PMID- 1337558 OWN - NLM STAT- MEDLINE DCOM- 19930316 LR - 20110727 IS - 0047-1852 (Print) IS - 0047-1852 (Linking) VI - 50 IP - 11 DP - 1992 Nov TI - [Chronic fatigue syndrome and virus infection: human herpesvirus 6 (HHV-6) infection]. PG - 2612-6 AB - Chronic fatigue syndrome (CFS) is newly-recognized disease characterized by chronic and debilitating fatigue. It has been suggested that viral infection may be involved in this syndrome from the results of clinical examination, including increased activity of 2',5'-synthetase in leukocytes of patients. The following viruses have been reported as etiologic agents of this disease. First, many studies have found elevated levels of IgG to viral capsid antigen and early antigens to Epstein-Barr virus (EBV), but low titer or absence of antibody to EBV-associated nuclear antigen. Second, the enteroviruses have also been implicated as possible causative agent of CFS, because virus could be isolated from patients. Recently it was also reported that antibodies to human T-lymphotropic virus (HTLV) and HTLV type II (HTLV-II) gag sequence were detectable in patients. Finally several reports state that human herpesvirus 6 (HHV-6) could be isolated from CFS patients in the high frequency. In conclusion, it is still early to identify the etiologic agent from these reports, and more effort is needed. FAU - Yamanishi, K AU - Yamanishi K AD - Research Institute for Microbial Diseases, Osaka University. LA - jpn PT - English Abstract PT - Journal Article PT - Review PL - Japan TA - Nihon Rinsho JT - Nihon rinsho. Japanese journal of clinical medicine JID - 0420546 RN - 0 (Immunoglobulin G) RN - 0 (Immunoglobulin M) SB - IM MH - Fatigue Syndrome, Chronic/*etiology MH - Herpesviridae Infections/*complications/diagnosis MH - *Herpesvirus 6, Human/immunology MH - Humans MH - Immunoglobulin G/analysis MH - Immunoglobulin M/analysis MH - Virus Activation RF - 19 EDAT- 1992/11/01 00:00 MHDA- 1992/11/01 00:01 CRDT- 1992/11/01 00:00 PHST- 1992/11/01 00:00 [pubmed] PHST- 1992/11/01 00:01 [medline] PHST- 1992/11/01 00:00 [entrez] PST - ppublish SO - Nihon Rinsho. 1992 Nov;50(11):2612-6.