Related Experiment Video

Updated: Oct 7, 2026

Development of a Neonatal Piglet Acute Lung Injury Model Recreating the Early Environment of Preterm Infant Lungs
08:58

Development of a Neonatal Piglet Acute Lung Injury Model Recreating the Early Environment of Preterm Infant Lungs

Published on: October 31, 2025

Immunohistopathologic demonstration of pleuropneumonia associated with Morganella morganii in a piglet

M Ono1, T Namimatsu, T Ohsumi

  • 1onom@zk.zennoh.or.jp

Veterinary Pathology
|May 18, 2001
PubMed

Insights

Morganella morganii was identified as the sole pathogen in a piglet with pleuropneumonia. Immunohistopathology confirmed M. morganii antigen presence, suggesting it causes piglet pleuropneumonia.

Area of Science:

  • Veterinary Microbiology
  • Animal Pathology

Background:

  • Pleuropneumonia is a significant respiratory disease in piglets.
  • Etiology of some piglet pleuropneumonia cases remains unclear.

Observation:

  • A piglet presented with serofibrinous pleuropneumonia.
  • Microbiological examination revealed large numbers of Morganella morganii.
  • No other potential pathogens were isolated from the affected lung tissue.

Findings:

  • Immunohistopathology demonstrated a significant presence of M. morganii antigen within the pneumonic lesion.
  • The distribution of M. morganii antigen correlated strongly with observed histologic damage.
  • Morganella morganii was the only bacterium identified in association with the disease.

Implications:

  • This study suggests Morganella morganii as a potential causative agent of pleuropneumonia in piglets.
  • Further research is warranted to confirm the pathogenicity of M. morganii in porcine respiratory disease.
  • Understanding the role of M. morganii could lead to targeted prevention and treatment strategies for piglet pneumonia.

More Related Videos

A Robust Pneumonia Model in Immunocompetent Rodents to Evaluate Antibacterial Efficacy against S. pneumoniae, H. influenzae, K. pneumoniae, P. aeruginosa or A. baumannii09:17

A Robust Pneumonia Model in Immunocompetent Rodents to Evaluate Antibacterial Efficacy against S. pneumoniae, H. influenzae, K. pneumoniae, P. aeruginosa or A. baumannii

Published on: January 2, 2017

Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia04:32

Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia

Published on: June 28, 2018

Related Concept Videos

Atypical Pneumonia01:14

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...