Effects of Bisphenol A and Its Substitute, Bisphenol F, on the Gut Microbiota in Mice / 生物医学与环境科学（英文）

OBJECTIVE@#The aim of this study was to assess the impact of bisphenol A (BPA) and its substitute, bisphenol F (BPF), on the colonic fecal community structure and function of mice.@*METHODS@#We exposed 6-8-week-old male C57BL/6 mice to 5 mg/(kg∙day) and 50 μg/(kg∙day) of BPA or BPF for 14 days. Fecal samples from the colon were analyzed using 16S rRNA sequencing.@*RESULTS@#Gut microbiome community richness and diversity, species composition, and function were significantly altered in mice exposed to BPA or BPF. This change was characterized by elevated levels of Ruminococcaceae UCG-010 and Oscillibacter and decreased levels of Prevotella 9 and Streptococcus. Additionally, pathways related to carbohydrate and amino acid metabolism showed substantial enrichment.@*CONCLUSION@#Mice exposed to different BP analogs exhibited distinct gut bacterial community richness, composition, and related metabolic pathways. Considering the essential role of gut bacteria in maintaining intestinal homeostasis, our study highlights the intestinal toxicity of BPs in vertebrates.

Tripterine promotes pyroptosis of liver cancer cells by regulating ATF4/caspase-3/GSDME signaling pathway / 中国药理学通报

Aim To explore the new mechanism of triptolide (TRI) inhibiting the progression of hepatocellular carcinoma (HCC) . Methods Different concentrations (0, 0 . 5, 2, and 8 jjunol • L~) of TRI were administered to act on liver cancer cells, and then the cell phenotypes and possible mechanisms were explored using experimental methods such as CCK-8, cell cloning, Transwell, and protein immunoblotting; siRNA was used to interfere with the target gene GSDME and its role was determined. Finally, the mechanism of TRI inhibiting the growth of HCC cells in vivo was validated using a transplanted tumor model. Results TRI could inhibit the proliferation, cloning, and invasion of HCC cells, and promote cell apoptosis. Immunoblotting results showed that the expression of GSDME was significantly upregulated in HepG2 or He-pal-6 hepatocellular carcinoma after TRI treatment, while the expression of cleaved caspase-3 and PARP also significantly increased. Knocking out GSDME could partially reverse TRI-induced cell apoptosis. At the same time, cells knocked down by GSDME had stronger cloning and migration abilities, and the apoptosis rate was reduced compared to the TRI treatment group alone. In vivo experiments showed that TRI inhibited HCC tumor growth, and the TRI + siGSDME group had a faster tumor growth rate than the TRI treatment group alone did. In addition, after TRI stimulation, p-eIF2a and ATF4 in HepG2 and Hepal-6 cells significantly increased. The immunofluorescence results showed a dose-dependent increase in the number of ATF4 positive cells in HepG2 and Hepal-6 cells after TRI stimulation. Conclusion The inhibitory effect of TRI on the growth and invasion of liver cancer cells may be related to its regulation of the ATF4/caspase-3/GSDME signaling pathway and promotion of liver cancer cell apoptosis.

Research progress in ferroptosis pathways and ubiquitination modification of ferroptosis-related molecules / 中国药理学通报

Ferroptosis is an iron-dependent cell death caused by phospholipid peroxidation damage of polyunsaturated fatty acids on cell membranes and involves several pathways, including the iron homeostasis regulatory pathway, the cystine glutamate reverse transporter (system Xc) pathway and the voltage-dependent anion channel (VDAC) pathway. Ferroptosis is involved in the development of several diseases (e. g. myocardial infarction, stroke, cancer and degenerative diseases). The ubiquitination is an important post-translational modification of various protein molecules in the organism. Studies have shown that regulating the ubiquitination of ferroptosis pathway-related molecules can control cellular ferroptosis. Targeting the ubiquitination of ferroptosis pathway-related molecules can effectively promote or inhibit ferroptosis, which is expected to be a new strategy for the treatment of cancer or cardiovascular diseases. In this paper we review the progress of the ferroptosis pathways and the ubiquitination modification of ferroptosis-related molecules.

