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Liu X, Liu H, Wu X, Zhao Z, Wang S, Wang H, Qin X. Xiaoyaosan against depression through suppressing LPS mediated TLR4/NLRP3 signaling pathway in "microbiota-gut-brain" axis. JOURNAL OF ETHNOPHARMACOLOGY 2024; 335:118683. [PMID: 39121928 DOI: 10.1016/j.jep.2024.118683] [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: 05/08/2024] [Revised: 08/06/2024] [Accepted: 08/07/2024] [Indexed: 08/12/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Depression impairs not only central nervous system, but also peripheral systems of the host. Gut microbiota have been proved to be involved in the pathogenesis of depression. Xiaoyaosan (XYS) has a history of over a thousand years in China for treating depression, dramatically alleviating anxiety, cognitive disorders, and especially gastrointestinal dysfunctions. Yet, it still just scratches the surface of the anti-depression mechanisms of XYS. AIM OF THE STUDY This study aims to elucidate the mechanism of actions of XYS from the perspective of "microbiota-gut-brain" axis. MATERIALS AND METHODS We firstly evaluated the effects of XYS on the macroscopic behaviors of depressed rats that induced by chronic unpredictable mild stress (CUMS). Secondly, the effects of XYS on intestinal homeostasis of depressed rats were revealed by using dysbacteriosis model. Subsequently, the underlying mechanisms were demonstrated by 16S rRNA gene sequencing technology and molecular biology methods. Finally, correlation analysis and visualization of the anti-depression effects of XYS were performed from the "microbiota - gut - brain" perspective. RESULTS Our data indicated that XYS ameliorated the depression-like symptoms of CUMS rats, partly depending on the presence of gut microbiota. Furthermore, we illustrated that XYS reversed CUMS-induced gut dysbiosis of depressed rats in terms of decreasing the Bacteroidetes/Firmicutes ratio and the abundances of Bacteroides, and Corynebacterium, while increasing the abundances of Lactobacillus and Adlercreutzia. The significant enrichment of Bacteroides and the level of lipopolysaccharides (LPS) suggested that depression damaged the immune responses and gut barrier. Mechanistically, XYS significantly down-regulated the expression levels of factors that involved in TLR4/NLRP3 signaling pathway in the colon and brain tissues of depressed rats. In addition, XYS significantly increased the levels of claudin 1 and ZO-1, showing that XYS positively maintained the integrity of gut and blood-brain barriers (BBB). CONCLUSION Our study offers insights into the anti-depression effects of XYS through a lens of "microbiota-TLR4/NLRP3 signaling pathway-barriers", providing a foundation for enhancing clinical efficiency and enriching drug selection, and contributing to our understanding of the mechanisms of traditional Chinese medicines (TCMs) in treating depression.
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Affiliation(s)
- Xiaojie Liu
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China; The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China.
| | - Huimin Liu
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China; The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China
| | - Xiaoling Wu
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China; The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China
| | - Ziyu Zhao
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China; The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China
| | - Senyan Wang
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China; The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China
| | - Huimin Wang
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China; The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China
| | - Xuemei Qin
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China; The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, No. 92, Wucheng Rd. Xiaodian Dist., Taiyuan, 030006, Shanxi, China
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Yeom M, Ahn S, Hahm DH, Jang SY, Jang SH, Park SY, Jang JH, Park J, Oh JY, Lee IS, Kim K, Kwon SK, Park HJ. Acupuncture ameliorates atopic dermatitis by modulating gut barrier function in a gut microbiota-dependent manner in mice. JOURNAL OF INTEGRATIVE MEDICINE 2024:S2095-4964(24)00359-5. [PMID: 39138075 DOI: 10.1016/j.joim.2024.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 06/14/2024] [Indexed: 08/15/2024]
Abstract
OBJECTIVE Atopic dermatitis (AD) is a chronic inflammatory skin disease that may be linked to changes in the gut microbiome. Acupuncture has been proven to be effective in reducing AD symptoms without serious adverse events, but its underlying mechanism is not completely understood. The purpose of this study was to investigate whether the potential effect of acupuncture on AD is gut microbiota-dependent. METHODS AD-like skin lesions were induced by applying MC903 topically to the cheek of the mouse. Acupuncture was done at the Gok-Ji (LI11) acupoints. AD-like symptoms were assessed by lesion scores, scratching behavior, and histopathological changes; intestinal barrier function was measured by fecal output, serum lipopolysaccharide levels, histopathological changes, and mRNA expression of markers involved in intestinal permeability and inflammation. Gut microbiota was profiled using 16S rRNA gene sequencing from fecal samples. RESULTS Acupuncture effectively improved chronic itch as well as the AD-like skin lesions with epidermal thickening, and also significantly altered gut microbiota structure as revealed by β-diversity indices and analysis of similarities. These beneficial effects were eliminated by antibiotic depletion of gut microbiota, but were reproduced in gut microbiota-depleted mice that received a fecal microbiota transplant from acupuncture-treated mice. Interestingly, AD mice had intestinal barrier dysfunction as indicated by increased intestinal permeability, atrophy of the mucosal structure (reduced villus height and crypt depth), decreased expression of tight junctions and mucus synthesis genes, and increased expression of inflammatory mediators in the ileum. Acupuncture attenuated these abnormalities, which was gut microbiota-dependent. CONCLUSION Acupuncture ameliorates AD-like phenotypes in a gut microbiota-dependent manner and some of these positive benefits are explained by modulation of the intestinal barrier, providing new perspective for non-pharmacological strategies for modulating gut microbiota to prevent and treat AD. Please cite this article as: Yeom M, Ahn S, Hahm DH, Jang SY, Jang SH, Park SY, Jang JH, Park J, Oh JY, Lee IS, Kim K, Kwon SK, Park HJ. Acupuncture ameliorates atopic dermatitis by modulating gut barrier function in a gut microbiota-dependent manner in mice. J Integr Med. 2024; Epub ahead of print.
