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Taghizadeh Ghassab F, Shamlou Mahmoudi F, Taheri Tinjani R, Emami Meibodi A, Zali MR, Yadegar A. Probiotics and the microbiota-gut-brain axis in neurodegeneration: Beneficial effects and mechanistic insights. Life Sci 2024; 350:122748. [PMID: 38843992 DOI: 10.1016/j.lfs.2024.122748] [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: 12/05/2023] [Revised: 03/21/2024] [Accepted: 05/23/2024] [Indexed: 06/10/2024]
Abstract
Neurodegenerative diseases (NDs) are a group of heterogeneous disorders with a high socioeconomic burden. Although pharmacotherapy is currently the principal therapeutic approach for the management of NDs, mounting evidence supports the notion that the protracted application of available drugs would abate their dopaminergic outcomes in the long run. The therapeutic application of microbiome-based modalities has received escalating attention in biomedical works. In-depth investigations of the bidirectional communication between the microbiome in the gut and the brain offer a multitude of targets for the treatment of NDs or maximizing the patient's quality of life. Probiotic administration is a well-known microbial-oriented approach to modulate the gut microbiota and potentially influence the process of neurodegeneration. Of note, there is a strong need for further investigation to map out the mechanistic prospects for the gut-brain axis and the clinical efficacy of probiotics. In this review, we discuss the importance of microbiome modulation and hemostasis via probiotics, prebiotics, postbiotics and synbiotics in ameliorating pathological neurodegenerative events. Also, we meticulously describe the underlying mechanism of action of probiotics and their metabolites on the gut-brain axis in different NDs. We suppose that the present work will provide a functional direction for the use of probiotic-based modalities in promoting current practical treatments for the management of neurodegenerative-related diseases.
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Affiliation(s)
- Fatemeh Taghizadeh Ghassab
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Shamlou Mahmoudi
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reyhaneh Taheri Tinjani
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Armitasadat Emami Meibodi
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Yadegar
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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2
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Li L, Yang C, Jia M, Wang Y, Zhao Y, Li Q, Gong J, He Y, Xu K, Liu X, Chen X, Hu J, Liu Z. Synbiotic therapy with Clostridium sporogenes and xylan promotes gut-derived indole-3-propionic acid and improves cognitive impairments in an Alzheimer's disease mouse model. Food Funct 2024. [PMID: 38967039 DOI: 10.1039/d4fo00886c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2024]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder characterized primarily by cognitive impairment. Recent investigations have highlighted the potential of nutritional interventions that target the gut-brain axis, such as probiotics and prebiotics, in forestalling the onset of AD. In this study, whole-genome sequencing was employed to identify xylan as the optimal carbon source for the tryptophan metabolism regulating probiotic Clostridium sporogenes (C. sporogenes). Subsequent in vivo studies demonstrated that administration of a synbiotic formulation comprising C. sporogenes (1 × 1010 CFU per day) and xylan (1%, w/w) over a duration of 30 days markedly enhanced cognitive performance and spatial memory faculties in the 5xFAD transgenic AD mouse model. The synbiotic treatment significantly reduced amyloid-β (Aβ) accumulation in the cortex and hippocampus of the brain. Importantly, synbiotic therapy substantially restored the synaptic ultrastructure in AD mice and suppressed neuroinflammatory responses. Moreover, the intervention escalated levels of the microbial metabolite indole-3-propionic acid (IPA) and augmented the relative prevalence of IPA-synthesizing bacteria, Lachnospira and Clostridium, while reducing the dominant bacteria in AD, such as Aquabacterium, Corynebacterium, and Romboutsia. Notably, synbiotic treatment also prevented the disruption of gut barrier integrity. Correlation analysis indicated a strong positive association between gut microbiota-generated IPA levels and behavioral changes. In conclusion, this study demonstrates that synbiotic supplementation significantly improves cognitive and intellectual deficits in 5xFAD mice, which could be partly attributed to enhanced IPA production by gut microbiota. These findings provide a theoretical basis for considering synbiotic therapy as a novel microbiota-targeted approach for the treatment of metabolic and neurodegenerative diseases.
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Affiliation(s)
- Ling Li
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Cong Yang
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Mengzhen Jia
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yuhao Wang
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yu Zhao
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qingyuan Li
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jun Gong
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ying He
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Kun Xu
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - Xuebo Liu
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xuhui Chen
- Peking University Shenzhen Hospital, Shenzhen, Guangdong, 518004, China
| | - Jun Hu
- Peking University Shenzhen Hospital, Shenzhen, Guangdong, 518004, China
| | - Zhigang Liu
- Laboratory of Functional Chemistry and Nutrition of Food, College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
- Northwest A&F University Shenzhen Research Institute, Shenzhen, Guangdong, 518000, China
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3
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Wang Q, Lv H, Ainiwan M, Yesitayi G, Abudesimu A, Siti D, Aizitiaili A, Ma X. Untargeted metabolomics identifies indole-3-propionic acid to relieve Ang II-induced endothelial dysfunction in aortic dissection. Mol Cell Biochem 2024; 479:1767-1786. [PMID: 38485805 DOI: 10.1007/s11010-024-04961-x] [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: 11/21/2023] [Accepted: 02/07/2024] [Indexed: 07/18/2024]
Abstract
Indole-3-propionic acid (IPA), a gut microbiota-derived metabolite of tryptophan, has been proven to fulfill an essential function in cardiovascular disease (CVD) and nerve regeneration disease. However, the role of IPA in aortic dissection (AD) has not been revealed. We aimed to investigate the role of IPA in the pathogenesis of AD and the underlying mechanisms of IPA in endothelial dysfunction. Untargeted metabolomics has been employed to screen the plasma metabolic profile of AD patients in comparison with healthy individuals. Network pharmacology provides insights into the potential molecular mechanisms underlying IPA. 3-aminopropionitrile fumarate (BAPN) and angiotensin II (Ang II) were administered to induce AD in mice, while human umbilical vein endothelial cells (HUVECs) were employed for in vitro validation of the signaling pathways predicted by network pharmacology. A total of 224 potentially differential plasma metabolites were identified in the AD patients, with 110 up-regulated metabolites and 114 down-regulated metabolites. IPA was the most significantly decreased metabolite involved in tryptophan metabolism. Bcl2, caspase3, and AKT1 were predicted as the target genes of IPA by network pharmacology and molecular docking. IPA suppressed Ang II-induced apoptosis, intracellular ROS generation, inflammation, and endothelial tight junction (TJ) loss. Animal experiments demonstrated that administration of IPA alleviated the occurrence and severity of AD in mice. Taken together, we identified a previously unexplored association between tryptophan metabolite IPA and AD, providing a novel perspective on the underlying mechanism through which IPA mitigates endothelial dysfunction to protect against AD.
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Affiliation(s)
- Qi Wang
- Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Medical University, Ürümqi, China
| | - Hui Lv
- Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Medical University, Ürümqi, China
| | - Mierxiati Ainiwan
- Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Medical University, Ürümqi, China
| | - Gulinazi Yesitayi
- Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Medical University, Ürümqi, China
| | - Asiya Abudesimu
- Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Medical University, Ürümqi, China
| | - Dilixiati Siti
- Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Medical University, Ürümqi, China
| | - Aliya Aizitiaili
- Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Medical University, Ürümqi, China
| | - Xiang Ma
- Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Medical University, Ürümqi, China.
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Department of Cardiology, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi, China.