Realationship between personality impulsivity and aggressivity in adolescents： the effecting path of sibling relationships / 四川精神卫生

BackgroundIn China， the structure shift from just one-child family to both one-child and more-than-one-child families is happening. Exploring how the sibling relationships effect between adolescent personality impulsivity and aggressivity is of great significance for promoting adolescent mental health as well as maintaining social harmony and stability. ObjectiveTo investigate the effecting path of sibling relationships between personality impulsivity and aggressivity in adolescents， so as to provide references for the prevention of violent and aggressive behavior in adolescents. MethodsFrom February to April， 2023， a total of 1 200 students with sibling relationships from 12 primary and secondary schools in a county of Sichuan province were included by random sampling. Barratt Impulsivity Scale （BIS-11）， Chinese Version of Buss & Perry Aggression Questionnaire （AQ-CV）， and Sibling Relationship Questionnaire （SRQ） were used for cross-sectional investigation. Pearson Correlation Analysis was used to analyze the correlation between the scores of these scales. Bootstrap method was used to test the effecting path of sibling relationships between personality impulsivity and aggressivity. ResultsThe total score of BIS-11 was positively correlated with that of AQ-CV as well as the scores of conflict and competition dimensions in SRQ （r=0.485、0.276、0.280，P<0.01）， while negatively correlated with the score of warmth/intimacy dimension in SRQ （r=-0.383， P<0.01）. The total score of AQ-CV was positively correlated with the scores of conflict and competition dimensions in SRQ （r=0.387， 0.340， P<0.01）， while negatively correlated with the score of warmth/intimacy dimension in SRQ （r=-0.304， P<0.01）. Within SRQ， negative correlations could be observed between the score of warmth/intimacy and scores of conflict and competition （r=-0.307， -0.375， P<0.01）， whereas positive correlation could be observed between the score of conflict and that of competition （r=0.267， P<0.01）. The total effect of personality impulsivity level on aggressivity level in adolescent was 0.480 （P<0.01）. Sibling relationships played a mediating role between personality impulsivity and aggressivity in adolescents. Meanwhile， the indirect effect values of warmth/intimacy， conflict and competition were 0.054， 0.075 and 0.062， with the effect values accounting for 11.21%， 15.70% and 12.93%， respectively. ConclusionThe personality impulsivity of adolescents can directly affect their aggressivity， and sibling relationships may act as an important channel connecting personality impulsivity and aggressivity. ［Funded by 2023 Project of the Psychology and Behavioral Science Research Center of the Deyang Federation of Social Sciences （number， XLYXW2023305）］

Comparison of aspirin treatment strategies for primary prevention of cardiovascular diseases: A decision-analytic Markov modelling study / 北京大学学报(医学版)

