{"title":"MiR-204-5p promoted maternally expressed gene 3 (MEG3) through SP1-mediated DNMT1 pathway in trophoblast cells in recurrent miscarriage.","authors":"Shasha Liu, Yue Wang, Yuling Guo, Xinran Xu, Yiping Gao, Lan Cheng","doi":"10.17219/acem/195925","DOIUrl":"https://doi.org/10.17219/acem/195925","url":null,"abstract":"<p><strong>Background: </strong>Recurrent miscarriage (RM) affects 1-2% of couples. Maternally expressed gene 3 (MEG3) is aberrantly expressed in RM patients.</p><p><strong>Objectives: </strong>To investigate a novel regulatory mechanism, we examined the miR-204-5p/Specificity protein 1 (SP1)/DNA methyltransferase 1 (DNMT1)/MEG3 axis in the trophoblast cell line HTR-8/SVneo.</p><p><strong>Material and methods: </strong>Human trophoblast cell line HTR-8/SVneo was used and cells were transfected with siRNA targeting SP1, miR-204-5p mimics, pcDNA3.1-DNMT1, or their negative controls (NCs). The methylation inhibitor, 5-azadC, was used to treat the cells transfected with pcDNA3.1-SP1. The reverse transcription quantitative polymerase chain reaction (RT-qPCR) method was used to examine the relative RNA levels of SP1, DNMT1 and MEG3. Western blot assay was performed to measure the protein levels of SP1 and DNMT1. The dual-luciferase reporter gene assay was used to validate the miR-204-5p bindings to SP1. Functional assays were utilized to assess cell apoptosis, colony formation, migration, and invasion.</p><p><strong>Results: </strong>SP1 knockdown inhibited DNMT1 and increased MEG3 expression. The expression of MEG3 was enhanced by methylation inhibition through 5-azadC, but SP1 upregulation reversed this effect. SP1 knockdown increased apoptosis and decreased migration and invasion, which was reversed by DNMT1 overexpression. SP1 was targeted and inhibited by miR-204-5p. miR-204-5p also inhibited DNMT1, and enhanced the expression of MEG3. miR-204-5p inhibited cell proliferation, migration and invasion, and promoted apoptosis. Overexpression of SP1 partially reversed these effects by activating DNMT1 and inhibiting MEG3.</p><p><strong>Conclusions: </strong>miR-204-5p promoted MEG3 expression in trophoblast cells via SP1-mediated DNMT1 inhibition, leading to reduced cell migration, proliferation and invasion, as well as increased apoptosis. This study reveals a novel regulatory axis in trophoblast cells, providing insights into potential regulatory mechanisms in RM.</p>","PeriodicalId":7306,"journal":{"name":"Advances in Clinical and Experimental Medicine","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143802220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Identification of a pyroptosis-related long noncoding RNA signature for determining the prognosis and immune status of hepatocellular carcinoma patients.","authors":"Shaohua Xu, Guoxu Fang","doi":"10.17219/acem/190201","DOIUrl":"10.17219/acem/190201","url":null,"abstract":"<p><strong>Background: </strong>Despite improvements in cancer screening and diagnosis, hepatocellular carcinoma (HCC) is still diagnosed at an advanced stage, and the prognosis is worse than that of early HCC patients. Therefore, better molecular markers and therapeutic targets in HCC are required.</p><p><strong>Objectives: </strong>We investigated the predictive value of pyroptosis-related long noncoding RNAs (lncRNAs) in HCC and the effects of these lncRNAs on the immune microenvironment of HCC.</p><p><strong>Material and methods: </strong>RNA sequencing data of HCC patients were extracted from The Cancer Genome Atlas (TCGA) database to identify differentially expressed pyroptosis-related lncRNAs related to overall survival (OS). A model was established to verify the character of pyroptosis-associated lncRNAs in the tumor microenvironment, and their prognostic value was evaluated.</p><p><strong>Results: </strong>A total of 721 PR lncRNAs were identified based on the analysis of the TCGA database. Univariate Cox analysis revealed 37 survival-related PRlncRNAs with prognostic values. As a result of least absolute shrinkage and selection operator (LASSO) regression analysis, 'ELFN-AS1', AC099850.3, AC073389.3, 'HPN-AS1', AC009283.1, and AL139289.1 showed prognostic value. Kaplan-Meier analysis indicated that the OS of the high-risk set was worse than those of the low-risk set in both the training and testing cohorts. Univariate and multivariate analyses revealed that the risk score was a better independent prognostic factor than the stage. The precision of the lncRNA signature was confirmed using receiver operating characteristic curve (ROC) analysis. Immuneand metabolism-related pathways were enriched in both the lowand high-risk groups. Gene set enrichment analysis suggested that the identified lncRNAs regulate HCC tumorigenesis and prognosis by modulating metabolism. Various algorithms were used to confirm the significant differences in immune cells between these 2 groups.