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Sathyasaikumar KV, Blanco-Ayala T, Zheng Y, Schwieler L, Erhardt S, Tufvesson-Alm M, Poeggeler B, Schwarcz R. The Tryptophan Metabolite Indole-3-Propionic Acid Raises Kynurenic Acid Levels in the Rat Brain In Vivo. Int J Tryptophan Res 2024; 17:11786469241262876. [PMID: 38911967 PMCID: PMC11191616 DOI: 10.1177/11786469241262876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 05/22/2024] [Indexed: 06/25/2024] Open
Abstract
Alterations in the composition of the gut microbiota may be causally associated with several brain diseases. Indole-3-propionic acid (IPrA) is a tryptophan-derived metabolite, which is produced by intestinal commensal microbes, rapidly enters the circulation, and crosses the blood-brain barrier. IPrA has neuroprotective properties, which have been attributed to its antioxidant and bioenergetic effects. Here, we evaluate an alternative and/or complementary mechanism, linking IPrA to kynurenic acid (KYNA), another neuroprotective tryptophan metabolite. Adult Sprague-Dawley rats received an oral dose of IPrA (200 mg/kg), and both IPrA and KYNA were measured in plasma and frontal cortex 90 minutes, 6 or 24 hours later. IPrA and KYNA levels increased after 90 minutes and 6 hours (brain IPrA: ~56- and ~7-fold; brain KYNA: ~4- and ~3-fold, respectively). In vivo microdialysis, performed in the medial prefrontal cortex and in the striatum, revealed increased KYNA levels (~2.5-fold) following the administration of IPrA (200 mg/kg, p.o), but IPrA failed to affect extracellular KYNA when applied locally. Finally, treatment with 100 or 350 mg IPrA, provided daily to the animals in the chow for a week, resulted in several-fold increases of IPrA and KYNA levels in both plasma and brain. These results suggest that exogenously supplied IPrA may provide a novel strategy to affect the function of KYNA in the mammalian brain.
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Affiliation(s)
- Korrapati V Sathyasaikumar
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, USA
| | - Tonali Blanco-Ayala
- Neurobiochemistry and Behavior Laboratory, National Institute of Neurology and Neurosurgery “Manuel Velasco Suárez,” Mexico City, Mexico
| | - Yiran Zheng
- Departments of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden
| | - Lilly Schwieler
- Departments of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden
| | - Sophie Erhardt
- Departments of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden
| | | | - Burkhard Poeggeler
- Department of Physiology, Johann-Friedrich-Blumenbach-Institute for Zoology and Anthropology, Georg-August-Universität Göttingen, Germany
| | - Robert Schwarcz
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, USA
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5
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Li X, Chen D, Chen X, Jiang C, Guo Y, Hang J, Tao L, Li Y, Yu H. Study on the correlation between serum indole-3-propionic acid levels and the progression and prognosis of acute ischemic stroke. J Stroke Cerebrovasc Dis 2024; 33:107680. [PMID: 38508478 DOI: 10.1016/j.jstrokecerebrovasdis.2024.107680] [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: 12/19/2023] [Revised: 03/04/2024] [Accepted: 03/14/2024] [Indexed: 03/22/2024] Open
Abstract
OBJECTIVE This study aimed to explore the correlation between the serum level of indole-3-propionic acid (IPA) and the progression and prognosis of acute cerebral infarction (ACI). METHODS This study enrolled 197 patients with ACI, and 53 participants from a community-based stroke screening program during the same period were included as the control group. The patients with ACI were divided into quartiles of serum IPA. A logistic regression model was used for comparison. Receiver operating characteristic (ROC) curves were drawn to evaluate the predictive value of the IPA. RESULTS Compared with the healthy control group, the ACI group had lower serum IPA (P < 0.05). The serum IPA was an independent factor for acute ischemic stroke (OR=0.992, 95% CI: 0.984-0.999, P=0.035). The serum IPA was lower in patients with progressive stroke or poor prognosis than in patients with stable stroke or good prognosis (P < 0.05). Patients with ACI with low serum IPA are prone to progression and poor prognosis. The best cutoff value for predicting progression was 193.62 pg/mL (sensitivity, 67.5%; specificity 83.7%), and that for poor prognosis was 193.77 pg/mL (sensitivity, 71.1%; specificity, 72.5%). CONCLUSION The serum level of IPA was an independent predictor of ACI and had certain clinical value for predicting stroke progression and prognosis in patients with ACI.
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Affiliation(s)
- Xiaobo Li
- Clinical Medical College of Yangzhou University, Yangzhou, 225001, China; Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou, 225001, China
| | - Danni Chen
- Clinical Medical College of Yangzhou University, Yangzhou, 225001, China; Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou, 225001, China
| | - Xin Chen
- Clinical Medical College of Yangzhou University, Yangzhou, 225001, China; Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou, 225001, China; Department of Neuro Intensive Care Unit, Northern Jiangsu People's Hospital, Yangzhou, 225001, China
| | - Chao Jiang
- Clinical Medical College of Yangzhou University, Yangzhou, 225001, China; Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou, 225001, China
| | - Yiming Guo
- Clinical Medical College of Yangzhou University, Yangzhou, 225001, China; Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou, 225001, China
| | - Jing Hang
- Clinical Medical College of Yangzhou University, Yangzhou, 225001, China; Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou, 225001, China; Department of Neuro Intensive Care Unit, Northern Jiangsu People's Hospital, Yangzhou, 225001, China
| | - Luhang Tao
- Clinical Medical College of Yangzhou University, Yangzhou, 225001, China; Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou, 225001, China; Department of Neuro Intensive Care Unit, Northern Jiangsu People's Hospital, Yangzhou, 225001, China
| | - Yuping Li
- Clinical Medical College of Yangzhou University, Yangzhou, 225001, China; Department of Neuro Intensive Care Unit, Northern Jiangsu People's Hospital, Yangzhou, 225001, China; Department of Neurosurgery, Clinical Medical College of Yangzhou University, Yangzhou, 225001, China
| | - Hailong Yu
- Clinical Medical College of Yangzhou University, Yangzhou, 225001, China; Department of Neurology, Northern Jiangsu People's Hospital, Yangzhou, 225001, China; Department of Neuro Intensive Care Unit, Northern Jiangsu People's Hospital, Yangzhou, 225001, China.
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Nasta TZ, Tabandeh MR, Amini K, Abbasi A, Dayer D, Jalili C. The influence of indole propionic acid on molecular markers of steroidogenesis, ER stress, and apoptosis in rat granulosa cells exposed to high glucose conditions. J Steroid Biochem Mol Biol 2024; 240:106509. [PMID: 38508473 DOI: 10.1016/j.jsbmb.2024.106509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/13/2024] [Accepted: 03/17/2024] [Indexed: 03/22/2024]
Abstract
Hyperglycemia is known as one of the main causes of infertility in human societies. Indole propionic acid (IPA) is produced by intestinal microbiota and has antioxidant and anti-inflammatory properties. This study aims to investigate the effects of IPA on molecular indices of steroidogenesis, ER stress, and apoptosis induced by high glucose (HG) in granulosa cells. Primary GCs, isolated from ovarian follicles of Rats were cultured in 5 mM (control) and 30 mM (HG) of glucose and in the presence of 10 and 20 µM of IPA for 24 h. The cell viability was assessed by MTT. The gene expression of P450SCC, 3βHSD, CYP19A, BAX, BCL2, and STAR was evaluated by Real-Time PCR. Protein expression of ATF6, PERK, GRP78, and CHOP determined by western blot. Progesterone, estradiol, IL-1β, and TNF-α were measured by ELISA. HG decreased the viability, and expression of P450SCC, 3βHSD, CYP19A, BCL2, STAR, and increased BAX. 10 and 20 µM of IPA increased cell viability, expression of P450SCC, 3βHSD, CYP19A, BCL2 and STAR and decreased BAX compared to the HG group. The expression of ATF6, PERK, GRP78, and CHOP proteins increased by HG and IPA decreased the expression of these proteins compared to the HG group. Also, HG decreased progesterone and estradiol levels and increased IL-1β and TNF-α. IPA significantly increased progesterone and estradiol and decreased IL-1β and TNF-α compared to the HG group. IPA can improve the side effects of HG in GCs of rats, as responsible cells for fertility, by improving steroidogenesis, regulation of ER-stress pathway, suppression of inflammation, and apoptosis.
