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Schiro G, Liu P, Dodson M, Zhang DD, Ghishan FK, Barberán A, Kiela PR. Interactions between arsenic exposure, high-fat diet and NRF2 shape the complex responses in the murine gut microbiome and hepatic metabolism. FRONTIERS IN MICROBIOMES 2022; 1:1041188. [PMID: 37779901 PMCID: PMC10540274 DOI: 10.3389/frmbi.2022.1041188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
Inorganic arsenic (iAs) exposure has been associated to various detrimental effects such as development of metabolic syndrome and type 2 diabetes via oxidative stress and induced prolonged activation of the NRF2 transcription factor. Such effects can be aggravated by poor dietary habits. The role of gut microbiota in promoting metabolic changes in response to arsenic has yet to be precisely defined. To address the complexity of the interactions between diet, NFE2L2/NRF2, and gut microbiota, we studied the chronic effects of iAs exposure in wild-type (WT) and Nrf2-/- mice fed normal (ND) vs. high-fat diet (HFD), on the gut microbial community in the context of hepatic metabolism. We demonstrate that all treatments and interactions influenced bacteria and metabolic profiles, with dietary differences causing a strong overlap of responses between the datasets. By identifying five metabolites of known microbial origin and following their fate across treatments, we provide examples on how gut microbial products can participate in the development of iAs and HFD-induced metabolic disease. Overall, our results underline the importance of the microbial community in driving gut-liver-cross talk during iAs and HFD exposure.
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Affiliation(s)
- Gabriele Schiro
- Department of Environmental Science, University of Arizona, Tucson, Arizona, 85721 USA
- Department of Pediatrics, University of Arizona, Tucson, Arizona, 85724 USA
| | - Pengfei Liu
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson, AZ, 85721 USA
- National & Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, and International Joint Research Center on Cell Stress and Disease, Diagnosis and Therapy, The Second Affiliated Hospital of Xi’an Jiaotong, University, Xi’an, China
| | - Matthew Dodson
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson, AZ, 85721 USA
| | - Donna D. Zhang
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson, AZ, 85721 USA
| | - Fayez K. Ghishan
- Department of Pediatrics, University of Arizona, Tucson, Arizona, 85724 USA
| | - Albert Barberán
- Department of Environmental Science, University of Arizona, Tucson, Arizona, 85721 USA
| | - Pawel R. Kiela
- Department of Pediatrics, University of Arizona, Tucson, Arizona, 85724 USA
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The protective effect of melatonin on the in vitro development of yak embryos against hydrogen peroxide-induced oxidative injury. ZYGOTE 2019; 27:118-125. [PMID: 31010442 DOI: 10.1017/s0967199418000412] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
SummaryMelatonin plays a critical role in several types of cells as an antioxidant to protect intracellular molecules from oxidative stress. The anti-oxidation effect of melatonin in yak embryos is largely unknown. We report that melatonin can protect the development of yak preimplantation embryos against oxidative stress induced by hydrogen peroxide (H2O2). Therefore, the quality of blastocysts developed from zygotes exposed to H2O2 was promoted. In addition, we observed that melatonin reduced H2O2-induced intracellular reactive oxygen species (ROS) levels and prevented mitochondrial dysfunction in zygotes. These phenomena revealed the effective antioxidant activity of melatonin to prevent oxidative stress in yak embryos. To determine the underlying mechanism, we further demonstrated that melatonin protected preimplantation embryos from oxidative damage by preserving antioxidative enzymes. Collectively, these results confirmed the anti-oxidation effect of melatonin in yak embryos that significantly improved the quantity and quality of blastocysts in the in vitro production of embryos in yaks.
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van der Hooft JJJ, Goldstone RJ, Harris S, Burgess KEV, Smith DGE. Substantial Extracellular Metabolic Differences Found Between Phylogenetically Closely Related Probiotic and Pathogenic Strains of Escherichia coli. Front Microbiol 2019; 10:252. [PMID: 30837975 PMCID: PMC6390828 DOI: 10.3389/fmicb.2019.00252] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 01/30/2019] [Indexed: 12/11/2022] Open
Abstract
Since its first isolation a century ago, the gut inhabitant Escherichia coli strain Nissle 1917 has been shown to have probiotic activities; however, it is yet not fully elucidated which differential factors play key roles in its beneficial interactions with the host. To date, no metabolomics studies have been reported investigating the potential role of small molecules in functional strain differentiation of Nissle from its genetically close neighbors. Here, we present results of liquid chromatography coupled to high-resolution mass spectrometry characterization of extracellular metabolomes of E. coli strains as a proxy of their bioactivity potential. We found that phylogroup B2 strains exported a more diverse arsenal of metabolites than strains of other phylogroups. Zooming into the phylogroup B2 metabolome identified consistent substantial differences between metabolic output of E. coli Nissle and other strains, particularly in metabolites associated to the Argimine biosynthesis pathway. Nissle was found to release higher levels of Ornithine and Citrulline whilst depleting greater amounts of Arginine from the medium. Moreover, a novel Nissle-specific metabolite not reported before in bacteria, 5-(Carbamoylamino)-2-hydroxypentanoic acid (Citrulline/Arginic Acid related) was observed. Finally, Nissle, CFT073 and NCTC12241/ATCC25922 shared the excretion of N5-Acetylornithine, whereas other strains released N2-Acetylornithine or no N-Acetylornithine at all. Thus, we found substantial metabolic differences in phylogenetically very similar E. coli strains, an observation which suggests that it is justified to further investigate roles of small molecules as potential modulators of the gut environment by probiotic, commensal, and pathogenic strains, including E. coli Nissle 1917.