OBJECTIVE@#To compare the expected population impact of benefit and risk of aspirin treatment strategies for the primary prevention of cardiovascular diseases recommended by different guidelines in the Chinese Electronic Health Records Research in Yinzhou (CHERRY) study.@*METHODS@#A decision-analytic Markov model was used to simulate and compare different strategies of aspirin treatment, including: Strategy ①: Aspirin treatment for Chinese adults aged 40-69 years with a high 10-year cardiovascular risk, recommended by the 2020 Chinese Guideline on the Primary Prevention of Cardiovascular Diseases; Strategy ②: Aspirin treatment for Chinese adults aged 40-59 years with a high 10-year cardiovascular risk, recommended by the 2022 United States Preventive Services Task Force Recommendation Statement on Aspirin Use to Prevent Cardiovascular Disease; Strategy ③: Aspirin treatment for Chinese adults aged 40-69 years with a high 10-year cardiovascular risk and blood pressure well-controlled (< 150/90 mmHg), recommended by the 2019 Guideline on the Assessment and Management of Cardio-vascular Risk in China. The high 10-year cardiovascular risk was defined as the 10-year predicted risk over 10% based on the 2019 World Health Organization non-laboratory model. The Markov model simulated different strategies for ten years (cycles) with parameters mainly from the CHERRY study or published literature. Quality-adjusted life year (QALY) and the number needed to treat (NNT) for each ischemic event (including myocardial infarction and ischemic stroke) were calculated to assess the effectiveness of the different strategies. The number needed to harm (NNH) for each bleeding event (including hemorrhagic stroke and gastrointestinal bleeding) was calculated to assess the safety. The NNT for each net benefit (i.e., the difference of the number of ischemic events could be prevented and the number of bleeding events would be added) was also calculated. One-way sensitivity analysis on the uncertainty of the incidence rate of cardiovascular diseases and probabilistic sensitivity analysis on the uncertainty of hazard ratios of interventions were conducted.@*RESULTS@#A total of 212 153 Chinese adults, were included in this study. The number of people who were recommended for aspirin treatment Strategies ①-③ was 34 235, 2 813, and 25 111, respectively. The Strategy ③ could gain the most QALY of 403 [95% uncertainty interval (UI): 222-511] years. Compared with Strategy ①, Strategy ③ had similar efficiency but better safety, with the extra NNT of 4 (95%UI: 3-4) and NNH of 39 (95%UI: 19-132). The NNT per net benefit was 131 (95%UI: 102-239) for Strategy ①, 256 (95%UI: 181-737) for Strategy ②, and 132 (95%UI: 104-232) for Strategy ③, making Strategy ③ the most favorable option with a better QALY and safety, along with similar efficiency in terms of net benefit. The results were consistent in the sensitivity analyses.@*CONCLUSION@#The aspirin treatment strategies recommended by the updated guidelines on the primary prevention of cardiovascular diseases showed a net benefit for high-risk Chinese adults from developed areas. However, to balance effectiveness and safety, aspirin is suggested to be used for primary prevention of cardiovascular diseases with consideration for blood pressure control, resulting in better intervention efficiency.

Research progress on relationship between dietary inflammatory index and mental disorder / 四川精神卫生

The purpose of this paper is to review the relationship between dietary inflammatory index and mental disorders， so as to provide references for nutritional interventions for patients with mental disorders. The high disability rate and intractability of mental illness bring huge economic burden and medical pressure to patients' families and society. Dietary nutrition is crucial to the rehabilitation of mental illness. As a new type of index to measure food pro-inflammatory index， dietary inflammatory index is closely related to the occurrence and development of mental illness. Therefore， this paper reviews the development， calculation and correlation with mental illness of dietary inflammatory index.

Reyanning Mixture on Asymptomatic or Mild SARS-CoV-2 Infection in Children and Adolescents: A Randomized Controlled Trial / 中国结合医学杂志

OBJECTIVE@#To assess the effect and safety of Reyanning Mixture (RYN) in treating asymptomatic or mild severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in children and adolescents.@*METHODS@#This is a prospective, open-label, randomized controlled trial. Patients aged 1-17 years and diagnosed with asymptomatic or mild coronavirus disease-2019 (COVID-19) were assigned to an intervention group (RYN plus standard care) and a control group (standard care) according to a randomization list. The primary outcomes were SARS-CoV-2 negative conversion time. Secondary outcomes included negative conversion rate on days 3 and 7, hospital length of stay, symptom relief rate, new-onset symptoms of asymptomatic infected patients, and progressive disease rate. The cycle threshold (Ct) values of ORF1ab or N genes were also tested.@*RESULTS@#A total of 214 patients in the intervention group and 217 in the control group were analyzed. The SARS-CoV-2 negative conversion time was significantly shortened in the intervention group [5 days (interquartile range (IQR): 5-6) vs. 7 days (IQR: 6-7), P<0.01]. By days 3 and 7, the negative conversion rates were significantly higher in the intervention group (day 3: 32.7% vs. 21.2%, P=0.007; day 7: 75.2% vs. 60.8%, P=0.001). Ct values significantly increase on day 2 [ORF1ab gene: 35.62 (IQR: 29.17-45.00) vs. 34.22 (IQR: 28.41-39.41), P=0.03; N gene: 34.97 (IQR: 28.50-45.00) vs. 33.51 (IQR: 27.70-38.25), P=0.024] and day 3 [ORF1ab gene: 38.00 (IQR: 32.72-45.00) vs. 35.81 (IQR: 29.96-45.00), P=0.003; N gene: 37.16 (IQR: 32.01-45.00) vs. 35.26 (IQR: 29.09-45.00), P=0.01]. No significant difference was found in hospital length of stay between the two groups (P>0.05). Symptoms of cough were significantly improved (82.2% vs. 70.0%, P=0.02) and wheezing was significantly reduced (0.7% vs. 12.9%, P<0.01) in the intervention group compared with the control group. During the trial, no disease progression or serious adverse events were reported.@*CONCLUSION@#Adding RYN to standard care may be a safe and effective treatment for children with asymptomatic and mild SARS-CoV-2 infection. (Registration No. ChiCTR2200060292).

