Objective To investigate the alterations in metabolic molecules and pathways during epithelial-mesenchymal transition (EMT) in the lungs of mice induced by silica exposure. Methods A total of 30 specific pathogen-free male C57BL/6 mice were randomly divided into a control group and a silicosis model group. Mice were intratracheally instilled with 40 µL of either 0.9% sodium chloride solution or silica suspension at a mass concentration of 125 g/L. At 7, 14, and 28 days post-exposure, five mice from each group were sacrificed to evaluate lung histopathological changes. The mRNA expression of EMT-related genes was measured by real-time quantitative polymerase chain reaction. Untargeted metabolomics was used to identify metabolites in mouse lung tissues, and differential metabolites (DMs) and metabolic pathways were analyzed. Results Following silica exposure, lung tissues of mice in the silicosis model group showed progressively aggravated pathological changes, including increased inflammatory cell infiltration, thickening of alveolar walls, collagen deposition, and progressive pulmonary fibrosis, with typical silicotic nodules forming by day 28. The Ashcroft scores and the mRNA expression of cadherin (Cdh)2 and vimentin of mice in the silicosis model group increased (all P<0.05), along with decreased Cdh1 mRNA expression compared with the control group at all the three time points (all P<0.05). The Ashcroft scores and the mRNA expression of Cdh2 and vimentin of mice in the silicosis model group increased with the increase of observation time after silica exposure (all P<0.05), while mRNA expression of Cdh1 decreased (all P<0.05). Metabolomics analysis indicated that silica exposure specifically altered the expression of lipids and disrupted multiple metabolic pathways during EMT in lung tissues of silicosis model group mice,with glycerophospholipid metabolism being most obviously affected (P<0.05). Conclusion Silica exposure may induce EMT in mouse lung tissue, resulting in pulmonary fibrosis in a time-dependent manner. The underlying mechanism may be associated with silica-induced disturbances in glycerophospholipid metabolism in mouse lung tissue.

Objective·To explore the function and potential mechanism of suppressor of zeste 12(SUZ12)in hepatocellular carcinoma(HCC).Methods·The expression of SUZ12 in HCC patients was analyzed using R language in liver cancer datasets,and relevant survival curves were drawn.Stable knockdown of SUZ12 was established in the liver cancer cell lines LM3 and Huh7.The knockdown efficiency of SUZ12 was assessed using quantitative real-time PCR(qPCR)and Western blotting.Cell proliferation ability was assessed using CCK-8 assay and colony formation assay.Using the hydrodynamic tail vein injection(HTVI)method,Suz12 was knocked out in the livers of fully immunocompetent mice to explore its tumorigenic function in vivo.The molecular mechanism of SUZ12 regulating HCC was explored using The Cancer Genome Atlas(TCGA)database.R language was used to analyze the relationship between SUZ12 and the expression of cancer stem cell(CSC)markers as well as key glycolysis-related genes.Findings were validated in liver cancer cell lines and mouse tumor tissues.Results·The expression of SUZ12 in liver cancer tissues was higher than in adjacent non-tumor tissues,and its expression increased with higher tumor stage.HCC patients with high SUZ12 expression had poorer prognoses.In LM3 and Huh7 liver cancer cell lines,stable knockdown of SUZ12 reduced cell proliferation ability.In the de novo MYC/Trp53-/-mouse liver cancer model,tumor nodule number and size,and tumor burden in liver tissue were reduced after endogenous knockout of Suz12.TCGA analysis showed that high SUZ12 expression in HCC was enriched in multiple tumor proliferation-and metabolism-related pathways.The expression of SUZ12 was positively correlated with CSC markers and key genes in glycolysis pathway.The mRNA levels of CSC markers and key genes in glycolysis pathway were decreased in liver cancer cell lines with stable SUZ12 knockdown and Suz12 knockout mouse HCC tissues.Conclusion·The expression of SUZ12 is significantly increased in HCC patients and is associated with poor prognosis.Stable knockdown of SUZ12 weakens the proliferative ability of liver cancer cells.Knockout of Suz12 in mice in vivo can suppress the occurrence and development of HCC.The high expression of SUZ12 maintains the CSC pool,induces metabolic reprogramming,and promotes the occurrence and progression of HCC.SUZ12 can serve as a potential biomarker for poor prognosis and a novel target for potential therapeutic intervention in HCC.

