The clinical features of infection with human herpesvirus 7 (HHV-7) are not well described. Exanthem subitum is the only illness that is confirmed to be caused by HHV-7. We report two children who had exanthem subitum associated with central nervous system manifestations. Two strains of HHV-7 were isolated sequentially from peripheral blood mononuclear cells and saliva of the some child who had exanthem subitum complicated with acute hemiplegia in childhood. Two strains were confirmed to be HHV-7 by means of monoclonal antibodies to human herpesvirus 6 (HHV-6) and HHV-7, polymerase chain reaction, and DNA analysis. During the convalescent period, the antibody titer to HHV-7 rose from less than 1:10 to 1:320, whereas the antibody titer to HHV-6 remained less than 1:10. Another child with exanthem subitum complicated by acute hemiplegia had serologic evidence of primary HHV-7 infection. These two cases demonstrate a new relationship between HHV-7 and central nervous system symptoms.
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http://dx.doi.org/10.1016/s0022-3476(96)70259-7 | DOI Listing |
Surg Neurol Int
August 2024
Division of Pediatric Neurosurgery, Children's Hospital Orange County, Orange, California, United States.
Cureus
January 2024
Family Medicine, Louisiana State University Health Sciences Center, Alexandria, USA.
Curr Opin Infect Dis
April 2023
Institute of Dermatology, 'Santa Maria della Misericordia' University Hospital, Udine, Italy.
Children (Basel)
December 2022
Life Science Research Center, Nagano Children's Hospital, 3100 Toyoshina, Azumino 399-8288, Japan.
Background: Acute encephalopathy with biphasic seizures and late reduced diffusion (AESD) is the most frequent subtype of acute encephalopathy syndrome among Japanese children. Exanthem subitum is the most common causative infectious disease of AESD. We herein retrospectively analyzed serum and cerebrospinal fluid (CSF) concentrations of matrix metalloproteinase-9 (MMP-9), tissue inhibitor matrix metalloproteinase-1 (TIMP-1), and seven cytokines in patients with AESD or prolonged febrile seizure (FS) to assess the pathophysiology of AESD and detect biomarkers for diagnosing AESD in the early phase.
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