</p><p><strong>Conclusions: </strong>These findings could contribute to the development and validation of favorable biomarkers, improve the prognosis and survival of HCC, and help in developed individualized treatment plans for HCC.</p>","PeriodicalId":7306,"journal":{"name":"Advances in Clinical and Experimental Medicine","volume":" ","pages":"585-596"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142455721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Michał Kułakowski, Karol Elster, Wojciech Piotrowski, Paweł Ślęczka, Aleksandra Królikowska, Jarosław Witkowski, Łukasz Oleksy, Dariusz Janczak, Paweł Reichert
{"title":"Determination of the best point of entry of percutaneous insertion of sacroiliac screws depending on patient positioning for surgery: A cadaveric study.","authors":"Michał Kułakowski, Karol Elster, Wojciech Piotrowski, Paweł Ślęczka, Aleksandra Królikowska, Jarosław Witkowski, Łukasz Oleksy, Dariusz Janczak, Paweł Reichert","doi":"10.17219/acem/188780","DOIUrl":"10.17219/acem/188780","url":null,"abstract":"<p><strong>Background: </strong>The standard starting point for percutaneous sacroiliac screw insertion was initially determined at the intersection of the line posterior to the anterior superior iliac spine and the line continuing the anatomical axis of the femur. The technique was pioneered in patients lying prone in surgery, although it has been used with patients in the supine position. The optimal starting point for patients in both prone and supine positions remains uncertain.</p><p><strong>Objectives: </strong>This cadaveric study aimed to determine the best entry point for the percutaneous insertion of sacroiliac screws depending on the patient's positioning for surgery.</p><p><strong>Material and methods: </strong>Kirschner wires (K-wires) were percutaneously inserted into the sacral body of 8th human cadavers. In addition to the so-called standard sacroiliac screw entry point (point A), points located consecutively 1 cm (point B) and 2 cm (point C) cranially from the point along the line, prolonging the femoral axis were also studied. The K-wires were inserted into the studied entry points on the right side in a supine position and on the left side of the same cadaver in a prone position. The placement of the K-wires was assessed using radiographic imaging and cadaver dissection.</p><p><strong>Results: </strong>An analysis of the K-wire placement in the supine position revealed incorrect positioning of 100% of the K-wires inserted at entry point A and 87% at entry point B. All the K-wires inserted in the supine position at entry point C were correctly placed. All K-wires inserted in the prone position were correctly positioned.</p><p><strong>Conclusions: </strong>All 3 studied entry points enabled the correct placement of orthopedic implants for prone position surgery. The best entry point for surgery performed in the supine position was located 2 cm cranially from the standard entry point, along the line prolonging the femoral axis.</p>","PeriodicalId":7306,"journal":{"name":"Advances in Clinical and Experimental Medicine","volume":" ","pages":"613-621"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141858674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Probiotic interventions and quality of life in patients with gastrointestinal diseases: A comprehensive review.","authors":"Xuejing Qiao, Haosheng Zhang, Lianmei Shan","doi":"10.17219/acem/188108","DOIUrl":"10.17219/acem/188108","url":null,"abstract":"<p><p>Gastrointestinal disorders manifest through disruptions in gastrointestinal functionality accompanied by dysbiosis within the microbiome. Probiotics are considered biological agents with potential therapeutic efficacy in managing gastrointestinal pathologies by modulating the gut microbiota. Nevertheless, several hurdles, such as safety considerations, resilience to stressors, post-colonization quantifications, and evaluative modalities, may impede the adoption of probiotics for gastrointestinal disorders. Herein, we performed online research using 6 databases: Scopus, ScienceDirect, PubMed, Web of Science, Cochrane Library, and Ovid. Inclusion criteria were mostly articles published in the years 2015-2024, concerning the association between probiotics and gastrointestinal diseases. This review aimed to provide comprehensive data regarding the latest studies in this area. Additionally, this review delineates the various aspects of probiotic use, including both the positive and negative aspects, as well as the role of probiotics in immune system modulation and the prevention of various diseases. Also, we comprehensively discuss the prophylactic and supportive therapeutic role of probiotics in the management of COVID-19. Given the extensive adoption of probiotic formulations as microecological interventions for gastrointestinal disorders, a comprehensive understanding of the challenges inherent in their application and the implementation of contemporary methodologies to enhance probiotic colonization and evaluation systems are paramount for harnessing probiotics as viable biotherapeutic agents. However, there is a need for additional studies to confirm the potential role of probiotics as a suitable target in the treatment of gastrointestinal diseases.