Related Experiment Videos

Leg ulcer due to Pseudomanas luteola in a patient with sickle cell disease

Athanassios Tsakris1, Helen Hassapopoulou, Lemonia Skoura

  • 1Department of Microbiology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece. atsakris@med.auth.gr

Insights

Pseudomonas luteola rarely causes infections, often linked to medical devices. This study details a rare case of a leg ulcer in a sickle cell patient caused by a multi-drug resistant Pseudomonas luteola strain.

Area of Science:

  • Clinical microbiology
  • Infectious diseases
  • Hematology

Background:

  • Pseudomonas luteola is an uncommon pathogen in clinical settings.
  • Infections are typically associated with indwelling medical devices like catheters or prostheses.

Observation:

  • A patient with homozygous sickle cell disease presented with a deteriorating leg ulcer.
  • The ulcer culture revealed a significant infection.

Findings:

  • The causative agent was identified as a multiply antibiotic-resistant strain of Pseudomonas luteola.
  • This represents the first reported instance of P. luteola causing a leg ulcer in a sickle cell disease patient.

Implications:

  • Highlights the potential for P. luteola to cause severe infections in immunocompromised individuals.
  • Underscores the need for vigilance in identifying and treating resistant bacterial infections in patients with underlying conditions like sickle cell disease.
  • Informs clinical management strategies for complex wound infections in vulnerable patient populations.

Related Concept Videos

Peptic Ulcer Disease I: Introduction01:25

Peptic Ulcer Disease I: Introduction

Peptic ulcer disease (PUD) involves breaks in the gastrointestinal tract's mucosal lining, primarily in the stomach and duodenum, with less frequent occurrences in the lower esophagus or near the pylorus.Ulcers can be acute or chronic. Acute ulcers are short-lived with minimal inflammation and heal quickly after the irritant is removed. Chronic ulcers persist, may recur, and often cause scarring due to ongoing tissue damage. Superficial erosions affect only the mucosal layer and are called...
Peptic Ulcer Disease I: Introduction01:30

Peptic Ulcer Disease I: Introduction

Peptic Ulcer Disease (PUD) is characterized by mucosal excavation in the esophagus, stomach, pylorus, or duodenum. It can manifest as acute or chronic based on the extent and duration of mucosal involvement.
An acute ulcer, marked by superficial erosion and minimal inflammation, swiftly resolves upon identifying and addressing the underlying cause. In contrast, a chronic ulcer persists, potentially eroding through the muscular wall and forming fibrous tissue.
Peptic ulcers can also be...
Peptic Ulcer01:27

Peptic Ulcer

Peptic ulcers are erosive lesions of the gastric or duodenal lining, most commonly caused by Helicobacter pylori infection. This Gram-negative, helical bacterium has adapted to survive the stomach’s acidic environment by producing urease, which converts urea into ammonia and carbon dioxide. The ammonia neutralizes gastric acid in the bacterium’s immediate environment, allowing colonization of the gastric mucosa. H. pylori attaches to mucus-secreting epithelial cells, penetrates the mucus...
Peptic Ulcer Disease II: Pathophysiology01:24

Peptic Ulcer Disease II: Pathophysiology

Peptic ulcer disease develops when protective mechanisms of the gastrointestinal mucosa are overwhelmed by harmful factors, leading to localized erosions in the stomach or proximal duodenum. The main causes are Helicobacter pylori infection and chronic use of nonsteroidal anti-inflammatory drugs (NSAIDs).Helicobacter pylori–Induced InjuryBacterial Adaptation and Colonization:H. pylori is a spiral, Gram-negative bacterium adapted to the acidic stomach. and transmitted through oral-oral or...
Peptic Ulcer Disease IV: Management01:26

Peptic Ulcer Disease IV: Management

Medical treatment strategies for peptic ulcers encompass various methods. The primary goal of treatment is to diminish gastric acidity and strengthen mucosal defense mechanisms.
The therapeutic approach involves ensuring adequate rest, implementing drug therapy, promoting smoking cessation, making dietary modifications, and emphasizing long-term follow-up care.
Pharmacological management
The prevailing therapy for peptic ulcers involves a combination of managing the patient's current medication...
Peptic Ulcer Disease III: Clinical Manifestations and Complications01:25

Peptic Ulcer Disease III: Clinical Manifestations and Complications

Duodenal UlcersDuodenal ulcers are the most common form of peptic ulcer disease, presenting with chronic, intermittent epigastric pain. Pain typically appears 2–3 hours after meals, especially when the stomach is empty, often waking patients at night. It is characteristically relieved by food or antacids (“pain–food–relief”). Some patients remain asymptomatic until complications like bleeding or perforation emerge, particularly with NSAID or anticoagulant use.Gastric UlcersGastric ulcers share...