Diagnostic markers

诊断标记
  • 文章类型: Journal Article
    心肌梗死(MI)是一种慢性心血管疾病。这项研究旨在通过生物信息学识别潜在的血管生成和上皮间质转化(EMT)相关基因作为MI诊断的生物标志物。
    所有数据集以及血管生成和EMT相关基因均从公共数据库中收集。获得MI和MI相关基因的差异表达基因(DEGs)。DEGs,MI相关基因,与血管生成和EMT相关基因相交以获得hub基因。功能富集,免疫微环境,和转录因子(TFs)-hub基因调控网络分析。开发并验证了诊断标志物和模型。进行药物预测和分子对接。最后,使用RT-qPCR验证诊断标志物的表达。
    总共224个血管生成和EMT相关基因,2,897度,1,217个MI相关基因,并获得了9个hub基因。浆细胞的免疫浸润水平,T细胞CD4记忆激活,单核细胞,巨噬细胞M0,肥大细胞静息,MI患者的中性粒细胞较高。LRPAP1,COLGALT1,QSOX1,THBD,VCAN,PLOD1和PLAUR作为诊断标志物被鉴定并用于构建诊断模型,这可以很好地区分MI和对照。然后,筛选了9种药物,结合能范围为-7.08至-5.21kcal/mol。RT-qPCR成果显示LRPAP1、PLAUR、MI组PLOD1显著增高。
    7种诊断标记物可能在MI中发挥潜在作用,并可能有助于改善未来的诊断。
    UNASSIGNED: Myocardial infarction (MI) is a chronic cardiovascular disease. This study aims to discern potentially angiogenesis- and epithelial mesenchymal transition (EMT)-related genes as biomarkers for MI diagnosis through bioinformatics.
    UNASSIGNED: All datasets and angiogenesis- and EMT-related genes were collected from the public database. The differentially expressed genes (DEGs) of MI and MI-related genes were acquired. DEGs, MI-related genes, and angiogenesis- and EMT-related genes were intersected to obtain hub genes. Functional enrichment, immune microenvironment, and transcription factors (TFs)-hub genes regulatory network analysis were performed. The diagnostic markers and models were developed and validated. Drug prediction and molecular docking were performed. Finally, diagnostic markers expressions were validated using RT-qPCR.
    UNASSIGNED: A total of 224 angiogenesis- and EMT-related genes, 2,897 DEGs, 1,217 MI-related genes, and 9 hub genes were acquired. The immune infiltration levels of plasma cells, T cells CD4 memory activated, monocytes, macrophages M0, mast cells resting, and neutrophils were higher in patients with MI. LRPAP1, COLGALT1, QSOX1, THBD, VCAN, PLOD1, and PLAUR as the diagnostic markers were identified and used to construct diagnostic models, which can distinguish MI from controls well. Then, 9 drugs were screened, and the binding energies ranged from -7.08 to -5.21 kcal/mol. RT-qPCR results showed that the expression of LRPAP1, PLAUR, and PLOD1 was significantly increased in the MI group.
    UNASSIGNED: The 7 diagnostic markers may play potential roles in MI and could contribute to improved future diagnostics.
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  • 文章类型: Journal Article
    胃癌(GC),恶性上皮肿瘤,是全球癌症相关死亡的第四大原因。GC的治疗策略,尽管面临最大的挑战,通过早期发现和有效的筛查方法可以显著提高生存率。
    为了提供有关多种特定诊断必要性的简要信息,预后,和GC的预测标记。
    这项审查是使用各种搜索引擎进行的,包括PubMedCentral,Scopus,WebofScience,谷歌学者,和其他人。
    提供基本信息的一些潜在生物标志物包括循环肿瘤细胞(CTC),DNA甲基化,claudin18.2,成纤维细胞生长因子受体2(FGFR2),长链非编码RNA(lncRNA),无细胞DNA(cfDNA),microRNAs,和血清胃蛋白酶原。
    多种肿瘤标志物对筛查至关重要,肿瘤鉴定,分期,预后评估,并监测治疗后的复发,因为没有单一的肿瘤诊断指标,预测,并预测GC。
    UNASSIGNED: Gastric cancer (GC), a malignant epithelial tumor, is the fourth leading cause of cancer-related death worldwide. Therapeutic strategies for GC, despite the biggest challenges, can significantly improve survival rates through early detection and effective screening methods.