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Affiliation(s)
- Touraj Zamir Nasta
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Reza Tabandeh
- Department of Basic Sciences, Division of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Komail Amini
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Ardeshir Abbasi
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Dian Dayer
- Cellular and Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Cyrus Jalili
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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Edzeamey FJ, Ramchunder Z, Pourzand C, Anjomani Virmouni S. Emerging antioxidant therapies in Friedreich's ataxia. Front Pharmacol 2024; 15:1359618. [PMID: 38379897 PMCID: PMC10876797 DOI: 10.3389/fphar.2024.1359618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 01/25/2024] [Indexed: 02/22/2024] Open
Abstract
Friedreich's ataxia (FRDA) is a rare childhood neurologic disorder, affecting 1 in 50,000 Caucasians. The disease is caused by the abnormal expansion of the GAA repeat sequence in intron 1 of the FXN gene, leading to the reduced expression of the mitochondrial protein frataxin. The disease is characterised by progressive neurodegeneration, hypertrophic cardiomyopathy, diabetes mellitus and musculoskeletal deformities. The reduced expression of frataxin has been suggested to result in the downregulation of endogenous antioxidant defence mechanisms and mitochondrial bioenergetics, and the increase in mitochondrial iron accumulation thereby leading to oxidative stress. The confirmation of oxidative stress as one of the pathological signatures of FRDA led to the search for antioxidants which can be used as therapeutic modality. Based on this observation, antioxidants with different mechanisms of action have been explored for FRDA therapy since the last two decades. In this review, we bring forth all antioxidants which have been investigated for FRDA therapy and have been signed off for clinical trials. We summarise their various target points in FRDA disease pathway, their performances during clinical trials and possible factors which might have accounted for their failure or otherwise during clinical trials. We also discuss the limitation of the studies completed and propose possible strategies for combinatorial therapy of antioxidants to generate synergistic effect in FRDA patients.
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Affiliation(s)
- Fred Jonathan Edzeamey
- Ataxia Research Group, Division of Biosciences, Department of Life Sciences, College of Health, Medicine, and Life Sciences (CHMLS), Brunel University London, Uxbridge, United Kingdom
| | - Zenouska Ramchunder
- Ataxia Research Group, Division of Biosciences, Department of Life Sciences, College of Health, Medicine, and Life Sciences (CHMLS), Brunel University London, Uxbridge, United Kingdom
| | - Charareh Pourzand
- Department of Life Sciences, University of Bath, Bath, United Kingdom
- Centre for Therapeutic Innovation, University of Bath, Bath, United Kingdom
| | - Sara Anjomani Virmouni
- Ataxia Research Group, Division of Biosciences, Department of Life Sciences, College of Health, Medicine, and Life Sciences (CHMLS), Brunel University London, Uxbridge, United Kingdom
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8
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Luo K, Wang Z, Peters BA, Hanna DB, Wang T, Sollecito CC, Grassi E, Wiek F, St Peter L, Usyk M, Post WS, Landay AL, Hodis HN, Weber KM, French A, Golub ET, Lazar J, Gustafson D, Sharma A, Anastos K, Clish CB, Knight R, Kaplan RC, Burk RD, Qi Q. Tryptophan metabolism, gut microbiota, and carotid artery plaque in women with and without HIV infection. AIDS 2024; 38:223-233. [PMID: 37199567 PMCID: PMC10640661 DOI: 10.1097/qad.0000000000003596] [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] [Indexed: 05/19/2023]
Abstract
OBJECTIVE The perturbation of tryptophan (TRP) metabolism has been linked with HIV infection and cardiovascular disease (CVD), but the interrelationship among TRP metabolites, gut microbiota, and atherosclerosis remain unclear in the context of HIV infection. METHODS We included 361 women (241 HIV+, 120 HIV-) with carotid artery plaque assessments from the Women's Interagency HIV Study, measured 10 plasma TRP metabolites and profiled fecal gut microbiome. TRP metabolite-related gut bacteria were selected through the Analysis of Compositions of Microbiomes with Bias Correction method. Associations of TRP metabolites and related microbial features with plaque were examined using multivariable logistic regression. RESULTS Although plasma kynurenic acid (KYNA) [odds ratio (OR) = 1.93, 95% confidence interval (CI): 1.12-3.32 per one SD increase; P = 0.02) and KYNA/TRP [OR = 1.83 (95% CI 1.08-3.09), P = 0.02] were positively associated with plaque, indole-3-propionate (IPA) [OR = 0.62 (95% CI 0.40-0.98), P = 0.03] and IPA/KYNA [OR = 0.51 (95% CI 0.33-0.80), P < 0.01] were inversely associated with plaque. Five gut bacterial genera and many affiliated species were positively associated with IPA (FDR-q < 0.25), including Roseburia spp ., Eubacterium spp., Lachnospira spp., and Coprobacter spp.; but no bacterial genera were found to be associated with KYNA. Furthermore, an IPA-associated-bacteria score was inversely associated with plaque [OR = 0.47 (95% CI 0.28-0.79), P < 0.01]. But no significant effect modification by HIV serostatus was observed in these associations. CONCLUSION In a cohort of women living with and without HIV infection, plasma IPA levels and related gut bacteria were inversely associated with carotid artery plaque, suggesting a potential beneficial role of IPA and its gut bacterial producers in atherosclerosis and CVD.
