Objective To observe the value of quality control system based on artificial intelligence(AI)for improving imaging quality of chest CT.Methods Totally 1 726 CT images obtained from 415 patients were retrospectively collected,among which 1 414 images were used for convolutional neural network(CNN)training and the rest 312 images were used for validation.Precision,Recall,F1-Score,mean average precision(mAP)and intersection over union(IOU)of quality control system based on AI for chest CT scanning were calculated.Meanwhile,21 patients with unsatisfactory chest CT who would undergo re-examination were prospectively enrolled,and chest CT scanning with quality control system based on AI were performed.The results of 2 examinations were compared.Results Precision,Recall,F1-Score,mAP and IOU of quality control system based on AI for chest CT were all good.All 21 cases were diagnosed correctly with re-examination CT based on quality control system.Among 21 cases,the first CT misdiagnosed 19 cases,the displaying of the area,volume and display quality of pulmonary nodules were not significantly different,but the morphology,boundaries,spiny protrusions,vacuolar signs,inflatable bronchial signs of nodules as well as the thickened and twisted blood vessels were obviously different between 2 times examination.The first CT missed 1 case while correctly diagnosed 1 case.Conclusion The quality control system based on AI was helpful for improving imaging quality of chest CT and increasing diagnostic efficacy.

Objective To investigate the changes in interleukin-34 (IL-34)levels in serum and bronchoalveolar lavage fluid (BALF) of patients with severe pneumonia and their prognostic value. Methods A total of 66 patients with severe pneumonia (severe pneumonia group), 35 patients with non-severe pneumonia (non-severe pneumonia group), and 27 healthy adults (control group) were enrolled. The severe pneumonia group was further divided into survival group of 38 patients and non-survival group of 28 patients based on 28-day survival. Clinical data of all subjects were analyzed. Receiver operating characteristic (ROC) curves were plotted to assess the predictive power of serum IL-34 and relative IL-34 gene expression in BALF for 28-day mortality in patients with severe pneumonia, as well as the predictive power of serum IL-34 for severe pneumonia. Kaplan-Meier survival curves were plotted, and the Log-rank test was used to compare cumulative survival rates. Cox regression analysis was conducted to explore risk factors for 28-day mortality in patients with severe pneumonia. Pearson correlation analysis was used to assess the correlation between serum IL-34 levels and relative IL-34 gene expression in BALF of patients with severe pneumonia. Results Serum IL-34 levels were higher in the severe pneumonia group than those in the non-severe pneumonia group, and were higher in the non-severe pneumonia group than in the control group (P < 0.05). Serum IL-34 levels and relative IL-34 gene expression in BALF were higher in the non-survival group than in the survival group (P < 0.05). ROC curve analysis showed that the areas under the curve for predicting 28-day mortality in patients with severe pneumonia were 0.908 for serum IL-34 levels and 0.878 for relative IL-34 gene expression in BALF. The optimal cutoff value for serum IL-34 levels in predicting severe pneumonia was 129.9 pg/mL. Multivariate Cox regression analysis showed that increased serum IL-34 levels and increased relative IL-34 gene expression in BALF were independent risk factors for 28-day mortality in patients with severe pneumonia (P < 0.05). The Kaplan-Meier survival analysis results indicate that, with a cutoff value of 129.9 pg/mL, patients with severe pneumonia who had high serum levels of IL-34 exhibited a lower cumulative survival rate compared to those with low IL-34 level(Log-rank P < 0.001). Conclusion Serum IL-34 levels are significantly increased in patients with severe pneumonia, and relative IL-34 gene expression in BALF is positively correlated with serum IL-34 levels. Both can be used as indicators for predicting the prognosis of 28-day mortality in patients with severe pneumonia.

