AIM:To investigate the effect of plasmin on epithelial sodium channel γ-subunit(γ-ENaC)acti-vation in mouse M-1 cells and the role of nuclear factor-κB(NF-κB).METHODS:Mouse M-1 cells were divided into three experimental parts.In the first part,the cells were divided into a control group,a plasmin group,and a plasmin+BAY 11-7082(NF-κB inhibitor)group to explore the effects of plasmin on inflammatory factors and γ-ENaC.In the sec-ond part,the cells were divided into a control group,a BAY 11-7082 group and a BAY 11-7082+plasmin group.M-1 cells were pretreated with BAY 11-7082 to explore the role of NF-κB in the regulation of γ-ENaC expression by plasmin.In the third part,the cells were divided into a control group,a plasmin group and an interleukin-6(IL-6)group.M-1 cells were treated with plasmin or IL-6 to explore the regulatory effect of IL-6 downstream of NF-κB on γ-ENaC.After drug interven-tion,the levels of IL-6,tumor necrosis factor-α(TNF-α),monocyte chemoattractant protein-1(MCP-1)and IL-1β in cell culture supernatants were detected by ELISA.The protein levels of phosphorylated inhibitor of nuclear factor-κB α(p-IκBα)/IκBα,p-NF-κB p65/NF-κB p65,and γ-ENaC was detected by Western blot.The distribution of γ-ENaC on the membrane was detected by immunofluorescence staining.RESULTS:Compared with control group,the levels of IL-6,TNF-α,MCP-1 and IL-1β in the supernatants of cells treated with 10 mg/L plasmin for 24 h were increased(n=3,P<0.01),the protein levels of p-IκBα/IκBα,p-NF-κB p65/NF-κB p65 and γ-ENaC were increased(n=5,P<0.01),and the distribution of γ-ENaC on the membrane was increased.Compared with plasmin group,the levels of IL-6,TNF-α,MCP-1,IL-1β,p-IκBα/IκBα,p-NF-κB p65/NF-κB p65 and γ-ENaC,and the γ-ENaC distribution on the membrane were lowered in plasmin and BAY 11-7082 coculture group(n=3,P<0.05 or P<0.01).Compared with control group,the ratio of p-NF-κB p65/NF-κB p65 decreased in BAY 11-7082 group(n=5,P<0.05),whereas there was no significant change in γ-ENaC.After stimulation with plasmin,the levels of p-IκBα/IκBα,p-NF-κB p65/NF-κB p65 and γ-ENaC in-creased(n=5,P<0.05 or P<0.01),and the γ-ENaC distribution on the membrane increased.Treatment with IL-6,downstream of NF-κB,increased the protein expression of γ-ENaC(n=5,P<0.05)and the distribution of γ-ENaC on the membrane after 24 h of intervention.CONCLUSION:The regulation of γ-ENaC expression by plasmin in mouse M-1 cells is related to the abnormal increase in inflammatory factors after NF-κB activation.

AIM:To investigate the effect of plasmin on epithelial sodium channel γ-subunit(γ-ENaC)acti-vation in mouse M-1 cells and the role of nuclear factor-κB(NF-κB).METHODS:Mouse M-1 cells were divided into three experimental parts.In the first part,the cells were divided into a control group,a plasmin group,and a plasmin+BAY 11-7082(NF-κB inhibitor)group to explore the effects of plasmin on inflammatory factors and γ-ENaC.In the sec-ond part,the cells were divided into a control group,a BAY 11-7082 group and a BAY 11-7082+plasmin group.M-1 cells were pretreated with BAY 11-7082 to explore the role of NF-κB in the regulation of γ-ENaC expression by plasmin.In the third part,the cells were divided into a control group,a plasmin group and an interleukin-6(IL-6)group.M-1 cells were treated with plasmin or IL-6 to explore the regulatory effect of IL-6 downstream of NF-κB on γ-ENaC.After drug interven-tion,the levels of IL-6,tumor necrosis factor-α(TNF-α),monocyte chemoattractant protein-1(MCP-1)and IL-1β in cell culture supernatants were detected by ELISA.The protein levels of phosphorylated inhibitor of nuclear factor-κB α(p-IκBα)/IκBα,p-NF-κB p65/NF-κB p65,and γ-ENaC was detected by Western blot.The distribution of γ-ENaC on the membrane was detected by immunofluorescence staining.RESULTS:Compared with control group,the levels of IL-6,TNF-α,MCP-1 and IL-1β in the supernatants of cells treated with 10 mg/L plasmin for 24 h were increased(n=3,P<0.01),the protein levels of p-IκBα/IκBα,p-NF-κB p65/NF-κB p65 and γ-ENaC were increased(n=5,P<0.01),and the distribution of γ-ENaC on the membrane was increased.Compared with plasmin group,the levels of IL-6,TNF-α,MCP-1,IL-1β,p-IκBα/IκBα,p-NF-κB p65/NF-κB p65 and γ-ENaC,and the γ-ENaC distribution on the membrane were lowered in plasmin and BAY 11-7082 coculture group(n=3,P<0.05 or P<0.01).Compared with control group,the ratio of p-NF-κB p65/NF-κB p65 decreased in BAY 11-7082 group(n=5,P<0.05),whereas there was no significant change in γ-ENaC.After stimulation with plasmin,the levels of p-IκBα/IκBα,p-NF-κB p65/NF-κB p65 and γ-ENaC in-creased(n=5,P<0.05 or P<0.01),and the γ-ENaC distribution on the membrane increased.Treatment with IL-6,downstream of NF-κB,increased the protein expression of γ-ENaC(n=5,P<0.05)and the distribution of γ-ENaC on the membrane after 24 h of intervention.CONCLUSION:The regulation of γ-ENaC expression by plasmin in mouse M-1 cells is related to the abnormal increase in inflammatory factors after NF-κB activation.

