Update on cytomegalovirus infections of the gastrointestinal system in solid organ transplant recipients

Area of Science:

• Gastroenterology
• Infectious Diseases
• Transplantation Medicine

Background:

• Gastrointestinal (GI) Cytomegalovirus (CMV) infection is the most frequent invasive CMV disease in solid organ transplantation (SOT) recipients.
• It significantly contributes to morbidity, mortality, and impaired allograft function in this vulnerable population.
• Common clinical presentations include esophagitis, colitis, and hepatitis, but infection can affect any part of the GI tract.

Purpose of the Study:

• To review recent data on the clinical manifestations, diagnosis, treatment, and prevention of GI CMV infection in SOT recipients.
• To highlight the impact of GI CMV disease on patient outcomes and allograft survival.
• To provide an overview of current management strategies and emerging challenges.

Main Methods:

• Literature review of recent studies and clinical data.
• Synthesis of information on diagnostic approaches, including histopathology, viral culture, and molecular assays.
• Analysis of therapeutic strategies, focusing on antiviral agents and preventive measures.

Main Results:

• GI CMV infection presents with diverse clinical syndromes, necessitating accurate and timely diagnosis.
• Antiviral therapy is the primary treatment, though challenges like recurrent infections and antiviral resistance exist.
• Prevention strategies, including prophylaxis and preemptive therapy, play a vital role in managing GI CMV disease.

Conclusions:

• GI CMV infection poses a substantial risk to SOT recipients, impacting both short-term and long-term outcomes.
• Effective management requires a multi-faceted approach encompassing early diagnosis, appropriate antiviral treatment, and strategic prevention.
• Continued research is needed to address challenges such as antiviral resistance and optimize patient care.