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Affiliation(s)
- Mijung Yeom
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sora Ahn
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Dae-Hyun Hahm
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Physiology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; BioNanocomposite Research Center, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sun-Young Jang
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Science in Korean Medicine, College of Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Se Hoon Jang
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Science in Korean Medicine, College of Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Su-Yang Park
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Science in Korean Medicine, College of Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jae-Hwan Jang
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jihan Park
- College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Ju-Young Oh
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - In-Seon Lee
- College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kyuseok Kim
- Department of Ophthalmology, Otorhinolaryngology and Dermatology of Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Soon-Kyeong Kwon
- Division of Applied Life Science (BK21), Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Hi-Joon Park
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Science in Korean Medicine, College of Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Anatomy & Information Sciences, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea.
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Wang G, Jiang Z, Song Y, Xing Y, He S, Boomi P. Gut microbiota contribution to selenium deficiency-induced gut-liver inflammation. Biofactors 2024; 50:311-325. [PMID: 37676478 DOI: 10.1002/biof.2006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 08/05/2023] [Indexed: 09/08/2023]
Abstract
There is limited knowledge about the factors that drive gut-liver axis changes after selenium (Se) deficiency-induced gut or liver injuries. Thus, we tested Se deficiency in mice to determine its effects on intestinal bacterial balance and whether it induced liver injury. Serum Se concentration, lipopolysaccharide (LPS) level, and liver injury biomarkers were tested using a biochemical method, while pathological changes in the liver and jejunum were observed via hematoxylin and eosin stain, and a fluorescence spectrophotometer was used to evaluate intestinal permeability. Tight junction (TJ)-related and toll-like receptor (TLR) signaling-related pathway genes and proteins were tested using quantitative polymerase chain reaction, western blotting, immunohistochemistry, and 16S ribosomal ribonucleic acid gene-targeted sequencing of jejunum microorganisms. Se deficiency significantly decreased glutathione peroxidase activity and disrupted the intestinal flora, with the most significant effect being a decrease in Lactobacillus reuteri. The expression of TJ-related genes and proteins decreased significantly with increased treatment time, whereas supplementation with Se, fecal microbiota transplantation, or L. reuteri reversed these decreases. Signs of liver injury and LPS content were significantly increased after intestinal flora imbalance or jejunum injury, and the levels of TLR signaling-related genes were significantly increased. The results indicated that Se deficiency disrupted the microbiota balance, decreased the expression of intestinal TJ factors, and increased intestinal permeability. By contrast, LPS increased due to a bacterial imbalance, which may induce inflammatory liver injury via the TLR4 signaling pathway.
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Affiliation(s)
- Guodong Wang
- Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang Institute of Technology, Anyang, Henan, China
| | - Zhihui Jiang
- Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang Institute of Technology, Anyang, Henan, China
| | - Yuwei Song
- Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang Institute of Technology, Anyang, Henan, China
| | - Yueteng Xing
- Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang Institute of Technology, Anyang, Henan, China
| | - Simin He
- Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang Institute of Technology, Anyang, Henan, China
| | - P Boomi
- Department of Bioinformatics, Alagappa University, Karaikudi, Tamil Nadu, India
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Labban SA, Murshid L, Yousef Alhazmi A, Bafarat AY, Alharbi NM. New-Onset Illness Anxiety Disorder After Helicobacter Pylori Infection: A Case Report. Cureus 2024; 16:e52613. [PMID: 38374842 PMCID: PMC10875716 DOI: 10.7759/cureus.52613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2024] [Indexed: 02/21/2024] Open
Abstract
In this study, we present a case of new-onset illness anxiety disorder (IAD) in a 21-year-old female patient after Heliobacter pylori infection. The patient experienced a distressing preoccupation with having or acquiring a serious illness with mild somatic symptoms for more than six months. IAD adversely affected our patient's life and made her engage in excessive care-seeking behaviors and maladaptive avoidance in some instances. In this case, we highlight the unique presentation of symptoms related to illness anxiety disorder and H. pylori infection. Furthermore, we discuss the possible psychosocial factors that are considered risk factors for developing IAD. We also discuss the pharmacological and psychological treatment options for patients with such a presentation.
