BackgroundMetabolic syndrome （MetS） is highly prevalent in patients with mental disorders， including elevated diastolic or systolic blood pressure， elevated fasting glucose， hypercholesterolemia， abdominal obesity and so on. As an important component of MetS， the relationship between hypercholesterolemia and mental disorder has been extensively reported， whereas few genome-wide association studies （GWAS） have been conducted to identify the causal role of mental disorders in hypercholesterolemia. ObjectiveTo explore the potential causal relationship between mental disorders and hypercholesterolemia by two-sample Mendelian randomization （MR） method. MethodsSummary data from GWAS were analyzed. Single nucleotide polymorphisms （SNPs） strongly associated with mental disorders were chosen as instrumental variables， and hypercholesterolemia was used as outcome variable. MR analysis utilized inverse-variance weighted （IVW）， MR-Egger regression and weighted median estimation （WME） as the primary analytical tool， and supplemented by simple mode （SM） and weighted mode （WM）. The causal relationship between mental disorders and the risk of hypercholesterolemia was illustrated in terms of odds ratio （OR）. ResultsA total of 36 SNPs associated with mental disorders were identified as instrumental variables. The primary findings from IVW revealed existence of a causal relationship between mental disorders and hypercholesterolemia （IVW： OR=1.067， 95% CI： 1.026~1.109， P=0.001）. Findings from the additional methods （MR-Egger regression， WME， SM， WM） were basically consistent with those reported in IVW method. Further verification indicated that the causal relationship between mental disorders and the risk of hypercholesterolemia was not affected by genetic polymorphism （P>0.05）. The absence of heterogeneity was confirmed through Cochran's Q test and MR-Egger regression （P>0.05）. Furthermore， no causal association in the reverse direction was found （P>0.05）. ConclusionThere is a causal relationship between mental disorders and hypercholesterolemia， and patients with mental disorders may have an increased probability of suffering from hypercholesterolemia.

ObjectiveTo investigate the demyelination induced by Angiostrongylus cantonensis （AC） infection in the brain of Balb/c mice and analyze the untargeted metabolomic changes in the corpus callosum， aiming to elucidate the underlying mechanisms. MethodsBalb/c mice were randomly assigned to a control group （n=6） and an infection group （n=6）. The infection group was orally administered 30 third-stage larvae of AC， while the control group received an equal volume of saline. Body weight， visual function， and behavioral scores were measured on post-infection 3， 6， 9， 12， 15， 18， and 21 days to assess neurological alterations. After 21 days， brain tissues were harvested for immunofluorescence staining， hematoxylin-eosin （HE） staining， and transmission electron microscopy to examine morphological changes in brain myelin and retina. Metabolomics analysis was performed， and differential metabolites were identified using volcano plots and heatmaps. The distribution of fold changes and bar charts were used to profile the key metabolites. These differential metabolites were then subjected to Kyoto Encyclopedia of Genes and Genomes （KEGG） pathway enrichment analysis and regulatory network analysis. ResultsOn the 9th day after AC infection， Balb/c mice showed a decline in neurological behavioral scores （P<0.05）. By day 15， visual scores decreased （P<0.05）， and by day 21， significant weight loss （P＜0.001） and mortality were observed. Concurrently， transmission electron microscopy and immunofluorescence staining revealed significant myelin damage in the corpus callosum and a marked reduction in oligodendrocytes （P<0.001）. HE staining showed severe retinal ganglion cell damage. Metabolomic analysis revealed that glycerophospholipids were the most abundant differential metabolites， with steroids and sphingolipids being relatively less abundant. Cholesteryl ester CE （20：2） was significantly upregulated （P<0.001）， while phosphatidylmethanol （18：0_18：1） was significantly downregulated （P<0.01）. KEGG enrichment and regulatory network analyses demonstrated that the differential metabolites were mainly enriched in metabolic pathways like steroid biosynthesis， bile secretion， and cholesterol metabolism， and were involved in key metabolic pathways such as sphingolipid metabolism， neural signal regulation， and glycerophospholipid metabolism. ConclusionsAC infection affects the metabolic state of mice via multiple pathways， modifying the levels of metabolites crucial for myelination and myelin stability. Demyelination may be closely linked to the disruption of these key metabolic pathways， particularly the dysregulation of cholesterol and sphingolipid metabolism， potentially playing a central role in demyelination onset. Furthermore， alterations in phospholipid metabolism and abnormal nerve signaling regulation may exacerbate myelin damage.

