PMID- 37019047 OWN - NLM STAT- MEDLINE DCOM- 20230418 LR - 20230420 IS - 1873-6815 (Electronic) IS - 0531-5565 (Linking) VI - 175 DP - 2023 May TI - Similarities and differences in kinetic characteristics of airways inflammation, formation of inducible bronchial-associated lymphoid tissue and remodeling between young and old murine asthma surrogates induced with house dust mite. PG - 112160 LID - S0531-5565(23)00081-5 [pii] LID - 10.1016/j.exger.2023.112160 [doi] AB - Elderly asthmatics have higher morbidity and mortality compared with those of youngers. It has been shown that there are also some differences in clinic phenomena between young and elderly asthmatics, however, there is lack of the kinetic comparisons of the changes in the development of asthma between two populations. To better understand the specific pathophysiological manifestations in older patients with asthma, we dynamically and parallelly compared pathophysiological changes in the airways and lung tissues between young and old murine asthma surrogates based on sensitization and challenge with house dust mite (HDM). Murine models were established in young (6-8-week-old) and old (16-17-month-old) female wild-type C57BL/6 mice. Our data showed that repetitive HDM exposure induced relatively low type 2 immune responses (airway hyperresponsiveness, eosinophils recruitment, expression of type 2 cytokines, mucus secretion, serum HDM specific immunoglobulin E (IgE) and IgG) in old mice. However, the type 3 immune responses (neutrophils infiltration and IL-17A expression) were enhanced in old HDM exposed mice, which sustained longer and higher than that of young mice. Notably, the relatively weakened allergic inflammation characteristics might be associated with lower numbers of CD20(+) B cells and IgE(+) cells in the iBALTs in old mice compared with those in young mice. Our data suggest that aging might compromise the ability to induce type 2 immune responses, but enhance type 3 immune responses upon repetitive HDM challenge, which might cause relevant phenomena in old experimental mice and might even be applicable to elderly patients with asthma in the clinic. CI - Copyright (c) 2023. Published by Elsevier Inc. FAU - Fu, Tingting AU - Fu T AD - Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University & Beijing Institute of Respiratory Medicine, Beijing, China. FAU - Liu, Jing AU - Liu J AD - Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University & Beijing Institute of Respiratory Medicine, Beijing, China. FAU - Wang, Wenjun AU - Wang W AD - Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University & Beijing Institute of Respiratory Medicine, Beijing, China. FAU - Li, Yan AU - Li Y AD - Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otorhinolaryngology, Key Laboratory of Otorhinolaryngology Head and Neck Surgery, Ministry of Education, Beijing Key Laboratory of Nasal Diseases, Beijing, China. FAU - Wang, Yunhan AU - Wang Y AD - Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University & Beijing Institute of Respiratory Medicine, Beijing, China. FAU - Cui, Lele AU - Cui L AD - Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China. FAU - Liu, Meishan AU - Liu M AD - Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University & Beijing Institute of Respiratory Medicine, Beijing, China. FAU - Wang, Wei AU - Wang W AD - Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China. FAU - Ying, Sun AU - Ying S AD - Department of Immunology, School of Basic Medical Sciences, Capital Medical University, Beijing, China. Electronic address: ying.sun@ccmu.edu.cn. FAU - Huang, Kewu AU - Huang K AD - Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University & Beijing Institute of Respiratory Medicine, Beijing, China. Electronic address: kewuhuang@126.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230403 PL - England TA - Exp Gerontol JT - Experimental gerontology JID - 0047061 RN - 0 (Cytokines) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Female MH - Animals MH - Mice MH - *Pyroglyphidae/metabolism MH - Mice, Inbred C57BL MH - *Asthma/metabolism MH - Lung MH - Inflammation/metabolism MH - Cytokines/metabolism MH - Immunoglobulin E/metabolism MH - Lymphoid Tissue MH - Disease Models, Animal OTO - NOTNLM OT - Aging OT - Asthma OT - Immune responses OT - Inducible bronchial-associated lymphoid tissue OT - Mouse model COIS- Declaration of competing interest The authors declare no conflicts of interest. EDAT- 2023/04/06 06:00 MHDA- 2023/04/18 06:42 CRDT- 2023/04/05 18:08 PHST- 2023/01/04 00:00 [received] PHST- 2023/03/22 00:00 [revised] PHST- 2023/03/23 00:00 [accepted] PHST- 2023/04/18 06:42 [medline] PHST- 2023/04/06 06:00 [pubmed] PHST- 2023/04/05 18:08 [entrez] AID - S0531-5565(23)00081-5 [pii] AID - 10.1016/j.exger.2023.112160 [doi] PST - ppublish SO - Exp Gerontol. 2023 May;175:112160. doi: 10.1016/j.exger.2023.112160. Epub 2023 Apr 3.