1.Neuroprotective therapy for acute ischemic stroke in the era of endovascular therapy
Mengmeng WANG ; Zhaoyang YAN ; Lingyu ZHANG ; Honghong JI ; Pengfei WANG
International Journal of Cerebrovascular Diseases 2024;32(1):56-61
In recent years, endovascular therapy has become the most important progress in the field of the treatment of acute ischemic stroke caused by large vessel occlusion. However, the vascular recanalization shown by imaging after endovascular treatment cannot fully translate into effective tissue reperfusion and functional outcome, a phenomenon known as "futile recanalization". Combined neuroprotective therapy after vascular recanalization is expected to reduce the occurrence of futile recanalization and improve the outcome of patients. This article briefly summarizes the main application progress of commonly used neuroprotective therapies in clinical practice (edaravone dexborneol, glucocorticoids, hypothermia, and remote ischemic conditioning). It explores the trend and direction of combining endovascular therapy and neuroprotective therapy for patients with acute ischemic stroke caused by large vessel occlusion, and provides further reference and suggestions for intervention measures after endovascular therapy.
2.Exploration on Medication Law of TCM Treatment for Chronic Bronchitis Based on Real World Data
Mengmeng QU ; Ning XU ; Ling ZHOU ; Yunyan QU ; Wei WANG ; Tingting ZHANG ; Mei GAO ; Junzhu JI ; Jiawen YAN ; Haibin YU
Chinese Journal of Information on Traditional Chinese Medicine 2024;31(2):50-58
Objective To summarize the medication law of TCM in the treatment of chronic bronchitis;To provide reference for clinical medication.Methods Medical records of patients with chronic bronchitis who were hospitalized in the Respiratory Department of the First Affiliated Hospital of Henan University of Chinese Medicine from January 1,2016 to December 31,2021 were extracted based on HIS electronic medical record data.After screening,the TCM prescriptions used by patients with chronic bronchitis were input into Excel 2019 to establish a database.Based on the software Lantern 5.0,the latent structure model was learned,hidden variables and explicit variables were obtained,and the model was interpreted.SPSS Modeler 18.0 was used to establish model points with Apriori algorithm for Chinese materia medica with a frequency greater than 6%,to obtain the association rules between drugs,and to analyze the medication law of TCM in treating chronic bronchitis.Results A total of 3 410 cases were included,involving 423 kinds of Chinese materia medica,with a cumulative frequency of 82 766 times.Among them,109 kinds of Chinese materia medica with a frequency of>6 % had a cumulative frequency of 69 845 times.The top five commonly used medicines were Fritillariae Cirrhosae Bulbus,Poria,Atractyodis Macrocephalae Rhizoma,Asteris Radix et Rhizoma,Citri Reticulatae Pericarpium,mainly with medicines of reducing cough and phlegm,antiasthmatic medicine,tonifying deficiency,clearing heat,relieving superficies,promoting blood circulation and removing blood stasis.The medicinal properties were warming,cold and mild,and the main tastes were bitter,sweet and pungent,and the meridians were mainly lung,spleen,liver and stomach meridians.Through analysis of latent structure,49 hidden variables and 149 hidden classes were obtained.Combined with professional knowledge,10 comprehensive clustering models and 21 core formulas were deduced,such as Sangbaipi Decoction,Xuefu Zhuyu Decoction,Xiaoqinglong Decoction,Erchen Decoction,Shashen Maidong Decoction,Liuwei Dihuang Pills,Yinqiao Powder,Zhisou Powder,Yupingfeng Powder,Xuefu Zhuyu Decoction combined with Daotan Decoction,etc.It was concluded that the chronic bronchitis syndrome included phlegm-heat stagnation lung syndrome,qi stagnation blood stasis syndrome,cold fluid attacking lung syndrome,phlegm-dampness accumulation lung syndrome,lung qi and yin deficiency syndrome,kidney yin deficiency syndrome,wind heat attacking lung syndrome,wind cold attacking lung syndrome,lung qi and spleen deficiency syndrome,phlegm stasis interjunction syndrome.A total of 41 strong association rules were screened in the analysis of association rules,including 5 strong association rules for two and 36 strong association rules for three.The high confidence rules were Saposheikovize Radix + Angelicae Sinensis Radix →Atractyodis Macrocephalae Rhizoma,Saposheikovize Radix + Codonopsis Radix → Atractyodis Macrocephalae Rhizoma,Codonopsis Radix + Citri Reticulatae Pericarpium → Atractyodis Macrocephalae Rhizoma;the higher degree of improvement were Bupleuri Radix + Mori Cortex → Scutellariae Radix,Perillae Fructus + Belamcandae Rhizoma → Fritillariae Cirrhosae Bulbus,Armeniacae Semen Amarum + Pinelliae Rhizoma → Citri Reticulatae Pericarpium,etc.Conclusion In the treatment of chronic bronchitis,TCM is mainly used to reduce phlegm,relieve cough and asthma,and the method of promoting blood circulation and removing blood stasis is commonly used to help eliminate phlegm.In addition,TCM pays attention to the application of methods such as tonifying lung and securing the exterior,invigorating spleen and benefiting qi.