Objective Endophytic fungi were isolated and purified from fresh Glycyrrhiza glabra L.and strains capable of producing secondary metabolites with inhibitory effects on adenosine deaminase,β-lactamase,xanthine oxidase,and tyrosinase were screened.Methods Four types of culture media were used to isolate and purify endophytic fungi using tissue homogenization method.Subsequently,the secondary metabolites of endophytic fungi were evaluated using an activity assessment platform.Results A total of 131 strains of endophytic fungi were isolated from the plant,among which 34 strains exhibited distinct morphologies and special characteristics.The mycelial extract of hypha G(1-5)(s)showed good adenosine deaminase inhibitory activity(inhibition rate:98.58％)and β-lactamase inhibitory activity(inhibition rate:93.15％).and β-lactamase(inhibition rate:93.15％).Strain G6 exhibited excellent xanthine oxidase inhibitory activity(inhibition rate:91.38％)in the ethyl acetate phase.These strains were identified as Penicillium sp.and Aspergillus sp.Conclusion Glycyrrhiza glabra L.harbors a diverse range of endophytic fungi with promising research potential.Further investigation is warranted to provide important technical data for the protection and in-depth applications of Glycyrrhiza glabra L..

Objective Endophytic fungi were isolated and purified from fresh Glycyrrhiza glabra L.and strains capable of producing secondary metabolites with inhibitory effects on adenosine deaminase,β-lactamase,xanthine oxidase,and tyrosinase were screened.Methods Four types of culture media were used to isolate and purify endophytic fungi using tissue homogenization method.Subsequently,the secondary metabolites of endophytic fungi were evaluated using an activity assessment platform.Results A total of 131 strains of endophytic fungi were isolated from the plant,among which 34 strains exhibited distinct morphologies and special characteristics.The mycelial extract of hypha G(1-5)(s)showed good adenosine deaminase inhibitory activity(inhibition rate:98.58％)and β-lactamase inhibitory activity(inhibition rate:93.15％).and β-lactamase(inhibition rate:93.15％).Strain G6 exhibited excellent xanthine oxidase inhibitory activity(inhibition rate:91.38％)in the ethyl acetate phase.These strains were identified as Penicillium sp.and Aspergillus sp.Conclusion Glycyrrhiza glabra L.harbors a diverse range of endophytic fungi with promising research potential.Further investigation is warranted to provide important technical data for the protection and in-depth applications of Glycyrrhiza glabra L..