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Affiliation(s)
- Kai Luo
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Zheng Wang
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Brandilyn A Peters
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York, USA
| | - David B Hanna
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Tao Wang
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Christopher C Sollecito
- Department of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Evan Grassi
- Department of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Fanua Wiek
- Department of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Lauren St Peter
- Department of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Mykhaylo Usyk
- Department of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Wendy S Post
- Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Alan L Landay
- Department of Internal Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Howard N Hodis
- Atherosclerosis Research Unit, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | | | - Audrey French
- Department of Internal Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Elizabeth T Golub
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Jason Lazar
- Department of Medicine, State University of New York Downstate Medical Center, Brooklyn, New York, USA
| | - Deborah Gustafson
- Department of Neurology, State University of New York-Downstate Medical Center, Brooklyn, New York, USA
| | - Anjali Sharma
- Department of Medicine, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Kathryn Anastos
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York, USA
- Department of Medicine, Albert Einstein College of Medicine, Bronx, New York, USA
- Department of Obstetrics & Gynecology and Women’s Health, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Clary B Clish
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Rob Knight
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, USA
- Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
- Center for Microbiome Innovation, University of California, San Diego, La Jolla, CA, USA
- Department of Computer Science and Engineering, University of California, San Diego, La Jolla, CA, USA
| | - Robert C Kaplan
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York, USA
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Robert D Burk
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York, USA
- Department of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, New York, USA
- Department of Obstetrics & Gynecology and Women’s Health, Albert Einstein College of Medicine, Bronx, New York, USA
- Department of Pediatrics, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Qibin Qi
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York, USA
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
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9
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Nassar A, Kodi T, Satarker S, Gurram PC, Fayaz SM, Nampoothiri M. Astrocytic transcription factors REST, YY1, and putative microRNAs in Parkinson's disease and advanced therapeutic strategies. Gene 2024; 892:147898. [PMID: 37832803 DOI: 10.1016/j.gene.2023.147898] [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: 03/13/2023] [Revised: 07/10/2023] [Accepted: 10/10/2023] [Indexed: 10/15/2023]
Abstract
Transcription factors (TF) and microRNAs are regulatory factors in astrocytes and are linked to several Parkinson's disease (PD) progression causes, such as disruption of glutamine transporters in astrocytes and concomitant disrupted glutamine uptake and inflammation. REST, a crucial TF, has been documented as an epigenetic repressor that limits the expression of neuronal genes in non-neural cells. REST activity is significantly linked to its corepressors in astrocytes, specifically histone deacetylases (HDACs), CoREST, and MECP2. Another REST-regulating TF, YY1, has been studied in astrocytes, and its interaction with REST has been investigated. In this review, the molecular processes that support the astrocytic control of REST and YY1 in terms of the regulation of glutamate transporter EAAT2 were addressed in a more detailed and comprehensive manner. Both TFs' function in astrocytes and how astrocyte abnormalities cause PD is still a mystery. Moreover, microRNAs (short non-coding RNAs) are key regulators that have been correlated to the expression and regulation of numerous genes linked to PD. The identification of numerous miRs that are engaged in astrocyte dysfunction that triggers PD has been shown. The term "Gut-brain axis" refers to the two systems' mutual communication. Gut microbial dysbiosis, which mediates an imbalance of the gut-brain axis, might contribute to neurodegenerative illnesses through altered astrocytic regulation. New treatment approaches to modify the gut-brain axis and prevent astrocytic repercussions have also been investigated in this review.
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Affiliation(s)
- Ajmal Nassar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
| | - Triveni Kodi
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
| | - Sairaj Satarker
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
| | - Prasada Chowdari Gurram
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
| | - S M Fayaz
- Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
| | - Madhavan Nampoothiri
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
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10
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Gupta SK, Vyavahare S, Duchesne Blanes IL, Berger F, Isales C, Fulzele S. Microbiota-derived tryptophan metabolism: Impacts on health, aging, and disease. Exp Gerontol 2023; 183:112319. [PMID: 37898179 DOI: 10.1016/j.exger.2023.112319] [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: 08/30/2023] [Revised: 10/05/2023] [Accepted: 10/25/2023] [Indexed: 10/30/2023]
Abstract
The intricate interplay between gut microbiota and the host is pivotal in maintaining homeostasis and health. Dietary tryptophan (TRP) metabolism initiates a cascade of essential endogenous metabolites, including kynurenine, kynurenic acid, serotonin, and melatonin, as well as microbiota-derived Trp metabolites like tryptamine, indole propionic acid (IPA), and other indole derivatives. Notably, tryptamine and IPA, among the indole metabolites, exert crucial roles in modulating immune, metabolic, and neuronal responses at both local and distant sites. Additionally, these metabolites demonstrate potent antioxidant and anti-inflammatory activities. The levels of microbiota-derived TRP metabolites are intricately linked to the gut microbiota's health, which, in turn, can be influenced by age-related changes. This review aims to comprehensively summarize the cellular and molecular impacts of tryptamine and IPA on health and aging-related complications. Furthermore, we explore the levels of tryptamine and IPA and their corresponding bacteria in select diseased conditions, shedding light on their potential significance as biomarkers and therapeutic targets.
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Affiliation(s)
- Sonu Kumar Gupta
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Sagar Vyavahare
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Ian L Duchesne Blanes
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Ford Berger
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Carlos Isales
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA; Centre for Healthy Aging, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Sadanand Fulzele
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA; Centre for Healthy Aging, Medical College of Georgia, Augusta University, Augusta, GA, USA; Department of Cell Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, USA; Department of Orthopedic Surgery, Medical College of Georgia, Augusta University, Augusta, GA, USA.
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11
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Liu A, Shen H, Li Q, He J, Wang B, Du W, Li G, Zhang M, Zhang X. Determination of tryptophan and its indole metabolites in follicular fluid of women with diminished ovarian reserve. Sci Rep 2023; 13:17124. [PMID: 37816920 PMCID: PMC10564947 DOI: 10.1038/s41598-023-44335-9] [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: 05/31/2023] [Accepted: 10/06/2023] [Indexed: 10/12/2023] Open
Abstract
Tryptophan (TRP) and its indole metabolites exhibit numerous biological effects, especially their antioxidant properties. This study used untargeted metabolomics in conjunction with targeted metabolomics to investigate the differential expression of tryptophan and its indole metabolites in follicular fluid (FF) of diminished ovarian reserve (DOR) and normal ovarian reserve (NOR) populations. This study included patients with DOR (n = 50) and females with NOR (n = 35) who received in vitro fertilization and embryo transfer. Untargeted metabolomics suggests that diminished ovarian reserve affects the metabolic profile of FF, TRP and indole metabolites were significantly down-regulated in the DOR group. Targeted metabolomics quantification revealed that the levels of TRP, IPA and IAA in the FF of the DOR group were significantly lower than those of the NOR group (P < 0.01). The concentration of TRP in FF is positively correlated with the available embryo rate in NOR females. These results provide data support to explore the pathogenesis of DOR and to look for new biomarkers and ovarian protectors. Additionally, alterations in TRP and its indole metabolites in FF may indirectly reflect the interaction between intestinal flora and the follicular microenvironment.
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Affiliation(s)
- Ahui Liu
- Lanzhou University, Lanzhou, Gansu, People's Republic of China
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, People's Republic of China
| | - Haofei Shen
- Lanzhou University, Lanzhou, Gansu, People's Republic of China
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, People's Republic of China
| | - Qiuyuan Li
- Lanzhou University, Lanzhou, Gansu, People's Republic of China
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, People's Republic of China
| | - Juanjuan He
- Lanzhou University, Lanzhou, Gansu, People's Republic of China
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, People's Republic of China
| | - Bin Wang
- Lanzhou University, Lanzhou, Gansu, People's Republic of China
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, People's Republic of China
| | - Wenjing Du
- Lanzhou University, Lanzhou, Gansu, People's Republic of China
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, People's Republic of China
- The First Hospital of Lanzhou University, Chengguan District, No. 1 Dong Gang Xi Road, Lanzhou, 730000, Gansu, People's Republic of China
- Key Laboratory for Reproductive Medicine and Embryo of Gansu Province, Lanzhou, People's Republic of China
| | | | - Mingtong Zhang
- Gansu Inspection and Testing Technical Engineering Laboratory for Chinese Herbal and Tibetan Medicine, NMPA Key Laboratory for Quality Control of TCM, Gansu Institute for Drug Control, No.7 Yin'an Road, An Ning District, Lanzhou, 730070, Gansu, People's Republic of China.
| | - Xuehong Zhang
- The First Hospital of Lanzhou University, Chengguan District, No. 1 Dong Gang Xi Road, Lanzhou, 730000, Gansu, People's Republic of China.
