Radiomics combined with CT features for distinguishing mycoplasma and non-mycoplasma pneumonia in children / 中国介入影像与治疗学

Objective To observe the value of radiomics combined with CT features for distinguishing mycoplasma pneumonia(MP)and non-MP in children.Methods Data of 153 children with pneumonia were retrospectively analyzed.The children were divided into MP group(n=101)and non-MP group(n=52)according to mycoplasma RNA detection,and also were divided into training set(n=107,including 71 MP and 36 non-MP)and validation set(n=46,including 30 MP and 16 non-MP)at the ratio of 7∶3.CT findings were compared between groups.Six best CT features were selected in training set using F test algorithm,and a CT model was constructed using logistic regression(LR)method.The best radiomics features were extracted and screened in training set,and machine learning(ML)models were constructed using LR,support vector machine(SVM),random forest(RF),linear discriminant analysis(LDA)and stochastic gradient descent(SGD)classifiers,respectively.Based on the best CT features and radiomics features,CT-ML models were constructed using the above classifiers.Receiver operating characteristic curves were drawn,and the areas under the curve(AUC)were calculated,the efficacy of each model for distinguishing MP and non-MP was evaluated.Results Lesions involved the upper,middle and lower lobe of right lung,thickened bronchial wall,tree bud sign and edge retract sign were the best CT features.AUC of CTLR was 0.710,of MLLR,MLSVM,MLRF,MLLDA and MLSGD in validation set was 0.715,0.663,0.623,0.706 and 0.494,respectively,and MLLR was the optimal radiomics model.AUC of CT-MLLR,CT-MLSVM,CT-MLRF,CT-MLLDA and CT-MLSGD in validation set was 0.813,0.823,0.649,0.796 and 0.665,respectively,and CT-MLSVM was the optimal CT-ML model.In training set,AUC of CT-MLSVM(0.840)was higher than that of CTLR and MLLR model(AUC=0.713,0.740,both P＜0.05).In validation set,no significant difference of AUC was found among CTLR,MLLR and CT-MLSVM(AUC=0.710,0.715 and 0.823,all P＞0.05).Conclusion Radiomics combined with CT features could effectively distinguish MP and non-MP in children.

Reliability and validity of general procrastination scale in the application of middle school students / 中华行为医学与脑科学杂志

Objective:To test the reliability and validity of the general procrastination scale (GPS) in the application of middle school students.Methods:The Chinese version of GPS, the irrational procrastination scale(IPS), and the Maslach burnout inventory(MBI) were utilized to survey 10 825 middle school students in Harbin City through stratified random sampling, and 4 498 students were retested after 4 weeks. Statistical analysis was performed using SPSS 27.0 and Mplus 8.0.Results:The entries were well differentiated.Exploratory and confirmatory factor analysis indicated that GPS was composed of two factors, including active avoidance and lack of planning.The model fit was good (CFI=0.914, TLI=0.901, RMSEA=0.069, SRMR=0.072). GPS was positively correlated with the total scores of IPS and MBI ( r=0.753, 0.677, both P<0.001). The Cronbach's α coefficient of GPS was 0.864, the folded half reliability was 0.870, and the retest reliability after 4 weeks was 0.756. Conclusion:The GPS has good reliability and validity among middle school students, which provides a standard for measuring the procrastination level of middle school students and carrying out related research.

Effects of microglia in the pathogenesis of major depressive disorder / 中华行为医学与脑科学杂志

Major depressive disorder (MDD) has become an increasingly serious public health issue, characterized by high incidence and high disability rates. It often coexists with other mental health problems and physical diseases, with a significant negative impact on patients' quality of life. In clinical practice, MDD is considered a heterogeneous disease. The complexity of the pathological mechanisms and the variability in treatment responses lead to a lack of clear therapeutic targets, which complicates the treatment process. In recent years, with advancements in neuroscience, the crucial role of microglia in the pathogenesis of MDD has been revealed. As the main immune cells in the brain, microglia are not only involved in the regulation of neuroinflammation but also play important roles in neurogenesis and neuronal regulation in MDD. This article mainly discusses the role of microglia in the pathophysiological mechanisms of MDD, aiming to provide a theoretical basis for microglia as a potential target for the treatment of MDD.

