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Use of In vivo Imaging to Monitor the Progression of Experimental Mouse Cytomegalovirus Infection in Neonates
Published on: July 6, 2013
[Pathology of human cytomegalovirus infection in immunocompromised hosts]
Insights
Histopathological diagnosis of human cytomegalovirus (HCMV) relies on detecting cytomegalic inclusions. Immunohistology and in situ hybridization confirm HCMV in immunocompromised hosts, crucial for managing severe gastrointestinal and retinal infections.
Area of Science:
- Pathology
- Virology
- Histopathology
Context:
- Human cytomegalovirus (HCMV) infections pose significant risks, particularly in immunocompromised individuals.
- Diagnosis and understanding of HCMV pathology are critical for patient management.
Purpose:
- To review histopathological diagnostic methods for HCMV.
- To describe the pathology of HCMV infection in immunocompromised hosts.
- To highlight diagnostic techniques and clinical implications.
Summary:
- Histological examination of stained tissue sections can reveal characteristic cytomegalic inclusions ('owl's eye').
- Immunohistochemistry for viral proteins and in situ hybridization for viral transcripts/genome aid in confirming HCMV diagnosis, detecting infected cells even without visible inclusions.
- HCMV infections in immunocompromised individuals may lack overt symptoms but can lead to severe gastrointestinal and retinal complications.
Impact:
- Improved diagnostic accuracy for HCMV infections.
- Enhanced understanding of HCMV pathology in vulnerable populations.
- Facilitates timely intervention for severe HCMV-related conditions like gastrointestinal and retinal disease.
Abstract:
We reviewed the histopathological diagnosis of human cytomegalovirus (HCMV) and the pathology of HCMV infection in immunocompromised hosts. For histological diagnosis, routine staining of paraffin sections of formalin fixed tissue obtained at biopsy and autopsy is important to detect cytomegalic inclusion (owl's eye). For confirmation of HCMV diagnosis, immunohistological detection of immediate early and structural proteins of HCMV is valuable. Cytomegalic inclusion contains a Cowdry A inclusion consisting nucleocapsid and electron dense networks in the nucleus and sometime many dense bodies in the cytoplasm. In situ hybridization for viral transcripts and genome and immunohistological detection of immediate early proteins occasionally reveal HCMV-infected cells not showing cytomegalic inclusion. HCMV infections in immunocompromised hosts are not always associated with apparent clinical manifestations. Among these infections, gastrointestinal and retinal infections are frequently associated with serious outcomes.
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