Human herpesvirus 6 (HHV-6) is detected in the plasma of approximately 40% of patients undergoing hematopoietic cell transplantation (HCT) and sporadically causes encephalitis in this population. The effect of HHV-6 reactivation on central nervous system function has not been fully characterized. This prospective study aimed to evaluate associations between HHV-6 reactivation and central nervou...

BACKGROUND AND PURPOSE Pityriasis rosea (PR) is a common papulosquamous skin disease with unknown etiology. The possible relationship of PR with human herpesvirus infection (HHV) has been extensively studied. This study used the polymerase chain reaction (PCR) to investigate the presence of human herpesvirus 6 and 7 (HHV-6 and HHV-7) in 41 PR patients from two hospitals in Northern Taiwan. The ...

Commentary " The FEBSTAT [Consequences of Prolonged Febrile Seizures in Childhood] study was designed to prospectively examine the association between prolonged febrile seizures and development of HS [hippocampal sclerosis] and associated temporal Human Herpesvirus 6 and 7 in Febrile Status Epilepticus: The FEBSTAT Study. PURPOSE: In a prospective study, Consequences of Prolonged Febrile Seizur...

A potential association between human herpesvirus 6 (HHV-6) and cytomegalovirus (CMV) following kidney transplantation was explored by retrospectively testing serial serum specimens for HHV-6 IgG and IgM antibody. HHV-6 reactivation occurred in 35 (66%) of 53 transplant recipients. Fungal or parasitic opportunistic infections, graft rejection or loss, and mortality were not associated with HHV-...

We identified a stem cell donor with chromosomally integrated human herpesvirus (HHV)-6 and monitored the recipient for HHV-6 after transplantation. The appearance and subsequent increase in HHV-6 load paralleled engraftment and an increase in white blood cell count. Fluorescent in situ hybridization analysis showed integrated HHV-6 on chromosome band 17p13.3 in the donor and in the recipient a...

In search of a possible involvement of the human herpesvirus type 6 (HHV-6) in human Hodgkin's and non-Hodgkin's lymphomas, we studied the levels of anti-HHV-6 antibodies in the sera of 94 cases by an immunofluorescence assay, as well as the presence of HHV-6 sequences in the affected tissues of 66 cases by polymerase chain reaction, using one set of primer oligonucleotides. Our results showed ...

Purpose:Human herpesvirus-6 (HHV-6) is reportedly associated with various chronic neurological diseases; however, no study has analyzed the association between HHV-6 infection and antiphospholipid syndrome (APS). This study aimed to establish a relationship between primary HHV-6 infection and APS. Methods: The prevalence of antiphospholipid antibodies (aPLs), including anticardiolipin-IgG (aCL-...

Human herpesvirus 6 (HHV-6) is an important immunosuppressive and immunomodulatory virus that primarily infects immune cells and strongly suppresses the proliferation of infected cells. However, the mechanisms responsible for the regulation and suppression mediated by HHV-6 are still unknown. In this study, we examined the ability of HHV-6A to manipulate cell cycle progression in infected cells...

A unique feature of both human herpesvirus 6A and B (HHV-6A and B) among human herpesviruses is their ability to integrate into chromosomal telomeres. In some individuals integrated viral genomes are present in the germ-line and result in the vertical transmission of HHV-6; however, little is known about the disease associations of germ-line transmitted, chromosomally integrated HHV-6 (ciHHV-6)...

Throughout the years, a long list of viruses has been associated with multiple sclerosis (MS), however no virus to date has been definitively identified as the etiologic agent of this disease. Recently, human herpesvirus 6 (HHV-6), a newly described herpesvirus, has been suggested to play a role in MS based on: immunohistochemical demonstration of HHV-6 in MS plaques, increased antibodies respo...