在国际空间站的短时间太空任务中尿道微生物群的变化
Paul H Chung1, Ben Boursi2,3, Harel Baris4
1Department of Urology, Thomas Jefferson University, Philadelphia, Pennsylvania.
JU open plus
|February 19, 2026
概括
太空旅行显著改变了尿路微生物群的组成,在轨道上时,细菌负载达到峰值. 这些变化可能会影响宇航员在太空任务期间的健康和安全.
科学领域:
- 微生物学 微生物学
- 太空医学 太空医学
- 天体生物学 天体生物学
背景情况:
- 太空旅行带来了独特的压力因素,影响了机组人员的健康.
- 人类微生物组可能会因太空飞行条件而改变.
- 了解这些变化对于宇航员安全至关重要.
研究的目的:
- 为了研究短时间太空飞行期间尿道微生物群的变化.
- 为了比较微重力和地球的尿液收集方法.
- 评估太空旅行对微生物组成和负载的影响.
主要方法:
- 从宇航员飞行前,在国际空间站轨道上以及返回后收集的尿液样本.
- 中流和尿液采集套件 (UCK) 方法的比较.
- 用于微生物分析的16S下一代测序.
主要成果:
- 根据采集方法 (中流与UCK) 在微生物群中没有显著差异.
- 在飞行前,轨道和返回样本之间观察到尿道微生物组成,丰富度和负载的显著差异.
- 轨道微生物组成与飞行前和返回样本有显著差异,在轨道期间的细菌负载达到峰值.
结论:
- 太空旅行显然会改变尿道微生物群.
- 需要进一步的研究来确定这些微生物转移对宇航员的健康影响.
- 这些发现凸显了在太空中持续监测宇航员健康的必要性.
相关概念视频
Urine Studies II: Urine Culture and Sensitivity Test
1.4K
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...
1.4K
Urinary Tract Infection I: Introduction
774
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...
774
Urinary Tract Infection II: Pathophysiology
827
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...
827
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care
345
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...
345