OBJECTIVE To explore the effects of esmolol on cardiac function， inflammatory factors and serum microRNA （miR）-29a and miR-129-5p in patients with acute anterior ST-segment elevation myocardial infarction after percutaneous coronary intervention （PCI）. METHODS A total of 120 patients with acute anterior ST-segment elevation myocardial infarction undergoing PCI in our hospital from April 2021 to June 2023 were selected and divided into control group （60 cases） and study group （60 cases） according to the random number table method. The control group was given conventional treatment， and the study group was additionally given Esmolol hydrochloride injection based on the control group for one week. The levels of cardiac function indexes （left ventricular ejection fraction， left ventricular end-systolic volume index， left ventricular end-diastolic diameter， peak ejection fraction， cardiac output）， inflammatory factors （C-reactive protein， myeloperoxidase， interleukin-6， brain natriuretic peptide， homocysteine） myocardial enzyme indexes （creatine kinase isoenzyme， β2-microglobulin， cardiac troponin Ⅰ）， and serum expression of miR-29a and miR-129-5p were observed in two groups， and the occurrence of ADR was recorded. RESULTS After one week of treatment， left ventricular ejection fraction， peak ejection fraction， cardiac output， and the expression of miR-129-5p in two groups was significantly higher than before treatment （P＜0.05）， while left ventricular end-systolic volume index， left ventricular end-diastolic diameter， inflammatory factors and myocardial enzyme index levels， and the expression of miR-29a were significantly lower than before treatment （P＜ 0.05）. The study group was significantly better than the control group （except for the creatine kinase-MB） （P＜0.05）. There was no statistically significant difference in the incidence of symptomatic hypotension， symptomatic bradycardia， cardiogenic shock， and arrhythmia between two groups （P＞0.05）. CONCLUSIONS Esmolol can improve cardiac function， reduce inflammatory factors， lessen myocardial injury， and regulate serum expressions of miR-29a and miR-129-5p in patients with acute anterior ST- segment elevation myocardial infarction after PCI， with good safety.

Objective:To explore the efficacy and safety of hyaluronic acid filler VYC-20L for full-face lifting in aesthetic seeking patients.Methods:Between November 2020 and November 2021, a total of 216 aesthetic seeking patients were enrolled in Shanghai Chingho Outpatient Department, World Path Clinic International, Qihe Medical Beauty Hospital and Qinhuangdao Qiaozhi Beauty Hospital, including 37 males and 179 females, aged 25-67 (41.42±10.93) years. According to the needs and requirements, the novel injection technique of " ROYGBbP-rainbow lifting method" was used to inject hyaluronic acid filler VYC-20L. The global aesthetic improvement scale (GAIS) and the treatment satisfaction questionnaires were scored and evaluated before the injection, and at follow-up visits 1, 6, and 12 months after the injection. Any adverse reaction or adverse events presenting or reported by the patients post-injection were recorded.Results:At 1 month, 6 months and 12 months after the injection, about 203 (94.0%), 208 (96.3%) and 205 (94.9%) of the aesthetic seeking patients rated their full-face appearance as " excellently improved" or " much improved" on the GAIS, respectively. And 12 months after the injection, the overall facial satisfaction scores and appearance recognition scores of all aesthetic seeking patients were all significantly higher than those before injection ( P<0.01). 197 (91.2%), 198 (91.7%) and 198 (91.7%) of the aesthetic seeking patients were " very satisfied" or " relatively satisfied" with the treatment at 1 month, 6 months and 12 months, respectively. Treatment site responses most frequently reported were tenderness, bruising, topical swelling and skin redness. Most of the symptoms were moderate or mild feeling, lasting for no more than two weeks. Conclusions:The application of hyaluronic acid filler VYC-20L is safe and effective for full-face lifting in aesthetic seeking patients, which can significantly improve facial sagging and rejuvenate the face. The effect of improvements can last for 12 months.

