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Peng X, Fan H, Liu J, Jiang X, Liu C, Yang Y, Zhai S. Embryo injected with Ochratoxin A induced jejunum injury in ducklings by activating the TLR4 signaling pathway: Involvement of intestinal microbiota. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 281:116666. [PMID: 38945100 DOI: 10.1016/j.ecoenv.2024.116666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 06/20/2024] [Accepted: 06/28/2024] [Indexed: 07/02/2024]
Abstract
Ochratoxin A (OTA) is a common mycotoxin that causes intestinal injury in humans and various animal species. OTA may lead to intestinal injury in offspring due to the maternal effect. The aim of this study was to investigate the mechanism of embryo injected with OTA induced jejunum injury in ducklings. The results showed that OTA disrupted the jejunum tight junctions in hatching ducklings, and promoted the secretion of inflammatory cytokines. And this inflammatory response was caused by the activation of the TLR4 signaling pathway. Moreover, embryo injected with OTA could cause damage to the intestinal barrier in 21-day-old ducks, characterized by shortened villi, crypt hyperplasia, disrupted intestinal tight junctions, increased level of LPS in the jejunum, activation of the TLR4 signaling pathway, and increased levels of pro-inflammatory cytokines. Meanwhile, OTA induced oxidative stress in the jejunum. And dysbiosis of gut microbiota was mainly characterized by an increased the relative abundance of Bacteroides, Megamonas, Fournierella, and decreased the relative abundance of Alistipes and Weissella. Interestingly, embryo injected with OTA did not induce these changes in the jejunum of antibiotics-treated 21-day-old ducks. In conclusion, embryo injected with OTA induced jejunum injury in ducklings by activating the TLR4 signaling pathway, which involvement of intestinal microbiota.
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Affiliation(s)
- Xin Peng
- College of Animal Science and Technology, Yangtze University, Jingzhou 434023, China
| | - Hailu Fan
- College of Animal Science and Technology, Yangtze University, Jingzhou 434023, China
| | - Jinhui Liu
- College of Animal Science and Technology, Yangtze University, Jingzhou 434023, China
| | - Xiayu Jiang
- College of Animal Science and Technology, Yangtze University, Jingzhou 434023, China
| | - Cheng Liu
- College of Animal Science and Technology, Yangtze University, Jingzhou 434023, China
| | - Ye Yang
- College of Animal Science and Technology, Yangtze University, Jingzhou 434023, China
| | - Shuangshuang Zhai
- College of Animal Science and Technology, Yangtze University, Jingzhou 434023, China.
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Zhang L, Liu Y, Zhang Q, Yao W, Zhao Z, Wang X, Bao Y, Shi W. Salvia miltiorrhiza polysaccharide mitigates AFB1-induced liver injury in rabbits. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 276:116344. [PMID: 38636259 DOI: 10.1016/j.ecoenv.2024.116344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 04/10/2024] [Accepted: 04/15/2024] [Indexed: 04/20/2024]
Abstract
Aflatoxin B1 (AFB1) is one of the common dietary contaminants worldwide, which can harm the liver of humans and animals. Salvia miltiorrhiza polysaccharide (SMP) is a natural plant-derived polysaccharide with numerous pharmacological activities, including hepatoprotective properties. The purpose of this study is to explore the intervention effect of SMP on AFB1-induced liver injury and its underlying mechanisms in rabbits. The rabbits were administered AFB1 (25 μg/kg/feed) and or treatment with SMP (300, 600, 900 mg/kg/feed) for 42 days. The results showed that SMP effectively alleviated the negative impact of AFB1 on rabbits' productivity by increasing average daily weight gain (ADG) and feed conversion rate (FCR). SMP reduced aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) levels in serum, ameliorating AFB1-induced hepatic pathological changes. Additionally, SMP enhanced superoxide dismutase (SOD), catalase (CAT) and glutathione (GSH) activity, and inhibited reactive oxygen species (ROS), malondialdehyde (MDA), 4-Hydroxynonenal (4-HNE), interleukin-1β (IL-1β), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) expression, thus mitigating AFB1-induced oxidative stress and inflammatory responses. Moreover, SMP upregulated the expression of nuclear factor E2 related factor 2 (Nrf2), heme oxygenase 1 (HO-1), NADPH quinone oxidoreductase 1 (NQO1) and B-cell lymphoma 2 (Bcl2) while downregulating kelch like ECH associated protein 1 (Keap1), cytochrome c (cyt.c), caspase9, caspase3, and Bcl-2-associated X protein (Bax) expression, thereby inhibiting AFB1-induced hepatocyte apoptosis. Consequently, our findings conclude that SMP can mitigate AFB1-induced liver damage by activating the Nrf2/HO-1 pathway and inhibiting mitochondria-dependent apoptotic pathway in rabbits.