Strengthening the integration of traditional Chinese and Western medicine to promote the construction of a Chinese characteristic wound repair and regeneration system / 中国医师杂志

To promote the construction of a wound repair and regeneration system with Chinese characteristics, it is necessary to follow the principle of combining traditional Chinese and Western medicine, and integrate theory, clinical practice, and teaching. Traditional Chinese medicine emphasizes a holistic concept and the principle of dialectical treatment, while Western medicine focuses on etiological analysis and local treatment. The combination of Chinese and Western medicine can complement each other's advantages and improve treatment effectiveness. The key technological innovations in repairing and regenerating systems cover areas such as drug therapy, physical therapy, and the application of biomaterials. This article discusses the development potential and challenges of combining traditional Chinese and Western medicine in the field of wound repair and regeneration, providing new ideas and methods for the development of wound repair and regeneration. It is expected to bring better medical services and treatment effects to patients undergoing repair and regeneration.

Genomic, transcriptomic, and epigenomic analysis of a medicinal snake, Bungarus multicinctus, to provides insights into the origin of Elapidae neurotoxins

The many-banded krait, Bungarus multicinctus, has been recorded as the animal resource of JinQianBaiHuaShe in the Chinese Pharmacopoeia. Characterization of its venoms classified chief phyla of modern animal neurotoxins. However, the evolutionary origin and diversification of its neurotoxins as well as biosynthesis of its active compounds remain largely unknown due to the lack of its high-quality genome. Here, we present the 1.58 Gbp genome of B. multicinctus assembled into 18 chromosomes with contig/scaffold N50 of 7.53 Mbp/149.8 Mbp. Major bungarotoxin-coding genes were clustered within genome by family and found to be associated with ancient local duplications. The truncation of glycosylphosphatidylinositol anchor in the 3'-terminal of a LY6E paralog released modern three-finger toxins (3FTxs) from membrane tethering before the Colubroidea divergence. Subsequent expansion and mutations diversified and recruited these 3FTxs. After the cobra/krait divergence, the modern unit-B of β-bungarotoxin emerged with an extra cysteine residue. A subsequent point substitution in unit-A enabled the β-bungarotoxin covalent linkage. The B. multicinctus gene expression, chromatin topological organization, and histone modification characteristics were featured by transcriptome, proteome, chromatin conformation capture sequencing, and ChIP-seq. The results highlighted that venom production was under a sophisticated regulation. Our findings provide new insights into snake neurotoxin research, meanwhile will facilitate antivenom development, toxin-driven drug discovery and the quality control of JinQianBaiHuaShe.

Predictive value of vitamin D,sex hormones and their receptors on relapse in male patients with clinically isolated syndrome / 重庆医学

Objective To investigate the predictive value of vitamin D,sex hormones and their receptors in the development and regression of male patients with clinical isolated syndrome(CIS).Methods A total of 40 male CIS patients were included in the CIS group and 30 healthy subjects matched in age and long-term res-idence were included in the control group.The levels of vitamin D[1,25(OH)2D2 and 1,25(OH)2D3]inpe-ripheral blood of the included individuals and the first relapsed multiple sclerosis patients(MS group)were detected by ultra-high-performance liquid chromatography-tandem mass spectrometry.The levels of testoster-one(T),progesterone(P),and estradiol(E2)in peripheral blood were detected by electrochemiluminescence.Estrogen receptor(ERα,ERβ),androgen receptor(AR)and vitamin D receptor(VDR)levels in lymphocyte supernatant were detected by enzyme-linked immunosorbent assay(ELISA).Results After a median follow-up of 31.5 months,29 patients(72.5％)with CIS were converted to multiple sclerosis.Compared with pa-tients with non-recurrent CIS patients,patients with multiple sclerosis had a younger age of onset and were prone to positive oligoclonal bands.Compared with HC group,vitamin D levels were reduced in CIS patients,and the difference was statistically significant(P＜0.05).When CIS patients reverted to multiple sclerosis,se-rum levels of E2,ERα,and ERβ were elevated compared with those before relapse,and the levels of testosteroneand AR were decreased,and the difference was statistically significant(P＜0.05).Correlation analysis showed no correlation between peripheral blood levels of vitamin D,sex hormones and their receptors and EDSS in CIS patients.Conclusion Male CIS patients with younger onset age and positive oligoclonal bands are prone to transition to multiple sclerosis.The decrease of vitamin D level may be associated with the onset of male CIS.Vitamin D,sex hormones,and their receptors have no predictive value in the conversion of CIS to multiple sclerosis.