Objective·To explore the biological functions and underlying mechanisms of anaphase-promoting complex subunit 10(ANAPC10)in the development and progression of liver hepatocellular carcinoma(LIHC,often abbreviated as HCC).Methods·By integrating data from The Cancer Genome Atlas(TCGA)_LIHC,the hepatitis B virus-related subgroup(HBV)of the China Hepatocellular Carcinoma Genome Project(CHCC),and the Gene Expression Omnibus(GEO),the expression pattern of ANAPC10 in HCC was analyzed.Western blotting and quantitative real-time PCR(q-PCR)were used to verify the findings in HCC cell lines.shRNA-mediated knockdown of ANAPC10 was performed in MHCC-97H and SNU-398 cell lines to investigate the effect of ANAPC10 depletion on the in vitro proliferation of HCC cells.An orthotopic liver cancer model with Anapc10 knockout was constructed using the hydrodynamic tail-vein injection technique in mice to further confirm the impact of ANAPC10 deficiency in the liver on the development and progression of HCC.Kyoto Encyclopedia of Genes and Genomes(KEGG)and Gene Ontology(GO)enrichment analyses were performed on the RNA-sequencing data from TCGA_LIHC and CHCC_HBV.Results·ANAPC10 was highly expressed in tumor tissues,and its expression level was closely related to patient survival.Downregulation of ANAPC10 in vitro and in vivo effectively inhibited HCC progression.ANAPC10 mainly reprogrammed the metabolism of tumors by affecting the PI3K-AKT-mTOR pathway.In the tumor tissues of the orthotopic liver cancer mouse model in the Anapc10 knockout group,the phosphorylation levels of Akt and S6k were decreased,and changes in the key downstream lipid metabolism proteins Fasn and Scd1 were verified.Conclusion·ANAPC10 is highly expressed in HCC and is positively correlated with poor prognosis.It promotes HCC occurrence and progression by activating the PI3K-AKT-mTOR signaling pathway and enhancing lipid metabolism reprogramming,thereby promoting tumor cell proliferation.These findings expand the understanding of ANAPC10 in tumor progression and suggest potential therapeutic targets for HCC.

Glycoprotein non-metastatic melanoma protein B (GPNMB) is a transmembrane glycoprotein that plays an important role in various physiological and pathological processes. In recent years, its role in lung diseases has gradually attracted attention. Studies have found that GPNMB is abnormally expressed in lung diseases and is involved in regulating pathological processes such as inflammatory responses, fibrosis, and tumorigenesis. This article systematically reviews the research progress of GPNMB in common lung diseases such as chronic obstructive pulmonary disease (COPD), pulmonary fibrosis, and lung cancer, and explores its potential as a therapeutic target, providing new insights for the diagnosis and treatment of lung diseases in the future.

Objective:To assess the efficacy and safety of pain control nursing for burn patients.Methods:Databases including CNKI, Wanfang Data Knowledge Service Platform, Weipu Database, China Biomedical Literature Database, Web of Science and Cochrane Library were searched to collect the literature on pain control nursing of burn patients from their inception to December 31, 2024. Literature screening, data extraction and quality assessment were performed independently by 2 researchers based on inclusion and exclusion criteria. Meta-analysis of the included studies was performed by applying RevMan 5.4 software. The efficacy of pain control care was assessed in terms of improving care satisfaction, alleviating negative emotions, reducing pain, and decreasing infection rate. Publication bias was analyzed on the related studies.Results:A total of 9 papers were included, all of which were randomized controlled trial (RCT) studies, involving 791 burn patients, with 392 in the pain control nursing group and 399 in the conventional care group. Meta-analysis showed that compared with the conventional care, pain control nursing significantly increased satisfaction of care ( OR=0.28, 95% CI 0.22, 0.34), improved negative emotions ( SMD=-3.06, 95% CI -4.65, -1.47), reduced pain ( SMD=-2.49, 95% CI -3.41, -1.58), and effectively reduced the incidence of infection ( OR=0.13, 95% CI 0.05, 0.34). The studies related to negative emotions were at the risk of publication bias. Conclusion:Compared with conventional care, pain control nursing can significantly increase care satisfaction, alleviate negative emotions, reduce pain, and lower infection risk in burn patients.