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Affiliation(s)
- Suhail A Labban
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, SAU
| | - Leen Murshid
- Psychiatry, King Abdulaziz Medical City, Jeddah, SAU
| | - Amal Yousef Alhazmi
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, SAU
| | - Ammar Y Bafarat
- Psychiatry, King Abdulaziz Hospital, Jeddah, SAU
- Psychiatry, Ministry of National Guard Health Affairs, Riyadh, SAU
| | - Nuha M Alharbi
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, SAU
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Chen YL, Bao CJ, Duan JL, Xie Y, Lu WL. Overcoming biological barriers by virus-like drug particles for drug delivery. Adv Drug Deliv Rev 2023; 203:115134. [PMID: 37926218 DOI: 10.1016/j.addr.2023.115134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 10/27/2023] [Accepted: 10/30/2023] [Indexed: 11/07/2023]
Abstract
Virus-like particles (VLPs) have natural structural antigens similar to those found in viruses, making them valuable in vaccine immunization. Furthermore, VLPs have demonstrated significant potential in drug delivery, and emerged as promising vectors for transporting chemical drug, genetic drug, peptide/protein, and even nanoparticle drug. With virus-like permeability and strong retention, they can effectively target specific organs, tissues or cells, facilitating efficient intracellular drug release. Further modifications allow VLPs to transfer across various physiological barriers, thus acting the purpose of efficient drug delivery and accurate therapy. This article provides an overview of VLPs, covering their structural classifications, deliverable drugs, potential physiological barriers in drug delivery, strategies for overcoming these barriers, and future prospects.
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Affiliation(s)
- Yu-Ling Chen
- State Key Laboratory of Natural and Biomimetic Drugs, Beijing Key Laboratory of Molecular Pharmaceutics and Drug Delivery Systems, and School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Chun-Jie Bao
- State Key Laboratory of Natural and Biomimetic Drugs, Beijing Key Laboratory of Molecular Pharmaceutics and Drug Delivery Systems, and School of Pharmaceutical Sciences, Peking University, Beijing 100191, China; School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China; Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jia-Lun Duan
- State Key Laboratory of Natural and Biomimetic Drugs, Beijing Key Laboratory of Molecular Pharmaceutics and Drug Delivery Systems, and School of Pharmaceutical Sciences, Peking University, Beijing 100191, China; Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Ying Xie
- State Key Laboratory of Natural and Biomimetic Drugs, Beijing Key Laboratory of Molecular Pharmaceutics and Drug Delivery Systems, and School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Wan-Liang Lu
- State Key Laboratory of Natural and Biomimetic Drugs, Beijing Key Laboratory of Molecular Pharmaceutics and Drug Delivery Systems, and School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
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Khezri MR, Esmaeili A, Ghasemnejad-Berenji M. Role of Bmal1 and Gut Microbiota in Alzheimer's Disease and Parkinson's Disease Pathophysiology: The Probable Effect of Melatonin on Their Association. ACS Chem Neurosci 2023; 14:3883-3893. [PMID: 37823531 DOI: 10.1021/acschemneuro.3c00418] [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] [Indexed: 10/13/2023] Open
Abstract
In recent years, the role of new factors in the pathophysiology of neurodegenerative diseases has been investigated. Alzheimer's disease (AD) and Parkinson's disease (PD) are the most common neurodegenerative diseases worldwide. Although pathological changes such as the accumulation of aggregated proteins in the brain and inflammatory responses are known as the main factors involved in the development of these diseases, new studies show the role of gut microbiota and circadian rhythm in the occurrence of these changes. However, the association between circadian rhythm and gut microbiota in AD and PD has not yet been investigated. Recent results propose that alterations in circadian rhythm regulators, mainly Bmal1, may regulate the abundance of gut microbiota. This correlation has been linked to the regulation of the expression of immune-related genes and Bmal-1 mediated oscillation of IgA and hydrogen peroxide production. These data seem to provide new insight into the molecular mechanism of melatonin inhibiting the progression of AD and PD. Therefore, this manuscript aims to review the role of the gut microbiota and circadian rhythm in health and AD and PD and also presents a hypothesis on the effect of melatonin on their communication.