Reflection on the construction of psychological crisis intervention system for college students under the background of "E (epidemic)" era / 中华医学教育探索杂志

This study deeply explores the cause of high incidence of PHE-associated psychological crisis in college students, and advocates the teaching management staffs to take full advantage of the present information technology on college students' psychological assessment, daily psychological education, and related information collection, with the current college information construction platforms. The aim is to build an early warning and intervention mechanism that is susceptible to college students' psychological crisis, and to better protect the mental health of college students.

Bioinformatics analysis of regulatory network of long non-coding RNA LOC107987438 in depressive disorder / 中华行为医学与脑科学杂志

Objective:To investigate the regulatory role of defferentially expressed LOC107987438 in the pathogenesis of depressive disorder and provide a theoretical basis for its clinical application in depressive disorder.Methods:Differential expression of LOC107987438 was verified by quantitative real-time polymerase chain reaction(qRT-PCR)in peripheral blood monocular cells(PBMCs)of 60 patients with depressive disorder and 60 health controls. In addition, its diagnostic value was assessed by receiver operating characteristic(ROC)curves. Based on the ceRNA mechanism of lncRNA, the miRDB database was applied to predict the target miRNAs of LOC107987438, and the miRNAs with target score ≥ 80 among them were screened out.The screened miRNAs were then used to predict their potential target mRNAs through four databases which were TargetScan 8.0, miRTarBase, mirDIP and miRPathDB. Moreover, the predicted target mRNAs were annotated for gene ontology(GO)function annotation and tokoyo encyclopedia of genes and genomes(KEGG) pathway enrichment analysis via ClusterProfiler 4.0.5 package of R 4.1.1. Finally, a protein-protein interaction network was constructed using the STRING 11.5 platform to retrieve the interacting genes.Results:The qRT-PCR results showed that normalized expression of LOC107987438 in PBMCs of patients with depressive disorder was higher than that in health controls(depressive disorder: 2.084±1.357, health controls: 1.000±0.660, P<0.001). The ROC curve results showed that the area under curves(AUC)of LOC107987438 was 0.759(95% CI: 0.675-0.842, P<0.05), indicating its high potential diagnostic value. Bioinformatics analysis showed that hsa-miR-4670-3p, hsa-miR-619-3p, hsa-miR-6721-5p and hsa-miR-297 were the miRNAs with high bindings to LOC107987438. The results of KEGG signaling pathway enrichment revealed that hypoxia-inducible factor 1(HIF-1)signaling pathway, phosphatidylinositol 3-kinase-AKT(PI3K-Akt) signaling pathway and erythroblastic oncogene B(ErbB) signaling pathway were closely associated with depressive disorder. Among the top ten key genes screened by the protein-protein interaction network, kirsten rats arcomaviral oncogene homolog(KRAS), androgen receptor(AR), cyclic-AMP response binding protein1(CREB1), insulin-like growth factor 1(IGF1), cyclin-dependent kinase inhibitor 1B(CDKN1B) and calcium/calmodulin-dependent protein kinase type Ⅱ alpha(CAMK2A)were strongly associated with depressive disorder. Conclusion:The establishment of ceRNA regulatory network of LOC107987438 provides a theoretical basis for exploring the pathophysiology of depressive disorders.

Experimental study on antibacterial properties and biocompatibility of Cu-Fe-Zn alloy microfilament dressings and their therapeutic effects on wound healing / 中国医师杂志

Objective:To study the antibacterial properties and in vivo and vitro biocompatibility of Cu-Fe-Zn alloy microfilament dressings, and to evaluate their wound healing promoting effect through clinical application.Methods:We evaluated the comprehensive antibacterial performance of dressings in vitro using plate counting method; After co culturing the extract of Cu-Fe-Zn alloy microfilament dressings with epidermal cells (HaCaT) and fibroblasts (NIH-3T3), their in-vitro biocompatibility was determined through the cell counting kit-8 (CCK-8) test; Further, Cu-Fe-Zn alloy microfilament dressing was applied to the wound surface of diabetes mice to test the biocompatibility of the material in vivo; Through a prospective randomized controlled trial, 50 burn and trauma patients admitted to the Burn and Plastic Surgery Department of the Third Xiangya Hospital of Central South University were selected and divided into an observation group of 25 patients and a control group of 25 patients. The observation group was treated with Cu-Fe-Zn alloy microfilament dressing, and the control group was treated with silver nanoparticle antibacterial dressing. The wound healing time and wound treatment effect of the two groups were compared.Results:The Cu 2+ release concentration of Cu-Fe-Zn alloy microfilament dressings detected by inductively coupled plasma-mass spectrometry (ICP-MS) was 1.3 μ g/ml, which had the effect of promoting the proliferation of HaCaT and NIH-3T3 cells (all P<0.05). The antibacterial rate of Cu-Fe-Zn alloy microfilament dressing against pseudomonas aeruginosa, escherichia coli and staphylococcus aureus reached 100%. The wound healing rate [(87.39±1.83)%] of diabetes mice treated with Cu-Fe-Zn alloy microfilament dressing was significantly higher than that of the control group [(58.66±3.54)%, P<0.05]. The inflammatory response of the wound tissue was relatively mild and the wound margin matrix was intact. The wound healing time of 25 patients treated with Cu-Fe-Zn alloy microfilament dressing [(23.52±10.02)d] was shorter than that of the control group [(40.84±21.22)d] ( t=17.159, P<0.001), and the overall treatment response rate of patients (96%) was significantly higher than that of the control group patients (64%) (χ 2=8.472, P=0.015). Conclusions:Cu-Fe-Zn alloy microfilament dressings have good antibacterial properties and biocompatibility, and have significant therapeutic effects on promoting wound healing. They not only effectively promote wound healing but also exert anti infection effects, and are expected to be a new type of wound repair dressing.

