ObjectiveTo analyze the characteristics and influencing factors of elderly hospitalized patients with carbapenem-resistant gram-negative bacillus (CRO) infection in the intensive care unit (ICU) of a gradeⅡ level A general hospital in Yangpu District of Shanghai, and to provide scientific basis for the prevention and control of hospital-acquired CRO infection in such hospitals. MethodsThe clinical data of elderly ICU patients (age ≥60 years) from January 2019 to December 2023 were retrospectively collected. A total of 122 cases with hospital-acquired CRO infection were used as the case group, and a total of 68 cases with carbapenem-sensitive gram-negative (CSO) infection were used as the control group. The clinical characteristics of the two groups were analyzed, and univariate analysis and logistic regression analysis were performed for screening for possible influencing factors on hospital-acquired CRO infection. ResultsThe main pathogens of CRO infection were carbapenem-resistant Acinetobacter baumannii (CRAB) (53 cases, 43.44%) and carbapenem-resistant Klebsiella pneumoniae (CRKP) (46 cases, 37.70%), and 17 patients (13.93%) had more than two types of CRO infection. Among the CRO infection, the main sites were lower respiratory tract infection (58 cases, 47.54%), ventilator-associated pneumonia (21 cases, 17.21%), and catheter-associated urinary tract infections (16 cases, 13.11%). The incidence rate of poor prognosis was higher in the CRO infection group (54.10%) than that in the CSO infection group (36.76%) (P=0.021). The results of univariate analysis showed that male, history of hospitalization within three months, chronic respiratory disease, hypoproteinemia, anemia, and history of invasive procedures prior to infection, including indwelling central venous catheter, invasive mechanical ventilation, urinary catheter, gastric tube placement and parenteral nutrition, in addition, heparin anticoagulation, the use of broad-spectrum penicillin, third-generation cephalosporins, fluoroquinolones, carbapenems, carbapenems combined with fluoroquinolones, carbapenems combined with glycopeptides, use of ≥3 antibiotics and long time of antibiotic use prior to infection were all associated with the CRO infection (P<0.05). The results of logistic regression analysis showed that use of carbapenems (OR=7.739, 95%CI: 2.226‒26.911), ≥3 types of antibiotics (OR=6.307, 95%CI: 1.674‒23.754), invasive mechanical ventilation (OR=4.082, 95%CI: 1.795‒9.281), urinary catheter (OR=3.554, 95%CI: 1.074‒11.758), and comorbid hypoproteinemia (OR=4.741, 95%CI: 2.039‒11.022) and diabetes (OR=3.245, 95%CI: 1.344‒7.839) were positively correlated with the risk of CRO infection. ConclusionConcurrent use of carbapenems with multiple other antibiotics, as well as the use of invasive mechanical ventilation, urinary catheter, and comorbid hypoproteinemia and diabetes, may be associated with an increased influencing of CRO infection. More attention should be paid to the prevention and control of infection in elderly patients with the above-mentioned risk factors, and active screening of drug-resistant bacteria should be strengthened. Besides, the rational use of broad-spectrum antibiotics such as carbapenems, avoiding unnecessary invasive operations, and paying attention to patient nutrition and blood glucose control all can reduce the incidence of CRO infection and help to improve clinical outcomes.

