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Related Concept Videos

Urinary Tract Infection II: Pathophysiology01:25

Urinary Tract Infection II: Pathophysiology

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...
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care01:30

Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care

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...
Urine Studies II: Urine Culture and Sensitivity Test01:26

Urine Studies II: Urine Culture and Sensitivity Test

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...
Introduction to the Human Microbiota01:22

Introduction to the Human Microbiota

Microorganisms colonize various regions of the human body, including the mouth, nasal passages, throat, stomach, intestines, urogenital tract, and skin. The total number of microbial cells is estimated to range from 10¹³ to 10¹⁴—comparable to, or exceeding, the number of human somatic cells. This host–microbiome relationship has led to the conceptualization of humans as supraorganisms, wherein microbial communities perform vital roles in development, immunity, and disease...
Microbiota of the Stomach and Small Intestine01:27

Microbiota of the Stomach and Small Intestine

The human gastrointestinal (GI) tract is characterized by distinct physicochemical conditions that shape its microbial communities. Among these, the stomach presents a particularly challenging environment for microbial colonization due to its highly acidic pH, ranging from 1 to 3. This extreme acidity effectively limits microbial density. However, certain acid-tolerant microorganisms are capable of surviving in this niche. Notably, Helicobacter pylori can colonize the gastric mucosa,...
Microbiota of the Urogenital Tract01:28

Microbiota of the Urogenital Tract

The human urogenital system, once thought to be sterile in healthy individuals, is now recognized as a complex microbial habitat. Advancements in molecular sequencing techniques have revealed that even in healthy adults, the kidneys and bladder harbor microbial populations similar to those found in the distal urethra, albeit in much lower abundance. These resident microorganisms, while generally innocuous, can become opportunistic pathogens under conditions that alter the urogenital...

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Related Experiment Video

Updated: May 9, 2026

Establishment and Characterization of UTI and CAUTI in a Mouse Model
08:40

Establishment and Characterization of UTI and CAUTI in a Mouse Model

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Exploring Condition-Specific Variability in the Ureteral Stent Microbiome.

Ava Mousavi1, Karan N Thaker1, James E Ackerman1

  • 1Department of Urology, UCLA David Geffen School of Medicine, Los Angeles, CA 90095, USA.

Pathogens (Basel, Switzerland)
|November 27, 2024
PubMed
Summary
This summary is machine-generated.

Ureteral stents harbor distinct bacterial communities in kidney stone and transplant patients. Understanding these unique stent microbiomes is crucial for preventing infections in urology patients.

Keywords:
stent infectionstent microbiomeureteral stent

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Area of Science:

  • Urology
  • Microbiology
  • Infectious Diseases

Background:

  • Indwelling ureteral stents are essential for maintaining ureteral patency but are linked to infections.
  • Bacterial biofilm formation on stents contributes to antimicrobial resistance.
  • The impact of underlying conditions like kidney stones and renal allografts on stent microbiome is not well understood.

Purpose of the Study:

  • To characterize the distinct microbiomes of ureteral stents in kidney stone and renal transplant recipients.
  • To identify differences in bacterial species and their biofilm-forming potential.
  • To inform urological practices for preventing stent-associated infections.

Main Methods:

  • Ureteral stents were collected from patients with kidney stones and those who received renal transplants.
  • Microbial DNA was extracted and analyzed using 16S Next Generation Sequencing.
  • Statistical analyses included descriptive statistics, alpha diversity, and beta diversity.

Main Results:

  • Significant differences were observed in the ureteral stent microbiomes between kidney stone and transplant patient groups.
  • Unique bacterial species with varying biofilm-forming capabilities were identified in each group.
  • The composition of the stent microbiome is influenced by the patient's preceding condition.

Conclusions:

  • The microbiome of ureteral stents varies significantly based on whether the patient has kidney stones or a renal allograft.
  • Further research into these specific stent-associated microbiomes is needed.
  • This understanding can help predict and prevent specific types of ureteral stent infections.