Related Experiment Video
Updated: Jul 6, 2026

Assays for the Specific Growth Rate and Cell-binding Ability of Rotavirus
Published on: January 28, 2019
Protein-loosing enteropathy associated with rotavirus infection in an infant
Tadashi Iwasa1, Nobuyuki Matsubayashi
1Department of Pediatrics, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu City, Mie Prefecture, 514-8507, Japan. masaru@clin.medic.mie-u.ac.jp
Insights
This study details a rare case of protein-losing enteropathy in an infant caused by rotavirus gastroenteritis. It highlights immune system alterations, including T-cell changes, potentially triggering this condition.
Area of Science:
- Pediatric Gastroenterology
- Immunology
- Virology
Background:
- Rotavirus is a common cause of gastroenteritis in infants and children.
- Protein-losing enteropathy (PLE) is a rare but serious complication characterized by excessive protein loss into the gastrointestinal tract.
Observation:
- A 6-month-old infant presented with symptoms suggestive of PLE secondary to rotavirus gastroenteritis.
- Laboratory findings included lymphopenia, hypoproteinemia, hypoalbuminemia, hypogammaglobulinemia, and elevated alpha-1-antitrypsin (alpha1-AT) clearance.
Findings:
- Immunological assessment revealed a reversed CD4+/CD8+ T-cell ratio with a decrease in CD4+ lymphocytes.
- An excessive increase in interferon-gamma (IFN-gamma)-producing T cells was observed.
Implications:
- Rotavirus infection may trigger PLE through immune system activation, affecting intestinal integrity and vascular permeability.
- Understanding these immunological changes is crucial for managing rare complications of rotavirus gastroenteritis.
Abstract:
Rotavirus is an acute enteric pathogen in infants and children. We reported a rare case of a 6-mo-old infant with protein-loosing enteropathy (PLE) caused by rotavirus gastroenteritis, and evaluated the immunological profile in peripheral blood lymphocytes. Laboratory examinations showed lymphopenia, hypoproteinemia, hypoalbuminemia, hypogammaglobulinemia, and elevation of alpha-1-antitrypsin (alpha1-AT) clearance. Lymphocytes subpopulation study revealed the reversal of CD4+/CD8+ ratio with the selective decrease of CD4-positive lymphocytes. Moreover, the excessive increase of T cells producing IFN-gamma (IFN-gamma) was found, which plays an important role in the protection against viral infection. The primary or secondary activation of immune system by rotavirus may influence structural integrity and vascular permeability, which may play a triggering role in protein-loosing enteropathy.
Related Concept Videos
Poliomyelitis
Bacterial Gastroenteritis
Respiratory Syncytial Virus Disease
Overview of Protein Metabolism
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
Intestinal Obstruction II: Pathophysiology
Enteral Nutrition I: Orogastric and Nasogastric Feeding
Orogastric (OG) and nasogastric (NG) feeding are two standard methods used for enteral nutrition. Enteral nutrition is often preferred over...