</p>","PeriodicalId":7306,"journal":{"name":"Advances in Clinical and Experimental Medicine","volume":" ","pages":"641-658"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142387161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Research status and controversy on non-small cell lung cancer stem cells.","authors":"Jin Wang, Yunqing Chen, Chengqin Wang, Keyu Ren","doi":"10.17219/acem/187053","DOIUrl":"10.17219/acem/187053","url":null,"abstract":"<p><p>Lung cancer is a major cause of cancer-related deaths worldwide. It can be divided into 2 main types, namely non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC). Most patients with NSCLC are diagnosed at an advanced stage, and current treatments have limited success. Moreover, relapsing tumors that often appear after surgical or drug treatment are particularly difficult to treat. The existence of cancer stem cells (CSCs) has been proposed as a key factor contributing to the development of resistance to therapy, recurrence and metastasis. Targeting CSCs is a potential strategy for eradicating tumors. However, due to the tumor-type specificity and cellular plasticity, the real clinical application of lung cancer stem cells (LCSCs) has not been realized. This review details the existing phenotypic markers of LCSCs and the limitations of their identification and summarizes the roles of the tumor microenvironment (TME) and epithelial-mesenchymal transition (EMT) in the existence and maintenance of LCSCs, as well as the contribution and controversy of cellular plasticity theory on LCSCs. It is expected that future research on LCSCs can solve the present problems, and approaches targeting LCSCs may be applied in the clinic as soon as possible.</p>","PeriodicalId":7306,"journal":{"name":"Advances in Clinical and Experimental Medicine","volume":" ","pages":"633-640"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anthony Dissen, Izabella Uchmanowicz, Michał Czapla
{"title":"Obesity: A call to action.","authors":"Anthony Dissen, Izabella Uchmanowicz, Michał Czapla","doi":"10.17219/acem/203269","DOIUrl":"10.17219/acem/203269","url":null,"abstract":"<p><p>Obesity has emerged as one of the most pressing public health challenges of the 21st century, impacting millions worldwide and contributing to serious health complications such as type 2 diabetes and cardiovascular diseases, as well as a diminished quality of life. This editorial explores the multifaceted nature of obesity, emphasizing the interplay between genetic predisposition, environmental constraints and behavioral drivers. Key contributors, such as the rising consumption of ultra-processed foods, increasingly sedentary lifestyles and psychosocial stressors, are explored in detail, along with their combined impact on the escalating global obesity rates. The editorial highlights the far-reaching consequences of obesity, including its economic burden, societal implications and the ripple effects on healthcare systems. Priority areas for action are proposed, including public health policies, education and the creation of environments that support active lifestyles. The importance of clinical interventions, such as early screening, personalized treatment strategies and the inclusion of dietitians within multidisciplinary care teams, is emphasized as vital for enhancing patient outcomes and managing obesity effectively. This editorial calls for a comprehensive, systemic response to address the global obesity epidemic, advocating for evidence-based interventions that are tailored to individual needs while addressing societal and environmental determinants. By fostering collaboration across sectors and prioritizing prevention and treatment, meaningful progress can be made in combating this escalating crisis.