Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Acute Pyelonephritis I: Introduction

Acute Pyelonephritis I: Introduction

Pyelonephritis is a bacterial infection that primarily affects the renal parenchyma and collecting system, including the renal pelvis, tubules, and interstitial tissue of one or both kidneys. It can be classified as either acute—a sudden, severe infection—or chronic, which refers to long-term or recurrent kidney infections.The primary cause of acute pyelonephritis (APN) is bacterial infection, with Escherichia coli accounting for approximately 70-80% of cases. Other bacteria, such...

Acute Pyelonephritis II: Diagnostic Studies and Management

Acute Pyelonephritis II: Diagnostic Studies and Management

Introduction:For diagnosing acute pyelonephritis, a comprehensive patient history is collected to identify symptoms such as dysuria, frequent or urgent urination, flank pain, or costovertebral angle (CVA) tenderness that may suggest a kidney infection.Physical ExaminationDuring the physical examination, CVA tenderness is assessed. This involves gentle percussion over the costovertebral angle, where tenderness often indicates a kidney infection.Diagnostic TestsUrinalysis: Used to identify white...

Urinary Tract Infection II: Pathophysiology

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 I: Introduction

Urinary Tract Infection I: Introduction

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...

Acute Pharyngitis

Acute Pharyngitis

Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:

Bacterial Phylum Spirochaetes

Bacterial Phylum Spirochaetes

Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Climate-related disease registry in Lebanon: a proposed roadmap.

BMC public health·2026

Same author

Readiness for telehealth integration in primary healthcare centers: a pilot mixed‑methods assessment from Lebanon's REMOTE project.

BMC health services research·2026

Same author

Seroprevalence and risk factors of cytomegalovirus infection in pregnant women in Lebanon: A retrospective study conducted at Hôtel-Dieu de France.

IJID regions·2026

Same author

The Mediating Effect of Nightmares Distress Between Post-Traumatic Stress Symptoms and Psychological Distress in Lebanese Adolescents Following the 2023 Earthquake in Turkey.

Journal of child & adolescent trauma·2026

Same author

Caffeine addiction symptoms mediate the link of depression and anxiety to psychotic experiences in the general population of young adults.

Nutrition and health·2026

Same author

Psychometric Assessment of the Arabic Translation of the Adult ADHD Self-Report Scale Version 1.1 6-Question Screener.

International journal of methods in psychiatric research·2026

Search research articles

Related Experiment Video

Updated: Dec 31, 2025

Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis

Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis

Published on: July 18, 2017

Arcanobacterium pyogenes and encrusted pyelitis.

Albert Semaan¹, Georges Abi Tayeh¹, Josselin Abi Chebel¹

¹Urology Department, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon.

Future Science OA

|January 10, 2020

Summary

This summary is machine-generated.

Trueperella pyogenes, a bacterium typically affecting cattle, was identified as a cause of human urinary tract infections. This case highlights its potential role in encrusted pyelitis, particularly in recurrent infections.

Keywords:

Arcanobacterium pyogenes Trueperella pyogenes atypical pathogens encrusted pyelitis human pyelitis renal calcifications urinary tract infections

More Related Videos

Establishment and Characterization of UTI and CAUTI in a Mouse Model

Establishment and Characterization of UTI and CAUTI in a Mouse Model

Published on: June 23, 2015

Mouse Models of Epididymitis Induced by Pathogen-Associated Molecular Patterns

Mouse Models of Epididymitis Induced by Pathogen-Associated Molecular Patterns

Published on: December 12, 2025

Related Experiment Videos

Last Updated: Dec 31, 2025

Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis

Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis

Published on: July 18, 2017

Establishment and Characterization of UTI and CAUTI in a Mouse Model

Establishment and Characterization of UTI and CAUTI in a Mouse Model

Published on: June 23, 2015

Mouse Models of Epididymitis Induced by Pathogen-Associated Molecular Patterns

Mouse Models of Epididymitis Induced by Pathogen-Associated Molecular Patterns

Published on: December 12, 2025

Area of Science:

Microbiology
Urology

Background:

Trueperella pyogenes is a known veterinary pathogen.
Human urinary tract infections (UTIs) are commonly caused by other bacteria.
T. pyogenes has not been previously reported as a cause of human UTIs.

Observation:

A 69-year-old male with a history of urological procedures presented with recurrent UTI symptoms.
Deep pelvic cultures during renoscopy revealed T. pyogenes.
The patient had undergone prior nephrolithotomy and ureteral reimplantation.

Findings:

T. pyogenes was successfully isolated from the patient's urinary tract.
Treatment with intravenous teicoplanin led to symptom resolution.
Imaging showed regression of bladder and ureteral thickening post-treatment.

Implications:

T. pyogenes can cause human urinary tract infections, including encrusted pyelitis.
This finding is significant in cases of persistent or recurring UTIs.
Further investigation into T. pyogenes as a human pathogen is warranted.