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ObjectiveTo observe the clinical efficacy of Shengmaisan combined with polymyxin B in the treatment of carbapenem-resistant gram-negative bacillus infection with sepsis complicated with severe acute respiratory distress syndrome. MethodA total of 90 patients suffering from carbapenem-resistant gram-negative bacillus infection with sepsis complicated with severe acute respiratory distress syndrome were randomly divided into a control group and an observation group， with 45 cases in each group. The control group was treated with polymyxin B， and the observation group was treated with Shengmaisan combined with polymyxin B. The treatment course of both groups was seven days. The infection-related indicators ［white blood cell （WBC） count， procalcitonin （PCT）， neutrophil apolipoprotein （HNL）］， inflammatory factors ［interleukin-6 （IL-6）， serum chemokine ligand 2 （CXCL2）］， and T lymphocyte subpopulations （CD3⁺， CD4⁺， CD8⁺， and CD4⁺/ CD8⁺ value）， acute physiological and chronic health Ⅱ （APACHE Ⅱ） score before and after treatment， as well as bacterial clearance rate and 28-day survival rate after treatment were observed. Result① The experiment was completed， and 81 cases were included， including 41 cases in the observation group and 40 cases in the control group. The general data of the two groups were comparable. ② The bacterial clearance rate of the observation group and the control group was 75.6% （31/41） and 52.5% （21/40）， respectively， and the observation group was higher than the control group （χ²=4.7， P<0.05）. ③ The WBC count， PCT， HNL， IL-6， CXCL2， and APACHE Ⅱ scores of the observation group and the control group all decreased after treatment （P<0.05）. Except for the WBC count， the PCT， HNL， IL-6， CXCL2， and APACHE Ⅱ scores of the observation group were lower than those of the control group （P<0.05）. ④ The values of CD3⁺， CD4⁺， and CD4⁺/CD8⁺ in the observation group were increased after treatment （P<0.05）， and CD8⁺ was decreased （P<0.05）. In the control group， only CD3⁺ value was increased （P<0.05）. The values of CD3⁺， CD4⁺， and CD4⁺/CD8⁺ in the observation group were higher than those in the control group， and the value of CD8⁺ was lower than that in the control group （P<0.05）. ⑤ The 28-day survival rate in the observation group was higher than that in the control group （χ²=4.3， P<0.05）. ConclusionShengmaisan combined with polymyxin B in the treatment of carbapenem-resistant gram-negative bacillus infection with sepsis complicated with severe acute respiratory distress syndrome can better clear bacteria， control infection， reduce the level of inflammatory factors， regulate the immune state of the body， and improve the short-term prognosis.

Objective To explore the protein expression levels of serum neurite outgrowth inhibitor-A(Nogo-A),energy balance related protein(Adropin),zonula occludens-1(ZO-1)and angiopoietin-like protein 4(ANGPTL4)in patients with acute cerebral hemorrhage and their predictive efficacy for prognosis.Methods A total of 148 patients with acute cerebral hemorrhage treated in the hospital from April 2020 to May 2022 were selected as the study group,and another 150 healthy people who came to the hospital for gen-eral physical examination during the same period were selected as the control group,and a retrospective analy-sis was conducted.The protein expression levels of Nogo-A,Adropin,ZO-1 and ANGPTL4 in serum of the two groups were detected by enzyme-linked immunosorbent assay(ELISA)and compared.Spearman correla-tion coefficient was used to analyze the correlation between serum Nogo-A,Adropin,ZO-1,ANGPTL4 protein expression levels and the occurrence of acute cerebral hemorrhage.Receiver operating characteristic(ROC)curve was drawn to analyze the diagnostic efficacy of the combined detection of the above four indicators for a-cute cerebral hemorrhage.In addition,patients in the study group were followed up for 6 months,and were di-vided into good group(91 cases)and poor group(57 cases)according to the prognosis.Serum protein expres-sion levels of Nogo-A,Adropin,ZO-1 and ANGPTL4 were compared between the two groups.ROC curve was used to verify the predictive efficacy of the combined detection for the prognosis of these patients.Results Compared with the control group,the protein expression levels of Nogo-A,ZO-1 and ANGPTL4 in the study group were significantly increased,while the protein expression level of Adropin was significantly decreased(all P<0.05).Spearman correlation coefficient analysis showed that serum Nogo-A,ZO-1,ANGPTL4 pro-tein expression levels were positively correlated with the incidence rate of acute cerebral hemorrhage,while Adropin protein expression level was negatively correlated with the incidence rate of acute cerebral hemor-rhage(all P<0.05).ROC curve verification showed that the combined detection of Nogo-A,Adropin,ZO-1 and ANGPTL4 protein expression levels had high diagnostic efficacy in the evaluation of acute cerebral hemor-rhage,with the sensitivity and the specificity of 92.57%and 90.67%,respectively.Compared with good group,the protein expression levels of Nogo-A,ZO-1 and ANGPTL4 in poor group were significantly higher,while the protein expression level of Adropin was significantly decreased(all P<0.05).ROC curve showed that compared to single detections,the area under the curve of the combined detection of protein expression levels of Nogo-A,Adropin,ZO-1 and ANGPTL4 was larger(P<0.05),with the sensitivity of 84.21%and the specificity of 89.01%.Conclusion The protein expression levels of Nogo-A,Adropin,ZO-1 and AN-GPTL4 are abnormal in patients with acute cerebral hemorrhage,and the protein expression levels of Nogo-A,Adropin,ZO-1 and ANGPTL4 are closely related to the development of acute cerebral hemorrhage.The com-bined detection of the four indicators could not only assist clinical accurate judgment of acute cerebral hemor-rhage,but also have important clinical value in predicting the prognosis of patients.

