PMID- 35222003 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220607 IS - 1663-9812 (Print) IS - 1663-9812 (Electronic) IS - 1663-9812 (Linking) VI - 12 DP - 2021 TI - Circadian Pharmacological Effects of Paeoniflorin on Mice With Urticaria-like Lesions. PG - 639580 LID - 10.3389/fphar.2021.639580 [doi] LID - 639580 AB - Paeoniflorin (PF) is a monoterpene glucoside with various biological properties, and it suppresses allergic and inflammatory responses in a rat model of urticaria-like lesions (UL). In the present study, we treated OVA-induced mice presenting UL with PF at four circadian time points (ZT22, ZT04, ZT10, and ZT16) to determine the optimal administration time of PF. The pharmacological effects of PF were assessed by analyzing the scratching behavior; histopathological features; allergic responses such as immunoglobulin E (IgE), leukotriene B4 (LTB4), and histamine (HIS) release; inflammatory cell infiltration [mast cell tryptase (MCT) and eosinophil protein X (EPX)]; and mRNA levels of inflammatory cytokines such as interleukin (IL)-12, IL-6, interferon-gamma (IFN-gamma), and IL-4. It was demonstrated that PF significantly alleviated scratching behavior and histopathological features, and ZT10 dosing was the most effective time point in remission of the condition among the four circadian time points. Moreover, PF decreased the serum levels of IgE, LTB4, and HIS, and PF administration at ZT10 produced relatively superior effectiveness. PF treatment, especially dosing at ZT10, significantly reduced the number of mast cells and granules and diminished the infiltration of MCT and EPX in the skin tissues of mice with UL. Furthermore, the oral administration of PF effectively decreased the inflammatory cytokine levels of IL-12 mRNA. In conclusion, different administration times of PF affected its efficacy in mice with UL. ZT10 administration demonstrated relatively superior effectiveness, and it might be the optimal administration time for the treatment of urticaria. CI - Copyright (c) 2022 Peng, Wen, Zhang, Zhang, Wei, Guo and Zeng. FAU - Peng, Li AU - Peng L AD - Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China. AD - Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Wen, Lijuan AU - Wen L AD - Clinical Skills Center, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Zhang, Jie AU - Zhang J AD - Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China. AD - Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Zhang, Xiaotong AU - Zhang X AD - Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China. AD - Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Wei, Qin AU - Wei Q AD - Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China. AD - Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Guo, Jing AU - Guo J AD - Chengdu University of Traditional Chinese Medicine, Chengdu, China. AD - Dermatological Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China. FAU - Zeng, Jinhao AU - Zeng J AD - Chengdu University of Traditional Chinese Medicine, Chengdu, China. AD - Geriatric Department, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China. LA - eng PT - Journal Article DEP - 20220209 PL - Switzerland TA - Front Pharmacol JT - Frontiers in pharmacology JID - 101548923 EIN - Front Pharmacol. 2022 May 19;13:918401. PMID: 35668942 PMC - PMC8863972 OTO - NOTNLM OT - allergic response OT - chronotherapeutic OT - inflammatory cell infiltration OT - inflammatory cytokine OT - paeoniflorin OT - urticaria-like lesion COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/03/01 06:00 MHDA- 2022/03/01 06:01 PMCR- 2022/02/09 CRDT- 2022/02/28 05:33 PHST- 2020/12/09 00:00 [received] PHST- 2021/12/22 00:00 [accepted] PHST- 2022/02/28 05:33 [entrez] PHST- 2022/03/01 06:00 [pubmed] PHST- 2022/03/01 06:01 [medline] PHST- 2022/02/09 00:00 [pmc-release] AID - 639580 [pii] AID - 10.3389/fphar.2021.639580 [doi] PST - epublish SO - Front Pharmacol. 2022 Feb 9;12:639580. doi: 10.3389/fphar.2021.639580. eCollection 2021.