Objective To investigate the role and potential mechanism of secreted phosphoprotein 1 (SPP1)⁺ macrophages in the formation of chronic renal allograft fibrosis. Methods The expression features of SPP1⁺ macrophages in renal allografts of chronic allograft dysfunction (CAD) patients were analyzed based on single-cell transcriptome data of renal tissues from patients with CAD. Transcription factor VIPER analysis and DoRothEA transcription factor activity analysis were performed on the single-cell transcriptome data. Renal tissue samples were collected from kidney transplant recipients, including the CAD group (n=5) and the non-renal allograft fibrosis group (CTL group, n=5). A mouse model of chronic allograft rejection was established and divided into the allogeneic kidney transplantation group (CAD group, n=3) and the syngeneic kidney transplantation group (SYN group, n=3). Hematoxylin-eosin staining was used to detect renal tissue injury in mice, and Masson staining was used to detect renal tissue fibrosis. Immunofluorescence staining was performed to detect SPP1 expression in renal tissues of transplant recipients and mouse renal allografts. Bone marrow-derived macrophages (BMDMs) were extracted from mice and subjected to hypoxia stimulation. The expression of hypoxia-inducible factor (HIF)-1α and SPP1 was detected by Western blot, and SPP1 expression was detected by flow cytometry. BMDMs were transfected with HIF-1α overexpression plasmid and HIF-1α small interfering RNA (siRNA) followed by hypoxia intervention, and the expression of HIF-1α and SPP1 was detected by Western blot. Mouse aortic endothelial cells (MAECs) were co-cultured with the supernatant of BMDMs, and the expression of endothelial-mesenchymal transition (EndMT)-related markers was detected by Western blot and immunofluorescence. Results Single-cell transcriptome analysis showed that the proportion of SPP1⁺ macrophages in renal allograft tissues was significantly higher in the CAD group than in the CTL group (P<0.05). The renal injury score and the percentage of interstitial fibrotic area in the CAD group were significantly higher than those in the SYN group (both P<0.05). Immunofluorescence staining showed that the proportion of SPP1⁺ macrophages was increased in the CAD group compared with the CTL group, and also increased in the CAD group compared with the SYN group (both P<0.05). VIPER analysis and DoRothEA transcription factor activity analysis revealed activation of the hypoxia pathway and upregulated expression of transcription factors such as HIF-1α in SPP1⁺ macrophages. SPP1 expression was elevated in BMDMs under hypoxic conditions. Knockdown of HIF-1α inhibited hypoxia-induced SPP1 protein expression, whereas overexpression of HIF-1α upregulated SPP1 protein levels. After co-culture of hypoxia-induced BMDMs with MAECs, the expression levels of EndMT-related markers were increased. Conclusions SPP1⁺ macrophages differentiated under hypoxia are significantly infiltrated in the formation of chronic renal allograft fibrosis, and may promote renal allograft fibrosis by inducing EndMT in renal vascular endothelial cells.

Kidney transplantation is the most effective treatment for end-stage renal failure, and antibody-mediated rejection remains the leading cause of late allograft loss. Macrophages, as central effectors of innate immunity, play a crucial role in the initiation, progression and tissue damage of antibody-mediated rejection. This article reviews the spatiotemporal dynamic evolution of macrophage polarization status in different stages of antibody-mediated rejection, the fine regulation of key signaling pathways for macrophage polarization, macrophage related molecules and the application prospects of targeted macrophage therapy. In depth analysis of the research progress of macrophages in antibody-mediated rejection, aiming to provide important theoretical basis for the development of precision diagnostic tools based on macrophages and novel immune intervention targets for antibody mediated rejection, ultimately promoting the improvement of long-term prognosis in kidney transplantation.