Objective·To explore the biological functions and underlying mechanisms of anaphase-promoting complex subunit 10(ANAPC10)in the development and progression of liver hepatocellular carcinoma(LIHC,often abbreviated as HCC).Methods·By integrating data from The Cancer Genome Atlas(TCGA)_LIHC,the hepatitis B virus-related subgroup(HBV)of the China Hepatocellular Carcinoma Genome Project(CHCC),and the Gene Expression Omnibus(GEO),the expression pattern of ANAPC10 in HCC was analyzed.Western blotting and quantitative real-time PCR(q-PCR)were used to verify the findings in HCC cell lines.shRNA-mediated knockdown of ANAPC10 was performed in MHCC-97H and SNU-398 cell lines to investigate the effect of ANAPC10 depletion on the in vitro proliferation of HCC cells.An orthotopic liver cancer model with Anapc10 knockout was constructed using the hydrodynamic tail-vein injection technique in mice to further confirm the impact of ANAPC10 deficiency in the liver on the development and progression of HCC.Kyoto Encyclopedia of Genes and Genomes(KEGG)and Gene Ontology(GO)enrichment analyses were performed on the RNA-sequencing data from TCGA_LIHC and CHCC_HBV.Results·ANAPC10 was highly expressed in tumor tissues,and its expression level was closely related to patient survival.Downregulation of ANAPC10 in vitro and in vivo effectively inhibited HCC progression.ANAPC10 mainly reprogrammed the metabolism of tumors by affecting the PI3K-AKT-mTOR pathway.In the tumor tissues of the orthotopic liver cancer mouse model in the Anapc10 knockout group,the phosphorylation levels of Akt and S6k were decreased,and changes in the key downstream lipid metabolism proteins Fasn and Scd1 were verified.Conclusion·ANAPC10 is highly expressed in HCC and is positively correlated with poor prognosis.It promotes HCC occurrence and progression by activating the PI3K-AKT-mTOR signaling pathway and enhancing lipid metabolism reprogramming,thereby promoting tumor cell proliferation.These findings expand the understanding of ANAPC10 in tumor progression and suggest potential therapeutic targets for HCC.

Objective·To explore the function and potential mechanism of suppressor of zeste 12(SUZ12)in hepatocellular carcinoma(HCC).Methods·The expression of SUZ12 in HCC patients was analyzed using R language in liver cancer datasets,and relevant survival curves were drawn.Stable knockdown of SUZ12 was established in the liver cancer cell lines LM3 and Huh7.The knockdown efficiency of SUZ12 was assessed using quantitative real-time PCR(qPCR)and Western blotting.Cell proliferation ability was assessed using CCK-8 assay and colony formation assay.Using the hydrodynamic tail vein injection(HTVI)method,Suz12 was knocked out in the livers of fully immunocompetent mice to explore its tumorigenic function in vivo.The molecular mechanism of SUZ12 regulating HCC was explored using The Cancer Genome Atlas(TCGA)database.R language was used to analyze the relationship between SUZ12 and the expression of cancer stem cell(CSC)markers as well as key glycolysis-related genes.Findings were validated in liver cancer cell lines and mouse tumor tissues.Results·The expression of SUZ12 in liver cancer tissues was higher than in adjacent non-tumor tissues,and its expression increased with higher tumor stage.HCC patients with high SUZ12 expression had poorer prognoses.In LM3 and Huh7 liver cancer cell lines,stable knockdown of SUZ12 reduced cell proliferation ability.In the de novo MYC/Trp53-/-mouse liver cancer model,tumor nodule number and size,and tumor burden in liver tissue were reduced after endogenous knockout of Suz12.TCGA analysis showed that high SUZ12 expression in HCC was enriched in multiple tumor proliferation-and metabolism-related pathways.The expression of SUZ12 was positively correlated with CSC markers and key genes in glycolysis pathway.The mRNA levels of CSC markers and key genes in glycolysis pathway were decreased in liver cancer cell lines with stable SUZ12 knockdown and Suz12 knockout mouse HCC tissues.Conclusion·The expression of SUZ12 is significantly increased in HCC patients and is associated with poor prognosis.Stable knockdown of SUZ12 weakens the proliferative ability of liver cancer cells.Knockout of Suz12 in mice in vivo can suppress the occurrence and development of HCC.The high expression of SUZ12 maintains the CSC pool,induces metabolic reprogramming,and promotes the occurrence and progression of HCC.SUZ12 can serve as a potential biomarker for poor prognosis and a novel target for potential therapeutic intervention in HCC.

