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Diao W, Yin M, Qi Y, Fu Y, Gu L, Lin J, Zhang L, Jiang N, Wang Q, Wang Y, Yi W, Chi M, Li C, Zhao G. Resveratrol has neuroprotective effects and plays an anti-inflammatory role through Dectin-1/p38 pathway in Aspergillus fumigatus keratitis. Cytokine 2024; 179:156626. [PMID: 38678810 DOI: 10.1016/j.cyto.2024.156626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/14/2024] [Accepted: 04/22/2024] [Indexed: 05/01/2024]
Abstract
PURPOSE To determine the antifungal, anti-inflammatory and neuroprotective effects of resveratrol (RES) in Aspergillus fumigatus (A. fumigatus) keratitis. METHODS Cytotoxicity assay and Draize eye assay were performed to assess the toxicity of RES. The antifungal effect of RES was assessed by minimal inhibitory concentration, scanning or transmission electron microscopy, propidium iodide uptake assay, and Calcofluor white staining. Phosphorylation of p38 MAPK, mRNA and protein levels of Dectin-1 and related inflammatory factors were measured by qRT-PCR, ELISA and Western blot in vitro and in vivo. Clinical score, HE staining, plate count, and myeloperoxidase test were used to observe the progress of fungal keratitis. IF staining, qRT-PCR, and the Von Frey test were selected to assess the neuroprotective effects of RES. RESULTS RES suppressed A. fumigatus hyphae growth and altered hyphae morphology in vitro. RES decreased the expression of Dectin-1, IL-1β and TNF-α, as well as p38 MAPK phosphorylation expression, and also decreased clinical scores, reduced inflammatory cell infiltration and neutrophil activity, and decreased fungal load. RES also protected corneal basal nerve fibers, down-regulated mechanosensitivity thresholds, and increased the mRNA levels of CGRP and TRPV-1.. CONCLUSION These evidences revealed that RES could exert antifungal effects on A. fumigatus and ameliorate FK through suppressing the Dectin-1/p38 MAPK pathway to down-regulate IL-1β, IL-6, etc. expression and play protective effect on corneal nerves.
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Affiliation(s)
- Weilin Diao
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Min Yin
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yinghe Qi
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yudong Fu
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Lingwen Gu
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Jing Lin
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Lina Zhang
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Nan Jiang
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Qian Wang
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yuwei Wang
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Wendan Yi
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Menghui Chi
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Cui Li
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China.
| | - Guiqiu Zhao
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China.
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Mao H, Liu Y, Lv Q, Li C, Yang Y, Wu F, Xu N, Jin X. The effect of β-Glucan induced intestinal trained immunity against Trichinella spiralis infection. Vet Parasitol 2024:110238. [PMID: 38944590 DOI: 10.1016/j.vetpar.2024.110238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 07/01/2024]
Abstract
Parasitic helminth Trichinella spiralis (Ts) induce mixed Th1/Th2 response with predominant type 2 immune responses, with protective immunity mediated by interleukin (IL)-4, IL-5, and IL-13. β-Glucan (BG) has been shown to have the ability to induce trained immunity, confers non-specific protection from secondary infections. However, whether BG-induced trained immunity played a role in protective type 2 immunity against Ts infection is unclear. In this study, BG was administered five days before Ts infection to induce trained immunity. Our findings demonstrate that BG pretreatment effectively reduced the number of T. spiralis adults and muscle larvae, whereas inhibition of trained immunity abolished the effect of BG. Additionally, we observed a significant increase in goblet cells and mucus production as evidenced by Alcian blue periodic acid-Schiff staining. Furthermore, quantitative real-time PCR analysis revealed a significant upregulation of IL-4, IL-5, and IL-13 expression in response to BG. Conversely, the inhibitor of trained immunity reversed these effects, suggesting that BG-induced trained immunity confers strong protection against Ts infection. In conclusion, these findings suggest that BG-induced trained immunity may play a role in protection against infections caused by other helminths.
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Affiliation(s)
- Hanhai Mao
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yi Liu
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Qingbo Lv
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Chengyao Li
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yaming Yang
- Department of Helminth, Yunnan Institute of Parasitic Diseases, Puer, China
| | - Fangwei Wu
- Department of Helminth, Yunnan Institute of Parasitic Diseases, Puer, China
| | - Ning Xu
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China.
| | - Xuemin Jin
- State Key Laboratory for Zoonotic Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, China.
