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Eye pathology associated with measles encephalitis in hamsters
M A Khalifa1, M M Rodrigues, S Rajagopalan
1Department of Ophthalmology, University of Maryland, Baltimore.
Archives of Virology
|January 1, 1991
Summary
Measles encephalitis in hamsters showed age-dependent ocular lesions. Newborn hamsters developed retinal dysplasia, while older hamsters experienced acute keratitis and hemorrhages, followed by retinitis.
Area of Science:
- Virology
- Ophthalmology
- Neurology
Background:
- Measles virus can cause neurological complications, including encephalitis.
- Ocular manifestations of measles virus infection are not well-characterized in animal models.
Purpose of the Study:
- To investigate the development of measles encephalitis and associated ocular lesions in hamsters of different ages.
- To characterize the clinical and histological progression of measles encephalitis and ocular involvement.
Main Methods:
- Intracerebral inoculation of a hamster-neuroadapted measles virus strain (Mantooth HBS) into newborn (2-day old) and juvenile (25-day old) hamsters.
- Clinical observation and histological examination of brain and ocular tissues at various time points post-inoculation.
Main Results:
- All infected hamsters developed measles encephalitis, confirmed by clinical and histological findings.
- Ocular lesions differed based on hamster age: newborn hamsters showed retinal folds (retinal dysplasia), while 25-day old hamsters exhibited acute measles keratitis, retinal hemorrhages, and later retinitis.
- The severity of ocular involvement did not correlate with the severity of measles encephalitis.
Conclusions:
- Hamster age significantly influences the type and progression of ocular lesions during measles encephalitis.
- This model provides insights into age-dependent pathogenesis of measles virus in the central nervous system and eyes.
- Further research can explore the mechanisms underlying these age-specific ocular manifestations.