Objective:Bone morphogenetic protein-4(BMP4)has been proved to be an important regulatory factor for the pathological process of atherosclerosis(AS).However,there are few related clinical studies.This study aims to investigate the levels of plasma BMP4 in patients suffering from the arterial occlusive diseases(ACD)characterized by AS,and further to test the relationship between BMP4 and inflammation and vascular injury. Methods:A total of 38 ACD patients(the ACD group)and 38 healthy people for the physical examination(the control group)were enrolled.The plasma in each subject from both groups was obtained to test the levels of BMP4,tumor necrosis factor-α(TNF-α),interleukin-1β(IL-1β),IL-10,and vascular endothelial cadherin(VE-cadherin),and the relationship between BMP4 and the detected indicators above were further analyzed. Results:Compared with the control group,the patients in the ACD group displayed significant elevations in the neutrophil to lymphocyte ratio[NLR,1.63(1.26,1.91)vs 3.43(2.16,6.61)]and platelet to lymphocyte ratio[PLR,6.37(5.26,7.74)vs 15.79(7.97,20.53)],while decrease in the lymphocyte to monocyte ratio[LMR,5.67(4.41,7.14)vs 3.43(2.07,3.74)](all P<0.05).Besides,the ACD patients displayed significant elevations in plasma BMP4[581.26(389.85,735.64)pg/mL vs 653.97(510.95,890.43)pg/mL],TNF-α[254.16(182.96,340.70)pg/mL vs 293.29(238.90,383.44)pg/mL],and VE-cadherin[1.54(1.08,2.13)ng/mL vs 1.85(1.30,2.54)ng/mL],and decrease in IL-10[175.89(118.39,219.25)pg/mL vs 135.92(95.80,178.04)pg/mL](all P<0.05).While the levels of IL-1β remained statistically comparable between the 2 groups(P=0.09).Furthermore,the plasma BMP4 levels were further revealed to be positively correlated with the levels of IL-1β(r=0.35),TNF-α(r=0.31)and VE-cadherin(r=0.47),while they were negatively correlated with the levels of IL-10(r=-0.37;all P<0.01). Conclusion:After ACD occurrence,the patients'plasma concentrations of BMP4 would be upregulated,which may serve as a candidate to indicate the levels of inflammation and vascular injury.

Approximately 140 million people worldwide are homozygous carriers of APOE4 (ε4), a strong genetic risk factor for late onset familial and sporadic Alzheimer's disease (AD), 91% of whom will develop AD at earlier age than heterozygous carriers and noncarriers. Susceptibility to AD could be reduced by targeted editing of APOE4, but a technical basis for controlling the off-target effects of base editors is necessary to develop low-risk personalized gene therapies. Here, we first screened eight cytosine base editor variants at four injection stages (from 1- to 8-cell stage), and found that FNLS-YE1 variant in 8-cell embryos achieved the comparable base conversion rate (up to 100%) with the lowest bystander effects. In particular, 80% of AD-susceptible ε4 allele copies were converted to the AD-neutral ε3 allele in human ε4-carrying embryos. Stringent control measures combined with targeted deep sequencing, whole genome sequencing, and RNA sequencing showed no DNA or RNA off-target events in FNLS-YE1-treated human embryos or their derived stem cells. Furthermore, base editing with FNLS-YE1 showed no effects on embryo development to the blastocyst stage. Finally, we also demonstrated FNLS-YE1 could introduce known protective variants in human embryos to potentially reduce human susceptivity to systemic lupus erythematosus and familial hypercholesterolemia. Our study therefore suggests that base editing with FNLS-YE1 can efficiently and safely introduce known preventive variants in 8-cell human embryos, a potential approach for reducing human susceptibility to AD or other genetic diseases.
Humans ; Apolipoprotein E4/genetics* ; Cytosine ; Mutation ; Blastocyst ; Heterozygote ; Gene Editing ; CRISPR-Cas Systems