Objective: Based on observational, longitudinal and intervention study of common diseases among students in Jiangsu Province, this paper presents the current progress of two year follow up of myopia cohort regarding the association between growth parameters with progression of myopia among children and adolescents in areas with rapid economic growth. Methods: This survey adopted the stratified cluster sampling method for school selection. The full automatic computer optometry (TOPCON RM800) was used to track myopia related parameters for all participants from 2019 to 2020 under the condition of mydriasis (compound topicamide eye drops). Relationship between growth parameters of children and adolescents and the incidence and progression of myopia was analyzed by using Cox regression multiple statistical model. Results: The myopia rates of students from grade 1 to grade 3 in 2019 were 5.4%, 21.5% and 37.3% respectively. After one year, the myopia rates of all school stages increased to 25.3%, 43.3% and 58.1% respectively( χ 2=53.59, 49.63, 32.52, P <0.01). The mean diopter of right eye and left eye after mydriasis were ( 0.30± 1.24/0.39±1.26)D in 2019 and (-0.33±1.54/-0.19±1.55)D in 2020, respectively based on Cox multiple regression results, age ( HR =1.21, 95% CI =1.09-1.34), naked eye vision ( HR =0.08, 95% CI =0.07-0.11), height ( HR =0.98, 95% CI =0.97-0.99) showed a strong correlation with the incidence and progression of myopia( P <0.05). Conclusion Myopia is growing rapidly in the central region of Jiangsu Province. It is suggested that diopter, axial length, naked eye vision, age, height and other indicators should be included in the refractive archives of children and adolescents in the region.

Objective:To describe the epidemiological and clinical characteristics of patients with novel coronavirus (2019-nCoV) -infected pneumonia in Enshi, Hubei, and to improve the awareness of the disease, which is key for surveillance and control measures of 2019-nCoV pneumonia in the region.Methods:The first 66 laboratory-confirmed 2019-nCoV patients in Enshi between January 23, 2020 and February 1, 2020 were included. Their epidemiological data, demographic data, clinical data and therapeutic effect were retrospectively analyzed.Results:Among the first 66 patients with confirmed 2019-nCoV, patients had an average age of 46±9 years, 35 (53.0%) patients were male and 31 (47.0%) female; 38 (57.6%) patients were Han, 18 (27.3%) were Tujia, and 10 (15.1%) were Miao. Thirty-seven (56%) patients had chronic diseases such as coronary heart disease, chronic bronchus, inflammation, diabetes, hypertension, hypothyroidism, and rheumatoid arthritis. All the patients had a history of exposure or indirect exposure in Wuhan epidemic area, mainly history of Wuhan sojourner. The mean incubation period varied from 2.5-16 days, with the 95th percentile of the distribution at 7 days. The main clinical manifestation were fever [66 (100%) patients], dry cough [56 (84.8%)], chest tightness [21 (31.8%)], shortness of breath [8 (12.1%)], massive fatigue [23 (34.8%)], muscle ache [6 (9.1%)], headache [4 (6.1%)], sore throat [13 (19.7%) ], rhinorrhoea [11 (16.7%) ], and diarrhea [ 5 (7.6%)]. Six (9.1%) critically ill patients and 4 (6.1%) critically ill patients had dyspnea. White blood cell counts were normal or decreased in 51 (77.3%) patients, and increased in 15 (22.7%). Lymphocyte counts were reduced or normal in 58 (87.9%) patients, and increased in 8 (12.1%) patients. Most patients had elevated CRP and erythrocyte sedimentation, and some patients had normal ranges of liver function, renal function, and electrolytes. Ten severely ill patients had elevated liver enzymes and cardiac enzymes (especially K and CKMB). There were significant differences in inflammatory markers among patients of different nationalities. Arterial blood gas analysis in 56 (84.8%) mild patients showed no significant abnormalities. Chest CT scans of 66 patients showed single or multiple small patchy shadows and interstitial changes, which were evident in the extrapulmonary band. All patients were hospitalized and isolated for treatment. Of the 66 patients received oxygen therapy, most of them received antiviral therapy (abidol/Kaletra, 0.2 g po tid/2 pills po bid) and interferon (aerosol inhalation), few patient received antibacterial therapy (Tanreqing, 20 mL ivgtt qd) and glucocorticoid therapy (methylprednisolone, 40 mg ivgtt bid), and supplemented by traditional Chinese medicine treatment. Six (9.1%) severely ill patients and 4 (6.1%) critically ill patients treated with non-invasive or invasive ventilator.Conclusions:The patients in this study are all imported cases. Most patients have mild clinical symptoms. The lungs show single or multiple small patchy shadows and interstitial changes, which are obvious with extrapulmonary bands. Seek medical treatment as soon as possible, and the above-mentioned symptomatic treatment scheme is effective. The overall morbidity and mortality in this region are lower than those in other parts of the province, and the mortality and critical illness rate of ethnic minority patients are lower than those of Han patients. There are significant differences in inflammatory markers such as leukocytes and lymphocytes among patients of different nationalities.