3.Progress of molecular mechanisms and targeted therapies of aberrant histone modifications targeting the immune microenvironment of B-cell lymphoma
Xiang LI ; Mengmeng JI ; Weili ZHAO
Journal of Leukemia & Lymphoma 2024;33(5):309-313
Abnormal histone modifications, mainly including abnormal histone methylation and acetylation, play a crucial role in the pathogenesis of B-cell lymphoma. Recent studies have shown that abnormal histone modifications can promote the development of lymphoma by creating a tumor supportive immune microenvironment to promote tumor proliferation and immune escape. Therefore, drugs targeting histone modification gene abnormalities are currently a hot field of B-cell lymphoma. This article reviews the immune microenvironment of B-cell lymphoma, histone modification abnormalities targeting the immune microenvironment, immunomicrobial alterations, and advances in related targeted therapeutic agents.
4.Peripheral immune cells and outcome of patients with acute ischemic stroke
Honghong JI ; Mengmeng WANG ; Lingyu ZHANG ; Pengfei WANG ; Zhen ZHANG
International Journal of Cerebrovascular Diseases 2024;32(6):440-444
After onset of acute ischemic stroke, nerve cells undergo ischemic necrosis, release endogenous damage related pattern molecules, which activate microglia and astrocytes, and lead to immune inflammatory responses. At the same time, it attracts and chemotactically guide peripheral blood immune cells to infiltrate brain tissue through the damaged blood-brain barrier, further exacerbating brain injury. Studies have shown that the peripheral blood immune cells are closely associated with the outcome of acute ischemic stroke. This article summarizes the mechanism of peripheral immune cells in ischemic brain injury, their correlation with clinical outcome, and possible intervention measures.
5.Mechanism of miR-15a-5p regulation of Wnt pathway in paraquat-induced pulmonary fibrosis
Jing WANG ; Xiaohang JI ; Mengmeng WANG ; Wei ZHANG ; Weichao DING ; Juan CHEN ; Jing FENG ; Jiankang MENG ; Zhaorui SUN ; Shinan NIE
Chinese Journal of Emergency Medicine 2024;33(8):1128-1133
Objective:To investigate the effect and molecular mechanism of miR-15a-5p regulation Wnt signaling pathway in PQ-induced pulmonary fibrosis.Methods:The PQ-induced 16HBE cell model was constructed, high-throughput miRNA chip and RT-qPCR were used to screen for miR-15a-5p with significant differences. The experimental groups were as follows: NC group (normal control);no special treatment; PQ group: 50 μmol/L PQ treated cells for 72 h; miR-15a-5p group: 16HBE stable cell lines transfected with miR-15a-5p overexpressing lentivirus; miR-15a-5p+PQ group: Stable cell lines were treated with 50 μmol/L PQ for 72 h. The expression of Wnt pathway-related genes Wnt3α and β-catenin, fibroblast marker genes Collagen I, Vimentin and α SMA, epithelial marker genes Occludin and CK18 were detected by RT-qPCR and Western blot. The mice model of PQ-induced pulmonary fibrosis was constructed, and the protein expression and lung tissue injury were detected by Western blot, HE staining and immunohistochemistry. Data were expressed as mean ± standard deviation, and independent sample t-test was used to analyze the data between the two groups. Results:The expressions of Wnt3α, β-catenin, fibroblast marker genes Collagen I, Vimentin and α SMA significantly up-regulated in cell injury models ( P<0.05), the epithelial cell marker genes Occludin and CK18 significantly down-regulated ( P<0.05), overexpression of miR-15a-5p could inhibit the expression of Wnt3α and alleviated the EMT induced by PQ. In animal models, Wnt3α, β-catenin, fibroblast marker genes Collagen I, Vimentin and α SMA significantly increased ( P<0.01), the structure of lung tissue was disordered and fibrosis occurred, overexpression of miR-15a-5p inhibited the expression of Wnt3α protein ( P<0.05) and ameliorated lung tissue injury. Conclusions:miR-15a-5p ameliorates PQ-induced lung injury by modulating the Wnt3α/β-catenin signaling pathway, thereby inhibiting the development of pulmonary fibrosis.