- Key Laboratory for Reproductive Medicine and Embryo of Gansu Province, Lanzhou, People's Republic of China.
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12
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Gong Y, Chen A, Zhang G, Shen Q, Zou L, Li J, Miao YB, Liu W. Cracking Brain Diseases from Gut Microbes-Mediated Metabolites for Precise Treatment. Int J Biol Sci 2023; 19:2974-2998. [PMID: 37416776 PMCID: PMC10321288 DOI: 10.7150/ijbs.85259] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 05/24/2023] [Indexed: 07/08/2023] Open
Abstract
The gut-brain axis has been a subject of significant interest in recent years. Understanding the link between the gut and brain axis is crucial for the treatment of disorders. Here, the intricate components and unique relationship between gut microbiota-derived metabolites and the brain are explained in detail. Additionally, the association between gut microbiota-derived metabolites and the integrity of the blood-brain barrier and brain health is emphasized. Meanwhile, gut microbiota-derived metabolites with their recent applications, challenges and opportunities their pathways on different disease treatment are focus discussed. The prospective strategy of gut microbiota-derived metabolites potential applies to the brain disease treatments, such as Parkinson's disease and Alzheimer's disease, is proposed. This review provides a broad perspective on gut microbiota-derived metabolites characteristics facilitate understand the connection between gut and brain and pave the way for the development of a new medication delivery system for gut microbiota-derived metabolites.
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Affiliation(s)
- Ying Gong
- Department of Haematology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine of University of Electronic Science and Technology of China, No. 32, West Section 2, First Ring Road, Qingyang District, Chengdu 610000, China
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610041, China
| | - Anmei Chen
- Department of Haematology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine of University of Electronic Science and Technology of China, No. 32, West Section 2, First Ring Road, Qingyang District, Chengdu 610000, China
| | - Guohui Zhang
- Key Laboratory of reproductive medicine, Sichuan Provincial maternity and Child Health Care Hospital, Chengdu 610000, China
| | - Qing Shen
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610041, China
| | - Liang Zou
- School of Food and Biological Engineering, Chengdu University, Chengdu 610106, Sichuan, China
| | - Jiahong Li
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610041, China
| | - Yang-Bao Miao
- Department of Haematology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine of University of Electronic Science and Technology of China, No. 32, West Section 2, First Ring Road, Qingyang District, Chengdu 610000, China
| | - Weixin Liu
- Key Laboratory of reproductive medicine, Sichuan Provincial maternity and Child Health Care Hospital, Chengdu 610000, China
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13
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Lin CP, Huang PH, Chen CY, Tzeng IS, Wu MY, Chen JS, Chen JW, Lin SJ. Tributyrin Intake Attenuates Angiotensin II-Induced Abdominal Aortic Aneurysm in LDLR-/- Mice. Int J Mol Sci 2023; 24:ijms24098008. [PMID: 37175712 PMCID: PMC10178859 DOI: 10.3390/ijms24098008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/31/2023] [Accepted: 04/19/2023] [Indexed: 05/15/2023] Open
Abstract
Abdominal aortic aneurysm (AAA) is a multifactorial cardiovascular disease with a high risk of death, and it occurs in the infrarenal aorta with vascular dilatation. High blood pressure acts on the aortic wall, resulting in rupture and causing life-threatening intra-abdominal hemorrhage. Vascular smooth muscle cell (VSMC) dysregulation and extracellular matrix (ECM) degradation, especially elastin breaks, contribute to structural changes in the aortic wall. The pathogenesis of AAA includes the occurrence of oxidative stress, inflammatory cell infiltration, elastic fiber fragmentation, VSMC apoptosis, and phenotypic transformation. Tributyrin (TB) is decomposed by intestinal lipase and has a function similar to that of butyrate. Whether TB has a protective effect against AAA remains uncertain. In the present study, we established an AAA murine model by angiotensin II (AngII) induction in low-density lipoprotein receptor knockout (LDLR-/-) mice and investigated the effects of orally administered TB on the AAA size, ratio of macrophage infiltration, levels of matrix metalloproteinase (MMP) expression, and epigenetic regulation. TB attenuates AngII-induced AAA size and decreases elastin fragmentation, macrophage infiltration, and MMP expression in the medial layer of the aorta and reduces the levels of SBP (systolic blood pressure, p < 0.001) and MMP-2 (p < 0.02) in the serum. TB reduces the AngII-stimulated expression levels of MMP2 (p < 0.05), MMP9 (p < 0.05), MMP12, and MMP14 in human aortic smooth muscle cells (HASMCs). Moreover, TB and valproic acid (VPA), a histone deacetylase (HDAC) inhibitor, suppress AngII receptor type 1 (AT1R, p < 0.05) activation and increase the expression of acetyl histone H3 by HDAC activity inhibition (p < 0.05). Our findings suggest that TB exerts its protective effect by suppressing the activation of HDAC to attenuate the AngII-induced AT1R signaling cascade.
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Affiliation(s)
- Chih-Pei Lin
- Department of Laboratory Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan
- Division of Clinical Pathology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan
- Department of Laboratory Medicine and Biotechnology, College of Medicine, Tzu Chi University, Hualien 97004, Taiwan
| | - Po-Hsun Huang
- Department of Critical Medicine, Taipei Veterans General Hospital, Taipei 112201, Taiwan
- Cardiovascular Research Center, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Chi-Yu Chen
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - I-Shiang Tzeng
- Department of Research, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan
| | - Meng-Yu Wu
- Department of Emergency Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan
- Department of Emergency Medicine, School of Medicine, Tzu Chi University, Hualien 97004, Taiwan
| | - Jia-Shiong Chen
- Cardiovascular Research Center, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Jaw-Wen Chen
- Division of Cardiology & Healthcare and Management Center, Taipei Veterans General Hospital, Taipei 112201, Taiwan
- Institute of Pharmacology, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Shing-Jong Lin
- Division of Cardiology & Department of Medical Research, Taipei Veterans General Hospital, Taipei 112201, Taiwan
- Taipei Heart Institute, Taipei Medical University, Taipei 110301, Taiwan
- Division of Cardiology, Heart Center, Cheng-Hsin General Hospital, Taipei 11220, Taiwan
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14
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Karbownik MS, Sokołowska P, Kowalczyk E. Gut Microbiota Metabolites Differentially Release Gliotransmitters from the Cultured Human Astrocytes: A Preliminary Report. Int J Mol Sci 2023; 24:ijms24076617. [PMID: 37047602 PMCID: PMC10095279 DOI: 10.3390/ijms24076617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/16/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
Butyrate and indole-3-propionic acid represent the CNS-available gut microbiota metabolites exhibiting potentially beneficial effects on human brain function and being tested as antidepressants. Astrocytes represent one of the putative targets for the gut metabolites; however, the mechanism of action of butyrate and indole-3-propionic acid is not well understood. In order to test this mechanism, a human astrocyte cell-line culture was treated with the compounds or without them, and the supernatants were collected for the analysis of ATP and glutamate gliotransmitter release with the use of luminescent and fluorescent methods, respectively. A 10-min incubation of astrocytes with 1–5 mM butyrate increased the ATP gliotransmitter release by 78% (95%CI: 45–119%), p < 0.001. The effect was found to be mediated by the cytosolic Ca2+ mobilization. Both 10-min and 24-h treatments with indole-3-propionic acid produced no significant effects on the release of gliotransmitters. The results for glutamate release were inconclusive due to a specific glutamate release pattern discovered in the tested model. This preliminary report of butyrate-induced ATP gliotransmitter release appears to provide a novel mechanistic explanation for the beneficial effect of this gut microbiota metabolite on brain function; however, the results require further evaluation in more composed models.