Selection criteria of community mentors for postgraduates in general practice / 中华全科医师杂志

Objective:To establish selection criteria of community mentors for postgraduates in general medicine.Methods:A subject index system of selection criteria of community tutors for general practice postgraduates was drafted and refined based on literature retrieving and in-depth interviews during January to December 2020. Twenty experts in general practice related fields were invited for two rounds of Delphi consultation. Analytic hierarchy process was used to calculate index weight coefficient and consistency test; and the developed selection criteria were evaluated.Results:Through the in-depth interviews with 11 general practice faculty and 11 general practice postgraduates, the following five first-level thematic frameworks were refined: (1) the professional qualities; (2) the basic qualities; (3) the clinical ability; (4) the teaching ability; (5) the scientific research ability. After two rounds of Delphi expert consultation, the selection criteria of community tutors for postgraduates in general practice were finally constructed, including 5 first-level indicators (professional quality, basic quality, medical practice ability, teaching and guidance ability, academic research ability) and 28 second-level indicators. The positive coefficients of experts were 85% and 100%; the expert authority coefficients were 0.825 and 0.860; and the expert opinion coordination coefficients were 0.486 and 0.515, respectively (all P<0.05). the weight coefficients of the five first-level indicators were 0.345, 0.210, 0.138, 0.210 and 0.097, respectively. Conclusion:The criteria and index system on the selection of community mentors for general practice postgraduates has been successfully developed in the study.

Related factors of three-vessel disease in patients with stable coronary artery disease / 中华全科医师杂志

Objective:To analyze the risk factors of three-vessel disease (TVD) in patients with stable coronary artery disease (SCAD).Methods:The clinical data of 447 patients with SCAD diagnosed in Zhongshan Hospital from May 2019 to April 2020 were retrospectively analyzed, including 108 cases with the single-vessel disease (SVD), 136 cases with the two-vessel disease, and 203 cases with three-vessel disease. The general data and hematological indexes were compared between patients with SVD and those with TVD; the related factors for TVD in SCAD patients were analyzed with univariate and multivariate logistic regression.Results:There were 244 males (78.5%) and 67 females (21.5%) with a median age of 57 years (64, 69). Univariate analysis showed that there were significant differences in diabetes history ( χ2=7.75, P=0.005), uric acid ( Z=-2.10, P=0.036), glycosylated hemoglobin ( Z=-2.77, P=0.006) and high density lipoprotein cholesterol (HDL-C) ( Z=-2.99, P=0.003) levels between SVD and TVD groups. Multivariate analysis showed that the high level of blood uric acid ( OR=1.01, 95% CI: 1.00-1.01, P<0.05) and the low level of HDL-C ( OR=3.29, 95% CI:1.23-8.85, P<0.05) were related risk factors of TVD. Conclusion:High blood uric acid level and low HDL-C level are related factors for TVD in patients with SCAD.

Early thrombotic risks and prophylactic anticoagulation after liver transplantation / 中华器官移植杂志

In early stage after liver transplantation(LT), coagulation function of recipients stays in a fragile balance. Affected by a variety of complex mechanisms, blood is usually hypercoagulable. An imbalance between coagulation factors and physiological anticoagulants, elevated level of vWF, an occurrence of fibrinolysis inhibition and dosing of immunosuppressive agents cause a hypercoagulable state in an early stage after LT. Blood hypercoagulability may lead to such thrombotic complications as hepatic artery, portal vein and deep vein thromboses. Some studies have demonstrated that postoperative prophylactic anticoagulation has some effect in reducing the risks of early postoperative thrombosis. However, there is still a great lack of high-quality evidence. This review summarized the latest researches on early coagulation dysfunction, thrombosis and preventive anticoagulation after LT.

