PMID- 20799048 OWN - NLM STAT- MEDLINE DCOM- 20110815 LR - 20180509 IS - 1437-7780 (Electronic) IS - 1341-321X (Linking) VI - 17 IP - 2 DP - 2011 Apr TI - Immune reconstitution to parvovirus B19 and resolution of anemia in a patient treated with highly active antiretroviral therapy. PG - 283-7 LID - 10.1007/s10156-010-0111-3 [doi] AB - Immune reconstitution inflammatory syndrome (IRIS) is an unsolved problem in the treatment of human immunodeficiency virus (HIV)-1 infection. Despite the high seroprevalence of parvovirus B19 (PVB19) among HIV-1-positive patients, reports on PVB19-induced anemia, especially that associated with PVB19-related IRIS, in these patients are limited. We present the case of a man with acquired immunodeficiency syndrome who developed severe transfusion-dependent anemia and was seropositive and borderline positive for immunoglobulin-M and IgG antibodies against PVB19, respectively. PVB19-DNA was also detected in his serum. The patient was diagnosed with pure red cell anemia (PRCA) caused by a primary PVB19 infection and was treated with periodical blood transfusions. However, he subsequently tested negative for IgG antibodies and developed chronic severe anemia with high levels of PVB19 viremia. This indicated a transition from primary to persistent infection. After initiation of highly active antiretroviral therapy, the patient showed an inflammatory reaction with rapid deterioration of anemia and seroconversion of the IgG antibody to PVB19. Subsequently, PRCA was completely resolved, but the patient's serum still contained low levels of PVB19-DNA. Thus, this was a case of IRIS associated with PVB19 infection. Our report highlights the significance of seroconversion to PVB19 in the diagnosis of IRIS and re-emphasizes the finding that persistently high levels of PVB19 viremia after primary infection are probably because of the lack of protective antibodies. FAU - Watanabe, Dai AU - Watanabe D AD - AIDS Medical Center, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka, Osaka, 540-0006, Japan. dai@onh.go.jp FAU - Taniguchi, Tomohiro AU - Taniguchi T FAU - Otani, Naruhito AU - Otani N FAU - Tominari, Shinjiro AU - Tominari S FAU - Nishida, Yasuharu AU - Nishida Y FAU - Uehira, Tomoko AU - Uehira T FAU - Shirasaka, Takuma AU - Shirasaka T LA - eng PT - Case Reports PT - Journal Article DEP - 20100827 PL - Netherlands TA - J Infect Chemother JT - Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy JID - 9608375 SB - IM MH - AIDS-Related Opportunistic Infections/*immunology/virology MH - Antiretroviral Therapy, Highly Active/*adverse effects MH - Erythema Infectiosum/*immunology/virology MH - HIV Infections/complications/*drug therapy/immunology MH - Humans MH - Immune Reconstitution Inflammatory Syndrome/*immunology MH - Male MH - Middle Aged MH - *Parvovirus B19, Human EDAT- 2010/08/28 06:00 MHDA- 2011/08/16 06:00 CRDT- 2010/08/28 06:00 PHST- 2010/04/13 00:00 [received] PHST- 2010/08/02 00:00 [accepted] PHST- 2010/08/28 06:00 [entrez] PHST- 2010/08/28 06:00 [pubmed] PHST- 2011/08/16 06:00 [medline] AID - S1341-321X(11)70530-X [pii] AID - 10.1007/s10156-010-0111-3 [doi] PST - ppublish SO - J Infect Chemother. 2011 Apr;17(2):283-7. doi: 10.1007/s10156-010-0111-3. Epub 2010 Aug 27.