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Jing R, Fu M, Huang Y, Zhang K, Ye J, Gong F, Jihea Ali Naji Nasser AB, Xu X, Xiao J, Yu G, Lin S, Zhao W, Xu N, Li X, Li Z, Gao S. Oat β-glucan repairs the epidermal barrier by upregulating the levels of epidermal differentiation, cell-cell junctions and lipids via Dectin-1. Br J Pharmacol 2024; 181:1596-1613. [PMID: 38124222 DOI: 10.1111/bph.16306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 11/07/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND AND PURPOSE Oat β-glucan could ameliorate epidermal hyperplasia and accelerate epidermal barrier repair. Dectin-1 is one of the receptors of β-glucan and many biological functions of β-glucan are mediated by Dectin-1. Dectin-1 promotes wound healing through regulating the proliferation and migration of skin cells. Thus, this study aimed to investigate the role of oat β-glucan and Dectin-1 in epidermal barrier repair. EXPERIMENTAL APPROACH To investigate the role of Dectin-1 in the epidermal barrier, indicators associated with the recovery of a damaged epidermal barrier, including histopathological changes, keratinization, proliferation, apoptosis, differentiation, cell-cell junctions and lipid content were compared between WT and Dectin-1-/- mice. Further, the effect of oat β-glucan on the disruption of the epidermal barrier was also compared between WT and Dectin-1-/- mice. KEY RESULTS Dectin-1 deficiency resulted in delayed recovery and marked keratinization, as well as abnormal levels of keratinocyte differentiation, cell-cell junctions and lipid synthesis during the restoration of the epidermal barrier. Oat β-glucan significantly reduces epidermal hyperplasia, promotes epidermal differentiation, increases cell-cell junction expression, promotes lipid synthesis and ultimately accelerates the recovery of damaged epidermal barriers via Dectin-1. Oat β-glucan could promote CaS receptor expression and activate the PPAR-γ signalling pathway via Dectin-1. CONCLUSION AND IMPLICATIONS Oat β-glucan promote the recovery of damaged epidermal barriers through promoting epidermal differentiation, increasing the expression of cell-cell junctions and lipid synthesis through Dectin-1. Dectin-1 deficiency delay the recovery of epidermal barriers, which indicated that Dectin-1 may be a potential target in epidermal barrier repair.
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Affiliation(s)
- Rongrong Jing
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Mengli Fu
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Yuhan Huang
- Department of Dermatology and Venereology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Kaini Zhang
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Jiabin Ye
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Fanghua Gong
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | | | - Xiashun Xu
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Jiali Xiao
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Guangdong Yu
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Shisheng Lin
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Wengang Zhao
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Nuo Xu
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, China
| | - Xiaokun Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Zhiming Li
- Department of Dermatology and Venereology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Shuang Gao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
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Zhang Q, Zhao W, Hou Y, Song X, Yu H, Tan J, Zhou Y, Zhang HT. β-Glucan attenuates cognitive impairment of APP/PS1 mice via regulating intestinal flora and its metabolites. CNS Neurosci Ther 2023; 29:1690-1704. [PMID: 36890624 PMCID: PMC10173722 DOI: 10.1111/cns.14132] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 12/01/2022] [Accepted: 12/17/2022] [Indexed: 03/10/2023] Open
Abstract
BACKGROUND The intestinal flora has been shown to be involved in the progression of Alzheimer's disease (AD) and can be improved by β-glucan, a polysaccharide derived from Saccharomyces cerevisiae, which affects cognitive function through the intestinal flora. However, it is not known if this effect of β-glucan is involved in AD. METHOD This study used behavioral testing to measure cognitive function. After that, high-throughput 16 S rRNA gene sequencing and GC-MS were used to analyze the intestinal microbiota and metabolite SCFAs of AD model mice, and further explore the relationship between intestinal flora and neuroinflammation. Finally, the expressions of inflammatory factors in the mouse brain were detected by Western blot and Elisa methods. RESULTS We found that appropriate supplementation of β-glucan during the progression of AD can improve cognitive impairment and reduce A β plaque deposition. In addition, supplementation of β-glucan can also promote changes in the composition of the intestinal flora, thereby changing the flora metabolites in the intestinal content and reduce the activation of inflammatory factors and microglia in the cerebral cortex and hippocampus through the brain-gut axis. While reducing the expression of inflammatory factors in the hippocampus and cerebral cortex, thereby controlling neuroinflammation. CONCLUSION The imbalance of the gut microbiota and metabolites plays a role in the progression of AD; β-glucan blocks the development of AD by improving the gut microbiota and its metabolites and reducing neuroinflammation. β-Glucan is a potential strategy for the treatment of AD by reshaping the gut microbiota and improving its metabolites.