Effects of 21-hydroxylase deficiency on male fertility / 中华内分泌代谢杂志

Congenital adrenal hyperplasia(CAH) is a group of autosomal recessive disorders caused by deficiency of specific enzymes in the adrenocortical hormone synthesis pathway, resulting in impaired corticosteroid synthesis. 21-hydroxylase deficiency is the most common type of CAH, and the disorder can lead to impaired fertility in patients. Most current studies have focused on fertility problems in female CAH patients. The most common causes of impaired fertility in men with 21-OHD include testicular adrenal rest tumors(TART), low gonadotropin secretion, and inappropriate glucocorticoid therapy. This article reviews the causes of impaired fertility and its treatment in male patients with 21-OHD, with the aim of providing guidance for improving the fertility of male patients with 21-OHD.

Efficacy of vitamin D adjuvant therapy for prevention of spontaneous bacterial peritonitis in patients with decompensated cirrhosis of hepatitis B / 中华临床感染病杂志

Objective:To evaluate the efficacy of vitamin D supplementation for prevention of spontaneous bacterial peritonitis (SBP) in patients with decompensated liver cirrhosis of hepatitis B.Methods:A total of 172 patients with decompensated cirrhosis of hepatitis B admitted in Jinhua Hospital affiliated to Zhejiang University School of Medicine from January to December 2021 were randomly divided into two groups with 86 cases in each group. Patients in both groups received conventional antiviral and symptomatic treatment; while patients in the intervention group received additinal oral vitamin D drops (800 IU/d) for 6 months. After 6 months of treatment, the incidence of SBP and the serum biochemical indexes were compared between two groups. SPSS 21.0 statistical software was used for data analysis.Results:After 6 months of treatment, the incidence of SBP in the intervention group(5.81%, 5/86) was significantly lower than that in control group(30.23%, 26/86)( χ2=19.210, P<0.01). The serum 25-(OH)D level in intervention group was significantly higher than that in the control group ( t=13.425, P=0.018), while the levels of CRP, PCT and IL-6 in intervention group were significantly lower than those in control group ( t=17.312, 10.353 and 12.218, P<0.01 or <0.05). Conclusion:Vitamin D adjuvant therapy can increase serum 25-(OH)D level, decrease serum CRP, PCT and IL-6 levels, and effectively reduce the incidence of SBP in patients with decompensated cirrhosis of hepatitis B.

Association of serum leptin and the risk of acute exacerbation of chronic obstructive pulmonary disease / 中国医师杂志

Objective:To analyze the association between serum leptin and the risk of acute exacerbation of chronic obstructive pulmonary disease (COPD).Methods:The clinical data of 127 COPD patients admitted to the Ninth People′s Hospital of Suzhou from November 2019 to December 2021 were retrospectively analyzed. According to whether acute exacerbation occurred in COPD patients, they were divided into acute exacerbation group (35 cases) and stable group (92 cases). General data of all patients were collected, including gender, age, body mass index (BMI), education level, disease course, smoking history, hypertension, diabetes, pneumonia, asthma and treatment methods. The forced expiratory volume in the first second/forced vital capacity (FEV 1/FVC), partial pressure of carbon dioxide (PCO 2), arterial blood pH and laboratory indicators [serum leptin, tumor necrosis factor (TNF-α) and C-reactive protein (CRP) levels] were detected. Receiver operating characteristic (ROC) curve was used to analyze the value of serum leptin, TNF-α and CRP in predicting acute exacerbation in COPD patients, and non-conditional logistic stepwise regression was used to analyze the risk factors of acute exacerbation in COPD patients. Results:Compared with the stable group, the proportion of patients with BMI<18.5 kg/m 2, complicated with pneumonia and asthma was higher, and the levels of serum leptin, TNF-α and CRP were also higher in acute exacerbation group (all P<0.05); ROC analysis showed that leptin≥3.683 ng/ml, TNF-α≥95.746 pg/ml and CRP≥22.405 mg/L were the best cut-off values of acute exacerbation in COPD patients(all P<0.05). Logistic regression analysis showed that BMI<18.5 kg/m 2, combined pneumonia, combined asthma, leptin≥3.683 ng/ml, TNF-α≥95.746 pg/ml, CRP≥22.405 mg/L were the risk factors for acute exacerbation of COPD patients(all P<0.05). Conclusions:Serum leptin level is elevated in COPD patients, and elevated serum leptin can lead to increased risk of acute exacerbation of COPD. In addition, low BMI, combined pneumonia or asthma, abnormally elevated TNF-α and CRP may be risk factors for acute exacerbation of COPD patients.