Relationship between perceived teacher support and academic procrastination among high school students: a chain mediating effect of future orientation and academic engagement / 中华行为医学与脑科学杂志

Objective:To explore the chain mediating effect of future orientation and academic engagement between perceived teacher support and academic procrastination in high school students.Methods:From December 2021 to February 2022, a survey was conducted on 550 high school students by the perceived teacher support questionnaire, the adolescent future orientation scale, the academic engagement scale, and the general procrastination scale-for student populations (GPS). Data were entered by EpiData 3.1 software, and SPSS 26.0 software was used to process and analyze the data by one-way ANOVA, Pearson correlation analysis and Bootstrap method test.Results:The scores of perceived teacher support, future orientation, academic engagement and academic procrastination were (3.77±0.80), (3.22±0.48), (68.11±18.08) and (52.32±11.78) respectively.The results of correlation analysis showed that academic procrastination was negatively correlated with perceived teacher support, future orientation and academic engagement ( r=-0.32, -0.38, -0.49, all P<0.01), while perceived teacher support was positively correlated with future orientation and academic engagement ( r=0.40, 0.43, both P<0.01). Future orientation was positively correlated with academic engagement ( r=0.56, P<0.01). The mediating effect analysis showed that perceived teacher support had a significant direct effect on academic procrastination (effect value: -0.10, 95% CI =-0.19--0.02), accounting for 32.26% of the total effect.The mediating effect between perceived teacher support and academic procrastination was found between future orientation and academic engagement (effect value: -0.05, 95% CI =-0.09- -0.02; effect values: -0.09, 95% CI=-0.15--0.05), accounting for 16.13% and 29.03% of the total effect respectively.Future orientation and academic engagement had a chain mediating effect between perceived teacher support and academic procrastination (effect value: -0.07, 95% CI=-0.10--0.04), accounting for 22.58% of the total effect. Conclusion:Perceived teacher support can influence academic procrastination, not only through the direct path, but also through the indirect path of future orientation and academic engagement, as well as chain mediating path between these two variables.

Mediating effect of mobile phone dependence on creativity in college students: the mediating role of sleep quality / 中华行为医学与脑科学杂志

Objective:To investigate the relationship among mobile phone dependence, sleep quality and creativity in college students and the role of sleep quality in mediating the relationship between mobile phone dependence and creativity.Methods:A simple random sampling method was used to select 2 976 undergraduate students from four universities in Heilongjiang province.The mobile phone dependence index scale, the self-rating sleep status scale and the Williams creativity tendency measure were used to assess all college students.The descriptive statistical analysis and Pearson correlation analysis in SPSS 26.0 statistical software, and the PROCESS 2.16.3 macro program was used to test the mediating effect of sleep quality.Results:(1)The total scores of creativity was (107.52±11.25), mobile phone dependence was (43.17±13.23) and sleep quality was (21.08±6.15) in college students.(2)Mobile phone dependence was significantly positively correlated with sleep quality( r=0.412, P<0.01) and negatively correlated with creativity ( r=-0.293, P<0.01). Sleep quality was significantly negatively related with creativity ( r=-0.294, P<0.01). (3)Sleep quality partly mediated the relationship between mobile phone dependence and creativity, the direct effect (effect value=-0.216) and mediating effect (effect value=-0.062) accounted for 77.7% and 22.3% of the total effect (effect value=-0.278), respectively. Conclusion:Sleep quality plays a partly mediating role in the relationship between mobile phone dependence and college students' creativity. Mobile phone dependence can not only directly predict college students' creativity, but also indirectly predict college students' creativity through sleep quality.

