PMID- 21074227 OWN - NLM STAT- MEDLINE DCOM- 20120827 LR - 20111221 IS - 1532-2661 (Electronic) IS - 0034-5288 (Linking) VI - 92 IP - 1 DP - 2012 Feb TI - Comparative study of the plasma globulin level, CD21(-) B-cell counts and FOXP3 mRNA expression level in CD4(+) T-cells for different clinical stages of feline immunodeficiency virus infected cats. PG - 157-61 LID - 10.1016/j.rvsc.2010.10.022 [doi] AB - Feline immunodeficiency virus (FIV) infection leads to hypergammaglobulinemia through mechanisms that remain poorly understood. We investigated changes in plasma globulin level, B cells, and T cells with progression of the clinical stage of FIV-infected cats. We classified FIV-infected cats into the stage of Asymptomatic carrier (AC) and AIDS-related complex (ARC) based on the clinical symptoms, and measured the plasma globulin level, the CD4(+) T-cell counts, and analyzed surface markers of B cells. We investigated the relationship between the plasma globulin level and regulatory T cells (Tregs) using the Forkhead box P3 (FOXP3) mRNA expression level. In FIV-infected cats, the plasma globulin level and the surface immunoglobulin (sIg)(+) CD21(-) B-cell counts were increased, whereas the CD4(+) T-cell counts were decreased compared with specific-pathogen free (SPF) cats. The mRNA expression of Blimp-1 (master gene of plasma cells) was increased in peripheral blood, and the FOXP3 mRNA expression level was decreased in CD4(+) T-cells. These immunological changes were marked in the ARC stage. These data indicate that the decrease of Tregs and the increase of plasma cells lead to hypergammaglobulinemia. CI - Copyright (c) 2010 Elsevier Ltd. All rights reserved. FAU - Takano, Tomomi AU - Takano T AD - Kitasato University, Towada, Aomori, Japan. FAU - Hosoya, Shinobu AU - Hosoya S FAU - Shibao, Akari AU - Shibao A FAU - Nagasaki, Bunpei AU - Nagasaki B FAU - Yoshioka, Hisao AU - Yoshioka H FAU - Satoh, Ryoichi AU - Satoh R FAU - Hohdatsu, Tsutomu AU - Hohdatsu T LA - eng PT - Comparative Study PT - Journal Article DEP - 20101111 PL - England TA - Res Vet Sci JT - Research in veterinary science JID - 0401300 RN - 0 (Forkhead Transcription Factors) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Complement 3d) RN - 0 (Serum Globulins) SB - IM MH - Animals MH - B-Lymphocytes/*metabolism MH - CD4-Positive T-Lymphocytes/*metabolism MH - Case-Control Studies MH - Cat Diseases/*immunology/virology MH - Cats MH - Disease Progression MH - Feline Acquired Immunodeficiency Syndrome/immunology MH - Forkhead Transcription Factors/metabolism MH - Hypergammaglobulinemia/immunology/*veterinary/virology MH - *Immunodeficiency Virus, Feline/immunology MH - Lentivirus Infections/immunology/*veterinary MH - Lymphocyte Count/veterinary MH - RNA, Messenger/analysis MH - Receptors, Complement 3d/metabolism MH - Serum Globulins/*metabolism MH - T-Lymphocytes, Regulatory/metabolism EDAT- 2010/11/16 06:00 MHDA- 2012/08/28 06:00 CRDT- 2010/11/16 06:00 PHST- 2010/08/16 00:00 [received] PHST- 2010/10/15 00:00 [revised] PHST- 2010/10/20 00:00 [accepted] PHST- 2010/11/16 06:00 [entrez] PHST- 2010/11/16 06:00 [pubmed] PHST- 2012/08/28 06:00 [medline] AID - S0034-5288(10)00374-7 [pii] AID - 10.1016/j.rvsc.2010.10.022 [doi] PST - ppublish SO - Res Vet Sci. 2012 Feb;92(1):157-61. doi: 10.1016/j.rvsc.2010.10.022. Epub 2010 Nov 11.