PMID- 33045641 OWN - NLM STAT- MEDLINE DCOM- 20210917 LR - 20210917 IS - 1873-5967 (Electronic) IS - 1386-6532 (Linking) VI - 132 DP - 2020 Nov TI - Inherited chromosomally integrated human herpesvirus 6 and autoimmune connective tissue diseases. PG - 104656 LID - S1386-6532(20)30398-X [pii] LID - 10.1016/j.jcv.2020.104656 [doi] AB - BACKGROUND: Entire genome of human herpesvirus 6 (HHV-6) that integrates into human chromosomes is called chromosomally integrated HHV-6 (ciHHV-6). Several viral infections have been suggested to be involved in autoimmune connective tissue diseases (CTDs). Reactivated HHV-6 from the integrated viral genome can induce immune responses against the virus. Thus, it is plausible that ciHHV-6 is associated with autoimmune CTDs. OBJECTIVES: We sought to determine whether the prevalence of ciHHV-6 was significantly higher in patients with autoimmune CTDs than in a healthy population. STUDY DESIGN: A total of 846 peripheral blood samples collected from autoimmune CTD patients were analyzed. Since there was a large number of samples, they were pooled into 24 samples per group. Copy numbers of HHV-6 DNA were measured by real-time PCR. The threshold level for distinguishing between ciHHV-6 and active viral infection and the reliability of pooled DNA analysis were examined as initial validation experiments. RESULTS: The threshold level was 1.6 x 10;6 copy/mL in whole blood. The reliability of pooled DNA analysis to identify one ciHHV-6 sample among 23 HHV-6 DNA-negative samples was high. No HHV-6 DNA was detected in any of the pooled DNA samples collected from the patients. The probability of the present study including the 846 autoimmune CTD patient's samples was statistically not different with a healthy Japanese population which was 0.2 % or 0.6 %. CONCLUSIONS: There was no significant difference in the prevalence of ciHHV-6 between a healthy population and patients with autoimmune CTDs. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Kawamura, Yoshiki AU - Kawamura Y AD - Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan. Electronic address: yoshiki@fujita-fujita.ac.jp. FAU - Hashimoto, Takako AU - Hashimoto T AD - Division of Rheumatology, Department of Internal Medicine, Fujita Health University School of Medicine, Toyoake, Aichi, Japan. FAU - Miura, Hiroki AU - Miura H AD - Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan. FAU - Kozawa, Kei AU - Kozawa K AD - Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan. FAU - Yoshikawa, Akiko AU - Yoshikawa A AD - Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan. FAU - Ikeda, Naomi AU - Ikeda N AD - Division of Rheumatology, Department of Internal Medicine, Fujita Health University School of Medicine, Toyoake, Aichi, Japan. FAU - Yatsuya, Hiroshi AU - Yatsuya H AD - Department of Public Health, Fujita Health University School of Medicine, Toyoake, Aichi, Japan. FAU - Yasuoka, Hidekata AU - Yasuoka H AD - Division of Rheumatology, Department of Internal Medicine, Fujita Health University School of Medicine, Toyoake, Aichi, Japan. FAU - Yoshikawa, Tetsushi AU - Yoshikawa T AD - Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201005 PL - Netherlands TA - J Clin Virol JT - Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology JID - 9815671 RN - 0 (DNA, Viral) SB - IM MH - *Connective Tissue Diseases/genetics MH - DNA, Viral/genetics MH - *Herpesvirus 6, Human/genetics MH - Humans MH - Reproducibility of Results MH - *Roseolovirus Infections/epidemiology MH - Virus Integration OTO - NOTNLM OT - Autoimmune connective tissue disease OT - Chromosomally integrated human herpesvirus 6 OT - Human herpesvirus 6 EDAT- 2020/10/13 06:00 MHDA- 2021/09/18 06:00 CRDT- 2020/10/12 20:14 PHST- 2020/06/15 00:00 [received] PHST- 2020/09/27 00:00 [revised] PHST- 2020/10/03 00:00 [accepted] PHST- 2020/10/13 06:00 [pubmed] PHST- 2021/09/18 06:00 [medline] PHST- 2020/10/12 20:14 [entrez] AID - S1386-6532(20)30398-X [pii] AID - 10.1016/j.jcv.2020.104656 [doi] PST - ppublish SO - J Clin Virol. 2020 Nov;132:104656. doi: 10.1016/j.jcv.2020.104656. Epub 2020 Oct 5.