Analysis of Metabolites and Metabolism Pathway of Tetrahydroxystilbene Glucoside in Rats with UHPLC-MS and Mass Defect Filter Method / 中国药房

OBJECTIVE：To analyze the metabolites of tetrahydroxystilbene glucoside （THSG）and speculate its metabolism pathway in rats. METHODS ：Male SD rats were randomly divided into plasma group （n＝3），urine group （n＝3），bile group （n＝3），and tissue group （n＝9）. Each group was given single dose of THSG 200 mg/kg intragastrically. Plasma samples 10，30 min and 1，1.5，2，4 h after medication ，the unrine 0-6 h after medication ，the bile 0-4 h after medication ，the tissue of heart ， liver，spleen，lung，kidney and stomach 30 min and 1，2 h after medication （3 at each time point ）were collected respectively.After precipitated with methanol ，the metabolites of samples were analyzed and identified by UHPLC-Q-Exactive Orbitrap MS and mass loss filtration （MDF）. Its metabolism pathway was speculated. RESULTS：In the blood ，urine，bile，heart，liver，spleen， lung，kidney，stomach samples ，6，7，11，1，5，1，3，4，4 metabolites were detected ，including two phase Ⅰ（hydrolysis， hydrogenation and hydroxylation ）metabolites，18 phase Ⅱ（glucuronic acid binding and sulfation ）metabolites. There were 12 glucuronic acid binding products. CONCLUSIONS：Most of the metabolites of THSG are found in bile ，mainly glucuronic acid binding products of phase Ⅱ metabolite THSG ； main metabolic pathways involve glucose hydrolysis ， hydrogenation， hydroxylation，glucuronic acid binding and sulfation.

Predictive values of donor TIMP-2 and IGFBP7 in delayed graft function after kidney transplantation / 中华器官移植杂志

Objective:To explore the predictive values of tissue inhibitor of metalloproteinase-2 (TIMP-2) and insulin-like growth factor binding protein 7 (IGFBP7) in donor sera and lavage fluid on delayed graft function (DGF) in donation after circulatory death (DCD) kidney transplant recipients.Methods:A total of 33 eligible kidney donors and 33 corresponding recipients were recruited. Preoperative serum and renal perfusion fluid samples of donors were collected to determine the levels of TIMP-2 and IGFBP7. Patients were grouped according to whether DGF occurred after kidney transplantation and measured indicators analyzed. Independent sample t test was utilized for comparing the groups with normal distribution measurement data. And χ2 test was employed for comparing the groups with normal distribution counting data and Mann-Whitney test for comparing the groups with non-normal distribution measurement data. Receiver operating characteristic (ROC) curve and area under curve (AUC) were used for evaluating the diagnostic efficacy of indicators. Results:In donor-DGF group, lavage fluid TIMP-2, product of lavage fluid TIMP-2 and IGFBP7 (TIMP-2×IGFBP7), serum IGFBP7 and product of serum TIMP-2 and IGFBP7 (TIMP-2×IGFBP7) were higher than those in donor-non-DGF group ( P<0.05). The AUC of TIMP-2, TIMP-2×IGFBP7, serum IGFBP7 and serum TIMP-2×IGFBP7 in the diagnosis of DGF were 0.753 (95%CI 0.546~0.959), 0.747 (95%CI 0.510~0.984), 0.824 (95%CI 0.615~1.000) and 0.852 (95%CI 0.660~1.000) respectively. Conclusions:Donor serum IGFBP7, donor serum TIMP-2×IGFBP7, lavage fluid TIMP-2 and lavage fluid TIMP-2×IGFBP7 may be used for predicting the occurrence of early DGF after kidney transplantation. Among them, serum TIMP-2×IGFBP7 has the highest diagnostic efficiency and may be an excellent predictor of DGF occurrence.