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Affiliation(s)
- Mohammad Rafi Khezri
- Faculty of Pharmacy. Urmia University of Medical Sciences, Urmia 571478334, Iran
| | - Ayda Esmaeili
- Department of Clinical Pharmacy, School of Pharmacy, Urmia University of Medical Sciences, Urmia 5715799313, Iran
| | - Morteza Ghasemnejad-Berenji
- Department of Pharmacology and Toxicology, School of Pharmacy, Urmia University of Medical Sciences, Urmia 5715799313, Iran
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Nathani S, Das N, Katiyar P, Waghmode B, Sircar D, Roy P. Consumption of honey ameliorates lipopolysaccharide-induced intestinal barrier dysfunction via upregulation of tight junction proteins. Eur J Nutr 2023; 62:3033-3054. [PMID: 37493680 DOI: 10.1007/s00394-023-03203-y] [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: 08/07/2022] [Accepted: 06/30/2023] [Indexed: 07/27/2023]
Abstract
PURPOSE The leaky gut barrier is an important factor leading to various inflammatory gastrointestinal disorders. The nutritional value of honey and variety of its health benefits have long been recognized. This study was undertaken to assess the role of Indian mustard honey in preventing lipopolysaccharide (LPS)-induced intestinal barrier dysfunction using a combination of in vitro and in vivo experimental model systems. METHODS LPS was used to induce intestinal barrier damage in a trans-well model of Caco-2 cells (1 µg/ml) and in Swiss albino mice (5 mg/kg body weight). Gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS) were used to analyse sugar and phenolic components in honey samples. The Caco-2 cell monolayer integrity was evaluated by transepithelial electrical resistance (TEER) and paracellular permeability assays. The histopathology of intestinal tissue was analysed by haematoxylin and eosin dual staining. The quantitative reverse transcription-polymerase chain reaction (qRT-PCR) was used to quantify the transcription of genes. The protein expression was analysed by immunofluorescence, western blot and ELISA-based techniques. RESULTS The in vitro data showed that honey prevented LPS-induced intestinal barrier dysfunction dose dependently as was measured by TEER and paracellular flux of FITC-dextran dye. Further, the in vivo data showed a prophylactic effect of orally administered honey as it prevented the loss of intestinal barrier integrity and villus structure. The cellular localization and expression of tight junction (TJ) proteins were upregulated along with downregulation of pro-inflammatory cytokines in response to the administration of honey with LPS. CONCLUSIONS The findings of this study suggest a propitious role of honey in the maintenance of TJ protein integrity, thereby preventing LPS-induced intestinal barrier disintegration.
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Affiliation(s)
- Sandip Nathani
- Molecular Endocrinology Laboratory, Department of Biosciences & Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247 667, India
| | - Neeladrisingha Das
- Molecular Endocrinology Laboratory, Department of Biosciences & Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247 667, India
| | - Parul Katiyar
- Molecular Endocrinology Laboratory, Department of Biosciences & Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247 667, India
| | - Bhairavnath Waghmode
- Plant Molecular Biology Laboratory, Department of Biosciences & Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247 667, India
| | - Debabrata Sircar
- Plant Molecular Biology Laboratory, Department of Biosciences & Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247 667, India
| | - Partha Roy
- Molecular Endocrinology Laboratory, Department of Biosciences & Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247 667, India.
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Talman L, Safarpour D. An Overview of Gastrointestinal Dysfunction in Parkinsonian Syndromes. Semin Neurol 2023; 43:583-597. [PMID: 37703887 DOI: 10.1055/s-0043-1771461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
Gastrointestinal (GI) dysfunction is a common nonmotor symptom in Parkinson's disease (PD) as well as other parkinsonian syndromes and may precede the onset of motor symptoms by decades. Involvement of all segments of the GI tract can lead to altered responses to medications and worsened quality of life for patients. While some GI symptoms occur in isolation, others overlap. Therefore, understanding the changes in different segments of the GI tract and how they relate to altered responses to PD treatment can guide both diagnostic and pharmacological interventions. Gut microbiota plays a critical role in immune activity and modulation of the enteric and central nervous systems. Understanding this bidirectional relationship helps to elucidate the pathogenesis of neurodegeneration. This review will describe the current understanding of how GI dysfunction develops in parkinsonian syndromes, common symptoms in PD and related disorders, and available treatments.
