通过GC-IMS结合机器学习进行尿液挥发性有机化合物分析:用于尿路感染的强大诊断和病原体分化工具
Xin Zheng1, Xiaohang Sun2, Wenjing Du1
1Department of Clinical Laboratory, Shandong Provincial Third Hospital, Shandong University, Jinan, Shandong, China.
Frontiers in cellular and infection microbiology
|February 27, 2026
概括
这项研究表明,将尿液中的挥发性有机化合物 (VOC) 与使用机器学习的临床数据相结合,可以准确诊断尿路感染 (UTI). 这种方法为尿路感染诊断和治疗提供了更快,更精确的方法.
科学领域:
- 分析化学 分析化学
- 临床诊断 临床诊断 临床诊断
- 计算生物学 计算生物学
背景情况:
- 诊断尿路感染 (UTI) 的标准尿液培养涉及诊断延迟.
- 尿液中的挥发性有机化合物 (VOC) 是有希望的代谢生物标志物,可快速检测感染.
研究的目的:
- 通过将尿液的VOC配置文件与临床特征相结合,开发和验证用于尿路感染诊断的机器学习模型.
- 与仅使用VOC或临床数据的模型相比,评估综合模型的诊断性能.
主要方法:
- 一项前性队列研究招募了258名怀疑患有尿路感染的成年人.
- 用气体染色体离子移动性光谱法 (GC-IMS) 分析尿液样本的VOC和临床参数.
- 机器学习模型 (逻辑回归,随机森林,支持矢量机) 被训练并使用组合的VOC和临床数据进行测试.
主要成果:
- 随机森林模型整合VOC和临床特征,AUC达到0.914,超过仅使用临床数据 (AUC0.831) 或VOC (AUC0.850) 的模型.
- 乙酸和甲被确定为尿路感染的重要独立预测因子.
- 挥发性有机化合物 (VOC) 概况显示,有可能区分格拉姆阳性和格拉姆阴性细菌感染.
结论:
- 使用机器学习将尿液VOC配置文件与临床数据相结合,可为尿路感染提供高诊断准确度.
- 这种方法促进了病原体的快速分化,可能导致更快,更精确的抗生素治疗.
更多相关视频
10:17High-throughput and Comprehensive Drug Surveillance Using Multisegment Injection-Capillary Electrophoresis-Mass Spectrometry
Published on: April 23, 2019
10.4K
08:53Recurrent Escherichia coli Urinary Tract Infection Triggered by Gardnerella vaginalis Bladder Exposure in Mice
Published on: December 4, 2020
6.9K
相关概念视频
01:30Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care
368
A healthcare provider can diagnose a urinary tract infection (UTI) through several methods:Medical History and Symptoms: The provider will take a detailed medical history and ask about symptoms such as frequent urination, burning sensation during urination, and lower abdominal pain.Urinalysis: A clean-catch urine sample is collected in a sterile container and tested for the presence of bacteria, white blood cells (leukocytes), nitrites, blood, and protein. The presence of leukocytes and...
368
01:26Urine Studies II: Urine Culture and Sensitivity Test
1.6K
A urine culture and sensitivity test is a diagnostic procedure used to identify urinary tract bacterial infections and determine the most effective antibiotics for treatment. This test is generally preferred when a patient shows manifestations of a urinary tract infection, such as frequent or painful urination, cloudy or foul-smelling urine, or lower abdominal pain.Purpose of the TestThe primary goals of a urine culture and sensitivity test are to:Determine the specific bacteria causing the...
1.6K
01:29Urine Studies I: Urinalysis
1.8K
Urinalysis is a widely used diagnostic test that analyzes urine's physical, chemical, and microscopic characteristics. Healthcare providers use it to detect and monitor various health conditions, including renal disease, urinary tract infections (UTIs), diabetes, and metabolic or systemic disorders.Components of UrinalysisUrinalysis consists of three primary components: physical, chemical, and microscopic examination. Each provides unique insights into the urine sample and, by extension, the...
1.8K
01:26Urinary Tract Infection I: Introduction
833
Urinary tract infections (UTIs) impact various parts of the urinary system, including the kidneys, ureters, bladder, and urethra. These infections are generally bacterial, with Escherichia coli being the most common causative agent, often originating from the gastrointestinal tract. However, other bacteria, such as Staphylococcus saprophyticus, Klebsiella pneumoniae, and Proteus mirabilis, are also known to cause UTIs. The type, location, and underlying complexity of the UTI guide both...
833
01:25Urinary Tract Infection II: Pathophysiology
899
The pathophysiology of urinary tract infections (UTIs) encompasses several progressive stages, beginning with bacterial colonization and culminating in potential systemic complications if untreated. UTIs are primarily initiated by bacteria, such as Escherichia coli, which often originate from the gastrointestinal tract and migrate to the urinary system through the periurethral area. This migration can occur via several routes, including improper hygiene practices, sexual activity, or...
899
01:17Urinary Tract Infection IV: Nursing Management
538
In managing urinary tract infections (UTIs) in nursing, a comprehensive assessment is essential. Begin by gathering subjective data, such as the patient’s complaints of dysuria (painful urination), urinary frequency, urgency, suprapubic pain, and any lower abdominal discomfort. This information can be complemented by questions regarding previous UTIs, sexual activity, and personal hygiene practices, which can provide insight into risk factors. Objective assessment should focus on signs...
538