Aspirin intervenes in hyperlipidemia kidney damage by blocking endoplasmic reticulum stress in podocytes / 中华肾脏病杂志

Objective@#To investigate the effects and underlying mechanisms of aspirin on endoplasmic reticulum stress in podocytes induced by hyperlipemia.@*Methods@#Cultured podocytes were divided into four groups: control group, aspirin (100 μg/ml) group, oxidized low density lipoprotein (ox-LDL, 100 μg/ml) group, aspirin+ox-LDL group. The expression of protein kinase R-1ike endoplasmic reticulum kinase (PERK), eukaryotic translation initiation factor 2α (eIF2α), activating transcription factor-4 (ATF4) and CAAT/enhancer binding protein homologous protein (CHOP) at 6 h, 12 h, 24 h, 48 h were evaluated by real-time PCR. The related proteins of p-PERK and p-eIF2α at 24 h and ATF4 at 12 h were evaluated by Western blotting, respectively.@*Results@#The expressions of PERK, eIF2α peaked at 24 h, while ATF4 and CHOP peaked at 12 h in ox-LDL group and aspirin+ox-LDL group. Compared with control group, the expressions of PERK, eIF2α, ATF4 and CHOP were significantly higher in ox-LDL group at each times (all P<0.05). Compared with ox-LDL group, the expressions of the above indicators were significantly lower in aspirin+ox-LDL group at each times (all P<0.05). At 24 h, compared with control group, the expressions of p-PERK and p-eIF2α were significantly higher in ox-LDL group (both P<0.05). Compared with ox-LDL group, the expressions of p-PERK and p-eIF2α were significantly lower in aspirin+ox-LDL group (both P<0.05). At 12 h, the expression of ATF4 protein in each group was similar to that of mRNA. There were no significant difference in the expressions of all indicators between aspirin group and control group.@*Conclusions@#Hyperlipidemia may cause endoplasmic reticulum stress in podocytes by inducing phosphorylation of PERK and eIF2α, activating ATF4 transcription and inducing high expression of CHOP. Aspirin may partially block the PERK pathway, which may have protective effects for podocytes.

Establishment of HPLC Fingerprint and Content Determination of 5 Kinds of Isoflavone Components in Sojae Semen Nigrum / 中国药房

OBJECTIVE：To establ ish the fingerprint of Sojae Semen Nigrum and content determination method of 5 kinds of isoflavones，so as to provide reference for controlling its quality better. METHODS ：HPLC method was adopted to establish the fingerprint and detect the contents of 5 kinds of isoflavones. The determination was performed on Phenomenex C 18 column with mobile phase consisted of acetonitrile- 0.12％ formic acid solution （gradient elution ）at the flow rate of 1 mL/min. The detection wavelength was set at 260 nm；the column temperature was 30 ℃ and sample size was 10 μL. Using daidzin as reference，HPLC fingerprints of 12 batches of samples were determined. The similarity of 12 batches of samples was evaluated by TCM Chromatographic Fingerprint Similarity Evaluation System （2012A） to confirm common peak. Cluster analysis and principal component analysis were performed by using SPSS 20.0 software and SIMCA 13.0 software. RESULTS ：There were 19 common peaks in HPLC fingerprints of 12 batches of samples ，the similarity of which was higher than 0.94. Totally 5 components were identified，such as daidzin ，glycitin，genistin，daidzein，genistein. Cluster analysis showed that 12 batches of Sojae Semen Nigrum were clustered into 2 categories，i.e. S 1-S3 clustered into one category ，and S 4-S12 clustered into the other category. By principal component analysis ，the contribution rates of two principle components were 53.261％ and 40.715％；accumulative contribution rate was 93.976％. The linear range of above 5 components were 5.97-191.00 µg/mL（r＝0.999 9），1.05-33.46 µg/mL（r＝0.999 9）， 8.93-285.61 µg/mL（r＝0.999 5），0.82-26.33 µg/mL（r＝0.999 9），0.93-29.64 µg/mL（r＝0.999 7），respectively. The limits of quantitation were 0.881 1，0.611 6，0.078 6，0.243 3，0.511 6 μg/mL，respectively. The limits of detection were 0.264 3，0.244 7， 0.021 4，0.124 8，0.106 7 μg/mL，respectively. RSDs of precision ，stability，reproducibility and durability tests were all lower than 5％. Recoveries were 95.15％-96.56％（RSD＝0.51％，n＝6），98.52％-103.45％（RSD＝1.88％，n＝6），95.37％-97.91％ （RSD＝0.95％，n＝6），99.75％-102.00％（RSD＝0.78％，n＝6），100.26％-103.65％（RSD＝1.21％，n＝6）. Among 12 batches of Sojae Semen Nigrum ，the contents of above 5 components were 0.178 3-0.265 9，0.021 7-0.096 2，0.288 5-0.597 2，0.014 1- 0.058 8，0.012 9-0.082 9 mg/g. CONCLUSIONS ：Established HPLC fingerprint and content determination method of 5 kinds of isoflavones can be used for quality control of Sojea Semen Nigrum. The Isoflavone components are similar ，but the contents are different among Sojae Semen Nigrum from different producing areas.

