Changes in intestinal microbiota and their effects on allogeneic stem cell transplantation

Area of Science:

• Microbiology
• Immunology
• Hematology

Background:

• The human intestinal microbiota is crucial for health, maintaining homeostasis and immune tolerance.
• Alterations in gut microbial composition and function are linked to various systemic conditions.
• The gut microbiome's role in allogeneic stem cell transplant (allo-SCT) complications is increasingly recognized.

Purpose of the Study:

• To review the origins of gut microbiota alterations in allo-SCT patients.
• To discuss how dysbiosis contributes to allo-SCT complications.
• To highlight the need for interventions targeting dysbiosis to improve patient outcomes.

Main Methods:

• Literature review focusing on the gut microbiota and allo-SCT.
• Analysis of studies linking dysbiosis to specific complications.
• Synthesis of current understanding on dysbiosis origins and impact.

Main Results:

• Dysbiosis is implicated in Clostridium difficile infections, graft-versus-host disease (GVHD), and disease relapse post-allo-SCT.
• These complications significantly contribute to morbidity and mortality in allo-SCT recipients.
• Microbiota alterations stem from various factors related to the transplant process.

Conclusions:

• Understanding the gut microbiota's role is vital for managing allo-SCT complications.
• Developing strategies for dysbiosis treatment, detection, and prevention is critical.
• Interventions aimed at restoring a balanced microbiota may improve allo-SCT outcomes.