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Affiliation(s)
- Lauren Talman
- Department of Neurology School of Medicine, Oregon Health & Science University, Portland, Oregon
| | - Delaram Safarpour
- Department of Neurology School of Medicine, Oregon Health & Science University, Portland, Oregon
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Brown GC, Camacho M, Williams‐Gray CH. The Endotoxin Hypothesis of Parkinson's Disease. Mov Disord 2023; 38:1143-1155. [PMID: 37157885 PMCID: PMC10947365 DOI: 10.1002/mds.29432] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/14/2023] [Accepted: 04/19/2023] [Indexed: 05/10/2023] Open
Abstract
The endotoxin hypothesis of Parkinson's disease (PD) is the idea that lipopolysaccharide (LPS) endotoxins contribute to the pathogenesis of this disorder. LPS endotoxins are found in, and released from, the outer membrane of Gram-negative bacteria, for example in the gut. It is proposed that gut dysfunction in early PD leads to elevated LPS levels in the gut wall and blood, which promotes both α-synuclein aggregation in the enteric neurons and a peripheral inflammatory response. Communication to the brain via circulating LPS and cytokines in the blood and/or the gut-brain axis leads to neuroinflammation and spreading of α-synuclein pathology, exacerbating neurodegeneration in brainstem nuclei and loss of dopaminergic neurons in the substantia nigra, and manifesting in the clinical symptoms of PD. The evidence supporting this hypothesis includes: (1) gut dysfunction, permeability, and bacterial changes occur early in PD, (2) serum levels of LPS are increased in a proportion of PD patients, (3) LPS induces α-synuclein expression, aggregation, and neurotoxicity, (4) LPS causes activation of peripheral monocytes leading to inflammatory cytokine production, and (5) blood LPS causes brain inflammation and specific loss of midbrain dopaminergic neurons, mediated by microglia. If the hypothesis is correct, then treatment options might include: (1) changing the gut microbiome, (2) reducing gut permeability, (3) reducing circulating LPS levels, or (4) blocking the response of immune cells and microglia to LPS. However, the hypothesis has a number of limitations and requires further testing, in particular whether reducing LPS levels can reduce PD incidence, progression, or severity. © 2023 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Guy C. Brown
- Department of BiochemistryUniversity of CambridgeCambridgeUK
| | - Marta Camacho
- Department of Clinical NeurosciencesUniversity of CambridgeCambridgeUK
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Li Z, Jiang Y, Long C, Peng Q, Yue R. The gut microbiota-astrocyte axis: Implications for type 2 diabetic cognitive dysfunction. CNS Neurosci Ther 2023; 29 Suppl 1:59-73. [PMID: 36601656 PMCID: PMC10314112 DOI: 10.1111/cns.14077] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/20/2022] [Accepted: 12/18/2022] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Diabetic cognitive dysfunction (DCD) is one of the most insidious complications of type 2 diabetes mellitus, which can seriously affect the ability to self-monitoring of blood glucose and the quality of life in the elderly. Previous pathological studies of cognitive dysfunction have focused on neuronal dysfunction, characterized by extracellular beta-amyloid deposition and intracellular tau hyperphosphorylation. In recent years, astrocytes have been recognized as a potential therapeutic target for cognitive dysfunction and important participants in the central control of metabolism. The disorder of gut microbiota and their metabolites have been linked to a series of metabolic diseases such as diabetes mellitus. The imbalance of intestinal flora has the effect of promoting the occurrence and deterioration of several diabetes-related complications. Gut microbes and their metabolites can drive astrocyte activation. AIMS We reviewed the pathological progress of DCD related to the "gut microbiota-astrocyte" axis in terms of peripheral and central inflammation, intestinal and blood-brain barrier (BBB) dysfunction, systemic and brain energy metabolism disorders to deepen the pathological research progress of DCD and explore the potential therapeutic targets. CONCLUSION "Gut microbiota-astrocyte" axis, unique bidirectional crosstalk in the brain-gut axis, mediates the intermediate pathological process of neurocognitive dysfunction secondary to metabolic disorders in diabetes mellitus.
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Affiliation(s)
- Zi‐Han Li
- Hospital of Chengdu University of Traditional Chinese MedicineChengduChina
| | - Ya‐Yi Jiang
- Hospital of Chengdu University of Traditional Chinese MedicineChengduChina
| | - Cai‐Yi Long
- Hospital of Chengdu University of Traditional Chinese MedicineChengduChina
| | - Qian Peng
- Hospital of Chengdu University of Traditional Chinese MedicineChengduChina
| | - Ren‐Song Yue
- Hospital of Chengdu University of Traditional Chinese MedicineChengduChina
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Zhao S, Hu S, Sun K, Luo L, Zeng L. Long-term Pu-erh tea consumption improves blue light-induced depression-like behaviors. Food Funct 2023; 14:2313-2325. [PMID: 36779860 DOI: 10.1039/d2fo02780a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Blue light emitted by smartphones and tablets at night increases the risk of depression. Pu-erh tea has been reported to reduce the risk of depression by regulating tryptophan metabolism, but its underlying protective mechanism on depression induced by blue light at night (BLAN) remains unclear. In this work, two groups of C57BL6/J mice were given water or 0.25% (w/v) Pu-erh tea for 120 days, followed by a 45-day BLAN treatment (400 lux blue light between 21:00 and 23:00) to simulate blue light emitted from electronic equipment. Our results indicated that BLAN induced depression-like behaviors and gut microbiota disorders in healthy mice. Pu-erh tea intake significantly reshaped the gut microbiome (especially Bifidobacterium) and regulated the metabolism of short-chain fatty acids (SCFAs) which protected the integrity of the intestinal barrier. This improvement further reduced blood-brain barrier (BBB) damage and alleviated neuroinflammation by inhibiting MyD88/NF-κB pathways which finally regulated neurotransmitters such as brain-derived neurotrophic factor (BDNF) and serotonin (5-hydroxytryptamine, 5-HT). Collectively, 0.25% (w/v) Pu-erh tea has the potential to prevent BLAN-induced depression-like behaviors by reshaping the gut microbiota and increasing the generation of SCFAs via the gut-brain axis.