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Affiliation(s)
- Michał Seweryn Karbownik
- Department of Pharmacology and Toxicology, Medical University of Lodz, Żeligowskiego 7/9, 90-752 Lodz, Poland
| | - Paulina Sokołowska
- Department of Pharmacology and Toxicology, Medical University of Lodz, Żeligowskiego 7/9, 90-752 Lodz, Poland
| | - Edward Kowalczyk
- Department of Pharmacology and Toxicology, Medical University of Lodz, Żeligowskiego 7/9, 90-752 Lodz, Poland
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15
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Zhuang H, Ren X, Jiang F, Zhou P. Indole-3-propionic acid alleviates chondrocytes inflammation and osteoarthritis via the AhR/NF-κB axis. Mol Med 2023; 29:17. [PMID: 36721094 PMCID: PMC9890697 DOI: 10.1186/s10020-023-00614-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 01/23/2023] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Osteoarthritis (OA) is a common chronic disease characterized by chronic inflammation and extracellular matrix degradation. Indole-3-propionic acid (IPA) is a tryptophan metabolite secreted by intestinal flora, which can exert anti-inflammatory effects in a variety of diseases. In this study, we further investigated the potential therapeutic role of IPA in OA and the underlying mechanism. METHODS IL-1β was utilized to induce chondrocyte inflammation. Then, the cytotoxicity of IPA on rat chondrocytes was assessed. Meanwhile, RT-qPCR, Griess reaction, ELISA, Western blot and immunofluorescence were performed to evaluate the expression of inflammatory factors and stromal proteins, and the NF-κB pathway in chondrocytes treated with IL-1β alone, with IPA or with aryl hydrocarbon receptor (AhR) knockdown. An OA rat model was established by anterior cruciate ligament transection, and hematoxylin-eosin staining, Safranin-O/Fast Green staining and immunochemistry were applied to estimate OA severity. RESULTS IPA did not affect cellular viability at concentrations up to 80 µM. IPA significantly inhibited the IL-1β-induced expression of inflammatory factors (Nitric oxide, PGE2, TNF-α, IL-6, iNOS and COX-2) and matrix-degrading enzymes (MMP-3, MMP-13 and ADAMTS-5), upregulated the expression of anabolic markers (aggrecan and collagen-II) and inactivated the NF-κB pathway. However, AhR knockdown could abolish the above protection capabilities and the suppression of the NF-κB pathway induced by IPA. Furthermore, IPA significantly reduced serum inflammatory cytokines expression, cartilage destruction and synovitis in vivo, demonstrating its protective role in OA progression. CONCLUSION IPA improved IL-1β-induced chondrocyte inflammation and extracellular matrix degradation through the AhR/NF-κB axis, which provides an innovative therapeutic strategy for OA.
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Affiliation(s)
- Huangming Zhuang
- grid.412632.00000 0004 1758 2270Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, 430060 China
| | - Xunshan Ren
- grid.412632.00000 0004 1758 2270Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, 430060 China
| | - Fuze Jiang
- grid.412632.00000 0004 1758 2270Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, 430060 China
| | - Panghu Zhou
- grid.412632.00000 0004 1758 2270Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, 430060 China
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16
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Del'Arco AE, Argolo DS, Guillemin G, Costa MDFD, Costa SL, Pinheiro AM. Neurological Infection, Kynurenine Pathway, and Parasitic Infection by Neospora caninum. Front Immunol 2022; 12:714248. [PMID: 35154065 PMCID: PMC8826404 DOI: 10.3389/fimmu.2021.714248] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 12/31/2021] [Indexed: 11/30/2022] Open
Abstract
Neuroinflammation is one of the most frequently studied topics of neurosciences as it is a common feature in almost all neurological disorders. Although the primary function of neuroinflammation is to protect the nervous system from an insult, the complex and sequential response of activated glial cells can lead to neurological damage. Depending on the type of insults and the time post-insult, the inflammatory response can be neuroprotective, neurotoxic, or, depending on the glial cell types, both. There are multiple pathways activated and many bioactive intermediates are released during neuroinflammation. One of the most common one is the kynurenine pathway, catabolizing tryptophan, which is involved in immune regulation, neuroprotection, and neurotoxicity. Different models have been used to study the kynurenine pathway metabolites to understand their involvements in the development and maintenance of the inflammatory processes triggered by infections. Among them, the parasitic infection Neospora caninum could be used as a relevant model to study the role of the kynurenine pathway in the neuroinflammatory response and the subset of cells involved.
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Affiliation(s)
- Ana Elisa Del'Arco
- Laboratory of Biochemistry and Veterinary Immunology, Center of Agrarian, Environmental and Biological Sciences, Federal University of Recôncavo of Bahia (UFRB), Cruz das Almas, Brazil
| | - Deivison Silva Argolo
- Laboratory of Neurochemistry and Cellular Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia (UFBA), Bahia, Brazil
| | - Gilles Guillemin
- Neuroinflammation Group, Macquarie Medicine School, Macquarie University, Sydney, NSW, Australia
| | - Maria de Fátima Dias Costa
- Laboratory of Neurochemistry and Cellular Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia (UFBA), Bahia, Brazil
| | - Silvia Lima Costa
- Laboratory of Neurochemistry and Cellular Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia (UFBA), Bahia, Brazil
| | - Alexandre Moraes Pinheiro
- Laboratory of Biochemistry and Veterinary Immunology, Center of Agrarian, Environmental and Biological Sciences, Federal University of Recôncavo of Bahia (UFRB), Cruz das Almas, Brazil
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17
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Biological Effects of Indole-3-Propionic Acid, a Gut Microbiota-Derived Metabolite, and Its Precursor Tryptophan in Mammals' Health and Disease. Int J Mol Sci 2022; 23:ijms23031222. [PMID: 35163143 PMCID: PMC8835432 DOI: 10.3390/ijms23031222] [Citation(s) in RCA: 62] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/19/2022] [Accepted: 01/19/2022] [Indexed: 02/06/2023] Open
Abstract
Actions of symbiotic gut microbiota are in dynamic balance with the host’s organism to maintain homeostasis. Many different factors have an impact on this relationship, including bacterial metabolites. Several substrates for their synthesis have been established, including tryptophan, an exogenous amino acid. Many biological processes are influenced by the action of tryptophan and its endogenous metabolites, serotonin, and melatonin. Recent research findings also provide evidence that gut bacteria-derived metabolites of tryptophan share the biological effects of their precursor. Thus, this review aims to investigate the biological actions of indole-3-propionic acid (IPA), a gut microbiota-derived metabolite of tryptophan. We searched PUBMED and Google Scholar databases to identify pre-clinical and clinical studies evaluating the impact of IPA on the health and pathophysiology of the immune, nervous, gastrointestinal and cardiovascular system in mammals. IPA exhibits a similar impact on the energetic balance and cardiovascular system to its precursor, tryptophan. Additionally, IPA has a positive impact on a cellular level, by preventing oxidative stress injury, lipoperoxidation and inhibiting synthesis of proinflammatory cytokines. Its synthesis can be diminished in the presence of different risk factors of atherosclerosis. On the other hand, protective factors, such as the introduction of a Mediterranean diet, tend to increase its plasma concentration. IPA seems to be a promising new target, linking gut health with the cardiovascular system.