Objective: To investigate the distribution characteristics of Kidd blood group antigens, phenotypes and genotypes in Xinjiang and their influence on the risk of coronary heart disease. Methods: Samples from 7 981 patients treated at People's Hospital of Xinjiang Uygur Autonomous Region from August 1, 2023 to May 31, 2024 were collected for Jk(a-b-) phenotype screening via urea hemolysis test, followed by the third-generation sequencing (TGS). Kidd blood group Jk and Jk antigens in 1 081 patients with coronary heart disease and 1 021 healthy people were detected, and their phenotype frequency distribution was analyzed and corresponding gene frequencies were calculated. Correlation analysis and logistic regression were used to evaluate the influence of Kidd blood group antigen expression on coronary heart disease risk. Results: Two Jk(a-b-) phenotype samples were detected, both resulting from novel gene mutation combinations. Comparative analysis of two groups revealed a higher proportion of the Jk(a-b+) phenotype in the case group (22.5%, 243/1 081) than in the control group (18.5%, 189/1 021). Moreover, Kidd blood group phenotype distribution varied significantly across all ethnic groups in the case group (P<0.05). In the control group, the Hui ethnic group exhibited the highest JK JK genotype frequency 64.15% (34/53). In the case group, the highest JK allele frequency was observed in Mongol ethnic group 56.31% (125/222), and the lowest in Han patients 45.71% (341/746). The expression of Jk antigen was negatively correlated with coronary heart disease (P<0.05). Conclusion: The distribution of Kidd blood group system varied across ethnic groups in Xinjiang. The expression of Jk antigen may have protective effect on coronary heart disease, which provides a basis for future clinical blood transfusion treatment and the mechanism study of the correlation between Kidd blood group and coronary heart disease.

Xenotransplantation is one of the effective ways to overcome the shortage of donor organs. However, the molecular incompatibility between xenotransplantation donors and recipients can cause rejection, which greatly limits the clinical application of xenotransplantation. In recent years, researchers have deeply explored the mechanism of xenotransplantation rejection through xenotransplantation models of pig-to-monkey and pig-to-brain death recipients, and found that the innate immune system plays an important role in rejection. Macrophages, as phagocytes in the innate immune system, not only damage xenografts through phagocytosis but also interact with other immune cells to influence the immune microenvironment of xenotransplantation. However, due to the heterogeneity of macrophages, their phenotypes and functions in xenotransplantation rejection remain unclear. Therefore, it is necessary to further explore the role of macrophages in xenotransplantation rejection. This article reviews the latest research progress of macrophages in xenotransplantation rejection, aiming to explore the mechanisms of macrophages in xenotransplantation rejection and provide references for future research.

Organ transplantation faces the challenge of a shortage of donors. Although xenotransplantation holds great potential, it is limited by rejection. Extracellular histones, as key members of damage-associated molecular patterns, have been proven in recent years to play a crucial role in transplant rejection by activating innate immunity, regulating the coagulation-inflammation network, and modulating adaptive immune responses. However, the specific functions and key mechanisms remain to be clarified. Therefore, this article reviews the structural characteristics of histones, their release pathways, the biological functions of extracellular histones, and their potential roles in xenotransplantation. It summarizes the latest research progress of extracellular histones in xenotransplantation, analyzes the shortcomings of existing research and the direction for future research, with the expectation of providing references for the application of extracellular histones in xenogeneic kidney transplantation.

Objective:To explore the cognition and intention of patients with lower limb deep vein thrombosis (DVT) to participate in patient-reported outcomes (PROs), so as to provide references for the promotion, application, and practice of PROs in lower limb DVT patients in China.Methods:This study adopted the phenomenological qualitative research method. From February to June 2023, 13 lower limb DVT patients admitted to Peking Union Medical College Hospital were selected for semi-structured in-depth interviews. Colaizzi 7-step analysis method was used for analyzing and summarizing data.Results:Thirteen patients with lower limb DVT highly recognized their own value in participating in PROs, namely health benefits, prevention of DVT complications, and reduction of disease uncertainty. Lower limb DVT patients expected to receive support from healthcare professionals, families, and portable and simplified reporting formats to promote their participation in PROs. From the patient 's own perspective, they perceived that insufficient attention to DVT caused by lack of awareness of the hazards of DVT and limited understanding of PROs made it difficult for them to participate in PROs. Conclusions:Lower limb DVT patients have a high intention to participate in PROs. The application and promotion of PROs in lower limb DVT patients in China require joint support from various sectors of society, among which strengthening effective health education for patients and their families and providing multi-channel reporting forms are the key to promoting of PROs.