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Affiliation(s)
- Sibo Zhao
- College of Food Science, Southwest University, Beibei, Chongqing 400715, China.
| | - Shanshan Hu
- College of Food Science, Southwest University, Beibei, Chongqing 400715, China.
| | - Kang Sun
- College of Food Science, Southwest University, Beibei, Chongqing 400715, China.
| | - Liyong Luo
- College of Food Science, Southwest University, Beibei, Chongqing 400715, China.
| | - Liang Zeng
- College of Food Science, Southwest University, Beibei, Chongqing 400715, China.
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12
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Dietary Complex Probiotic Supplementation Changed the Composition of Intestinal Short-Chain Fatty Acids and Improved the Average Daily Gain of Growing Pigs. Vet Sci 2023; 10:vetsci10020079. [PMID: 36851383 PMCID: PMC9965097 DOI: 10.3390/vetsci10020079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/14/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
At present, probiotics are being extensively evaluated for their efficacy as an alternative to antibiotics, and their safety in livestock production. In this study, 128 (Duroc, Yorkshire and Landrace) pigs with an average initial body weight of 28.38 ± 0.25 kg were allocated to four dietary treatments in a randomized complete-block design. There were eight pens per treatment, with four pigs per pen (two barrows and two gilts). Dietary treatments included: (1) control diet; (2) control diet + 0.05% complex probiotic; (3) control diet + 0.1% complex probiotic; (4) control diet + 0.2% complex probiotic. During the 28-day experimental period, the feeding of 0.1% complex probiotic in the diet increased body weight and average daily gain (p < 0.05). The addition of complex probiotics decreased total cholesterol and glucose concentrations in the blood (p < 0.01). Acetate concentrations in the blood increased from 0.1% complex probiotic in the diet (p < 0.05), while NH3 and H2S emissions in the feces decreased (p < 0.05) from 0.1% or 0.2% complex probiotic in the diet. In conclusion, dietary complex probiotic supplementation changed the composition of intestinal short-chain fatty acids and improved growth performance for growing pigs.
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13
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Pezzino S, Sofia M, Greco LP, Litrico G, Filippello G, Sarvà I, La Greca G, Latteri S. Microbiome Dysbiosis: A Pathological Mechanism at the Intersection of Obesity and Glaucoma. Int J Mol Sci 2023; 24:ijms24021166. [PMID: 36674680 PMCID: PMC9862076 DOI: 10.3390/ijms24021166] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
The rate at which obesity is becoming an epidemic in many countries is alarming. Obese individuals have a high risk of developing elevated intraocular pressure and glaucoma. Additionally, glaucoma is a disease of epidemic proportions. It is characterized by neurodegeneration and neuroinflammation with optic neuropathy and the death of retinal ganglion cells (RGC). On the other hand, there is growing interest in microbiome dysbiosis, particularly in the gut, which has been widely acknowledged to play a prominent role in the etiology of metabolic illnesses such as obesity. Recently, studies have begun to highlight the fact that microbiome dysbiosis could play a critical role in the onset and progression of several neurodegenerative diseases, as well as in the development and progression of several ocular disorders. In obese individuals, gut microbiome dysbiosis can induce endotoxemia and systemic inflammation by causing intestinal barrier malfunction. As a result, bacteria and their metabolites could be delivered via the bloodstream or mesenteric lymphatic vessels to ocular regions at the level of the retina and optic nerve, causing tissue degeneration and neuroinflammation. Nowadays, there is preliminary evidence for the existence of brain and intraocular microbiomes. The altered microbiome of the gut could perturb the resident brain-ocular microbiome ecosystem which, in turn, could exacerbate the local inflammation. All these processes, finally, could lead to the death of RGC and neurodegeneration. The purpose of this literature review is to explore the recent evidence on the role of gut microbiome dysbiosis and related inflammation as common mechanisms underlying obesity and glaucoma.