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Affiliation(s)
- Qiwei Zhang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai-an City, China.,Institute of Pharmacology, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
| | - Wei Zhao
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao, China
| | - Yue Hou
- Institute of Pharmacology, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
| | - Xinxin Song
- Institute of Pharmacology, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
| | - Haiyang Yu
- Institute of Pharmacology, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
| | - Jinghe Tan
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai-an City, China
| | - Yanmeng Zhou
- Institute of Pharmacology, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China
| | - Han-Ting Zhang
- Institute of Pharmacology, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian, China.,Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao, China
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Jia Y, Li C, Yin M, Lin J, Zhang L, Li N, Jiang N, Xu Q, Wang Q, Gu L, Yu B, Zhao G. Kaempferol ameliorate the prognosis of Aspergillus fumigatus keratitis by reducing fungal load and inhibiting the Dectin-1 and p38 MAPK pathway. Exp Eye Res 2022; 216:108960. [DOI: 10.1016/j.exer.2022.108960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 11/04/2022]
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Kim IS, Hwang CW, Yang WS, Kim CH. Multiple Antioxidative and Bioactive Molecules of Oats ( Avena sativa L.) in Human Health. Antioxidants (Basel) 2021; 10:antiox10091454. [PMID: 34573086 PMCID: PMC8471765 DOI: 10.3390/antiox10091454] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 02/06/2023] Open
Abstract
Oats (Avena sativa L.) are rich in protein, fiber, calcium, vitamins (B, C, E, and K), amino acids, and antioxidants (beta-carotene, polyphenols, chlorophyll, and flavonoids). β-glucan and avenanthramides improve the immune system, eliminate harmful substances from the body, reduce blood cholesterol, and help with dietary weight loss by enhancing the lipid profile and breaking down fat in the body. β-glucan regulates insulin secretion, preventing diabetes. Progladins also lower cholesterol levels, suppress the accumulation of triglycerides, reduce blood sugar levels, suppress inflammation, and improve skin health. Saponin-based avanacosidase and functional substances of flavone glycoside improve the immune function, control inflammation, and prevent infiltration in the skin. Moreover, lignin and phytoestrogen prevent hormone-related cancer and improve the quality of life of postmenopausal women. Sprouted oats are rich in saponarin in detoxifying the liver. The literatures have been reviewed and the recent concepts and prospects have been summarized with figures and tables. This review discusses recent trends in research on the functionality of oats rather than their nutritional value with individual immunity for self-medication. The oat and its acting components have been revisited for the future prospect and development of human healthy and functional sources.
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Affiliation(s)
- Il-Sup Kim
- Advanced Bio-Resource Research Center, Kyungpook National University, Daegu 41566, Korea;
| | - Cher-Won Hwang
- Global Leadership School, Handong Global University, Pohang 37554, Gyeongsangbuk-Do, Korea
- Correspondence: (C.-W.H.); (W.-S.Y.); (C.-H.K.)
| | - Woong-Suk Yang
- Nodaji Co., Ltd., Pohang 37927, Gyeongsangbuk-Do, Korea
- Correspondence: (C.-W.H.); (W.-S.Y.); (C.-H.K.)
| | - Cheorl-Ho Kim
- Department of Biological Sciences, SungKyunKwan University, Suwon 16419, Gyunggi-Do, Korea
- Samsung Advanced Institute of Health Science and Technology (SAIHST), Sungkyunkwan University, Seoul 06351, Korea
- Correspondence: (C.-W.H.); (W.-S.Y.); (C.-H.K.)
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