</p>","PeriodicalId":7306,"journal":{"name":"Advances in Clinical and Experimental Medicine","volume":" ","pages":"473-477"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143802230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparison of median nerve area measurement between MRI and electromyography in patients diagnosed with carpal tunnel syndrome.","authors":"Şule Göktürk, Yasin Göktürk, Ali Koç, Ahmet Payas","doi":"10.17219/acem/187054","DOIUrl":"10.17219/acem/187054","url":null,"abstract":"<p><strong>Background: </strong>Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy that occurs when the median nerve is compressed within the carpal tunnel. Electromyography (EMG) is accepted as the most frequently used and important diagnostic method for CTS. Recently, magnetic resonance imaging (MRI) has begun to be used in CTS patients to directly visualize the median nerve and examine the changes occurring in the nerve structure.</p><p><strong>Objectives: </strong>In this study, the area of the median nerve was measured at various levels in the wrist in patients with CTS using MRI, examining its relationship with signal increase, and comparing this to results obtained with EMG.</p><p><strong>Material and methods: </strong>Overall, 35 patients diagnosed with CTS were included in the study. Patients with normal-mild and moderate-severe EMG tests were included in the study; wrist MRI was taken to investigate the area/mm2 of the median nerve at various levels and whether there was an increase in signal. Thenar muscles included in the imaging were also evaluated.</p><p><strong>Results: </strong>Of the 35 patients included in the study, 24 were women (68.6%) and 11 were men (31.4%). Measurements of the average median nerve area measured in mm2 at the distal radioulnar junction (DRUJ) and the median nerve area measured in mm2 at the hamate bone level were obtained, showing that DRUJ and hamate bone distance measurements were higher in patients with positive EMG. Electromyography findings were also significantly positive in patients with increased signal.</p><p><strong>Conclusions: </strong>In some cases, the diagnosis of CTS can be easily made with history and physical examination or employing confirmatory tests such as EMG, which is considered the gold standard. Magnetic resonsnace imaging can be used as an alternative method for imaging the median nerve in patients with CTS. In our study, EMG findings were also significantly positive in patients with increased signal on MRI, making it a preferable method, especially in soft tissue-related pathological cases.</p>","PeriodicalId":7306,"journal":{"name":"Advances in Clinical and Experimental Medicine","volume":" ","pages":"539-547"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142118761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Supported transitional care applied to stroke survivors: A meta-analysis.","authors":"Shuyin Liang, Huiling Xie, Lili Ye, Caifang Huang, Fengying Yuan, Yanping Tang","doi":"10.17219/acem/186957","DOIUrl":"10.17219/acem/186957","url":null,"abstract":"<p><strong>Background: </strong>This meta-analysis aims to assess the outcomes of supported intervention transitional care compared to traditional care for stroke survivors.</p><p><strong>Material and methods: </strong>A systematic literature review was accomplished and 4,437 stroke patients were recruited for the current study; 2,211 of them were treated with transitional care and 2,226 with traditional care. The inclusion criteria of the current study recruited only randomized clinical trials up until November 2023. A random analysis model was used to analyze the continuous and dichotomous models.</p><p><strong>Results: </strong>Supported intervention transitional care (early supported discharge) for stroke survivors showed a significant (p = 0.002) impact regarding the functional status of patients as expressed by the Barthel index (mean difference (MD) = 0.57, 95% confidence interval (95% CI): 0.20-0.94, I² = 93.72%). On the other hand, there were no considerable (p > 0.05) differences regarding other outcomes such as activities of daily living, the Caregiver Strain Index (CSI), the modified Rankin scale (mRS), and mortality (MD = 0.29, 95% CI: -0.12-0.69, I² = 94.5%; MD = -0.13, 95% CI: -0.40-0.14, I² = 68.65%; MD = -0.13, 95% CI: -0.49-0.23, I² = 83.33%; and MD = -0.19, 95% CI: -0.58-0.17, I² = 0%; respectively).</p><p><strong>Conclusion: </strong>Supported transitional care allowed stroke survivors to succeed in enhancing their functional status outcomes compared with controls, while there was no significant impact regarding mortality rate. Further investigations and multicenter studies are required to enhance the evidence.</p>","PeriodicalId":7306,"journal":{"name":"Advances in Clinical and Experimental Medicine","volume":" ","pages":"479-486"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141299689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bartosz Karolak, Marta Skowrońska, Michał Machowski, Olga Dzikowska-Diduch, Piotr Bienias, Martyna Kuryła, Małgorzata Wiśniewska, Marek Gołębiowski, Piotr Pruszczyk, Michał Ciurzyński