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Affiliation(s)
- Salvatore Pezzino
- Department of Surgical Sciences and Advanced Technologies “G. F. Ingrassia”, Cannizzaro Hospital, University of Catania, 95126 Catania, Italy
| | - Maria Sofia
- Department of Surgical Sciences and Advanced Technologies “G. F. Ingrassia”, Cannizzaro Hospital, University of Catania, 95126 Catania, Italy
| | - Luigi Piero Greco
- Department of Surgical Sciences and Advanced Technologies “G. F. Ingrassia”, Cannizzaro Hospital, University of Catania, 95126 Catania, Italy
| | - Giorgia Litrico
- Department of Surgical Sciences and Advanced Technologies “G. F. Ingrassia”, Cannizzaro Hospital, University of Catania, 95126 Catania, Italy
| | - Giulia Filippello
- Complex Operative Unit of Ophtalmology, Cannizzaro Hospital, University of Catania, 95126 Catania, Italy
| | - Iacopo Sarvà
- Department of Surgical Sciences and Advanced Technologies “G. F. Ingrassia”, Cannizzaro Hospital, University of Catania, 95126 Catania, Italy
| | - Gaetano La Greca
- Department of Surgical Sciences and Advanced Technologies “G. F. Ingrassia”, Cannizzaro Hospital, University of Catania, 95126 Catania, Italy
| | - Saverio Latteri
- Department of Surgical Sciences and Advanced Technologies “G. F. Ingrassia”, Cannizzaro Hospital, University of Catania, 95126 Catania, Italy
- Correspondence: ; Tel.: +39-0957263584
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14
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Xiang Q, Liu Y, Wu Z, Wang R, Zhang X. New hints for improving sleep: Tea polyphenols mediate gut microbiota to regulate circadian disturbances. FOOD FRONTIERS 2023. [DOI: 10.1002/fft2.199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
- Qiao Xiang
- Department of Food Science and Engineering Ningbo University Ningbo P.R. China
| | - Yanan Liu
- Department of Food Science and Engineering Ningbo University Ningbo P.R. China
| | - Zufang Wu
- Department of Food Science and Engineering Ningbo University Ningbo P.R. China
| | - Rui Wang
- Key Laboratory of Bio‐Resource and Eco‐Environment of Ministry of Education, College of Life Sciences Sichuan University Chengdu P.R. China
| | - Xin Zhang
- Department of Food Science and Engineering Ningbo University Ningbo P.R. China
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15
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Hao X, Ding N, Zhang Y, Yang Y, Zhao Y, Zhao J, Li Y, Li Z. Benign regulation of the gut microbiota: The possible mechanism through which the beneficial effects of manual acupuncture on cognitive ability and intestinal mucosal barrier function occur in APP/PS1 mice. Front Neurosci 2022; 16:960026. [PMID: 35992924 PMCID: PMC9382294 DOI: 10.3389/fnins.2022.960026] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 07/11/2022] [Indexed: 11/22/2022] Open
Abstract
Background Gut microbiota dysbiosis and intestinal barrier injury play vital roles in Alzheimer's disease (AD) onset and development. Our previous studies have demonstrated that manual acupuncture (MA) could improve the cognitive abilities of APP/PS1 mice. However, the effect of MA on the intestinal mucosal barrier and the gut microbiota mechanism through which this effect occurs remain to be clarified. Methods In the APP/PS1 manual acupuncture (Am) group, MA was applied in Baihui (GV20), Yintang (GV29), and Zusanli (ST36). Mice in the APP/PS1 antibiotic + manual acupuncture (Aa) group were treated with an antibiotic mixture and MA at the same time. Probiotics were delivered to the APP/PS1 probiotics (Ap) group. Alterations in spatial learning and memory, the gut microbiota, the intestinal barrier function, and the expression of glial fibrillary acidic protein (GFAP), lipopolysaccharide (LPS), and TNF-α were evaluated in each group. Results Compared with the C57BL/6 control (Cc) group, cognitive ability was significantly decreased, the gut microbiota structure was obviously disrupted, intestinal barrier integrity was drastically impaired, and the intestinal inflammatory response was enhanced in the APP/PS1 control (Ac) group (P < 0.01). These changes were reversed by MA and probiotics (P < 0.01 or P < 0.05), whereas antibiotics inhibited the benign regulation by MA (P < 0.01 or P < 0.05). Conclusion Manual acupuncture can benignly modulate gut microbiota dysbiosis, significantly reduce intestinal inflammation, and effectively alleviate the destruction of the intestinal mucosal barrier in APP/PS1 mice, and the effects are comparable to those of probiotics. The gut microbiota may play an important role in the improvement of the cognitive function and intestinal barrier function by MA.
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Affiliation(s)
- Xin Hao
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China
| | - Ning Ding
- Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yue Zhang
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China
| | - Yichen Yang
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China
| | - Yali Zhao
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China
| | - Jun Zhao
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China
| | - Yiran Li
- International School, Beijing University of Chinese Medicine, Beijing, China
| | - Zhigang Li
- School of Acupuncture, Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing, China
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16
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Li D, Ren T, Li H, Liao G, Zhang X. Porphyromonas gingivalis: A key role in Parkinson's disease with cognitive impairment? Front Neurol 2022; 13:945523. [PMID: 35959396 PMCID: PMC9363011 DOI: 10.3389/fneur.2022.945523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/04/2022] [Indexed: 11/15/2022] Open
Abstract
Cognitive impairment (CI) is a common complication of Parkinson's disease (PD). The major features of Parkinson's disease with cognitive impairment (PD-CI) include convergence of α-Synuclein (α-Syn) and Alzheimer's disease (AD)-like pathologies, neuroinflammation, and dysbiosis of gut microbiota. Porphyromonas gingivalis (P. gingivalis) is an important pathogen in periodontitis. Recent research has suggested a role of P. gingivalis and its virulence factor in the pathogenesis of PD and AD, in particular concerning neuroinflammation and deposition of α-Synuclein (α-Syn) and amyloid-β (Aβ). Furthermore, in animal models, oral P. gingivalis could cause neurodegeneration through regulating the gut-brain axis, suggesting an oral-gut-brain axis might exist. In this article, we discussed the pathological characteristics of PD-CI and the role of P. gingivalis in them.