Objective:To assess the efficacy and safety of pain control nursing for burn patients.Methods:Databases including CNKI, Wanfang Data Knowledge Service Platform, Weipu Database, China Biomedical Literature Database, Web of Science and Cochrane Library were searched to collect the literature on pain control nursing of burn patients from their inception to December 31, 2024. Literature screening, data extraction and quality assessment were performed independently by 2 researchers based on inclusion and exclusion criteria. Meta-analysis of the included studies was performed by applying RevMan 5.4 software. The efficacy of pain control care was assessed in terms of improving care satisfaction, alleviating negative emotions, reducing pain, and decreasing infection rate. Publication bias was analyzed on the related studies.Results:A total of 9 papers were included, all of which were randomized controlled trial (RCT) studies, involving 791 burn patients, with 392 in the pain control nursing group and 399 in the conventional care group. Meta-analysis showed that compared with the conventional care, pain control nursing significantly increased satisfaction of care ( OR=0.28, 95% CI 0.22, 0.34), improved negative emotions ( SMD=-3.06, 95% CI -4.65, -1.47), reduced pain ( SMD=-2.49, 95% CI -3.41, -1.58), and effectively reduced the incidence of infection ( OR=0.13, 95% CI 0.05, 0.34). The studies related to negative emotions were at the risk of publication bias. Conclusion:Compared with conventional care, pain control nursing can significantly increase care satisfaction, alleviate negative emotions, reduce pain, and lower infection risk in burn patients.

Objective:To explore the application effects of the mode of "Multidisciplinary integration, Doctors & patients co-teaching, Simulated practice" in the teaching of spinal surgery.Methods:A total of 64 eight-year program clinical medical students who practiced in Peking Union Medical College Hospital in 2021 were taken as research objects and randomly divided into experimental group ( n=33) and control group ( n=31). The experimental group received the new teaching mode of "Multidisciplinary integration, Doctors & patients co-teaching, Simulated practice", and the control group received regular teaching mode. At the end of teaching, the teaching effects were evaluated from several aspects, including the scores of theoretical examinations, anatomical marks identification tests, and anonymous questionnaires. SPSS 22.0 software was used for paired t-test and two independent-samples t-test. Results:The theoretical test scores [(51.25±6.99) points] and anatomical structure identification scores [(37.56±1.83) points] of the experimental group were higher than those of the control group [(42.46±6.13) points and (30.37±3.46) points], and the differences were statistically significant ( P<0.001). The effective recovery rate of the questionnaire was 100%. The results of the questionnaire showed that the experimental group was significantly higher than the control group in terms of teaching attractiveness, attention, learning interest, learning efficiency, anatomical identification ability, problem-finding and problem-solving ability and overall teaching method satisfaction ( P<0.05). Conclusion:The teaching mode of "Multidisciplinary integration, Doctors & patients co-teaching, Simulated practice" can effectively improve students' theoretical knowledge, learning interest, learning efficiency, operation proficiency and problem-finding and problem-solving ability, which is worth promoting.

Objective:To investigate the clinical value of micro-vascular flow(MV-flow)imaging in evaluating the difference of endometrial micro-flow vascularization index(ⅥMV)between recurrent spontaneous abortion and normal reproductive age women.Methods:From June 2022 to June 2023,87 patients with unexplained recurrent spontaneous abortion in West China Second University Hospital,Sichuan University were selected as the abortion group,including 51 patients with 2 miscarriages,26 patients with 3 miscarriages,and 10 patients with≥4 miscar-riages.In addition,90 normal women of childbearing age who did not have a history of miscarriage and visited our hospital during the same period were selected as the healthy group.Endometrial ⅥMV was measured by transvag-inal ultrasound using MV-flow imaging technology in mid-luteal phase of the two groups.The mean values of en-dometrial ⅥMV in 177 women was measured repeatedly within and between observers.The endometrial ⅥMVand clinical data were compared between the two groups.The differences of endometrial ⅥMV and clinical data in pa-tients with different miscarriage times in the abortion group were compared simultaneously.Results:There was no statistically significant difference in age,body mass index,follicle stimulating hormone and luteinizing hormone be-tween the healthy group and the abortion group(P＞0.05).The ⅥMV of endometrium in healthy group was higher than that in abortion group,and the difference was statistically significant(6.10％vs.3.70％,P＜0.05).In the abortion group,endometrial ⅥMV in patients with 2 miscarriages(5.30％)was higher than that in patients with 3(3.25％)miscarriages and≥ 4(3.30％)miscarriages,and the difference was statistically significant(P＜0.05).There was no statistically significant difference in endometrial ⅥMV between patients with 3 miscarriages and ≥4 miscarriages(P＞0.05).The intraobserver and interobserver correlation coefficients of endometrial ⅥMV were 0.978 and 0.945,respectively.Conclusions:MV-flow imaging technology can effectively evaluate the difference of endometrial ⅥMV between recurrent spontaneous abortion and normal childbearing age women,and endometri-al ⅥMV may decrease with the increase of miscarriage frequency.