact of preoperative Naples prognostic score on the prognosis of patients with hepatocellular carcinoma (HCC) after hepatic resection.Methods:Retrospective analysis was conducted on the data of 323 patients with HCC who underwent radical hepatectomy in Zhejiang Provincial People's Hospital from January 2012 to December 2017, including 281 males and 42 females, aged (56.6±11.3) years. All patients were divided into three groups according to their preoperative Naples prognostic scores: group A (0) ( n=37), group B (1-2) ( n=193), group C (3-4) ( n=93). Survival was analysed by the Kaplan-Meier method, and differences in survival were compared by the log-rank test. Univariate and multivariate Cox regression were used to analyse the effect of Naples prognostic score on prognosis. Results:The 1-, 3- and 5-year cumulative survival rates of HCC patients after hepatectomy were 91.9%, 78.4% and 68.3% in the A group, 89.1%, 76.1% and 64.4% in the B group, and 84.9%, 63.3% and 43.5% in the C group, respectively, and the cumulative survival rates showed a decreasing trend among the three groups, and the differences were statistically significant (all P<0.05). The recurrence-free survival rates at 1, 3 and 5 years after hepatectomy were 93.4%, 63.3% and 44.3% in the A group, 77.7%, 46.5% and 35.6% in the B group, and 64.1%, 41.1% and 28.2% in the C group, respectively, and the recurrence-free survival rates showed a decreasing trend among the three groups, and the differences were statistically significant (all P<0.05). On Cox multivariate analysis, patients with HCC of 3-4 had a higher risk of death after hepatic resection than those patients of 0 ( HR=2.011, 95% CI: 1.048-3.859, P=0.036), and the risk of postoperative recurrence was also higher than those patients of 0 ( HR=1.820, 95% CI: 1.081-3.066, P=0.024). Conclusion:Preoperative Naples prognostic score performs as a prognostic influence factor on survival and recurrence-free survival after hepatectomy in patients with HCC.
7.LU Zheng's Experience in the Treatment of Colon Cancer by"Invigorating Spleen,Clearing Intestine and Detoxifying"
Yaming LIU ; Rui FU ; Mingxian CHEN
Journal of Zhejiang Chinese Medical University 2024;48(9):1154-1158
[Objective]To summarize the clinical experience of Professor LU Zheng,in the treatment of colon cancer by"strengthening spleen and clearing intestine and detoxifying".[Methods]Through outpatient follow-up study,case collection and collation,looking up the literature and TCM classics related to colon cancer,studying Professor LU Zheng's"DU Zheng Opinions",combining with clinical interpretation,this article discussed the etiology and pathogenesis of colon cancer,explained the treatment method of colon cancer as"strengthening spleen and clearing intestines and detoxifying"under the guidance of"four-layer general principle of toxin syndrome",summarized the key points of clinical syndrome differentiation and treatment and the rules of prescription and drug use,finally provided examples to illustrate it.[Results]Professor LU Zheng believed that the basic pathogenesis of colon cancer was the damage of spleen and stomach vitality and the accumulation of cancer toxin in the intestine,and further pointed out that the damage of spleen and stomach vitality was the premise of the occurrence and development of colon cancer,and the accumulation of cancer toxin in the intestine was the key to the occurrence,recurrence and metastasis of colon cancer.The clinical treatment should focus on restoring the vitality of spleen and stomach,clearing the endogenous evil factors such as dampness,heat,phlegm and stasis in the intestine and the residual cancer toxin,clearing the intestinal Qi mechanism,that was,taking"strengthening spleen and clearing intestines and detoxifying"as the guiding ideology,according to the specific symptoms of patients after operation,it was summarized into five syndromes:damp-heat toxin,phlegm and stasis toxin,stasis and blood toxin,Yang deficiency cold toxin,Yin deficiency heat toxin.According to the concept of supporting the essence and removing the toxin,the treatments were heat-clearing and detoxification,phlegm-removing and stasis-removing,stasis-removing and detoxification,warming the essence and removing the toxin,nourishing the Yin and detoxifying,thus to eliminate the postoperative residual toxin,completely eradicate new cancer toxin.After the treatment of"strengthening spleen,clearing intestine and detoxifying toxin",the symptoms were relived and quality of life was improved,and there was no tumor recurrence and metastasis during follow-up period.[Conclusion]By summarizing the clinical experience of Professor LU Zheng's"strengthening spleen and clearing intestine and detoxifying"in the treatment of colon cancer,the application of LU Zheng essences theory of toxifying syndrome in the treatment of cancer was demonstrated,and the reference was provided for the differentiation and treatment of colon cancer.Professor LU Zheng takes"strengthening spleen and clearing intestine and detoxifying"as the basic rule to treat colon cancer,which can provide a reference for the prevention and treatment of colon cancer with traditional Chinese medicine.