    UNASSIGNED: To provide brief information on the necessity of multiple specific diagnostic, prognostic, and predictive markers for GC.
    UNASSIGNED: This review was conducted using a variety of search engines, including PubMed Central, Scopus, Web of Science, Google Scholar, and others.
    UNASSIGNED: Some potential biomarkers that provide essential information include circulating tumor cells (CTCs), DNA methylation, claudin 18.2, fibroblast growth factor receptor 2 (FGFR2), long noncoding RNAs (lncRNAs), cell-free DNA (cfDNA), microRNAs, and serum pepsinogens.
    UNASSIGNED: Multiple tumor markers are essential for screening, tumor identification, staging, prognostic assessment, and monitoring recurrence after therapy due to the absence of a single tumor indicator for diagnosing, prognosticating, and predicting GC.
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  • 文章类型: Journal Article
    人参中的人参皂苷以其潜在的健康益处而闻名,包括抗氧化特性和它们表现出抗癌作用的潜力。除了各种编码基因,人参皂苷通过靶向非编码RNA来发挥其功效。长链非编码RNA(lncRNA)由于其参与各种癌细胞活动(如增殖)而受到基础和临床肿瘤学领域的广泛关注,凋亡,转移,和自噬。这些事件可以通过单独的lncRNA或与microRNA或蛋白质结合来实现。这篇综述旨在总结人参皂苷调控的lncRNAs的不同活性,关注它们在人类疾病中通过信号通路调节靶基因的作用。我们强调了人参皂苷在抑制癌细胞增殖中诱导的lncRNAs表达谱的研究结果。最后,我们讨论了利用lncRNAs作为疾病治疗的诊断标记的潜力和挑战。
    Ginsenosides in ginseng are known for their potential health benefits, including antioxidant properties and their potential to exhibit anticancer effects. Besides a various range of coding genes, ginsenosides impose their efficacy by targeting noncoding RNAs. Long noncoding RNA ( lncRNA) has gained significant attention from both basic and clinical oncology fields due to its involvement in various cancer cell activities such as proliferation, apoptosis, metastasis, and autophagy. These events can be achieved either by lncRNA alone or in association with microRNAs or proteins. This review aims to summarize the diverse activities of lncRNAs that are regulated by ginsenosides, focusing on their role in regulating target genes through signaling pathways in human diseases. We highlight the results of studies on the expression profiles of lncRNAs induced by ginsenosides in efforts to inhibit cancer cell proliferation. Finally, we discuss the potential and challenges of utilizing lncRNAs as diagnostic markers for disease treatment.
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  • 文章类型: Journal Article
    背景:卵巢癌是隐匿的,通常在疾病的晚期发现。因为卵巢是盆腔器官,其盆腔液代谢产物的变化可能与卵巢癌有关。
    方法:使用液相色谱-串联质谱(LC-MS/MS)检测卵巢癌患者盆腔液的代谢组学变化,卵巢囊肿和子宫肌瘤。曲线下面积(AUC)分析用于评估脂质代谢产物和血液肿瘤指数的诊断性能。采用Pearson相关算法分析卵巢癌患者临床特征与脂质代谢产物的相关性。
    结果:卵巢癌患者盆腔液中有24种脂质代谢产物明显改变(p<0.05)。棕榈酰肉碱,硫胺素,脂质代谢物,血液肿瘤指数(CA15-3和CA125)显示AUC>0.8,棕榈酰肉碱达到0.942。此外,我们发现一些脂质代谢产物与临床分期显著相关,腹腔水量,淋巴转移,复发(p<0.05,r>0.5)。
    结论:特定脂质代谢产物水平是卵巢癌的潜在生物标志物,可能在卵巢癌的早期诊断和预后评估中起关键作用。
    结论:我们的结果表明,盆腔代谢产物,尤其是一些脂质代谢产物,在卵巢癌的诊断中起着重要的作用。同时,脂质部分代谢产物与卵巢癌患者的临床表现和预后密切相关。我们相信我们的研究对文献做出了重大贡献,因为它提供了一种更有效的卵巢癌检测的潜在方法。
    BACKGROUND: Ovarian cancer is insidious and usually detected in advanced stages of the disease. As the ovaries are pelvic organs, changes in their pelvic fluid metabolites may be associated with ovarian cancer.