Objective: To understand the active screening of tuberculosis in schools in Guizhou province and analyze the results to provide reference for the prevention and control of tuberculosis in schools in Guizhou province. Methods: In 2017, the initiative screening and entrance examination were carried out among students in Guizhou in 2017, with "the provincial school tuberculosis screening questionnaire" issued by the provincial level.A total of 373 679 students(18.31%) from 290 schools(41.31%)were tested as strong positive by PPD test. Results: Rate of positive PPD skin test showed significant differences according to different types of school(χ2=679.62,P=0.00). the abnormal rate of X-ray chest had statistical significant difference between the students in boarding school or not(χ2=14.07,P=0.00), but had no statistical significant difference between the students in private schools and public schools(χ2=0.28,P=0.59). For the rate of suspicious symptom screening, statistical significant differences were found between the private schools and public schools(χ2=4.79,P=0.03) and boarding schools or not(χ2=23.47,P=0.00). PPD test screening was carried out among 166 691 students, 4 667 were tested as strong positive, 191 cases were found as tuberculosis (4.09%); X-ray chest X-ray screening of 104 024 people, abnormal chest radiograph of 298 people, 200 found that the number of tuberculosis cases, the detection rate was 67.11%. Symptom screening was carried out among 102 964 students, 2 272 had suspicious symptoms, 229 cases were pulmonary tuberculosis patients, the detection rate of 10.08%, three methods of screening for difference was statistically significant(χ2=262.44，P=0.00). Conclusion The school tuberculosis screening work in Guizhou province needs to be further improved, and the tuberculosis screening for college and boarding high school students should be strengthened to control the outbreak of school tuberculosis.

Aortic dissection is a urgent and dangerous disease, and the endovascular treatments can cure it in an effective and efficient way. As an important indicator of aorta remodeling, false lumen thrombosis is related to the prognosis of aortic dissection after endovascular treatment. The relationships among false lumen thrombosis after endovascular treatment and prognosis of aortic dissection, and the clinical techniques that can promote the false lumen thrombosis are reviewed in this paper. The aim is to promote a comprehensive evaluation of aorta remodeling.

Objective To observe the long-term efficacy of human fibrin sealant (FS) in the treatment of proximal type Ⅰ endoleak after endovascular aneurysm repair (EVAR) in abdominal aortic aneurysm (AAA).Methods The clinical data of 104 AAA patients with proximal type Ⅰ endoleak receiving EVAR + FS in Changhai Hospital from 2003 to 2012 was retrospectively analyzed,among those 77 cases were with less than 15 mm proximal neck,21 cases with greater than 60 degrees proximal neck angulation,37 cases with severe calcification or thrombosis in proximal neck.After failure of conventional endoleak therapy FS was injected through AAA catheter and long-term efficacy was evaluated by CTA during the follow-up.Results Intra-sac pressure decreased significantly after FS injection.Three patients (2.9％)died perioperatively.Postoperative 1'-,3' and 5 year survival rate was 91.8％,80.6％ and 60.2％respectively.Maximum diameter of AAA decreased from (58.78 ± 13.41) mm to (52.6-± 12.2) mm.There was no FS injection related complications.Conclusion Intra-sac injection of FS is an effective,economical and safe method for treating post-EVAR endoleak,especially for AAA with relatively short and twisted aneurysm neck.

Objective To summary the experience of AngioJet mechanical thrombectomy for the treatment of acute deep venous thrombosis (DVT) of lower extremity.Methods Clinical data of 28 patients suffering from acute DVT of lower extremities treated by AngioJet mechanical thrombectomy were analyzed retrospectively from October 2013 to February 2015.Venous recanalization was graded by a thrombus score based on pre-and post-treatment venography.Follow-up was performed by Doppler ultrasound and clinical evaluation.Results Twelve patients were planted temporary vena cava filters.The average length of hospitalization was (3.9 ± 1.1) days.The average operation time was (1.2 ± 0.4) hours.The dosage of urokinase was (320 ± 120) × 104 U and heparin was (46 ± 10)mg during surgery.The average reduction of hemoglobin was (7.5 ± 2.6) g/L.Two patients (Grade Ⅰ thrombolysis) were converted to catheter-directed thrombolysis (CDT).There were 10 (35.7％) cases achieving grade Ⅱ and 16 (57.1％) cases achieving grade Ⅲ,respectively.Technique success rate were 92.9％.Minor bleeding events occurred in 2 patients.Nine (32.1％) patients had stents implanted.One year follow-up found patent deep venous in 26 (92.9％) patients and stent patency rate was 88.9％ (1/9).Two (7.1％) cases developed mild postthrombotic syndrome (PTS).Conclusion AngioJet is a safe and effective tool to treat acute DVT accelerating thrombolytic therapy,and reducing bleeding complications.