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Affiliation(s)
| | | | - Susan Harris
- Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University, Edinburgh, United Kingdom
| | - Karl E. V. Burgess
- Glasgow Polyomics, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - David G. E. Smith
- Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot-Watt University, Edinburgh, United Kingdom
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Xu SF, Zhang YH, Wang S, Pang ZQ, Fan YG, Li JY, Wang ZY, Guo C. Lactoferrin ameliorates dopaminergic neurodegeneration and motor deficits in MPTP-treated mice. Redox Biol 2018; 21:101090. [PMID: 30593976 PMCID: PMC6307097 DOI: 10.1016/j.redox.2018.101090] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 12/17/2018] [Accepted: 12/19/2018] [Indexed: 02/06/2023] Open
Abstract
Brain iron accumulation is common in patients with Parkinson's disease (PD). Iron chelators have been investigated for their ability to prevent neurodegenerative diseases with features of iron overload. Given the non-trivial side effects of classical iron chelators, lactoferrin (Lf), a multifunctional iron-binding globular glycoprotein, was screened to identify novel neuroprotective pathways against dopaminergic neuronal impairment. We found that Lf substantially ameliorated PD-like motor dysfunction in the subacute 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced mouse model of PD. We further showed that Lf could alleviate MPTP-triggered apoptosis of DA neurons, neuroinflammation, and histological alterations. As expected, we also found that Lf suppressed MPTP-induced excessive iron accumulation and the upregulation of divalent metal transporter (DMT1) and transferrin receptor (TFR), which is the main intracellular iron regulation protein, and subsequently improved the activity of several antioxidant enzymes. We probed further and determined that the neuroprotection provided by Lf was involved in the upregulated levels of brain-derived neurotrophic factor (BDNF), hypoxia-inducible factor 1α (HIF-1α) and its downstream protein, accompanied by the activation of extracellular regulated protein kinases (ERK) and cAMP response element binding protein (CREB), as well as decreased phosphorylation of c-Jun N-terminal kinase (JNK) and mitogen activated protein kinase (MAPK)/P38 kinase in vitro and in vivo. Our findings suggest that Lf may be an alternative safe drug in ameliorating MPTP-induced brain abnormalities and movement disorder.
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Affiliation(s)
- Shuang-Feng Xu
- College of Life and Health Sciences, Northeastern University, No.195, Chuangxin Road, Hunnan District, Shenyang 110169, China
| | - Yan-Hui Zhang
- College of Life and Health Sciences, Northeastern University, No.195, Chuangxin Road, Hunnan District, Shenyang 110169, China
| | - Shan Wang
- College of Life and Health Sciences, Northeastern University, No.195, Chuangxin Road, Hunnan District, Shenyang 110169, China
| | - Zhong-Qiu Pang
- College of Life and Health Sciences, Northeastern University, No.195, Chuangxin Road, Hunnan District, Shenyang 110169, China
| | - Yong-Gang Fan
- College of Life and Health Sciences, Northeastern University, No.195, Chuangxin Road, Hunnan District, Shenyang 110169, China
| | - Jia-Yi Li
- College of Life and Health Sciences, Northeastern University, No.195, Chuangxin Road, Hunnan District, Shenyang 110169, China; Institute of Health Sciences, Key Laboratory of Medical Cell Biology of Ministry of Education, China Medical University, Shenyang 110122, China; Neural Plasticity and Repair Unit, Wallenberg Neuroscience Center, Department of Experimental Medical Science, Lund University, BMC A10, 22184 Lund, Sweden
| | - Zhan-You Wang
- College of Life and Health Sciences, Northeastern University, No.195, Chuangxin Road, Hunnan District, Shenyang 110169, China; Institute of Health Sciences, Key Laboratory of Medical Cell Biology of Ministry of Education, China Medical University, Shenyang 110122, China.
| | - Chuang Guo
- College of Life and Health Sciences, Northeastern University, No.195, Chuangxin Road, Hunnan District, Shenyang 110169, China.
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