    METHODS: Metabolomic changes in the pelvic fluid were detected using liquid chromatography-tandem mass spectrometry (LC-MS/MS) in patients with ovarian cancer, ovarian cysts and uterine fibroids. Area under the curve (AUC) analysis was used to assess the diagnostic performance of lipid metabolites and blood tumor indices. The Pearson correlation algorithm was used to analyze the correlation between clinical characteristics and lipid metabolites in ovarian cancer patients.
    RESULTS: There were 24 lipid metabolites significantly changed in the pelvic fluid of ovarian cancer patients (p < 0.05). Palmitoylcarnitine, lipoamide, lipid metabolites, and blood tumor indices (CA15-3 and CA125) showed AUC > 0.8, with palmitoylcarnitine reaching a high of 0.942. In addition, we found that some lipid metabolites were significantly associated with the clinical stage, abdominal water volume, lymphatic metastasis, and recurrence (p < 0.05, r > 0.5).
    CONCLUSIONS: Levels of specific lipid metabolites are potential biomarkers of ovarian cancer and may play a key role in the early diagnosis and prognostic assessment of ovarian cancer.
    CONCLUSIONS: Our results showed that pelvic metabolites, especially some lipid metabolites, play an important role in the diagnosis of ovarian cancer. Meanwhile, partial lipid metabolites were closely associated with the clinical presentation and prognosis of patients with ovarian cancer. We believe that our study makes a significant contribution to the literature because it provides a potential approach that is more effective for ovarian cancer detection.
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  • 文章类型: Journal Article
    急性阑尾炎目前被认为是腹部最常见的急性外科疾病之一,需要紧急手术。这也是发达国家和发展中国家最常见的腹部紧急情况之一。本研究旨在评估超声和计算机断层扫描在阑尾炎诊断中的特异性和敏感性以及其并发症的发生率。还将评估阑尾炎与一些实验室发现的关联。
    在Dallah-Namar医院进行了一项回顾性研究,利雅得市,沙特阿拉伯。
    720例患者在研究区域被鉴别诊断为阑尾炎。其中,618例患者患有美国腹部/骨盆,15人(2.4%)显示阳性结果。在203名接受腹部CT检查的患者中,8人(4.0%)发现阳性结果。
    确定US的灵敏度相对较低。此外,在所有诊断为阑尾炎的患者中,血清肌酐升高.需要进行更大样本量的进一步研究,以进一步支持当前的发现。
    UNASSIGNED: Acute appendicitis is currently considered one of the most common acute surgical diseases of the abdomen and requires emergency surgery. It is also one of the most common abdominal emergencies in both developed and developing countries. The current study is aimed at assessing the specificity and sensitivity of Ultrasound and Computed Tomography in the diagnosis of appendicitis as well as the prevalence of its complications. The association of appendicitis with several laboratory findings will also be evaluated.
    UNASSIGNED: A retrospective study was conducted at Dallah-Namar Hospital, Riyadh City, Saudi Arabia.
    UNASSIGNED: 720 patients were differentially diagnosed with appendicitis in the study area. Of these, 618 patients had US abdomen/pelvis, with 15 (2.4%) showing positive findings. Amongst the 203 patients noted to have undergone abdominal CT,8 (4.0%) was found to have positive findings.