Effect of basic psychological needs satisfaction on phubbing behavior among high school students: the mediating effect of fear of missing out and mobile phone addiction / 中华行为医学与脑科学杂志

Objective:To investigate the mediating roles of the fear of missing out and mobile phone addiction between the basic psychological needs satisfaction and phubbing behavior among high school students.Methods:In April 2022, a cross-sectional design survey was conducted on 14 666 high school students. All participants were evaluated by the basic psychological needs scales(BPNS), generic scale of phubbing(GSP), trait-state fear of missing out scale(T-S FOMOS) and mobile phone addiction index(MPAI). The SPSS 26.0 software was used to conduct common method deviation test, descriptive statistics, and correlation analysis.PROCESS 4.1 was used to construct the model, and the Bootstrap method was used to test for mediating effects.Results:(1)Among the 14 036 high school students, there were 1 752 (12.48%) students who were addicted to mobile phones.There were significant differences in gender in the scores including BPNS(boy: 4.43±0.79, girl: 4.36±0.79), GSP(boy: 2.72±1.01, girl: 2.76±1.03) and T-S FOMOS(boy: 1.73±0.60, girl: 1.84±0.64), ( t=5.22, -10.58, -2.78, all P<0.01). Among different grades, there were significant differences in the scores of BPNS, T-S FOMOS, MPAI, and GSP( F=25.43, 39.50, 53.45, 14.59, all P<0.01). (2)Basic psychological needs score were positively correlated with fear of missing out, mobile phone addiction and phubbing( r=-0.432--0.294, all P<0.01). Phubbing were negatively correlated with fear of missing out and mobile phone addiction( r=0.744, 0.538, both P<0.01). Fear of missing out were negatively correlated with mobile phone( r=0.646, P<0.01). (3)The basic psychological needs satisfaction had a direct effect on phubbing behavior, and the effect value was -0.188 (95% CI: -0.173--0.204). The mediating effect of fear of missing out between the basic psychological needs satisfaction and phubbing behavior was -0.035(95% CI: -0.028--0.042). The mediating effect of mobile phone between the basic psychological needs satisfaction and phubbing behavior was -0.203(95% CI: -0.191--0.214). Fear of missing out and mobile phone addiction played a chain mediating role between them, and the mediating effect value was -0.134(95% CI: -0.125--0.143), which accounted for 23.93%(-0.134/-0.560) of the total effect. Conclusion:The high level basic psychological needs satisfaction can alleviate the occurrence of phubbing behavior. It may be achieved by decreasing fear of missing out and reducing mobile phone addiction.

Discussion on the zero-calibration and the zero line in the measurement of central venous pressure and invasive arterial blood pressure / 中华危重病急救医学