ObjectiveColorectal cancer (CRC) is a highly heterogeneous malignancy, and traditional Chinese medicine (TCM) syndrome differentiation is widely used in its clinical management. However, the biological basis underlying different TCM syndromes remains insufficiently understood. This study aimed to investigate the proteomic differences between qi-blood deficiency syndrome (QBDS) and damp-heat syndrome (DHS) in CRC patients and to establish a “syndrome-differential protein-herbal component” network for exploring potential molecular mechanisms and therapeutic targets associated with syndrome-specific treatment strategies. MethodsTumor tissue samples were collected from 10 patients with pathologically confirmed CRC, including 5 patients diagnosed with QBDS and 5 with DHS according to standardized TCM syndrome differentiation criteria. Tandem mass tag (TMT)-based quantitative proteomics was employed to identify differentially expressed proteins (DEPs) between the two syndrome groups. Functional enrichment analyses, including Gene Ontology (GO) annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses, were performed to characterize the biological functions and signaling pathways associated with the identified DEPs. Least absolute shrinkage and selection operator (LASSO) regression analysis was further applied to screen key syndrome-related proteins and construct a core protein prediction model. Subsequently, molecular docking was conducted to evaluate the binding affinities between representative herbal compounds, astragaloside IV and berberine, and the identified core proteins. Finally, cell counting kit-8 (CCK-8) assays were performed in HCT 116 and HT-29 colorectal cancer cell lines to validate the anti-proliferative activities of these compounds in vitro. ResultsA total of 44 DEPs were identified between QBDS and DHS tissues, including 21 upregulated and 23 downregulated proteins in the QBDS group relative to the DHS group. Functional enrichment analyses revealed that these proteins were primarily associated with antiviral immune responses, regulation of inflammatory signaling, NF‑κB signaling pathways, cholesterol metabolism, and other biological processes relevant to tumor progression and host immune regulation. LASSO regression analysis identified eight core proteins with potential syndrome-specific significance. Among them, ST7, GPCPD1, and PODXL were closely associated with QBDS, whereas FAT1, GRB7, KRT7, MAFF, and MMP8 were associated with DHS. Molecular docking demonstrated favorable interactions between astragaloside IV and QBDS-related proteins, with binding energies lower than -5 kcal/mol, indicating stable binding activity. Berberine exhibited even lower binding energies and stronger binding specificity toward DHS-related core proteins. In vitro experiments further confirmed that both compounds inhibited CRC cell proliferation, while berberine displayed significantly greater anti-proliferative efficacy. The lowest 48 h IC₅₀ value of berberine reached 15.21 mg/L in CRC cells, indicating a stronger growth-inhibitory effect than astragaloside IV. ConclusionCRC patients with QBDS and DHS exhibit distinct proteomic characteristics, suggesting that different TCM syndromes possess unique molecular signatures. The identified core proteins may serve as potential biomarkers for syndrome differentiation, while astragaloside IV and berberine may exert therapeutic effects through targeting syndrome-specific molecular networks. These findings provide preliminary proteomic evidence supporting syndrome-guided precision integrative medicine in CRC and offer new insights into the biological basis of TCM syndrome differentiation and individualized therapeutic strategies.

Purpose: This study evaluated a school-based mental health program within a psychiatry clerkship to enhance medical students’ competencies in mental health literacy, empathy, communication, and adaptability. The program aimed to bridge theoretical knowledge with practical skills through experiential learning in a real-world, community-based setting. Methods: The study utilized convenience sampling to select 32 medical students from the 2023–2024 psychiatry clerkship cohort. Four focus group discussions, each lasting 60–90 minutes, provided qualitative data, which were analyzed using reflexive thematic analysis in Atlas.ti (ATLAS.ti GmbH, Germany) to identify themes related to professional development. Results: Five key themes emerged, highlighting significant gains in context-sensitive communication, empathy, and mental health literacy specific to adolescent issues. The students reported increased clinical confidence, enhanced resilience through psychological techniques such mindfulness and motivational interviewing, and benefited from sustained engagement and peer support, fostering collaboration and stress management. Conclusion The school-based mental health program enhanced essential competencies in mental health literacy, empathy, communication, and practical skills for medical students. By integrating experiential learning into medical education, the program addressed training gaps, equipping future healthcare providers with the skills necessary for holistic and patient-centered mental healthcare across diverse clinical settings. The approach showed potential for broader applications in medical education to prepare students for comprehensive mental health support skills.

