PMID- 26119690 OWN - NLM STAT- MEDLINE DCOM- 20150930 LR - 20220318 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 464 IP - 1 DP - 2015 Aug 14 TI - Intravenous immunoglobulin enhances the killing activity and autophagy of neutrophils isolated from immunocompromised patients against multidrug-resistant bacteria. PG - 94-9 LID - S0006-291X(15)30059-0 [pii] LID - 10.1016/j.bbrc.2015.06.004 [doi] AB - Intravenous immunoglobulin (IVIG) is periodically administered to immunocompromised patients together with antimicrobial agents. The evidence that supports the effectiveness of IVIG is mostly based on data from randomized clinical trials; the underlying mechanisms are poorly understood. A recent study revealed that killing of multidrug-resistant bacteria and drug-sensitive strains by neutrophils isolated from healthy donors is enhanced by an IVIG preparation. However, the effectiveness of IVIG in immunocompromised patients remains unclear. The present study found that IVIG increased both killing activity and O2(-) release by neutrophils isolated from six patients receiving immune-suppressive drugs after hematopoietic stem cell transplantation (HSCT); these neutrophils killed both multidrug-resistant extended-spectrum beta-lactamase-producing Escherichia coli (E. coli) and multidrug-resistant Pseudomonas aeruginosa (P. aeruginosa). Moreover, IVIG increased the autophagy of the neutrophils, which is known to play an important role in innate immunity. These results suggest that IVIG promotes both the killing activity and autophagy of neutrophils isolated from immunocompromised patients against multidrug-resistant bacteria. CI - Copyright (c) 2015 Elsevier Inc. All rights reserved. FAU - Matsuo, Hidemasa AU - Matsuo H AD - Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan; Department of Clinical Laboratory, Kyoto University Hospital, Kyoto 606-8507, Japan. FAU - Itoh, Hiroshi AU - Itoh H AD - Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan. FAU - Kitamura, Naoko AU - Kitamura N AD - Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan. FAU - Kamikubo, Yasuhiko AU - Kamikubo Y AD - Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan. FAU - Higuchi, Takeshi AU - Higuchi T AD - Department of Clinical Laboratory, Kyoto University Hospital, Kyoto 606-8507, Japan. FAU - Shiga, Shuichi AU - Shiga S AD - Department of Clinical Laboratory, Kyoto University Hospital, Kyoto 606-8507, Japan. FAU - Ichiyama, Satoshi AU - Ichiyama S AD - Department of Infection Control and Prevention, Kyoto University Hospital, Kyoto 606-8507, Japan. FAU - Kondo, Tadakazu AU - Kondo T AD - Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan. FAU - Takaori-Kondo, Akifumi AU - Takaori-Kondo A AD - Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan. FAU - Adachi, Souichi AU - Adachi S AD - Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan. Electronic address: adachiso@kuhp.kyoto-u.ac.jp. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150625 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Anti-Bacterial Agents) RN - 0 (Immunoglobulins, Intravenous) RN - 0 (Immunosuppressive Agents) RN - 11062-77-4 (Superoxides) RN - EC 3.5.2.6 (beta-Lactamases) SB - IM MH - Adult MH - Anti-Bacterial Agents/pharmacology MH - Autophagy/drug effects/immunology MH - Coculture Techniques MH - Drug Resistance, Multiple, Bacterial MH - Escherichia coli/drug effects/growth & development/immunology MH - Female MH - Hematologic Neoplasms/*immunology/pathology/therapy MH - Hematopoietic Stem Cell Transplantation MH - Humans MH - *Immunocompromised Host MH - Immunoglobulins, Intravenous/*administration & dosage MH - Immunosuppressive Agents/*therapeutic use MH - Male MH - Microbial Sensitivity Tests MH - Middle Aged MH - Neutrophils/cytology/drug effects/*immunology MH - Primary Cell Culture MH - Pseudomonas aeruginosa/drug effects/growth & development/immunology MH - Superoxides/*agonists/metabolism MH - beta-Lactamases/biosynthesis OTO - NOTNLM OT - Autophagy OT - Immunocompromised host OT - Intravenous immunoglobulin OT - Multidrug-resistant bacteria OT - Neutrophil EDAT- 2015/06/30 06:00 MHDA- 2015/10/01 06:00 CRDT- 2015/06/30 06:00 PHST- 2015/05/11 00:00 [received] PHST- 2015/06/02 00:00 [accepted] PHST- 2015/06/30 06:00 [entrez] PHST- 2015/06/30 06:00 [pubmed] PHST- 2015/10/01 06:00 [medline] AID - S0006-291X(15)30059-0 [pii] AID - 10.1016/j.bbrc.2015.06.004 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2015 Aug 14;464(1):94-9. doi: 10.1016/j.bbrc.2015.06.004. Epub 2015 Jun 25.