Imaging dynamic observation of COVID-19 patients cured by imported coronavirus pneumonia / 中华放射学杂志

Objective@#To explore the imaging changes of lung lesions in patients with imported COVID-19 patients when reaching the discharge standard.@*Method@#The clinical and CT imaging data of 60 patients with imported COVID-19 cured and discharged from January to February 2020 in Anhui Province were retrospectively collected. The clinical characteristics of the patients and the characteristics of chest CT images at discharge were analyzed.@*Results@#Fever (57 cases) and cough (55 cases) were the main symptoms in 60 patients. At the initial diagnosis, 5 cases were mild, 53 were ordinary, and 2 were severe. In 5 light patients, 3 cases were negative in the whole course of CT examination, 2 cases were negative in the first time and abnormal in the second time. . The first CT imaging features of 55 patients (53 common type and 2 severe type)were mainly bilateral lung involvement (51 cases), multiple lesions (33 cases), more common under the pleura (40 cases), and ground glass opacities were the most common. (55 cases). The clinical features of chest CT in clinical outcomes are that the ground glass shadow in the lung gradually fades and was completely absorbed (19 cases); the scope of ground glass shadow in the lung expanded and progressed to crazy-paving, consolidation shadow, and the lesion gradually absorbs again followed by Fibrous cord shadows (27 cases); ground-glass opacities in the lungs quickly progressed to a consolidation and then slowly absorbed . Most of the lesions were accompanied by more residual fibrous cord shadows (4 cases). In 2 severe patients, the lesions in the lungs were larger ground glass, and a big amount of fibrous foci remained after slowly absorption.@*Conclusion@#Chest CT plays an important role in the diagnosis and treatment of imported COVID-19, and the degree of lung involvement seen on CT images is in good agreement with clinical outcome.

Aspirin intervenes in hyperlipidemia kidney damage by blocking endoplasmic reticulum stress in podocytes / 中华肾脏病杂志

Objective:To investigate the effects and underlying mechanisms of aspirin on endoplasmic reticulum stress in podocytes induced by hyperlipemia.Methods:Cultured podocytes were divided into four groups: control group, aspirin (100 μg/ml) group, oxidized low density lipoprotein (ox-LDL, 100 μg/ml) group, aspirin+ox-LDL group. The expression of protein kinase R-1ike endoplasmic reticulum kinase (PERK), eukaryotic translation initiation factor 2α (eIF2α), activating transcription factor-4 (ATF4) and CAAT/enhancer binding protein homologous protein (CHOP) at 6 h, 12 h, 24 h, 48 h were evaluated by real-time PCR. The related proteins of p-PERK and p-eIF2α at 24 h and ATF4 at 12 h were evaluated by Western blotting, respectively.Results:The expressions of PERK, eIF2α peaked at 24 h, while ATF4 and CHOP peaked at 12 h in ox-LDL group and aspirin+ox-LDL group. Compared with control group, the expressions of PERK, eIF2α, ATF4 and CHOP were significantly higher in ox-LDL group at each times (all P<0.05). Compared with ox-LDL group, the expressions of the above indicators were significantly lower in aspirin+ox-LDL group at each times (all P<0.05). At 24 h, compared with control group, the expressions of p-PERK and p-eIF2α were significantly higher in ox-LDL group (both P<0.05). Compared with ox-LDL group, the expressions of p-PERK and p-eIF2α were significantly lower in aspirin+ox-LDL group (both P<0.05). At 12 h, the expression of ATF4 protein in each group was similar to that of mRNA. There were no significant difference in the expressions of all indicators between aspirin group and control group. Conclusions:Hyperlipidemia may cause endoplasmic reticulum stress in podocytes by inducing phosphorylation of PERK and eIF2α, activating ATF4 transcription and inducing high expression of CHOP. Aspirin may partially block the PERK pathway, which may have protective effects for podocytes.