Purpose: This study evaluated a school-based mental health program within a psychiatry clerkship to enhance medical students’ competencies in mental health literacy, empathy, communication, and adaptability. The program aimed to bridge theoretical knowledge with practical skills through experiential learning in a real-world, community-based setting. Methods: The study utilized convenience sampling to select 32 medical students from the 2023–2024 psychiatry clerkship cohort. Four focus group discussions, each lasting 60–90 minutes, provided qualitative data, which were analyzed using reflexive thematic analysis in Atlas.ti (ATLAS.ti GmbH, Germany) to identify themes related to professional development. Results: Five key themes emerged, highlighting significant gains in context-sensitive communication, empathy, and mental health literacy specific to adolescent issues. The students reported increased clinical confidence, enhanced resilience through psychological techniques such mindfulness and motivational interviewing, and benefited from sustained engagement and peer support, fostering collaboration and stress management. Conclusion The school-based mental health program enhanced essential competencies in mental health literacy, empathy, communication, and practical skills for medical students. By integrating experiential learning into medical education, the program addressed training gaps, equipping future healthcare providers with the skills necessary for holistic and patient-centered mental healthcare across diverse clinical settings. The approach showed potential for broader applications in medical education to prepare students for comprehensive mental health support skills.

Purpose: This study evaluated a school-based mental health program within a psychiatry clerkship to enhance medical students’ competencies in mental health literacy, empathy, communication, and adaptability. The program aimed to bridge theoretical knowledge with practical skills through experiential learning in a real-world, community-based setting. Methods: The study utilized convenience sampling to select 32 medical students from the 2023–2024 psychiatry clerkship cohort. Four focus group discussions, each lasting 60–90 minutes, provided qualitative data, which were analyzed using reflexive thematic analysis in Atlas.ti (ATLAS.ti GmbH, Germany) to identify themes related to professional development. Results: Five key themes emerged, highlighting significant gains in context-sensitive communication, empathy, and mental health literacy specific to adolescent issues. The students reported increased clinical confidence, enhanced resilience through psychological techniques such mindfulness and motivational interviewing, and benefited from sustained engagement and peer support, fostering collaboration and stress management. Conclusion The school-based mental health program enhanced essential competencies in mental health literacy, empathy, communication, and practical skills for medical students. By integrating experiential learning into medical education, the program addressed training gaps, equipping future healthcare providers with the skills necessary for holistic and patient-centered mental healthcare across diverse clinical settings. The approach showed potential for broader applications in medical education to prepare students for comprehensive mental health support skills.

Purpose: This study evaluated a school-based mental health program within a psychiatry clerkship to enhance medical students’ competencies in mental health literacy, empathy, communication, and adaptability. The program aimed to bridge theoretical knowledge with practical skills through experiential learning in a real-world, community-based setting. Methods: The study utilized convenience sampling to select 32 medical students from the 2023–2024 psychiatry clerkship cohort. Four focus group discussions, each lasting 60–90 minutes, provided qualitative data, which were analyzed using reflexive thematic analysis in Atlas.ti (ATLAS.ti GmbH, Germany) to identify themes related to professional development. Results: Five key themes emerged, highlighting significant gains in context-sensitive communication, empathy, and mental health literacy specific to adolescent issues. The students reported increased clinical confidence, enhanced resilience through psychological techniques such mindfulness and motivational interviewing, and benefited from sustained engagement and peer support, fostering collaboration and stress management. Conclusion The school-based mental health program enhanced essential competencies in mental health literacy, empathy, communication, and practical skills for medical students. By integrating experiential learning into medical education, the program addressed training gaps, equipping future healthcare providers with the skills necessary for holistic and patient-centered mental healthcare across diverse clinical settings. The approach showed potential for broader applications in medical education to prepare students for comprehensive mental health support skills.