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18
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Abstract
The gut microbiome influences many host physiologies, spanning gastrointestinal function, metabolism, immune homeostasis, neuroactivity, and behavior. Many microbial effects on the host are orchestrated by bidirectional interactions between the microbiome and immune system. Imbalances in this dialogue can lead to immune dysfunction and immune-mediated conditions in distal organs including the brain. Dysbiosis of the gut microbiome and dysregulated neuroimmune responses are common comorbidities of neurodevelopmental, neuropsychiatric, and neurological disorders, highlighting the importance of the gut microbiome–neuroimmune axis as a regulator of central nervous system homeostasis. In this review, we discuss recent evidence supporting a role for the gut microbiome in regulating the neuroimmune landscape in health and disease. Expected final online publication date for the Annual Review of Immunology, Volume 40 is April 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Lewis W. Yu
- Department of Integrative Biology and Physiology, University of California, Los Angeles, California 90095, USA;, ,
| | - Gulistan Agirman
- Department of Integrative Biology and Physiology, University of California, Los Angeles, California 90095, USA;, ,
| | - Elaine Y. Hsiao
- Department of Integrative Biology and Physiology, University of California, Los Angeles, California 90095, USA;, ,
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19
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Jaskiw GE, Xu D, Obrenovich ME, Donskey CJ. Small phenolic and indolic gut-dependent molecules in the primate central nervous system: levels vs. bioactivity. Metabolomics 2022; 18:8. [PMID: 34989922 DOI: 10.1007/s11306-021-01866-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 12/12/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION A rapidly growing body of data documents associations between disease of the brain and small molecules generated by gut-microbiota (GMB). While such metabolites can affect brain function through a variety of mechanisms, the most direct action would be on the central nervous system (CNS) itself. OBJECTIVE Identify indolic and phenolic GMB-dependent small molecules that reach bioactive concentrations in primate CNS. METHODS We conducted a PubMed search for metabolomic studies of the primate CNS [brain tissue or cerebrospinal fluid (CSF)] and then selected for phenolic or indolic metabolites that (i) had been quantified, (ii) were GMB-dependent. For each chemical we then conducted a search for studies of bioactivity conducted in vitro in human cells of any kind or in CNS cells from the mouse or rat. RESULTS 36 metabolites of interests were identified in primate CNS through targeted metabolomics. Quantification was available for 31/36 and in vitro bioactivity for 23/36. The reported CNS range for 8 metabolites 2-(3-hydroxyphenyl)acetic acid, 2-(4-hydroxyphenyl)acetic acid, 3-(3-hydroxyphenyl)propanoic acid, (E)-3-(3,4-dihydroxyphenyl)prop-2-enoic acid [caffeic acid], 3-hydroxybenzoic acid, 4-hydroxybenzoic acid, 2-acetamido-3-(1H-indol-3-yl)propanoic acid [N-acetyltryptophan], 1H-indol-3-yl hydrogen sulfate [indoxyl-3-sulfate] overlapped with a bioactive concentration. However, the number and quality of relevant studies of CNS neurochemistry as well as of bioactivity were highly limited. Structural isomers, multiple metabolites and potential confounders were inadequately considered. CONCLUSION The potential direct bioactivity of GMB-derived indolic and phenolic molecules on primate CNS remains largely unknown. The field requires additional strategies to identify and prioritize screening of the most promising small molecules that enter the CNS.
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Affiliation(s)
- George E Jaskiw
- Psychiatry Service 116(A), Veterans Affairs Northeast Ohio Healthcare System (VANEOHS), 10701 East Blvd., Cleveland, OH, 44106, USA.
- School of Medicine, Case Western Reserve University, Cleveland, OH, USA.
| | - Dongyan Xu
- Psychiatry Service 116(A), Veterans Affairs Northeast Ohio Healthcare System (VANEOHS), 10701 East Blvd., Cleveland, OH, 44106, USA
- School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Mark E Obrenovich
- Pathology and Laboratory Medicine Service, VANEOHS, Cleveland, OH, USA
- Research Service, VANEOHS, Cleveland, OH, USA
- Department of Chemistry, Case Western Reserve University, Cleveland, OH, USA
| | - Curtis J Donskey
- School of Medicine, Case Western Reserve University, Cleveland, OH, USA
- Geriatric Research, Education and Clinical Center (GRECC), VANEOHS, Cleveland, OH, USA
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20
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Dobielska M, Bartosik NK, Zyzik KA, Kowalczyk E, Karbownik MS. Mechanisms of Cognitive Impairment in Depression. May Probiotics Help? Front Psychiatry 2022; 13:904426. [PMID: 35757204 PMCID: PMC9218185 DOI: 10.3389/fpsyt.2022.904426] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 05/16/2022] [Indexed: 12/02/2022] Open
Abstract
Depression is the major cause of disability globally. Apart from lowered mood and accompanying symptoms, it leads to cognitive impairment that altogether predicts disadvantaged social functioning. Reduced cognitive function in depression appears a bit neglected in the field of clinical and molecular psychiatry, while it is estimated to occur in two-thirds of depressed patients and persist in at least one third of remitted patients. This problem, therefore, requires elucidation at the biomolecular and system levels and calls for improvement in therapeutic approach. In this review study, we address the above-mentioned issues by discussing putative mechanisms of cognitive decline in depression: (1) increased oxidative stress and (2) inflammation, (3) disturbed hypothalamus-pituitary-adrenals axis, and (4) reduced monoamines functionality. Moreover, we acknowledge additional underpinnings of cognitive impairment in depressed elderly: (5) vascular-originated brain ischemia and (6) amyloid-beta plaque accumulation. Additionally, by reviewing molecular, pre-clinical and clinical evidence, we propose gut microbiota-targeted strategies as potential adjuvant therapeutics. The study provides a consolidated source of knowledge regarding mechanisms of cognitive impairment in depression and may path the way toward improved treatment options.
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Affiliation(s)
- Maria Dobielska
- Students' Research Club, Department of Pharmacology and Toxicology, Medical University of Łódź, Łódź, Poland
| | - Natalia Karina Bartosik
- Students' Research Club, Department of Pharmacology and Toxicology, Medical University of Łódź, Łódź, Poland
| | - Kamil A Zyzik
- Institute of Sociology, Jagiellonian University, Kraków, Poland
| | - Edward Kowalczyk
- Department of Pharmacology and Toxicology, Medical University of Łódź, Łódź, Poland
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21
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Owumi SE, Adedara IA, Oyelere AK. Indole-3-propionic acid mitigates chlorpyrifos-mediated neurotoxicity by modulating cholinergic and redox-regulatory systems, inflammatory stress, apoptotic responses and DNA damage in rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 89:103786. [PMID: 34915193 DOI: 10.1016/j.etap.2021.103786] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 10/13/2021] [Accepted: 12/07/2021] [Indexed: 05/10/2023]
Abstract
This study probed the neuroprotective influence of indole-3-propionic acid (IPA) in rats exposed to chlorpyrifos (CPF) alone at 5 mg/kg body weight or co-administered with IPA at 12.5 and 25 mg/kg for 14 days. Behavioral data indicated that IPA significantly (p < 0.05) abated CPF-mediated anxiogenic-like behaviors with concomitant improvement in the locomotor and exploratory behaviors as substantiated by track plots and heat maps data. Also, IPA mitigated CPF-mediated diminution in cholinergic and antioxidant defense systems whereas it markedly improved thioredoxin level and thioredoxin reductase activity in cerebral and cerebellar tissues of the animals. Co-administration of IPA significantly enhanced anti-inflammatory cytokine, interleukin-10 but suppressed oxidative and inflammatory stress, caspase-9 and caspase-3 activation with concomitant reduction in 8-hydroxy-2'-deoxyguanosine (8-OHdG) level and histological damage. Collectively, IPA-mediated neuroprotection involves modulation of cholinergic and redox-regulatory systems, inflammatory stress, apoptotic responses and DNA damage in cerebrum and cerebellum of rats.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology Laboratory, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria.