6.Protective effect of Xuebijing injection on sepsis-associated acute respiratory distress syndrome by suppressing the HIF-1α/p38 MAPK/NF-κB signaling pathway
Weichao DING ; Juan CHEN ; Xiaohang JI ; Yi REN ; Wei ZHANG ; Mengmeng WANG ; Jing FENG ; Xinyao WU ; Jiankang MENG ; Shinan NIE ; Zhaorui SUN
Chinese Journal of Emergency Medicine 2024;33(8):1140-1150
Objective:To explore the protective mechanism of Xuebijing injection (referred to as Xuebijing) on sepsis-associated acute respiratory distress syndrome (ARDS).Methods:① Animal experiments: 100 mice were randomly(random number) divided into 4 groups, including sham operation (Sham) group, cecal ligation and puncture (CLP) group, CLP+low-dose Xuebijing (L-XBJ) group, and CLP+high-dose Xuebijing (H-XBJ) group. The survival rate, lung histological changes, lung wet/dry (W/D) ratio, cell count and protein concentration in bronchoalveolar lavage fluids (BALF), inflammatory factors levels in serum, oxidative stress indicators, cell apoptosis, and key proteins of HIF-1α/p38 MAPK/NF-κB signaling pathway were measured. ② Cell experiments: Mouse alveolar macrophages (MH-S) were cultured in vitro and divided into 6 groups, including control (Con) group, lipopolysaccharide (LPS) group, LPS+L-XBJ group, and LPS+H-XBJ group, LPS+H-XBJ+ dimethyloxallyl glycine (DMOG, HIF-1α activator) group, LPS+H-XBJ+ 2-methoxyestradiol (2ME2, HIF-1α inhibitor) group. The effects of Xuebijing on inflammatory factors, oxidative stress, and cell apoptosis and their relationship with HIF-1α/p38 MAPK/NF-κB signaling pathway were detected.Results:Xuebijing increased the survival rate of mice with sepsis-associated ARDS, relieved lung tissue damage [lung injury score: CLP group (8.778±0.588), CLP+L-XBJ group (5.833±0.310), and CLP+H-XBJ group (4.750±0.246)], alleviated lung W/D ratio, and decreased pneumonia cell infiltration and protein exudation (all P<0.05). Additionally, Xuebijing treatment also diminished the expression of inflammatory factors (TNF-α, IL-1β, and IL-6), intracellular reactive oxygen species (ROS) accumulation, malondialdehyde (MDA) formation, superoxide dismutase (SOD) depletion, and cell apoptosis in LPS-induced MH-S cells and CLP-induced sepsis-associated ARDS mice (all P<0.05). Furthermore, mechanistic investigation further clarified the effects of Xuebijing on inflammation, oxidative stress, and cell apoptosis through the HIF-1α/p38 MAPK/NF-κB signaling pathway. Conclusions:Xuebijing can exert anti-inflammatory, anti-oxidative, and anti-apoptotic effects by suppressing the HIF-1α/p38 MAPK/NF-κB signaling pathway, thereby conferring protection against sepsis-associated ARDS.
