PMID- 30932727 OWN - NLM STAT- MEDLINE DCOM- 20201014 LR - 20201014 IS - 1439-7609 (Electronic) IS - 1439-7595 (Linking) VI - 30 IP - 3 DP - 2020 May TI - Pharmaceutical immunoglobulins reduce neutrophil extracellular trap formation and ameliorate the development of MPO-ANCA-associated vasculitis. PG - 544-550 LID - 10.1080/14397595.2019.1602292 [doi] AB - Objectives: Intravenous immunoglobulin (IVIG) therapy is effective against some autoimmune diseases. We examined the effects of pharmaceutical immunoglobulins on the development of MPO-ANCA-associated vasculitis (MPO-AAV).Methods: Peripheral blood neutrophils were pretreated with 5 mg/ml sulfo-immunoglobulins (IVIG-S) and then exposed to 100 nM phorbol myristate acetate (PMA). Thereafter, neutrophil extracellular traps (NETs) were detected by flow cytometry. Next, Wistar-Kyoto rats were given oral administration of 10 mg/kg/day propylthiouracil for 28 days and intraperitoneal (i.p.) injection of 1 mug PMA on days 0 and 7. These rats were divided into two groups: Group 1 with i.p. injection of 400 mg/kg IVIG-S on days 8-12 and Group 2 with vehicle similarly. ANCA titers were chronologically determined by indirect immunofluorescence. On day 28, all rats were killed to examine NET formation in the peritoneum and the development of AAV.Results: IVIG-S significantly inhibited NET formation induced by PMA in vitro. NET amounts in the peritoneum in Group 1 were significantly smaller than in Group 2, and ANCA titers in Group 1 were significantly lower than in Group 2. The degree of pulmonary hemorrhage in Group 1 was also smaller than in Group 2.Conclusion: IVIG-S reduce NET formation and ameliorate the development of MPO-AAV. FAU - Uozumi, Ryo AU - Uozumi R AD - Department of Medical Laboratory Science, Faculty of Health Sciences, Hokkaido University, Sapporo, Japan. AD - Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan. FAU - Iguchi, Risa AU - Iguchi R AD - Department of Medical Laboratory Science, Faculty of Health Sciences, Hokkaido University, Sapporo, Japan. FAU - Masuda, Sakiko AU - Masuda S AD - Department of Medical Laboratory Science, Faculty of Health Sciences, Hokkaido University, Sapporo, Japan. FAU - Nishibata, Yuka AU - Nishibata Y AD - Department of Medical Laboratory Science, Faculty of Health Sciences, Hokkaido University, Sapporo, Japan. FAU - Nakazawa, Daigo AU - Nakazawa D AD - Division of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan. FAU - Tomaru, Utano AU - Tomaru U AD - Department of Pathology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan. FAU - Ishizu, Akihiro AU - Ishizu A AD - Department of Medical Laboratory Science, Faculty of Health Sciences, Hokkaido University, Sapporo, Japan. LA - eng PT - Journal Article DEP - 20190412 PL - England TA - Mod Rheumatol JT - Modern rheumatology JID - 100959226 RN - 0 (Immunoglobulins, Intravenous) SB - IM MH - Animals MH - Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/*drug therapy/metabolism MH - Extracellular Traps/*metabolism MH - Immunoglobulins, Intravenous/pharmacology/*therapeutic use MH - Male MH - Neutrophils/*drug effects/metabolism MH - Rats OTO - NOTNLM OT - ANCA-associated vasculitis OT - Anti-neutrophil cytoplasmic antibody (ANCA) OT - animal model OT - intravenous immunoglobulin (IVIG) OT - neutrophil extracellular traps (NETs) EDAT- 2019/04/02 06:00 MHDA- 2020/10/21 06:00 CRDT- 2019/04/02 06:00 PHST- 2019/04/02 06:00 [pubmed] PHST- 2020/10/21 06:00 [medline] PHST- 2019/04/02 06:00 [entrez] AID - 10.1080/14397595.2019.1602292 [doi] PST - ppublish SO - Mod Rheumatol. 2020 May;30(3):544-550. doi: 10.1080/14397595.2019.1602292. Epub 2019 Apr 12.