In the field of dental aesthetics,digital aesthetic design plays a crucial role in helping dentists to predict treatment outcomes vis-ually,as well as in enhancing the consistency of knowledge and understanding of aesthetic goals between dentists and patients.It serves as the foundation for achieving ideal aesthetic effects.However,there is no clear standard for this digital process currently in China and abroad.Many dentists lack of systematic understanding of how to carry out digital aesthetic design for treatment.To establish standardized processes for dental aesthetic design and to improve the homogeneity of treatment outcomes,Chinese Society of Digital Dental Industry(CSD-DI)convened domestic experts in related field to compile this consensus.This article elaborates on the key aspects of digital aesthetic data collection,integration steps,and the digital aesthetic design process.It also formulates a decision tree for dental aesthetics at macro level and outlines corresponding workflows for various clinical scenarios,serving as a reference for clinicians.

Nosocomial infection control personnel are crucial in ensuring the nosocomial infection management and the implementation of prevention and control measures. The level of their job competency directly determines the quality and standard of nosocomial infection management. This article reviews the research progress of competency requirements and evaluation indicators of nosocomial infection personnel domestically and internationally. It also summarizes the current gaps and primary reasons behind these gaps in China’s research， so as to offer insights for the future development and improvement of the comprehensive capabilities of these professionals.

Objective To investigate the effects of Yitangkang on browning of white adipose and PINK1/Parkin pathway of mitophagy in adipose tissue of db/db mice.Methods Totally 30 six-week db/db mice were randomly divided into model group,Yitangkang Group(30 g/kg)and liraglutide group(200 μg/kg),and another 10 C57BL/6 mice of the same age were set as normal group.All groups were treated with corresponding drugs or normal saline for 5 weeks.During the period of administration,the body mass and fasting blood glucose(FBG)of mice in each group were detected regularly,the samples of liver,white and brown adipose of mice were weighed,the contents of serum triglyceride cholesterol(TC),triacylglycerol(TG),low-density lipoprotein cholesterol(LDL-C)and high-density lipoprotein cholesterol(HDL-C)were detected by biochemical analyzer,HE staining was used to observe the pathological changes of inguinal white adipose tissue(iWAT),immunohistochemical staining was used to detect the expression of browning marker protein uncoupling protein-1(UCP1)in iWAT,Western blot was used to detect the expressions of browning-related proteins UCP1,PRDM16,PGC-1α and mitophagy-related proteins PINK1,Parkin,Beclin-1,p62 in iWAT.Results Compared with the normal group,the body mass,liver,white adipose and brown adipose mass of the model group significantly increased(P<0.01),the FBG and serum TG,TC and LDL-C contents significantly increased(P<0.01),and the content of HDL-C significantly decreased(P<0.01);large vacuoles in iWAT adipocytes,the diameter of adipocytes increased obviously,some adipocytes were extruded and deformed,and the edge of adipocytes was not clear,the expressions of iWAT UCP1,PRDM16,PGC-1α and p62 proteins decreased(P<0.01),while the expressions of PINK1,Parkin and Beclin-1 proteins increased(P<0.01).Compared with the model group,the body mass,liver and white adipose mass significantly decreased in Yitangkang group and the liraglutide group(P<0.01),FBG and serum contents of TC,TG and LDL-C were significantly decreased(P<0.05,P<0.01),while HDL-C content significantly increased(P<0.01);the diameter of iWAT adipocytes decreased,the number increased,and the morphology was regular,the expressions of iWAT UCP1,PRDM16,PGC-1α and p62 proteins increased(P<0.01),while the expressions of PINK1,Parkin and Beclin-1 proteins decreased(P<0.05,P<0.01).Conclusion Yitangkang can improve glucose and lipid metabolism and promote browning of white adipose in db/db mice,which may be related to mitophagy mediated by PINK1/Parkin pathway.