Objective:The results of the three lipid detection systems were compared to analyze their influence on risk stratification and clinical treatment in lipid management, especially the target goal cut-off point determination, and to find ways to reduce the impact on target goal determination of various lipid measurement system.Methods:A total of 196 serum samples with triglyceride TG <4.5 mmol/L were collected from people undergoing physical examinations and in-patients in the Second Xiangya Hospital of Central South University from August to October 2022. Triglyceride (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C) and high-density lipoprotein cholesterol (HDL-C) were directly detected with Hitachi-Woke (HW), Roche and Mindray detection systems, respectively. The non high-density lipoprotein cholesterol (non HDL-C) was calculated by formula (TC-HDL-C) and LDL-C (F-LDL-C) was calculated by Friedewald formula, and results from various methodology were compared. The coefficient of variation ( CV) of these six indicators derived from the three detection systems were calculated to evaluate the consistency of the obtained results from different venders. In addition, the Pearson correlation coefficient was analyzed to evaluate the correlation of each indicator among different systems. According to the Chinese Guidelines for Blood Lipid Management, samples were divided into groups with LDL-C levels of <1.4, 1.4-<1.8, 1.8-<2.6, 2.6-<3.4 and ≥3.4 mmol/L according to the recommended LDL-C levels for different risk stratification levels. The sample size and percentage of LDL-C test results from different systems in the same group were counted to evaluate the impact of LDL-C differences between systems on clinical decision-making of blood lipid management. The correction factor was calculated through two methods: (1) The average deviation of LDL-C between systems was estimated by EP9-A3 method; (2) Multiple linear stepwise regression was used to establish the regression model of LDL-C difference and related indexes between systems. The two correction factors were used to correct the deviation of LDL-C value obtained from various systems, and Chi-square test was used to compare the difference of LDL-C grouping consistency rate before and after correction. Result:The average CV values of TG, TC, LDL-C, F-LDL-C, HDL-C, and non HDL-C among the three detection systems were 4.84%, 1.92%, 11.96%, 3.81%, 5.82% and 2.61%, respectively. Correlation analysis showed that when comparing the three systems in pairs, except for LDL-C derived from HW and Roche′s, and Mindray and Roche′s LDL-C ( R 2=0.938 and 0.947), the R 2 of other indicators were all greater than 0.97. The consistency rates of the three systems on LDL-C and F-LDL-C were 51.0% (100/196) and 90.8% (178/196), respectively, according to the risk stratification standard values and the difference was statistically significant ( P<0.05). When comparing in pairs, the consistency rates of Roche and HW, Mindray and HW, Mindray and Roche system LDL-C grouping were 60.7% (119/196), 82.7% (162/196), and 54.1% (106/196), respectively. After adjusting for mean deviation, the group consistency rate of Roche and HW increased to 73.7%-79.4% ( P<0.05), and the group consistency rate of Roche and Mindray increased to 72.3%-79.0% ( P<0.05). After adjusting for difference regression model, the group consistency rate of Roche and HW increased to 82.5%-84.0%, and the group consistency rate of Roche and Mindray increased to 81.0%-89.2%. However, there was no significant change in the group consistency rate of Mindray and HW after adjusting for both correction methods ( P>0.05) .Conclusions:There are significant differences in LDL-C derived from different detection systems, and the consistency rate of grouping according to the lipid-lowering standard value is relatively low, which may affect clinical decision-making in lipid management. Adjusted by the correction factor, the consistency rate of grouping between Roche and HW, Roche and Mindray systems with large differences in LDL-C can be improved. Using the difference multiple linear regression model as a correction factor is superior to the average deviation.

Objective To investigate the correlation of IL-6-572GC mutation with the incidence and severity of CHD in the Han elderly in Henan Province.Methods A total of 446 elderly CHD pa-tients of Han majority in Henan Province who were admitted to Department of Cardiovascular Diseases of our hospital from January 2020 to December 2022 were enrolled as the study group,and 218 healthy elderly patients taking physical examination in the same period were selected as the control group.The genotypes of IL-6-174GC,IL-6-572GC and IL-6-597GA were detected in the two groups.Logistic regression analysis was used to analyze the relationship between IL-6-572G/C gene polymorphism and CHD in the elderly,as well as the correlation between IL-6-572GC genotype and the severity of CHD.Results Larger proportions of hypertension and diabetes and higher LDL-C level,but lower HDL-C level were observed in the study group than the control group(P＜0.05,P＜0.01).There were three genotypes at IL-6-174GC locus(GG,GC and CC),three genotypes at IL-6-572GC locus(GG,GC and CC),and three genotypes at IL-6-597GA locus(GG,GA and AA).There were no significant differences in the genotype fre-quencies of IL-6-174GC and IL-6-597GA between the two groups(P＞0.05),but there was a sig-nificant difference in the genotype frequency of IL-6-572GC(P＜0.01)and the genotype frequen-cy of GG was significantly lower in the study group than the control group(33.18％vs 46.82％,P＜0.01).Logistic regression analysis showed that IL-6-572GC(OR=1.534,95％CI:1.180-1.995),hypertension(OR=1.442,95％CI:1.033-1.957),diabetes(OR=1.610,95％CI:1.083-2.391),HDL-C(OR=0.467,95％CI:0.266-0.818)and LDL-C(OR=2.004,95％CI:1.104-3.636)were all influencing factors of CHD(P＜0.05,P＜0.01).At IL-6-572GC locus,the inci-dence of single branch lesions was higher in the carriers of GG genotype than those of GC and CC genotypes,and the incidence of 3-branch lesions was lower than that of CC genotype(P＜0.05).Conclusion The mutation of IL-6-572GC gene is correlated with the incidence and severity of CHD in the elderly Henan Han people,and its mutation also increases the risk and severity of the disease.