    UNASSIGNED: The sensitivity of the US was determined to be relatively low. Also, serum creatinine was found to be elevated among all patients diagnosed with appendicitis. Further research with a larger sample size is needed to be conducted to further support the current findings.
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  • 文章类型: Journal Article
    背景:骨关节炎(OA)是一种以软骨退化和关节炎症为特征的常见关节疾病。液-液相分离(LLPS),参与细胞组织的生物物理过程,最近在OA研究中受到关注。然而,LLPS和OA之间的关系仍然知之甚少。
    方法:我们分析了来自GSE48556数据集的基因表达数据,以鉴定与OA相关的LLPS相关基因。差异表达分析,富集分析,利用机器学习算法探索OA中LLPS相关基因的功能意义,构建OA诊断模型。此外,IL-1β作为促炎因子建立体外OA模型,用westernblot检测OA生物标志物的蛋白表达水平。
    结果:在OA样品中筛选了145个LLPS相关基因。富集分析显示这些基因主要富集在mRNA代谢过程中,细胞质颗粒,和胰岛素抵抗。使用机器学习算法选择了OA的四个特征基因,包括ADRB2,H3F3B,GNL3L,还有PELO.这些基因显示出令人满意的诊断价值。此外,这些生物标志物和免疫细胞之间存在关联,包括T细胞CD8和单核细胞。体外实验表明,IL-1β刺激能显著抑制软骨细胞的细胞活力,提高促炎因子水平,可以模拟OA的炎症状态。IL-1β组GNL3L和H3F3B蛋白表达水平明显低于对照组,ADRB2和PELO的水平较高,这与生物信息学分析结果一致。
    结论:我们的研究确定了LLPS相关基因作为OA的潜在诊断生物标志物。这些发现为OA发病机理的分子机制提供了见解,并为开发新的治疗策略提供了机会。
    BACKGROUND: Osteoarthritis (OA) is a prevalent joint disorder characterized by cartilage degeneration and joint inflammation. Liquid-liquid phase separation (LLPS), a biophysical process involved in cellular organization, has recently gained attention in OA research. However, the relationship between LLPS and OA remains poorly understood.
    METHODS: We analyzed gene expression data from the GSE48556 dataset to identify LLPS-related genes associated with OA. Differential expression analysis, enrichment analyses, and machine learning algorithms were employed to explore the functional significance of LLPS-related genes in OA and then construct a diagnostic model for OA. In addition, IL-1β as a pro-inflammatory factor to establish an in vitro OA model, and the protein expression levels of OA biomarkers were detected by western blot.
    RESULTS: A total of 145 LLPS-related genes were screened in OA samples. Enrichment analyses revealed these genes were mainly enriched in mRNA metabolic processes, cytoplasmic granules, and insulin resistance. Four characteristic genes for OA were selected by using machine learning algorithms, including ADRB2, H3F3B, GNL3L, and PELO. These genes showed satisfactory diagnostic values. Furthermore, there were association between these biomarkers and immune cells, including T cells CD8 and monocytes. In vitro experiments showed that IL-1β stimulation significantly inhibited the cell viability of chondrocytes and enhanced the levels of pro-inflammatory factors, that could mimic the inflammatory state of OA. The expression levels of GNL3L and H3F3B proteins in IL-1β group were obviously lower than those in control group, while levels of ADRB2 and PELO were higher, which was consistent with the results of bioinformatics analysis.
    CONCLUSIONS: Our study identifies LLPS-related genes as potential diagnostic biomarkers for OA. These findings provide insights into the molecular mechanisms underlying OA pathogenesis and offer opportunities for the development of novel therapeutic strategies.
