PMID- 32962816 OWN - NLM STAT- MEDLINE DCOM- 20211104 LR - 20211104 IS - 1878-3279 (Electronic) IS - 0171-2985 (Linking) VI - 225 IP - 5 DP - 2020 Sep TI - Different roles of intracellular and extracellular reactive oxygen species of neutrophils in type 2 diabetic mice with invasive aspergillosis. PG - 151996 LID - S0171-2985(20)30339-9 [pii] LID - 10.1016/j.imbio.2020.151996 [doi] AB - Diabetic patients have an increased risk of invasive aspergillosis (IA), but the mechanism is still unclear. Reactive oxygen species (ROS) produced by neutrophils play a key role in defense against Aspergillus infection. Since diabetes mellitus affects the production of ROS from neutrophils, the purpose of this study is to investigate whether this effect is related to the susceptibility of diabetic mice to IA. C57BL/6 mice were used to establish type 2 diabetes mellitus (T2DM) model, and IA was induced by airway infection with Aspergillus fumigatus. After infection, the fungal load, neutrophil count and ROS content in the lung tissues of T2DM mice were higher than those in the control mice, and the inflammation of the lung tissue was more serious. After being exposed to hyphae in vitro, compared with the control group, neutrophils in T2DM mice had higher apoptosis rate and intracellular ROS content, as well as lower viability, extracellular ROS content and fungicidal ability. In summary, after T2DM mice are infected with A. fumigatus, the reduction of extracellular ROS produced by neutrophils may lead to a decrease in fungicidal ability, while the increase of intracellular ROS is related to neutrophil and lung tissue damage. CI - Copyright (c) 2020. Published by Elsevier GmbH. FAU - Xu, Xianghua AU - Xu X AD - Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital (Changhai Hospital), Naval Medical University, Changhai Road 168, Yangpu, Shanghai 200433, China. Electronic address: ccrysy@sina.com. FAU - Xia, Chu AU - Xia C AD - Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital (Changhai Hospital), Naval Medical University, Changhai Road 168, Yangpu, Shanghai 200433, China. Electronic address: xia.tianyu@163.com. FAU - Huang, Yi AU - Huang Y AD - Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital (Changhai Hospital), Naval Medical University, Changhai Road 168, Yangpu, Shanghai 200433, China. Electronic address: huangliur@163.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200801 PL - Netherlands TA - Immunobiology JT - Immunobiology JID - 8002742 RN - 0 (IL1B protein, mouse) RN - 0 (Interleukin-1beta) RN - 0 (Reactive Oxygen Species) RN - 0 (Tnf protein, mouse) RN - 0 (Tumor Necrosis Factor-alpha) RN - EC 1.11.1.7 (Peroxidase) RN - EC 1.6.3.- (Cybb protein, mouse) RN - EC 1.6.3.- (NADPH Oxidase 2) SB - IM MH - Animals MH - Apoptosis MH - Aspergillosis/*immunology/microbiology MH - *Aspergillus fumigatus MH - Bronchoalveolar Lavage Fluid/cytology/immunology MH - Cell Survival MH - Diabetes Mellitus, Experimental/*immunology/microbiology MH - Diabetes Mellitus, Type 2/*immunology/microbiology MH - Interleukin-1beta/immunology MH - Leukocyte Count MH - Lung/immunology MH - Lung Diseases/*immunology/microbiology MH - Male MH - Mice, Inbred C57BL MH - NADPH Oxidase 2/immunology MH - Neutrophils/*immunology MH - Peroxidase/immunology MH - Reactive Oxygen Species/*immunology MH - Tumor Necrosis Factor-alpha/immunology OTO - NOTNLM OT - Diabetes mellitus OT - Invasive aspergillosis OT - Neutrophil OT - Reactive oxygen species EDAT- 2020/09/24 06:00 MHDA- 2021/11/05 06:00 CRDT- 2020/09/23 06:03 PHST- 2020/06/24 00:00 [received] PHST- 2020/07/28 00:00 [revised] PHST- 2020/07/29 00:00 [accepted] PHST- 2020/09/23 06:03 [entrez] PHST- 2020/09/24 06:00 [pubmed] PHST- 2021/11/05 06:00 [medline] AID - S0171-2985(20)30339-9 [pii] AID - 10.1016/j.imbio.2020.151996 [doi] PST - ppublish SO - Immunobiology. 2020 Sep;225(5):151996. doi: 10.1016/j.imbio.2020.151996. Epub 2020 Aug 1.