The mediating role of illness perception and illness distress on glycemic control and depression among people with type 2 diabetes / 中华行为医学与脑科学杂志

Objective:To investigate the status of depression and physiological, psychological and social factors among people with type 2 diabetes(T2DM), as well as the mediating effects of illness perception and diabetes distress on glycemic control and depression.Methods:A total of 511 patients with type 2 diabetes were recruited and investigated using general demographic questionnaire, self-rating depression scale(SDS), brief illness perception questionnaire(BIPQ) and diabetes distress scale(DDS). Body mass index (BMI) and hemoglobin a1c (HbA1c) were detected in laboratory.Results:The mean score of SDS was (57.48±9.94). The distribution of depression condition were 138(27.0%)without depression, 179(35%)with mild depression, 174(34.1%)with moderate depression and 20(3.9%)with severe depression.SDS score was significantly positively correlated with poor glycemic control ( r=0.157, P<0.01), illness perception( r=0.359, P<0.01) and four dimensions of diabetes distress( r=0.177-0.354, P<0.01). Partially mediating effect of illness perception( B=0.216, 95% CI=0.112-0.372) was found in glycemic control and depression, the proportion of effect was 25.9%.The chain mediating effect ( B=0.086, 95% CI=0.042-0.149) of illness perception and diabetes distress was also found between glycemic control and depression, whose indirect effect size was 10.3%. Conclusion:Glycemic control is significantly related with depression.Illness perception and diabetes distress are partly mediating the effect between glycemic control and depression.

Bioinformatics analysis of peripheral blood circRNAs in female patients with major depressive disorder / 中华行为医学与脑科学杂志

Objective:To screen the circRNAs with differential expression between female patients with major depressive disorder and healthy women, and to explore the circRNAs that might be associated with depressive disorder through bioinformatics analysis.Methods:Using high-throughput sequencing screen differentially expressed circRNAs of female major depressive disorder patients, |log 2FC|≥1 and FDR<0.05 were used to determine whether circRNA had a difference in expression.According to the miRNA sponges function of circRNA, the online databases were used to predict miRNAs which may be targeted by circRNAs, and miRNAs related target genes were also predicted by the five most different circRNA.GO and KEGG pathway enrichment analysis were used to predict biological processes for the target genes and signaling pathways.Based on the results of high-throughput sequencing, biological processes and signaling pathways related to depression, circRNAs related to depression were screened. Results:Thirteen targeted miRNAs were predicted by the five most different circRNAs(hsa_circ_0020959, hsa_circ_0005959, hsa_circ_0033064, hsa_circ_0006862, hsa_circ_0027732), and multiple biological processes and signaling pathways related to depressive disorders were predicted by the target genes, such as glucocorticoid receptor signaling pathway, interleukin-7 response, nervous system development, Wnt signaling pathway, FoxO signaling pathway, thyroid hormone signaling pathway, neurotrophin signaling pathway, and so on.Conclusion:All the 5 circRNAs enriched biological processes or signaling pathways related to depressive disorder, among which hsa_circ_0005959, hsa_circ_0033064, hsa_circ_0006862 and hsa_circ_0027732 may be more closely related to female major depressive disorder.

Network correlation of circRNA-miRNA and regulatory mechanisms of female major depressive disorder / 中华行为医学与脑科学杂志

Objective:To obtain differential expression profiles of circRNAs and miRNAs in peripheral blood of female patients with major depressive disorder based on high-throughput sequencing technology, and then construct an interaction network.Based on the outcome, it made a further exploration of the possible occurrence and development mechanisms of female major depressive disorder through functional annotation and pathway enrichment analysis.Methods:According to the ceRNA theory, circRNA-miRNA network was constructed by TargetScan software via predicting the binding sites.Subsequently, the GO functional enrichment analysis was performed, and KEGG pathway enrichment analysis were utlized to illustrate the target genes of co-expressed miRNAs.Thereby, the key genes related to major depressive disorder could be screened out.Results:A total of 724 differential circRNAs and 26 differential miRNAs were detected in female patients with major depressive disorder.And hsa_circ_0086092 and hsa-miR-146a-3p were the most co-expressed.Go functional annotations pointed out that it involved the regulation of nucleobase-containing compound metabolic process, regulation of RNA splicing, regulation of cell communication, amino acid transfer, regulation of RNA metabolic process, regulation of signaling and other biological processes.KEGG pathway analysis showed that target genes were mainly enriched in neurotrophin signaling pathway, Rap1 signaling pathway, FoxO signaling pathway, AMPK signaling pathway, cocaine addiction, mTOR signaling pathway, Jak-STAT signaling pathway, cAMP signaling pathway, etcetera.Among the predicted target genes, BDNF, FGF2, MAPK14, GRIN2A, GRIN2B, GRM2 and PDE4 have the highest correlation with major depressive disorder.Conclusion:Hsa_circ_0086092 may be involved in the occurrence and development of female major depressive disorder through interaction with hsa-miR-146a-3p.