PMID- 34240224 OWN - NLM STAT- MEDLINE DCOM- 20210913 LR - 20240226 IS - 1791-3004 (Electronic) IS - 1791-2997 (Print) IS - 1791-2997 (Linking) VI - 23 IP - 5 DP - 2021 May TI - Therapeutic effects of quinine in a mouse model of atopic dermatitis. LID - 313 [pii] LID - 10.3892/mmr.2021.11952 [doi] AB - Atopic dermatitis (AD) is a chronic inflammatory skin disease that seriously affects quality of life. Quinine is a bitter taste receptor agonist that exhibits antimalarial effects. The aim of the present study was to examine the therapeutic effects of quinine in AD‑like mice. AD was induced with 2,4‑dinitrochlorobenzene, and the mice were treated with 10 mg/kg quinine for 1, 4 and 7 days. A total of 60 BALB/c mice were divided into the following groups: Healthy, AD‑like, AD‑like + quinine and healthy + quinine, with 1, 4 and 7 days groups for each treatment. Blood was extracted from all mice and ELISA was performed to detect immunoglobulin E (IgE) levels. H&E‑stained tissue sections were prepared from skin lesions on the backs of the mice and pathological changes were observed. Cytokines were detected via ELISA, and the filaggrin (FLG) and kallikrein‑7 (KLK7) proteins were detected via western blotting and immunohistochemistry. IKKalpha and NF‑kappaB mRNA were analyzed via reverse transcription‑quantitative PCR. Quinine ameliorated skin damage in the AD‑like mice, reduced IgE expression in the blood, inhibited expression of IKKalpha and NF‑kappaB, reduced cytokine secretion, reduced KLK7 expression, reduced scratching frequency, increased FLG expression and repaired the skin barrier. These results suggested that quinine exhibited therapeutic effects in AD‑like mice. FAU - Zhang, Qian AU - Zhang Q AD - Department of Dermatology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, Guangdong 518060, P.R. China. FAU - Jiang, Hongjing AU - Jiang H AD - Shenzhen University Health Science Center, Shenzhen, Guangdong 518060, P.R. China. FAU - Liu, Miao AU - Liu M AD - School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xian, Shaanxi 710021, P.R. China. FAU - Li, Xinchen AU - Li X AD - School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xian, Shaanxi 710021, P.R. China. FAU - Zhou, Murong AU - Zhou M AD - College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong 518060, P.R. China. FAU - Lyu, Yansi AU - Lyu Y AD - Department of Dermatology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, Guangdong 518060, P.R. China. FAU - Huang, Jingkai AU - Huang J AD - Department of Dermatology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, Guangdong 518060, P.R. China. FAU - Chen, Si AU - Chen S AD - Shenzhen University Health Science Center, Shenzhen, Guangdong 518060, P.R. China. FAU - Wang, Li AU - Wang L AD - Department of Dermatology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, Guangdong 518060, P.R. China. LA - eng PT - Journal Article DEP - 20210709 PL - Greece TA - Mol Med Rep JT - Molecular medicine reports JID - 101475259 RN - 0 (Cytokines) RN - 0 (Dinitrochlorobenzene) RN - 0 (NF-kappa B) RN - 139874-52-5 (NF-KappaB Inhibitor alpha) RN - 37341-29-0 (Immunoglobulin E) RN - A7V27PHC7A (Quinine) RN - EC 2.7.10.1 (Fgfr1 protein, mouse) RN - EC 2.7.10.1 (Receptor, Fibroblast Growth Factor, Type 1) RN - EC 2.7.11.10 (Chuk protein, mouse) RN - EC 2.7.11.10 (I-kappa B Kinase) RN - EC 3.4.21.- (Kallikreins) RN - EC 3.4.21.- (Klk7 protein, mouse) SB - IM MH - Animals MH - Cytokines/metabolism MH - Dermatitis, Atopic/chemically induced/*drug therapy/metabolism/pathology MH - Dinitrochlorobenzene/toxicity MH - Disease Models, Animal MH - I-kappa B Kinase/genetics/metabolism MH - Immunoglobulin E/blood MH - Kallikreins/genetics/metabolism MH - Male MH - Mice, Inbred BALB C MH - NF-KappaB Inhibitor alpha/genetics/metabolism MH - NF-kappa B/genetics/metabolism MH - Quinine/*pharmacology/*therapeutic use MH - Receptor, Fibroblast Growth Factor, Type 1/genetics/metabolism MH - Signal Transduction/drug effects MH - Skin/drug effects/pathology MH - Mice PMC - PMC7974254 OTO - NOTNLM OT - NF‑kappaB signaling pathway OT - atopic dermatitis OT - quinine COIS- The authors declare that they have no competing interests. EDAT- 2021/07/10 06:00 MHDA- 2021/09/14 06:00 PMCR- 2021/03/02 CRDT- 2021/07/09 07:10 PHST- 2020/07/06 00:00 [received] PHST- 2021/01/21 00:00 [accepted] PHST- 2021/07/09 07:10 [entrez] PHST- 2021/07/10 06:00 [pubmed] PHST- 2021/09/14 06:00 [medline] PHST- 2021/03/02 00:00 [pmc-release] AID - 313 [pii] AID - MMR-0-0-11952 [pii] AID - 10.3892/mmr.2021.11952 [doi] PST - ppublish SO - Mol Med Rep. 2021 May;23(5):313. doi: 10.3892/mmr.2021.11952. Epub 2021 Jul 9.