7.Internal Limiting Membrane Flap Filling with Subretinal Fluid Preservation in Treatment of High Myopia Combined with Macular Hole Retinal Detachment
Aiping ZENG ; Xin LIU ; Mengmeng JI
Acta Medicinae Universitatis Scientiae et Technologiae Huazhong 2024;53(4):501-506
Objective To investigate the efficacy of pars plana vitrectomy(PPV)combined with internal limiting membrane(ILM)flap filling preserving subretinal fluid(SRF)in treatment of macular hole retinal detachment(MHRD)in patients with high myopia.Methods A retrospective case study was conducted.Thirty patients with high myopia MHRD(total of 32 eyes)with posterior staphyloma and chorioretinal atrophy from department of ophthalmology,Union Hospital,Tongji Medical Col-lege,Huazhong University of Science and Technology between August 2020 and June 2023 were included in the study.The mean axial length was(30.32±1.71)mm.All patients underwent PPV,SRF preservation,and macular hole(MH)nasal flap creation(utilizing the optic disc as a support to fix the detached retina).The ILM flap was inverted to fill MH,and the surgery ended with silicone oil tamponade.The patients were observed for SRF absorption,retinal reattachment,MH closure,and visual acuity changes in the follow-up.Results OCT examination within 1 week after the operation showed that 25 eyes had MH closure and SRF absorption,6 eyes had MH closure with residual SRF,and 1 eye had MH non-closure.During the follow-up period,residual SRF in 7 eyes was fully absorbed within 1 year(5 cases),18 months(1 case),and 21 months(1 case)after the operation.All 32 eyes had retinal reattachment after a single silicone oil removal,and the retinal reattachment rate was 100%.Among the 32 eyes,90.62%(29/32)had MH type Ⅰ closure,including 22 eyes with U-shaped closure,5 eyes with V-shaped closure,and 2 eyes with W-shaped transformation into U-shaped scar closure;9.38%(3/32)had MH type Ⅱ(W-shaped)closure.There was an im-provement in the postoperative best-corrected visual acuity(BCVA,logMAR)from(1.90±0.34)to(1.14±0.37),with a statis-tically significant difference(t=11.11,P<0.01).Conclusion In the presence of residual SRF,the ILM flap inversion filling technique achieves MH closure successfully.The combination of PPV,SRF preservation,ILM flap filling,and silicone oil tam-ponade provides a preferred treatment for highly myopic MHRD with long eye axis and posterior staphyloma.
8.Two-Dimensional Speckle Tracking Imaging in Evaluating Ventricular Function After Transcatheter Pulmonary Valve Replacement in Pulmonary Valve Regurgitation After Tetralogy of Fallot Repair
Mengmeng JI ; Yixia LIN ; Lang GAO ; Qing HE ; Mingxing XIE ; Yuman LI
Chinese Journal of Medical Imaging 2024;32(10):1085-1088
Tetralogy of Fallot is the most common cause of cyanotic congenital heart disease,and it is related with the high incidence of pulmonary regurgitation in repaired tetralogy of Fallot that usually requires pulmonary valve replacement.Transcatheter pulmonary valve replacement can replace traditional surgery in treating pulmonary regurgitation,which can make up for the shortcoming of large injury.Echocardiography is important in assessing ventricular function,however,conventional echocardiographic parameters have several limitations.This study reviewed the application of two-dimensional speckle tracking imaging in evaluating the right and left ventricular function after transcatheter pulmonary valve replacement in pulmonary valve regurgitation after repaired tetralogy of Fallot.