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  • 文章类型: Journal Article
    随着基因检测技术的发展,我们发现了许多不同的基因,lncRNA就是其中之一。LncRNAs是指长度超过200bp的非蛋白质编码RNA分子。是LUAD等人类恶性疾病研究的重点之一。LncRNAs作为癌基因或抑制剂调节肿瘤的发生和进展。LncRNAs的差异表达通过影响细胞增殖促进或抑制肺腺癌的进展,转移,入侵,和细胞凋亡,从而影响患者的预后和生存率。因此,LncRNAs可以作为癌症诊断和治疗的潜在靶点。通过检测肿瘤标志物对该病进行早期诊断。由于肺腺癌早期不易诊断,肿瘤标志物容易忽视,LncRNAs在肺腺癌的诊断和治疗中起着重要作用。本文的主要目的是总结LncRNAs对肺腺癌的已知作用,LncRNAs差异表达对肺腺癌进展的影响,以及相关的信号转导通路。并为今后肺腺癌相关LncRNAs的研究提供新的思路。
    With the development of gene testing technology, we have found many different genes, and lncRNA is one of them. LncRNAs refer to a non-protein coding RNA molecule with a length of more than 200bp, which is one of the focuses of research on human malignant diseases such as LUAD. LncRNAs act as an oncogene or inhibitor to regulate the occurrence and progression of tumors. The differential expression of LncRNAs promotes or inhibits the progression of lung adenocarcinoma by affecting cell proliferation, metastasis, invasion, and apoptosis, thus affecting the prognosis and survival rate of patients. Therefore, LncRNAs can be used as a potential target for diagnosis and treatment of cancer. The early diagnosis of the disease was made through the detection of tumor markers. Because lung adenocarcinoma is not easy to diagnose in the early stage and tumor markers are easy to ignore, LncRNAs play an important role in the diagnosis and treatment of lung adenocarcinoma. The main purpose of this article is to summarize the known effects of LncRNAs on lung adenocarcinoma, the effect of differential expression of LncRNAs on the progression of lung adenocarcinoma, and related signal transduction pathways. And to provide a new idea for the future research of lung adenocarcinoma-related LncRNAs.
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  • 文章类型: Journal Article
    在怀孕期间,母体免疫耐受的破坏和先兆子痫之间存在联系,但是调节母体和胎儿免疫耐受的分子机制仍不清楚。本研究利用生物信息学鉴定与胎盘免疫耐受相关的新标志物,并探讨其在预测先兆子痫中的潜在作用。在基因表达综合(GEO)数据集中分析先兆子痫相关基因表达谱揭示了胎盘中211个差异表达基因(DEGs),主要影响免疫细胞的分化和应答途径。采用加权基因共表达网络分析(WGCNA)和套索回归,四个潜在的靶基因(ANKRD37,CRH,LEP,SIGLEC6)被鉴定用于先兆子痫的潜在预测。使用GSE4707数据集的验证证实了这些候选基因的诊断和预测潜力。RT-qPCR验证了胎盘的上调,而ELISA显示其与胎盘免疫耐受相关的免疫耐受因子的相关性。作为这项研究的结果,识别与胎盘免疫相关的潜在生物标志物,并有助于理解先兆子痫的分子机制。
    During pregnancy, there is a link between disruption of maternal immune tolerance and preeclampsia, but the molecular mechanisms that regulate maternal and fetal immune tolerance remain unclear. This study employs bioinformatics to identify new markers related to placental immune tolerance and explore their potential role in predicting preeclampsia. Analyzing preeclampsia-related gene expression profiles in the Gene Expression Omnibus (GEO) dataset reveals 211 differentially expressed genes (DEGs) in the placenta, mainly influencing immune cell differentiation and response pathways. Employing weighted gene co-expression network analysis (WGCNA) and lasso regression, four potential target genes (ANKRD37, CRH, LEP, SIGLEC6) are identified for potential prediction of preeclampsia. Validation using the GSE4707 dataset confirmed the diagnostic and predictive potential of these candidate genes. RT-qPCR verified up-regulation in the placenta, while ELISA showed their correlation with immune tolerance factors associated with placental immune tolerance. As a result of this study, identifies potential biomarkers associated with placental immunity and contributes to understanding the molecular mechanism of preeclampsia.