Objective:To figure out the timing of zeroing and the location of the zero line in the central venous pressure (CVP) monitoring and invasive arterial blood pressure (IBP) monitoring, and to provide scientific and accurate data for patients management.Methods:The liquid vessel models were used to simulate the pressure measurement process of the continuous pressure monitoring system. Based on the theory of fluid mechanics and the knowledge of blood pressure physiology and cardiovascular anatomy, the composition and influencing factors of the pressure in the fluid-filled catheter system during the zeroing and placing the transducer in the zero line of CVP and IBP, were analyzed.Results:The pressure in the liquid-filled catheter system was composed of atmospheric pressure, the pressure of pumping bag, the gravity of the water column (the vertical distance between the liquid level of Murphy's dropper and pressure transducer, ΔH), and the resistance of tube wall. This pressure value is set as a pressure of 0 mmHg (1 mmHg ≈ 0.133 kPa). In the process of pressure measurement, when the pressure transducer was placed at a horizontal position of 10 cm below the highest liquid level of the vessel, the pressure measured at different catheter tip positions was all 10 cmH 2O (1 cmH 2O ≈ 0.098 kPa); When the pressure transducer was placed at the horizontal position of the highest liquid level of the vessel, the measured pressure is 0 mmHg. Conclusion:Zeroing should repeatedly be performed only when one or more conditions (atmospheric pressure, pressure of pumping bag, gravity of ΔH water column and resistance of tube wall) are changed. In the measurement process, the pressure transducer should be placed at the zero line position at any time to eliminate the influence of hydrostatic pressure and to ensure the objective and accurate value.

Sick individuals and sick populations: Yunnan unexplained sudden death from the perspective of population medicine / 中华地方病学杂志

Individuals and populations affected by Yunnan unexplained sudden death have different causes, so different research methods and control strategies should be adopted for these two different causes. By reviewing relevant research literature on Yunnan unexplained sudden death, we reinterpret some characteristics of the disease from the perspective of population medicine. At the same time, it is found that some studies have shown that residents in areas where sudden death occurs have a higher proportion of myocardial damage compared to control areas, making them a population with basic sickness. Population medicine methods can be used to conduct etiology research and disease prevention and control.

Screening of DNA methylation sites and construction of differential methylation profiles in human hepatic stellate cells fibrosis and autophagy induced by sodium arsenite / 中华地方病学杂志

Objective:To analyze DNA methylation sites related to fibrosis and autophagy in human hepatic stellate cells (LX-2 cells) induced by sodium arsenite (NaAsO 2), and to screen specific methylation genes related to fibrosis and autophagy. Methods:Genome-wide DNA detection was performed using Illumina Infinium Methylation EPIC BeadChips (850K methylation chip) to derive differential methylation sites in LX-2 cells (control group) and the fibrosis and autophagy models of LX-2 cells induced by NaAsO 2(low, medium and high dose groups: the final concentrations were 5, 10, 15 μmol/L NaAsO 2, respectively, after 48 h intervention). Gene ontology (GO) function enrichment analysis and Kyoto encyclopedia of genes and genomes (KEGG) signaling pathway enrichment analysis were used to explore gene function. Results:The model of cell fibrosis and autophagy was established successfully in high dose group. The results of 850K methylation chip detection showed that there were 25 817 significant different methylation sites between the high dose group and the control group, including 12 083 hypermethylation sites and 13 734 hypomethylation sites. GO function enrichment analysis showed that the molecular functions of differentially methylated genes mainly included protein binding, ion binding, catalytic activity, enzyme binding. KEGG signaling pathway enrichment analysis showed that the pathways involved in differentially methylated genes mainly included metabolic pathway, cancer pathway, phosphatidylinositol-3-kinase-protein kinase B (PI3K-Akt) signaling pathway, endocytosis, and mitogen activated protein kinase (MAPK) signaling pathway. In the promoter region, 11 and 29 differentially methylated genes related to fibrosis and autophagy were screened, respectively.Conclusions:A large number of differential methylation sites exist in the process of NaAsO 2 induced fibrosis and autophagy of LX-2 cells. Specific methylation genes related to fibrosis and autophagy are screened out.

Study on post competency index system of public health professionals / 中华医学教育探索杂志

