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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
Role of cytomegalovirus in inducing congenital anomalies
A A Shaaban1, T A Abdel-Raoof, M A Mohamed
1Department of Microbiology & Immunology, Faculty of Medicine, Ain Shams University, Cairo.
Insights
Cytomegalovirus IgM antibodies (CMV IgM) were detected in 6 out of 68 infants, suggesting a potential role in congenital anomalies. Asymptomatic CMV infections in controls highlight the need for ongoing infant monitoring.
Area of Science:
- Virology
- Neonatology
- Pediatric Infectious Diseases
Background:
- Congenital cytomegalovirus (CMV) infection is a leading cause of non-genetic congenital anomalies.
- Early detection and intervention are crucial for managing potential long-term sequelae.
Purpose of the Study:
- To investigate the prevalence of cytomegalovirus IgM antibodies (CMV IgM) in newborns with congenital anomalies.
- To explore the association between CMV IgM and specific congenital anomalies like microcephaly, cerebral palsy, and jaundice.
Main Methods:
- Serum samples from 68 infants (55 with congenital anomalies, 13 controls) were analyzed.
- Microassay ELISA technique was employed to detect CMV IgM antibodies.
Main Results:
- CMV IgM antibodies were found in 6 out of 68 infants (8.8% overall).
- Four congenital anomaly cases (7.3%) and two control cases (15.4%) tested positive for CMV IgM.
- Jaundiced infants showed higher CMV IgM positivity (14.3%) compared to microcephalic (5.9%) and cerebral palsy (0%) groups.
Conclusions:
- The study suggests a potential link between CMV infection and congenital anomalies, particularly jaundice.
- Asymptomatic CMV infections in healthy infants warrant close follow-up due to potential long-term risks like hearing or vision impairment.
- Continuous monitoring of infants with asymptomatic CMV infection is essential for early management of potential developmental abnormalities.
Abstract:
Sixty eight infants and newborns were included in the present study being consisted of 55 cases with congenital anomalies and 13 cases of apparently healthy infants acting as controls. Three types of congenital anomaly cases were studied; 17 cases of microcephaly, 17 cases of cerebral palsy and 21 cases with jaundice. All serum samples were tested for cytomegalovirus IgM antibodies (CMV IgM) by microassay ELISA technique to explore the role of CMV infection in inducing congenital anomalies. Six out of the 68 serum samples were found to be positive for CMV IgM. Four of them were detected among the congenital cases (5 our to 55; 7.3%), while 2 cases were among the controls (2 out of 13; 15.4%). The microcephalic group showed 5.9% positivity (one out of 17). The jaundiced infants showed 14.3% positivity (3 out of 21), while all the cerebral palsy cases were negative for CMV IgM. Such a high percentage of CMV IgM in the control group may be attributed to asymptomatic infection, with liability for long term sequelae, particularly hearing loss or ocular abnormalities by 2 years of age. So, continuous follow-up of such asymptomatic cases is essential to control any possible congenital abnormality as early as possible.
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