Objective:To compare the characteristics of background mucosa, lesion features, and the efficiency of endoscopic submucosal dissection(ESD)between elderly and non-elderly patients with early gastric cancer(EGC).Methods:This study retrospectively collected data on patients with EGC who underwent ESD treatment at Beijing Hospital from April 2020 to December 2022.The clinical characteristics, background mucosa, lesion features, ESD outcomes, and pathological results of the patients were analyzed to compare the differences between elderly and non-elderly patients.Results:A total of 100 patients with EGC were selected, comprising 57 patients in the elderly group and 43 patients in the non-elderly group, with a total of 111 lesions identified(64 lesions in the elderly group and 47 lesions in the non-elderly group).The proportion of patients with a history of chronic atrophic gastritis was significantly higher in the elderly group(89.5%、51/57)compared to the non-elderly group(74.4%、32/43), with a statistically significant difference( P=0.047).Additionally, the difference in the extent of atrophy between elderly patients with EGC and their non-elderly counterparts was statistically significant( P=0.022).Among these patients, the proportion of those classified as Kimura-Takemoto C0 to C1 in the elderly group(15.6%、10/64)was lower than that in the non-elderly group(40.4%、19/47).In contrast, the proportion of patients classified as C2 to C3 in the elderly group(65.6%、42/64)was higher than that in the non-elderly group(51.1%、24/47), and the proportion of those classified as O1 to O3 in elderly patients(12.5%、8/64)was also higher than in the non-elderly group(4.3%、2/47).Furthermore, the difference in the extent of intestinal metaplasia between elderly and non-elderly patients with early gastric cancer was statistically significant( P=0.007).The overall proportion of total intestinal metaplasia in elderly patients(85.9%、55/64)was significantly higher than that in non-elderly patients(61.7%、29/47).Notably, the proportion of patients exhibiting extensive intestinal metaplasia(intestinal metaplasia present in both the gastric antrum and gastric body)was greater in the elderly group(43.8%、28/64)compared to the non-elderly group(23.4%、11/47).The Kyoto gastric cancer risk endoscopic score for elderly patients with EGC was(2.43±1.28)points, significantly higher than that of the non-elderly group(1.72±1.41)points, with a statistically significant difference observed( t=2.778, P=0.006).No statistically significant differences were observed in the proportions of total resection rates, R0 resections, curative resections, or postoperative complications following ESD when comparing elderly patients with EGC to their non-elderly counterparts. Conclusions:The proportion of extensive atrophy and intestinal metaplasia was higher in the background mucosa of elderly patients with EGC, and correspondingly, the Kyoto endoscopic gastric cancer risk score was elevated.Therefore, endoscopic examinations for elderly patients with chronic atrophic gastritis should be conducted with greater care and comprehensiveness.

Polymorphism refers to the simultaneous and frequent existence of two or more discontinuous variants or genotypes or alleles in a biological population, also known as genetic polymorphisms or genes Polymorphism. This gene polymorphism may have a certain degree of influence on the pharmacokinetics and pharmacodynamics of the drug. The study of genomics plays an important role in realizing personalized, patient-oriented precision medicine treatment. Population model analysis is to use a modeling method to quantitatively describe the correlation and variability between pharmacokinetic and pharmacodynamic parameters and individual characteristics and to quantify the impact of covariates. At present, this method has been widely used. This paper systematically introduces the application examples of using the population model approach to assess the effects of genetic polymorphisms on the drug PK/PD.

Ferroptosis is a novel iron-dependent mode of programmed cell death characterized by iron deposition and accumulation of lipid peroxidation. More and more studies have found that ferroptosis is closely related to the pathogenesis of type 2 diabetes mellitus （T2DM）. The yin-fire theory is an important part of LI Gao's spleen-stomach theory， and it is believed that qi-fire imblance and yin-fire internal generation is the main pathogenesis of T2DM. Abnormal iron metabolism may be an important prerequisite for T2DM yin-fire internal generation， while oxidative stress is the specific manifestation of T2DM qi-fire imbalance. Reactive oxygen species （ROS） is the end product of qi-fire imbalance， and lipid peroxide is the pathological products of T2DM yin-fire internal generation. This study intends to explore the pathological mechanism of qi-fire imbalance and yin-fire internal generation from the perspectives of iron metabolism， oxidative stress and lipid peroxidation， enriching the modern connotation of yin-fire theory， and benefiting traditional Chinese medicine to target against ferroptosis， and prevent and treat T2DM precisely.