Objective To analyze the clinical characteristics and polysomnographic(PSG)features of children with sleep-related hypoventilation disorder(SRHD),facilitate its auxiliary diagnosis,and explore the therapeutic effects of non-invasive positive pressure ventilation(NPPV)on SRHD children.Methods A retrospective study was conducted on the medical records of 16 children diagnosed with SRHD who were admitted and treated in the Department of Respiratory Diseases,Children's Hospital Affiliated to Capital Institute of Pediatrics,from July 2016 to June 2024.Additionally,69 children with severe obstructive sleep apnea(OSA)who visited the Department of Respiratory Diseases and Otolaryngology at the same hospital from July 2021 to June 2022 and met the inclusion criteria were enrolled to compare clinical and PSG characteristics between SRHD and OSA children.The therapeutic effects of NPPV were evaluated.Results(1)Among 16 SRHD children,4(25.0%)presented with cyanosis,9(56.3%)with dyspnea,and 5(31.3%)with convulsions.(2)Eleven SRHD children completed PSG+PetCO2,showing PSG characteristics consistent with severe OSA.(3)Compared with severe OSA children,SRHD children had lower proportion of rapid eye movement(REM)sleep,mean and minimum oxygen saturation,and higher obstructive hypopnea index,obstructive apnea-hypopnea index(OAHI),and apnea-hypopnea index(AHI)(P<0.05).(4)When compared with 25 severe OSA children with OAHI>25,the ratio of obstructive apnea to hypoventilation was approximately 1:30 in SRHD children,with more significant decrease in pulse oxygen saturation(P<0.05).(5)After NPPV treatment for 12 SRHD children,clinical symptoms and PSG indicators significantly improved(P<0.05).Conclusions The 3 main symptoms in SRHD children are dyspnea,convulsions,and cyanosis.For children with unexplained cyanosis and PSG meeting severe OSA criteria,especially those with predominantly obstructive hypoventilation events and significant SpO2 reduction,PetCO2 monitoring should be performed to detect SRHD early.NPPV improves clinical symptoms,reduces sleep-related events,increases sleep-time SpO2,and enhances sleep safety in SRHD children.

Fe/Mn/Gd polymetallic nanooxide(FMGN)were prepared by one-step solvent thermal reaction by using Fe(acac)3,Mn(acac)2 and Gd(acac)3 as reaction precursors.Next,hyaluronic acid(HA)was used to modify FMGN to fabricate tumor-targeting T 1-T 2 dual-mode magnetic resonance imaging(MRI)contrast agent(HA-FMGN)for accurate diagnosis of prostate cancer.The structure and morphology of FMGN were observed by transmission electron microscope(TEM).It was found that FMGN exhibited a uniform nanocluster spherical structure when the feeding ratio of iron acetylacetonate,manganese acetylacetonate,and gadolinium acetylacetonate was 3:2:1.X-ray diffraction(XRD)analysis showed that FMGN had a typical inverse spinel structure of Mn doped Fe 3O 4,with Gd existing in the form of amorphous gadolinium oxide.The longitudinal relaxivity(r 1)and transverse relaxivity(r 2)of FMGN were 13.395 and 428.535 L/(mmol·s),respectively,measured by 0.5 T MRI analyzer,which proved that FMGN had excellent T 1-T 2 dual-mode MRI contrast capability.The cytotoxicity and hemolysis test found that HA-FMGN didn't damage red cells and induce toxicity for normal cells,indicating that HA-FMGN had excellent cell biocompatibility.The internalization efficacy of HA-FMGN was observed by CLSM,and the results showed that HA-FMGN possessed excellent prostate tumor-targeting ability.In vivo MRI experiment showed that HA-FMGN significantly enhanced T 1 and T 2 weighted MRI signal to noise ratio(SNR)of prostate tumor,which promoted the accurate diagnosis of orthotopic prostate cancer.