BackgroundBeing complex and highly heterogeneous with regard to the etiology and clinical manifestations of depression， neuroimaging studies make a breakthrough for exploring the biological subtypes of depression， while the current data-driven approach for the identification of subtyping depression using structural magnetic resonance imaging （MRI） data is insufficient. ObjectiveTo explore the biological subtypes of depression using diffusion tensor imaging （DTI） and machine learning methods. MethodsA total of 127 patients with depression who attended Beijing Anding Hospital from September 2017 to August 2021 and met the Diagnostic and Statistical Manual of Mental Disorders， fourth edition （DSM-IV） diagnostic criteria were included， and another 80 healthy individuals matched for gender and age were recruited through advertisements in surrounding communities during the same period. DTI findings， demographic characteristics and clinical data were collected from all participants. Tract-based spatial statistics （TBSS） and the Johns Hopkins University （JHU） white matter probability maps were used to extract fractional anisotropy （FA） values of white matter tracts. A semi-supervised machine learning technique was used to identify the subtypes， and the FA values for whole brain white matter of patients and controls were compared. ResultsPatients with depression were classified into two biological subtypes. FA values in multiple tracts including corpus callosum and corona radiata of subtype I patients were smaller than those of healthy controls （P<0.01， FDR corrected）， and FA values in middle cerebellar peduncle， left superior cerebellar peduncle and left cerebral peduncle of subtype II patients were larger than those of healthy controls （P<0.01， FDR-corrected）. Baseline Hamilton Depression Scale-17 item （HAMD-17） score yielded no statistical difference between subtype I and subtype II patients （P>0.05）， while subtype I patients scored lower on HAMD-17 than subtype II patients after 12 weeks of treatment （t=2.410， P<0.05）. ConclusionDepression patients exhibit two biological subtypes with distinct patterns of white matter damage. Furthermore， the subtypes respond differently to the medication treatment. ［Funded by the National Key Research and Development Program of China （number， 2016YFC1307200）， the Scientific Research and Cultivation Program of Beijing Municipal Hospitals （number，PX2023066）， Beijing Anding Hospital， Capital Medical University （number，YJ201904， YJ201911）； www.chictr.org.cn number： ChiCTR-OOC-17012566］

It is unclear whether antidepressants have the same effects on the brain function at different periods of treatment.In this paper, in order to improve the understanding of the neurobiological mechanisms of antidepressants from brain network level, find the target of antidepressants, optimize treatment strategy, four common neuroimaging techniques were reviewed to investigate the changes of brain functional imaging in patients with major depressive disorder at different periods (short-term, acute and long-term) after antidepressant treatment.After short-term antidepressant treatment, the changes of brain functional imaging mainly involved the amygdala, insula, prefrontal cortex, dorsal anterior cingulate cortex and so on, and these short-term changes of brain functional imaging could predict acute efficiency.After acute stage of antidepressant treatment, the changes of brain functional imaging were mostly located in the brain regions of cortical-limbic circuit and default mode network.The effect of long-term antidepressant treatment on brain functional imaging still needs to be further studied.In the future, the experimental design should be optimized and multiple neuroimaging techniques should be combined to conduct longitudinal long-term studies at multiple time points.