8.Evaluation on the curative effect of digital subtraction angiography-guided radiofrequency ablation in patients with lumbar disc herniation based on infrared thermal imaging technology
Yaming LIU ; Zhongnan ZHAO ; Fanghui HUANG ; Shuaiyi LIU ; Yan JIAO ; Qinghai LYU
Journal of Clinical Surgery 2024;32(6):639-643
Objective To explore the evaluation on the curative effect of digital subtraction angiography(DSA)-guided radiofrequency ablation in patients with lumbar disc herniation(LDH)based on infrared thermal imaging technology.Methods A total of 90 patients with LDH treated in the hospital were enrolled as the research objects between February 2019 and February 2022.According to different treatment methods,they were divided into observation group(n=45)and control group(n=45).The control group was treated with radiofrequency ablation,while observation group was treated with DSA-guided radiofrequency ablation.The scores of visual analogue scale(VAS),Oswestry disability index(ODI)and Japanese Orthopaedic Association(JOA),and levels of serologic indexes[interleukin-1β(IL-1β),interleukin-6(IL-6),tumor necrosis factor-α(TNF-α)]were compared between the two groups before treatment and at 1 month and 3 months after treatment.The skin temperature of lesions was detected by infrared thermal imaging,and its correlation with VAS,ODI and JOA scores was analyzed by Pearson correlation analysis.Results Before treatment,there was no significant difference in VAS score between the two groups(P>0.05).At 1 month and 3 months after treatment,VAS scores in both groups were decreased,which were lower in observation group than control group(P<0.05).Before treatment,there was no significant difference in ODI and JO A scores between the two groups(P>0.05).At 1 month and 3 months after treatment,ODI scores in both groups were decreased,which were lower in observation group than control group,while JOA scores were increased,which were higher in observation group than control group(P<0.05).Before treatment,there was no significant difference in levels of serum IL-1β,IL-6 and TNF-α between the two groups(P>0.05).At 1 month and 3 months after treatment,levels of serum IL-1 β,IL-6 and TNF-α in both groups were decreased,which were lower in observation group than control group(P<0.05).Before treatment,there was no significant difference in skin temperature of lesions between the two groups(P>0.05).At 1 month and 3 months after treatment,skin temperature of lesions in both groups was decreased,which was lower in observation group than control group(P<0.05).Pearson correlation analysis showed that skin temperature of lesions was positively correlated with VAS,ODI and JOA scores at 1 month and 3 months after treatment(r=0.455,0.502,0.523,0.675,0.659,0.611,P<0.05).Conclusion Curative effect of DSA-guided radiofrequency ablation is good on LDH patients,and infrared thermal imaging can effectively evaluate the curative effect.
9.Metformin ameliorates PM2.5-induced functional impairment of placental trophoblasts by inhibiting ferroptosis
Shuxian LI ; Shuping YU ; Yaming MU ; Kai WANG ; Yu LIU ; Meihua ZHANG
Journal of Southern Medical University 2024;44(3):437-446
Objective To investigate the protective effect of metformin against PM2.5-induced functional impairment of placental trophoblasts and explore the underlying mechanism.Methods Sixteen pregnant Kunming mice were randomly assigned into two groups(n=8)for intratracheal instillation of PBS or PM2.5 suspension at 1.5,7.5,and 12.5 days of gestation.The pregnancy outcome of the mice was observed,and placental zonal structure and vascular density of the labyrinth area were examined with HE staining,followed by detection of ferroptosis-related indexes in the placenta.In cultured human trophoblasts(HTR8/SVneo cells),the effects of PM2.5 exposure and treatment with metformin on cell viability,proliferation,migration,invasion,and tube formation ability were evaluated using CCK8 assay,EDU staining,wound healing assay,Transwell experiment,and tube formation experiment;the cellular expressions of ferroptosis-related proteins were analyzed using ELISA and Western blotting.Results M2.5 exposure of the mice during pregnancy resulted in significantly decreased weight and number of the fetuses and increased fetal mortality with a reduced placental weight(all P<0.001).PM2.5 exposure also caused obvious impairment of the placental structure and trophoblast ferroptosis.In cultured HTR8/SVneo cells,PM2.5 significantly inhibited proliferation,migration,invasion,and angiogenesis of the cells by causing ferroptosis.Metformin treatment obviously attenuated PM2.5-induced inhibition of proliferation,migration,invasion,and angiogenesis of the cells,and effectively reversed PM2.5-induced ferroptosis in the trophoblasts as shown by significantly increased intracellular GSH level and SOD activity,reduced MDA and Fe2+ levels,and upregulated GPX4 and SLC7A11 protein expression(P<0.05 or 0.01).Conclusion PM2.5 exposure during pregnancy causes adverse pregnancy outcomes and ferroptosis and functional impairment of placental trophoblasts in mice,and metformin can effectively alleviate PM2.5-induced trophoblast impairment.
10.Analysis of clinical characteristics in 9 cases of empyema caused by Streptococcus anginosus
Song LIU ; Yaming LI ; Zonghai LI ; Hui CHEN ; Xin DIAO ; Shuang PAN
Chongqing Medicine 2024;53(15):2362-2365,2369
Objective To investigate the clinical characteristics of empyema caused by Streptococcus anginosus (SA).Methods The clinical data in 9 cases of SA caused empyema admitted and treated in the First Affiliated Hospital of Xi'an Medical University from January 2016 to September 2023 were analyzed ret-rospectively,summarized the clinical characteristics of empyema caused by SA.Results Among 9 patients,there were 8 males and 1 female,with a mean age of (60.8±12.8)years old.All patients had the underlying diseases,meanwhile were accompanied by fever,expectoration,chest pain and dyspnea.The onset time was (6.1±2.2)d.The hospitalization time was (19.33±7.48)d.All patients showed the increase in white blood cells (WBC),C reactive protein (CRP),procalcitonin (PCT),D-dimer (D-D) and pleural effusion lactic dehy-drogenase (LDH),and decrease in blood albumin (ALB) and pleural effusion glucose (GLU).Most of the pa-tients had elevation of adenosine deaminase (ADA) in pleural fluid.Four patients had respiratory failure.The drug sensitivity test results of pleural effusion culture suggested five patients were resistant to erythromycin and clindamycin.One patient was resistant to ceftriaxone.Nine patients were improved after symptomatic treatment such as anti-infection,closed thoracic drainage and nutritional support.Conclusion The patients with SA caused empye-ma are more common in elderly patients with underlying diseases.The incubation period is short,the hospital stay is long,the infection indexes are high,malnutrition exists,and the resistance rate to erythromycin and clindamycin is high.

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