9.Effect and safety of pegylated recombinant human G-CSF on hematopoietic reconstitution after autologous hematopoietic stem cell transplantation in lymphoma patients
Yige SHEN ; Mengmeng JI ; Zhong ZHENG ; Wei TANG ; Weili ZHAO
Chinese Journal of Hematology 2022;43(11):940-945
Objective:Efficacy and safety analysis of pegylated recombinant human granulocyte colony stimulating factor (PEG-rhG-CSF) in promoting hematopoietic recovery after autologous hematopoietic stem cell transplantation (auto-HSCT) in patients with lymphoma.Methods:A total of 149 patients after auto-HSCT in Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine were enrolled in this study from April 2016 to December 2021. There were 75 cases in the PEG-rhG-CSF group who were given a single subcutaneous dose of 100 μg/kg on the first day and +8 d, while 74 cases in the rhG-CSF group were given a dose of 5-10 μg·kg -1·d -1 by subcutaneous injection from +1d continuing to an absolute value of neutrophil (ANC) of more than 1.5×10 9/L. Results:①The time of grade 3/4 agranulocytosis and neutrophil implantation in the PEG-rhG-CSF group were significantly different from that in rhG-CSF group ( P=0.010, 0.030, 0.007) . There were no significant differences in the platelet implantation time, anemia incidence and duration, and platelet and red blood cell infusion within 1 month after transplantation between groups. ②The agranulocytosis with fever incidence in PEG-rhG-CSF group was similar to that in rhG-CSF group (84.0% vs 82.4% , P=0.798) , but the duration was shorter in the PEG-rhG-CSF group (4.0 d vs 5.5 d, P=0.005) . ③The incidence of infection in the PEG-rhG-CSF and the rhG-CSF groups were 22.7% (17/75) and 31.1% (23/74) , respectively ( P=0.247) , and the bloodstream infection incidence were 5.3% (4/75) and 9.5% (7/74) , respectively ( P=0.336) . ④The PEG-rhG-CSF group and rhG-CSF group’s mean length of hospital stay were 31.5 (23-43) days and 37 (25-75) days, respectively ( P<0.001) . ⑤The PEG-rhG-CSF group and rhG-CSF group’s disease-free survival rates were (96.4±2.5) % and (94.7±2.6) % ( P=0.638) , respectively, and the OS rates were 100.0% and (98.6±1.3) % ( P=0.312) , respectively. Conclusion:PEG-rhG-CSF application after auto-HSCT in patients with lymphoma can promote hematopoietic granulocyte reconstruction and shorten hospital stay, but has no significant effect on the incidence of infection, disease-free survival, and overall survival after transplantation.
10.Mediation effect of smoking and healthy diet score on the association between educational level and the risk of lung cancer incidence
Hui WANG ; Xiaoxia WEI ; Zhimin MA ; Mengmeng JI ; Yanqian HUANG ; Jing ZHANG ; Meng ZHU ; Juncheng DAI ; Guangfu JIN ; Hongxia MA ; Zhibin HU ; Hongbing SHEN
Chinese Journal of Epidemiology 2022;43(12):1875-1880
Objective:To evaluate the possible mediation effect of smoking and healthy diet score on the association between educational level and the risk of lung cancer incidence.Methods:After excluding individuals with missing educational levels and cancer information at baseline, 446?772 participants in the UK Biobank (UKB) prospective cohort study were included. Cox regression models were used to investigate the associations of educational level and smoking and healthy diet score with the incidence of lung cancer. Mediating effect analysis was conducted to analyze the mediating effect of smoking and healthy diet score on the correlation between educational level and lung cancer.Results:During a median follow-up of 7.13 years, 1?994 new- onset lung cancer cases were observed. Per 1 standard deviation (5 years) increase in educational level was associated with a 12% lower risk of lung cancer ( HR=0.88, 95% CI: 0.84-0.92). The corresponding level 1-5 in the International Standard Classification for Education (ISCED) were mapped to UKB self‐report highest qualification to estimate the educational level. A higher rank means a higher educational level. Compared with level ISCED-1, the HR(95% CI) of level ISCED-2, ISCED-3, ISCED-4 and ISCED-5 were respectively 0.83 (0.72-0.94), 0.67 (0.53-0.85), 0.76 (0.65-0.89) and 0.72 (0.64-0.80) for lung cancer. Education years were negatively correlated with smoking, with β coefficients (95% CI) being -0.079 (-0.081- -0.077), but positively correlated with healthy diet score ( β=0.042, 95% CI: 0.039-0.045). Analysis of mediating effect indicated that the association of educational level with lung cancer risk was mediated by smoking and healthy diet score, the proportions of mediating effect were 38.952% (95% CI: 31.802%-51.659%) and 1.784% (95% CI: 0.405%-3.713%), respectively. Conclusion:Smoking and healthy diet score might mediate the effect of educational level on the incidence of lung cancer, indicating that improving the level of education can reduce the risk of lung cancer by changing lifestyles such as smoking and diet.

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