Objective:To construct a tool to evaluate the knowledge, attitude, and practice of nurses in the prevention of thrombosis related to peripherally inserted central catheter (PICC) .Methods:From December 2022 to April 2023, based on the theory of knowledge, attitude, and practice, a preliminary draft of the PICC-related Thrombosis Prevention Knowledge, Attitude, and Practice Questionnaire for Nurses was formed through systematic literature review, two rounds of Delphi expert consultations, and pre-survey. In May 2023, convenience sampling was used to select 573 nurses from Chinese Academy of Medical Sciences & Peking Union Medical College Hospital as the research subject for a survey to conduct item analysis, validity testing, and reliability testing on the questionnaire.Results:The final version of the PICC-related Thrombosis Prevention Knowledge, Attitude, and Practice Questionnaire for Nurses included 20 knowledge items, 10 attitude items, and 10 practice items. In the content validity of the questionnaire, the average content validity index was 0.984, the overall consensus content validity index was 0.850, and the item level content validity index was 0.857 to 1.000. Exploratory factor analysis extracted three common factors with eigenvalues>1.000, with a cumulative variance contribution rate of 64.540% and factor loadings of 0.450 to 0.908 for each item. The total Cronbach's α coefficient of the questionnaire was 0.895, the half reliability coefficient was 0.947, and the retest reliability coefficient was 0.966.Conclusions:The PICC-related Thrombosis Prevention Knowledge, Attitude, and Practice Questionnaire for Nurses has good reliability and validity, and can be used to evaluate PICC-related thrombosis prevention knowledge, attitude, and practice among nurses.

Quality-sensitive indicators in nursing, as standards for evaluating nursing quality management, can quantitatively determine nursing outcomes. This article provides a comprehensive review of the framework and content of quality-sensitive indicators for venous thromboembolism (VTE) prevention nursing care. The indicators are discussed from three dimensions: structure, process, and outcome. The aim is to provide a reference for the future development of unified and standardized quality-sensitive indicators for VTE prevention nursing care, in order to guide clinical nurses in standardized preventive practices.

Cancer-associated thrombosis (CAT) is a common complication and cause of death in cancer patients. Accurately and efficiently identifying high-risk groups for CAT using risk assessment models and implementing targeted early prevention is key. Although numerous CAT risk assessment models currently exist, their predictive capabilities vary across different populations. This article provides a comprehensive review of CAT risk assessment models and their application status, aiming to offer a reference for clinical nursing staff to understand and choose appropriate risk assessment tools.

Objective:To develop the Cancer-associated Thrombosis (CAT) Prevention Knowledge, Attitude and Practice Questionnaire for Nurses, and conduct reliability and validity tests.Methods:This study was a questionnaire development study. Guided by the theory of knowledge, attitude, and practice, an initial CAT Prevention Knowledge, Attitude, and Practice Questionnaire for Nurses was formed through literature review, group discussion, two rounds of expert consultation, and pre-survey. From April to May 2023, convenience sampling was used to select 700 in-service nurses from Chinese Academy of Medical Sciences & Peking Union Medical College as the research subject, and the reliability and validity of the questionnaire were tested.Results:A total of 700 questionnaires were distributed, and 593 valid questionnaires were collected, with a valid response rate of 84.71% (593/700). The final version of the CAT Prevention Knowledge, Attitude, and Practice Questionnaire for Nurses included three dimensions of knowledge, attitude, and practice, with a total of 39 items. The scale-level content validity index ( S- CVI) was 1.000, with an average S- CVI of 0.971 and an item-level CVI (I- CVI) of 0.860 to 1.000. Exploratory factor analysis extracted a total of seven common factors, with a cumulative variance contribution rate of 77.376%. The total Cronbach's α coefficient of the questionnaire was 0.937, and the Cronbach's α coefficients for each dimension were 0.923, 0.987, and 0.979. The half reliability coefficient was 0.984. After two weeks, the reliability coefficients for each dimension of retesting were 0.959, 1.000, and 0.994. Conclusions:The CAT Prevention Knowledge, Attitude, and Practice Questionnaire for Nurses developed in this study has good reliability and validity, and can be used as an evaluation tool for the cognition of clinical nurses in CAT prevention.