在几内亚比绍的儿童中微观和分子识别导致腹的肠道原生虫
Heidi B Bertelsen1, Signe V Vahlkvist1, Gitte N Hartmeyer2,3
1Department of Pediatrics and Adolescent Medicine, Lillebaelt Hospital, DK-6000 Kolding, Denmark.
Transactions of the Royal Society of Tropical Medicine and Hygiene
|October 10, 2025
概括
像Giardia duodenalis这样的胃肠道寄生虫感染在比绍的儿童中很常见,通常没有症状. 分子检测 (PCR) 比显微镜更准确地诊断这些感染.
科学领域:
- 传染性疾病 传染性疾病
- 公共卫生 公共卫生
- 分子诊断学 分子诊断
背景情况:
- 胃肠道寄生虫感染在低收入和中等收入国家 (LMICs) 是一个重大的健康挑战.
- 甲状腺虫 (Giardia duodenalis) 和甲状腺虫 (Entamoeba) 是寄生虫感染的常见原因.
研究的目的:
- 为了比较显微镜和PCR用于检测儿童胃肠道寄生虫的诊断准确度.
- 评估寄生虫感染与比绍儿童症状和水源的流行程度和相关性.
主要方法:
- 通过使用显微镜和PCR检查Giardia duodenalis,Entamoeba物种和Cryptosporidium spp.的1238个儿童便样本.
- 分析了症状,显微镜强度和PCR周期值 (Ct) 值之间的关联.
- 根据年龄,性别和居住地对应的孩子.
主要成果:
- 十二指的患病率很高 (56.2%-63.0%通过PCR),明显高于通过显微镜检测到的.
- 通过PCR检测显示的特异性高于显微镜检测,这高估了Entamoeba histolytica的流行率.
- 通过PCR检测的寄生虫与报告的症状没有相关性.
结论:
- 比绍的儿童表现出相当大的无症状Giardia duodenalis负担.
- 在诊断寄生虫感染方面,PCR提供了比显微镜更好的特异性.
- 选择性分子测试与临床评估相结合,建议在资源有限的环境中进行有效治疗.
更多相关视频
10:57Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
Published on: August 22, 2012
24.3K
12:11A Modified EPA Method 1623 that Uses Tangential Flow Hollow-fiber Ultrafiltration and Heat Dissociation Steps to Detect Waterborne Cryptosporidium and Giardia spp.
Published on: July 9, 2012
20.9K
相关概念视频
Diversity of Protists I
850
Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
850
Fungal Phylum Microsporidia
422
Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
422
Methods of Classification and Identification
1.0K
Bacterial identification relies on a diverse array of techniques to classify and understand microorganisms, each tailored to uncover specific characteristics. Traditional morphological approaches, while still valuable, are limited for closely related or structurally simple organisms. Modern methods integrate biochemical, serological, genetic, and advanced molecular tools to achieve greater accuracy.Morphological and Biochemical TechniquesMorphological characteristics, such as cell shape and...
1.0K