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Affiliation(s)
- Lu Zhang
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China
| | - Ying Liu
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China
| | - Qiongyi Zhang
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China
| | - Weiyu Yao
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China
| | - Zenghui Zhao
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China
| | - Xiao Wang
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China
| | - Yongzhan Bao
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China; Hebei Provincial Veterinary Biotechnology Innovation Center, Baoding 071001, China
| | - Wanyu Shi
- College of Traditional Chinese Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China; Hebei Provincial Veterinary Biotechnology Innovation Center, Baoding 071001, China.
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Li S, Wang Y, Xu A, Zhao B, Xia Y, He Y, Xue H, Li S. Dietary selenomethionine reduced oxidative stress by resisting METTL3-mediated m 6A methylation level of Nrf2 to ameliorate LPS-induced liver necroptosis in laying hens. J Nutr Biochem 2024; 125:109563. [PMID: 38176622 DOI: 10.1016/j.jnutbio.2023.109563] [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: 10/22/2023] [Revised: 11/18/2023] [Accepted: 12/31/2023] [Indexed: 01/06/2024]
Abstract
Selenomethionine (SeMet) as the main form of daily dietary selenium, occupies essential roles in providing antioxidant and anti-inflammatory properties, which alleviates inflammatory liver damage. N6-methyladenosine (m6A) is one of the most prevalent and abundant internal transcriptional modifications that regulate gene expression. To investigate the protective mechanism of SeMet on liver injury and the regulatory effect of m6A methylation modification, we established the model by supplementing dietary SeMet, and LPS as stimulus in laying hens. LMH cells were intervened with SeMet (0.075 µM) and/or LPS (60 µg/mL). Subsequently, histopathology and ultrastructure of liver were observed. Western Blot, qRT-PCR, colorimetry, MeRIP-qPCR, fluorescent probe staining and AO/EB were used to detect total m6A methylation level, m6A methylation level of Nrf2, ROS, inflammatory and necroptosis factors. Studies showed that SeMet suppressed LPS-induced upregulation of total m6A methylation levels and METTL3 expression. Interestingly, SeMet reduced the m6A methylation level of Nrf2, activated antioxidant pathways and alleviated oxidative stress. LMH cells were transfected with 50 µm siMETTL3. SeMet/SiMETTL3 reversed the LPS-induced reduction in Nrf2 mRNA stability, slowed down its degradation rate. Moreover, LPS induced oxidative stress, led to necroptosis and activated NF-κB to promote the expression of inflammatory factors. SeMet/SiMETTL3 alleviated LPS-induced necroptosis and inflammation. Altogether, SeMet enhanced antioxidant and anti-inflammatory capacity by reducing METTL3-mediated m6A methylation levels of Nrf2, ultimately alleviating liver damage. Our findings provided new insights and therapeutic target for the practical application of dietary SeMet in the treatment and prevention of liver inflammation, and supplied a reference for comparative medicine.
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Affiliation(s)
- Shanshan Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P.R. China
| | - Yixuan Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P.R. China
| | - Anqi Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P.R. China
| | - Bing Zhao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P.R. China
| | - Yu Xia
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P.R. China
| | - Yujiao He
- Cocodala Animal Husbandry and Veterinary Workstation of the Fourth Division of Xinjiang Construction Corps, Cocodala, 831304, P.R. China
| | - Hua Xue
- National Selenium-rich Product Quality Supervision and Inspection Center, Enshi, 445099, P.R. China
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, P.R. China.