Objective:To clarify the elements of post competency of public health professionals and technical personnel, and construct a post competency index system of public health professionals and technical personnel.Methods:Referring to the Hay Group Competency Dictionary and literature review method, the post competency information elements of public health professional and technical personnel were constructed, and were revised through the expert consultation method. Unit-level stratified sampling was used, and 120 public health professionals were invited to evaluate the importance of the elements. SPSS 26.0 was used for data analysis, the continuous data were expressed in ( x ± s) mode, and Pearson was used to study the degree of correlation of each dimension. Finally, the post competency index system for public health positions was constructed by using the factor analysis method to extract the common factor as the first-level index. Results:The index system contained 7 first-level indicators (43 items), including public health practice skills, clinical practice skills, professional basic subject knowledge, personal professional accomplishment, public health authority and management ability, public health leadership, and public health methodology knowledge. Its weight coefficients (%) were 20.03, 17.48, 15.89, 15.68, 13.98, 12.82 and 4.11, respectively. The elements with the highest materiality scores were personal protection, responsibility and professionalism.Conclusion:Personal protection and other public health practical skills and personal professional qualities such as sense of responsibility and professionalism are the core elements of public health positions, and it is recommended to strengthen the training of public health professionals' public health practical skills in actual work, and pay attention to the cultivation of personal professional qualities, so as to establish a better team of public health talents.

Research progress of Chinese materia medica in inhibiting malignant biological behavior of lung cancer stem cells / 国际中医中药杂志

Chinese materia medica can inhibit the proliferation, invasion, migration and expression of drug-resistant proteins of lung cancer stem cells (LCSCs), and induce apoptosis and delay self-renewal, as well as exert anti-tumor effects by interfering with their ecological niche, immune microenvironment and aerobic glycolysis, etc. The biomarkers involved mainly include CD133, CD44, ALDH and ABCG2, while the related signaling pathways are Wnt/β-catenin, Hedgehog, and Notch. The research on the intervention of LCSCs by Traditional Chinese Medicine (TCM) is generally few, mostly concentrated in basic research, and the selected experimental indicators have a high repetition rate, involving fewer cell types and signaling pathways; there is a relative lack of clinical trials, which lack an organic connection with basic experiments. In the future, the quality of research is expected to be improved, and in-depth study of TCM with anti-lung cancer stem cell effect should be carried out, with the purpose to promote the precise treatment of lung cancer.

Berberine inhibits autophagy and promotes apoptosis of fibroblast-like synovial cells from rheumatoid arthritis patients through the ROS/mTOR signaling pathway / 南方医科大学学报

OBJECTIVE@#To evaluate the regulatory effect of berberine on autophagy and apoptosis balance of fibroblast-like synoviocytes (FLSs) from patients with in rheumatoid arthritis (RA) and explore the mechanism.@*METHODS@#The inhibitory effect of 10, 20, 30, 40, 50, 60, 70, and 80 μmol/L berberine on RA-FLS proliferation was assessed using CCK-8 method. Annexin V/PI and JC-1 immunofluorescence staining was used to analyze the effect of berberine (30 μmol/L) on apoptosis of 25 ng/mL TNF-α- induced RA-FLSs, and Western blotting was performed to detect the changes in the expression levels of autophagy- and apoptosis-related proteins. The cells were further treated with the autophagy inducer RAPA and the autophagy inhibitor chloroquine to observe the changes in autophagic flow by laser confocal detection of mCherry-EGFP-LC3B. RA-FLSs were treated with the reactive oxygen species (ROS) mimic H2O2 or the ROS inhibitor NAC, and the effects of berberine on ROS, mTOR and p-mTOR levels were observed.@*RESULTS@#The results of CCK-8 assay showed that berberine significantly inhibited the proliferation of RA-FLSs in a time- and concentration-dependent manner. Flow cytometry and JC-1 staining showed that berberine (30 μmol/L) significantly increased apoptosis rate (P < 0.01) and reduced the mitochondrial membrane potential of RA-FLSs (P < 0.05). Berberine treatment obviously decreased the ratios of Bcl-2/Bax (P < 0.05) and LC3B-II/I (P < 0.01) and increased the expression of p62 protein in the cells (P < 0.05). Detection of mCherry-EGFP-LC3B autophagy flow revealed obvious autophagy flow block in berberine-treated RA-FLSs. Berberine significantly reduced the level of ROS in TNF-α-induced RA-FLSs and upregulated the expression level of autophagy-related protein p-mTOR (P < 0.01); this effect was regulated by ROS level, and the combined use of RAPA significantly reduced the pro-apoptotic effect of berberine in RA-FLSs (P < 0.01).@*CONCLUSION@#Berberine can inhibit autophagy and promote apoptosis of RA-FLSs by regulating the ROS-mTOR pathway.