{"title":"Plasma N-terminal pro-brain natriuretic peptide concentrations may help to identify patients with very low-risk acute pulmonary embolism: A preliminary study.","authors":"Bartosz Karolak, Marta Skowrońska, Michał Machowski, Olga Dzikowska-Diduch, Piotr Bienias, Martyna Kuryła, Małgorzata Wiśniewska, Marek Gołębiowski, Piotr Pruszczyk, Michał Ciurzyński","doi":"10.17219/acem/187187","DOIUrl":"10.17219/acem/187187","url":null,"abstract":"<p><strong>Background: </strong>Patients with an acute pulmonary embolism (APE) are a heterogeneous group, and some of them may benefit from early discharge and an ambulatory care referral. We aimed to evaluate the use of N-terminal pro-brain natriuretic peptide (NT-proBNP) plasma level assessment in patients with low-risk APE based on clinical findings (0 points on the simplified Pulmonary Embolism Severity Index (sPESI)).</p><p><strong>Material and methods: </strong>Preliminary analysis of an ongoing prospective study including 1,151 normotensive patients with at least a segmental APE. In the final analysis, 348 patients with a 0-point sPESI were included. Blood samples were collected within the first 24 h of admission. The clinical endpoint (CE) included APE-related mortality and/or rescue thrombolysis in patients with clinical deterioration.</p><p><strong>Results: </strong>Clinical endpoints occurred in 3 patients who had higher plasma NT-proBNP levels than study participants with a favorable clinical course (164 [64-650] pg/mL compared to 2,930 [2,285.5-13,965] pg/mL; p = 0.01). Receiver operating characteristic (ROC) analysis showed that the area under the curve (AUC) for NT-proBNP for the prediction of the CEs was 0.918 (95% confidence interval [95% CI]: 0.831-1.00; p = 0.013). We defined the cutoff value of NT-proBNP at ≥1,641 pg/mL.</p><p><strong>Conclusions: </strong>Among subjects with 0 points on the sPESI, those with concentrations of NT-proBNP exceeding 1,641 pg/mL might require closer attention; remaining patients could be considered candidates for outpatient treatment. However, these findings warrant further investigation in a large, prospective group of patients.</p>","PeriodicalId":7306,"journal":{"name":"Advances in Clinical and Experimental Medicine","volume":" ","pages":"605-611"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142118763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Association of oxygen saturation and mortality in patients with acute respiratory failure.","authors":"Li Ai, Ran Li, Xixian Teng, Jing Li, Bing Hai","doi":"10.17219/acem/189879","DOIUrl":"10.17219/acem/189879","url":null,"abstract":"<p><strong>Background: </strong>The variability and disparities in the recommended targets across different international guidelines suggest the optimal oxygen saturation (SpO2) target for acute respiratory failure (ARF) patients be further explored.</p><p><strong>Objectives: </strong>To explore the association between SpO2 and in-hospital mortality of ARF patients, as well as to determine the optimum SpO2 for ARF patients.</p><p><strong>Material and methods: </strong>In this cohort study, 3,225 ARF patients were included at the end of the follow-up; among them, and 1,249 patients survived and 1,976 died. The restricted cubic spline (RCS) was drawn to show the nonlinear association between the median SpO2 and the risk of in-hospital mortality of ARF patients and to identify the optimal range of SpO2. Cox regression was applied to identify the association between the median SpO2 and the risk of in-hospital mortality in ARF patients. Kaplan-Meier curves were plotted to identify the in-hospital mortality of ARF patients.</p><p><strong>Results: </strong>The in-hospital mortality rate was 61.2% in all ARF patients at the end of the follow-up. The median SpO2 was associated with decreased risk of in-hospital mortality of ARF patients after adjusting for confounders (hazard ratio (HR) = 0.95, 95% confidence interval (95% CI): 0.93-0.97). The median SpO2 was non-linearly correlated with the in-hospital mortality of ARF patients. The overall survival (OS) was higher in the 96-98% group. A median SpO2 ≤ 96% was associated with an increased risk of in-hospital mortality in ARF patients accompanied by malignant cancer (HR = 1.55, 95% CI: 1.24-1.94), renal failure (HR = 1.45, 95% CI: 1.24-1.70), chronic obstructive pulmonary disease (COPD; HR = 1.70, 95% CI: 1.27-2.28) and atrial fibrillation (AF; HR = 1.25, 95% CI: 1.02-1.53). The median SpO2 > 98% was associated with an elevated risk of in-hospital mortality in ARF patients accompanied by AF (HR = 1.22, 95% CI: 1.04-1.44).</p><p><strong>Conclusions: </strong>The median SpO2 was linked to a decreased risk of in-hospital mortality in ARF patients.</p>","PeriodicalId":7306,"journal":{"name":"Advances in Clinical and Experimental Medicine","volume":" ","pages":"561-571"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}