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Liu Y, Wang J, Chang Z, Li S, Zhang Z, Liu S, Wang S, Wei L, Lv Q, Ding K, Zhang Z. SeMet alleviates AFB 1-induced oxidative stress and apoptosis in rabbit kidney by regulating Nrf2//Keap1/NQO1 and PI3K/AKT signaling pathways. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 269:115742. [PMID: 38039849 DOI: 10.1016/j.ecoenv.2023.115742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 11/08/2023] [Accepted: 11/24/2023] [Indexed: 12/03/2023]
Abstract
The purpose of this study was to explore the protective effect of SeMet on renal injury induced by AFB1 in rabbits and its molecular mechanism. Forty rabbits of 35 days old were randomly divided into control group, AFB1 group (0.3 mg AFB1/kg b.w), 0.2 mg/kg Se + AFB1 group (0.3 mg AFB1/kg b.w + 0.2 mg SeMet/kg feed) and 0.4 mg/kg Se + AFB1 group (0.3 mg AFB1/kg b.w + 0.4 mg SeMet/kg feed). The SeMet treatment group was fed different doses of SeMet diets every day for 21 days. On the 17-21 day, the AFB1 treatment group, the 0.2 mg/kg Se + AFB1 group and the 0.4 mg/kg Se + AFB1 group were administered 0.3 mg AFB1 /kg b.w by gavage (dissolved in 0.5 ml olive oil) respectively. The results showed that AFB1 poisoning resulted in the changes of renal structure, the increase of renal coefficient and serum biochemical indexes, the ascent of ROS and MDA levels, the descent of antioxidant enzyme activity, and the significant down-regulation of Nrf2, HO-1 and NQO1. Besides, AFB1 poisoning increased the number of renal apoptotic cells, rised the levels of PTEN, Bax, Caspase-3 and Caspase-9, and decreased the levels of PI3K, AKT, p-AKT and Bcl-2. In summary, SeMet was added to alleviate the oxidative stress injury and apoptosis of kidney induced by AFB1, and the effect of 0.2 mg/kg Se + AFB1 is better than 0.4 mg/kg Se + AFB1.
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Affiliation(s)
- Yumei Liu
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471000, Henan, China
| | - Jianing Wang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471000, Henan, China
| | - Zhaoyang Chang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471000, Henan, China
| | | | - Zhikai Zhang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471000, Henan, China
| | - Shiyang Liu
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471000, Henan, China
| | - Shuaishuai Wang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471000, Henan, China
| | - Lan Wei
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471000, Henan, China
| | - Qiongxia Lv
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471000, Henan, China
| | - Ke Ding
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471000, Henan, China
| | - Ziqiang Zhang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471000, Henan, China.
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Fang M, Hu W, Liu B. Effects of nano-selenium on cecum microbial community and metabolomics in chickens challenged with Ochratoxin A. Front Vet Sci 2023; 10:1228360. [PMID: 37732141 PMCID: PMC10507861 DOI: 10.3389/fvets.2023.1228360] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 08/22/2023] [Indexed: 09/22/2023] Open
Abstract
Introduction Ochratoxin A (OTA) is a widely distributed mycotoxin. Nano-selenium (Nano-Se) is an emerging form of selenium known for its superior bioavailability, remarkable catalytic efficiency, and robust adsorbing capacity. Despite these characteristics, its impact on the microbial community and metabolomics in the cecum of chickens exposed to OTA has been infrequently investigated. This research examined the microbiota and metabolomic alterations linked to OTA in chickens, with or without Nano-Se present. Methods A cohort of 80 healthy chickens at the age of 1 day was randomly distributed into four groups of equal numbers, namely the Se cohort (1 mg/kg Nano-Se), the OTA cohort (50 μg/kg OTA), the OTA-Se cohort (50 μg/kg OTA + 1 mg/kg Nano-Se), and the control group. Each chicken group's caecal microbiome and metabolome were characterized using 16S rRNA sequencing and Liquid chromatography coupled with mass spectrometry (LC-MS) analyses. Results and discussion Our results showed that the on day 21, the final body weight was significantly reduced in response to OTA treatments (p < 0.05), the average daily gain in the OTA group was found to be inferior to the other groups (p < 0.01). In addition, Nano-Se supplementation could reduce the jejunum and liver pathological injuries caused by OTA exposure. The 16S rRNA sequencing suggest that Nano-Se supplementation in OTA-exposed chickens mitigated gut microbiota imbalances by promoting beneficial microbiota and suppressing detrimental bacteria. Moreover, untargeted metabolomics revealed a significant difference in caecal metabolites by Nano-Se pretreatment. Collectively, the dataset outcomes highlighted that Nano-Se augmentation regulates intestinal microbiota and associated metabolite profiles, thus influencing critical metabolic pathways, and points to a possible food-additive product.
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Affiliation(s)
- Manxin Fang
- College of Life Science and Resources and Environment, Yichun University, Yichun, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Yichun, China
| | - Wei Hu
- College of Life Science and Resources and Environment, Yichun University, Yichun, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Yichun, China
| | - Ben Liu
- College of Life Science and Resources and Environment, Yichun University, Yichun, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Yichun, China
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