| | - Isaac A Adedara
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Adegboyega K Oyelere
- School of Biochemistry and Chemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
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22
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Wu Y, Li J, Ding W, Ruan Z, Zhang L. Enhanced Intestinal Barriers by Puerarin in Combination with Tryptophan. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:15575-15584. [PMID: 34928145 DOI: 10.1021/acs.jafc.1c05830] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The intestinal barrier is essential for maintaining human intestinal health. The growing number of studies has shown that both puerarin and tryptophan and its metabolites have a beneficial effect on the intestinal barrier. This study aims at the combination of puerarin and tryptophan or its metabolites for improving the intestinal barrier. In our study, 40 female Sprague-Dawley rats were randomly divided into five groups (n = 8) for a 4-week experiment and dextran sodium sulfate was used to induce an intestinal barrier injury in rats. Our results showed that puerarin combined with tryptophan or its metabolites (indole-3-propionic acid, IPA) improved the intestinal barrier by enhancing the mucus layer barrier, which was mainly achieved by increasing the number of goblet cells and promoting the secretion of MUC2. Both TRPM5 and VAMP8 promoted MUC2 secretion in goblet cells through exocytosis, but their mechanisms of action are different. In our study, we found that puerarin and tryptophan showed different effects on TRPM5 and VAMP8, respectively. Puerarin enhances the expression of TRPM5, and tryptophan inhibits the expression of TRPM5; however, puerarin and tryptophan have no significant effect on the expression of VAMP8.
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Affiliation(s)
- You Wu
- State Key Laboratory of Food Science and Technology, Institute of Nutrition and School of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Jiaojiao Li
- State Key Laboratory of Food Science and Technology, Institute of Nutrition and School of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Wenjiao Ding
- State Key Laboratory of Food Science and Technology, Institute of Nutrition and School of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Zheng Ruan
- State Key Laboratory of Food Science and Technology, Institute of Nutrition and School of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Li Zhang
- State Key Laboratory of Food Science and Technology, Institute of Nutrition and School of Food Science and Technology, Nanchang University, Nanchang 330047, China
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23
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Spichak S, Donoso F, Moloney GM, Gunnigle E, Brown JM, Codagnone M, Dinan TG, Cryan JF. Microbially-derived short-chain fatty acids impact astrocyte gene expression in a sex-specific manner. Brain Behav Immun Health 2021; 16:100318. [PMID: 34589808 PMCID: PMC8474187 DOI: 10.1016/j.bbih.2021.100318] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/28/2021] [Accepted: 08/03/2021] [Indexed: 01/02/2023] Open
Abstract
Recent investigations in neuroscience implicate the role of microbial-derived metabolites, such as short-chain fatty acids (SCFAs) in brain health and disease. The SCFAs acetate, propionate and butyrate have pleiotropic effects within the nervous system. They are crucial for the maturation of the brain's innate immune cells, the microglia, and modulate other glial cells through the aryl-hydrocarbon receptor. Investigations in preclinical and clinical models find that SCFAs exert neuroprotective and antidepressant affects, while also modulating the stress response and satiety. However, many investigations thus far have not assessed the impact of sex on SCFA activity. Our novel investigation tested the impact of physiologically relevant doses of SCFAs on male and female primary cortical astrocytes. We find that butyrate (0–25 μM) correlates with increased Bdnf and Pgc1-α expression, implicating histone-deacetylase inhibitor pathways. Intriguingly, this effect is only seen in females. We also find that acetate (0–1500 μM) correlates with increased Ahr and Gfap expression in males only, suggesting immune modulatory pathways. In males, propionate (0–35 μM) correlates with increased Il-22 expression, further suggesting immunomodulatory actions. These findings show a novel sex-dependent impact of acetate and butyrate, but not propionate on astrocyte gene expression.
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Affiliation(s)
- Simon Spichak
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland.,APC Microbiome Institute, University College Cork, Cork, Ireland
| | - Francisco Donoso
- APC Microbiome Institute, University College Cork, Cork, Ireland.,Department of Psychiatry and Neurobehavioural Science, University College Cork, Cork, Ireland
| | - Gerard M Moloney
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland.,APC Microbiome Institute, University College Cork, Cork, Ireland
| | - Eoin Gunnigle
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland.,APC Microbiome Institute, University College Cork, Cork, Ireland
| | - Jillian M Brown
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
| | - Martin Codagnone
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland.,APC Microbiome Institute, University College Cork, Cork, Ireland
| | - Timothy G Dinan
- APC Microbiome Institute, University College Cork, Cork, Ireland.,Department of Psychiatry and Neurobehavioural Science, University College Cork, Cork, Ireland
| | - John F Cryan
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland.,APC Microbiome Institute, University College Cork, Cork, Ireland
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24
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Hanslik KL, Marino KM, Ulland TK. Modulation of Glial Function in Health, Aging, and Neurodegenerative Disease. Front Cell Neurosci 2021; 15:718324. [PMID: 34531726 PMCID: PMC8439422 DOI: 10.3389/fncel.2021.718324] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 07/27/2021] [Indexed: 01/15/2023] Open
Abstract
In the central nervous system (CNS), glial cells, such as microglia and astrocytes, are normally associated with support roles including contributions to energy metabolism, synaptic plasticity, and ion homeostasis. In addition to providing support for neurons, microglia and astrocytes function as the resident immune cells in the brain. The glial function is impacted by multiple aspects including aging and local CNS changes caused by neurodegeneration. During aging, microglia and astrocytes display alterations in their homeostatic functions. For example, aged microglia and astrocytes exhibit impairments in the lysosome and mitochondrial function as well as in their regulation of synaptic plasticity. Recent evidence suggests that glia can also alter the pathology associated with many neurodegenerative disorders including Alzheimer's disease (AD) and Parkinson's disease (PD). Shifts in the microbiome can impact glial function as well. Disruptions in the microbiome can lead to aberrant microglial and astrocytic reactivity, which can contribute to an exacerbation of disease and neuronal dysfunction. In this review, we will discuss the normal physiological functions of microglia and astrocytes, summarize novel findings highlighting the role of glia in aging and neurodegenerative diseases, and examine the contribution of microglia and astrocytes to disease progression.
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Affiliation(s)
- Kendra L. Hanslik
- Neuroscience Training Program, University of Wisconsin, Madison, WI, United States
| | - Kaitlyn M. Marino
- Neuroscience Training Program, University of Wisconsin, Madison, WI, United States
| | - Tyler K. Ulland
- Neuroscience Training Program, University of Wisconsin, Madison, WI, United States
- Department of Pathology and Laboratory Medicine, University of Wisconsin, Madison, WI, United States
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