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  • 文章类型: Journal Article
    肠道菌群是炎症性肠病(IBD)发生发展的重要环境因素。IBD患者的普氏粪杆菌丰度显著降低,用作IBD诊断的生物标志物。然而,这可以在IBD和结直肠癌中观察到,这会混淆诊断结果。因此,我们首先根据单核苷酸变异(SNV)的基因特征,建立了一种高精度预测克罗恩病(CD)的新模型。接下来,属于两个物种的五个基因标记,F.普劳斯尼齐和Eubacterium重现,获得了CD组中丰富的CD预测模型,在发现组(曲线下面积[AUC]=91.13%)和验证组(AUC=79.55%)中观察到区分CD组和对照组的高准确性。该模型在扩展健康队列后仍保持较高的准确性(AUC=89.75%)。还证明了区分CD和CRC组的高疾病特异性(AUC=95.74%)。这项研究建立了一种新的诊断方法来预测IBD,这也为早期,无痛诊断其他非传染性疾病。
    The intestinal microbiota is a crucial environmental factor in the development of inflammatory bowel disease (IBD). The abundance of Faecalibacterium prausnitzii is significantly decreased in IBD patients, which is used as a biomarker for IBD diagnosis. However, this can be observed in both IBD and colorectal cancer, which would confound the diagnostic results. Thus, we first established a new model for predicting Crohn\'s disease (CD) with high precision according to gene characteristics based on single nucleotide variants (SNVs). Next, five gene markers belonging to two species, F. prausnitzii and Eubacterium rectale, that were enriched in the CD group were obtained to build a CD prediction model, and high accuracy in distinguishing the CD and control groups was observed in the discovery (area under curve [AUC] = 91.13%) and validation cohorts (AUC = 79.55%). The model still maintained high accuracy after expanding the healthy cohort (AUC = 89.75%). High disease specificity in distinguishing CD and CRC groups (AUC = 95.74%) was also proven. This study establishes a novel diagnostic method for predicting IBD that also provides unprecedented insight for the early, painless diagnosis of other non-communicable diseases.
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  • 文章类型: Journal Article
    目的:本研究旨在阐明外泌体microRNAs的潜在作用,及其在HNC检测/诊断中的靶向基因。方法:在本研究中,从400例HNC患者和400例健康对照者的血清样本中提取外泌体.使用TEM表征外泌体,NTA,TEM-免疫金标记和ELISA。定量PCR检测外泌体miRNA-19a的表达水平,HNC患者和对照中的miRNA-19b和靶向基因SMAD2和SMAD4。结果:miR-19a表达下调(p<0.01),miR-19b(p<0.03),在HNC患者与对照组中观察到SMAD2(p<0.04)和SMAD4(p<0.04)。结论:ROC曲线和Kaplan-Meier分析显示所选择的外泌体microRNAs和相关基因在HNC患者中具有良好的诊断/预后价值。
    [方框:见正文]。
    Aim: The present study aimed to figure out the potential role of exosomal microRNAs, and their targeted genes in HNC detection/diagnosis. Methods: In the present study, exosomes were extracted from the serum samples of 400 HNC patients and 400 healthy controls. Exosomes were characterized using TEM, NTA, TEM-immunogold labeling and ELISA. Quantitative PCR was used to measure the expression level of exosomal miRNA-19a, miRNA-19b and targeted genes SMAD2 and SMAD4 in HNC patients and controls. Results: The deregulation of miR-19a (p < 0.01), miR-19b (p < 0.03), SMAD2 (p < 0.04) and SMAD4 (p < 0.04) was observed in HNC patients vs controls. Conclusion: ROC curve and Kaplan-Meier analysis showed the good diagnostic/prognostic value of selected exosomal microRNAs and related genes in HNC patients.
    [Box: see text].
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