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Affiliation(s)
- Dongcheng Li
- Department of Neurology, Affiliated Maoming People's Hospital, Southern Medical University, Maoming, China
| | - Tengzhu Ren
- Department of Neurology, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Hao Li
- Department of Neurology, Affiliated Maoming People's Hospital, Southern Medical University, Maoming, China
| | - Geng Liao
- Department of Neurology, Affiliated Maoming People's Hospital, Southern Medical University, Maoming, China
| | - Xiong Zhang
- Department of Neurology, Affiliated Maoming People's Hospital, Southern Medical University, Maoming, China
- *Correspondence: Xiong Zhang
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17
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Zhu M, Liu X, Ye Y, Yan X, Cheng Y, Zhao L, Chen F, Ling Z. Gut Microbiota: A Novel Therapeutic Target for Parkinson’s Disease. Front Immunol 2022; 13:937555. [PMID: 35812394 PMCID: PMC9263276 DOI: 10.3389/fimmu.2022.937555] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 05/26/2022] [Indexed: 12/16/2022] Open
Abstract
Parkinson’s disease (PD) is the second most common neurodegenerative disease characterized by motor dysfunction. Growing evidence has demonstrated that gut dysbiosis is involved in the occurrence, development and progression of PD. Numerous clinical trials have identified the characteristics of the changed gut microbiota profiles, and preclinical studies in PD animal models have indicated that gut dysbiosis can influence the progression and onset of PD via increasing intestinal permeability, aggravating neuroinflammation, aggregating abnormal levels of α-synuclein fibrils, increasing oxidative stress, and decreasing neurotransmitter production. The gut microbiota can be considered promising diagnostic and therapeutic targets for PD, which can be regulated by probiotics, psychobiotics, prebiotics, synbiotics, postbiotics, fecal microbiota transplantation, diet modifications, and Chinese medicine. This review summarizes the recent studies in PD-associated gut microbiota profiles and functions, the potential roles, and mechanisms of gut microbiota in PD, and gut microbiota-targeted interventions for PD. Deciphering the underlying roles and mechanisms of the PD-associated gut microbiota will help interpret the pathogenesis of PD from new perspectives and elucidate novel therapeutic strategies for PD.
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Affiliation(s)
- Manlian Zhu
- Department of Geriatrics, Lishui Second People’s Hospital, Lishui, China
| | - Xia Liu
- Department of Intensive Care Unit, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yiru Ye
- Department of Respiratory Medicine, Lishui Central Hospital, Lishui, China
| | - Xiumei Yan
- Department of Laboratory Medicine, Lishui Second People’s Hospital, Lishui, China
| | - Yiwen Cheng
- Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Longyou Zhao
- Department of Laboratory Medicine, Lishui Second People’s Hospital, Lishui, China
| | - Feng Chen
- Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- *Correspondence: Zongxin Ling, ; ; Feng Chen,
| | - Zongxin Ling
- Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- *Correspondence: Zongxin Ling, ; ; Feng Chen,
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18
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Selective Probiotic Treatment Positively Modulates the Microbiota-Gut-Brain Axis in the BTBR Mouse Model of Autism. Brain Sci 2022; 12:brainsci12060781. [PMID: 35741667 PMCID: PMC9220969 DOI: 10.3390/brainsci12060781] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/09/2022] [Accepted: 06/11/2022] [Indexed: 12/12/2022] Open
Abstract
Recent studies have shown promise for the use of probiotics in modulating behaviour through the microbiota–gut–brain axis. In the present study, we assessed the impact of two probiotic strains in mitigating autism-related symptomology in the BTBR T+ Itpr3tf/J mouse model of autism spectrum disorder (ASD). Male juvenile BTBR mice were randomized into: (1) control, (2) Lr probiotic (1 × 109 CFU/mL Lacticaseibacillus rhamnosus HA-114), and (3) Ls probiotic groups (1 × 109 CFU/mL Ligilactobacillus salivarius HA-118) (n = 18–21/group), receiving treatments in drinking water for 4 weeks. Gut microbiota profiling by 16S rRNA showed Lr, but not Ls supplementation, to increase microbial richness and phylogenetic diversity, with a rise in potential anti-inflammatory and butyrate-producing taxa. Assessing serum and brain metabolites, Lr and Ls supplementation produced distinct metabolic profiles, with Lr treatment elevating concentrations of potentially beneficial neuroactive compounds, such as 5-aminovaleric acid and choline. As mitochondrial dysfunction is often observed in ASD, we assessed mitochondrial oxygen consumption rates in the prefrontal cortex and hippocampus. No differences were observed for either treatment. Both Lr and Ls treatment reduced behavioural deficits in social novelty preference. However, no changes in hyperactivity, repetitive behaviour, and sociability were observed. Results show Lr to impart positive changes along the microbiota–gut–brain axis, exhibiting beneficial effects on selected behaviour, gut microbial diversity, and metabolism in BTBR mice.
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19
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Nafady MH, Sayed ZS, Abdelkawy DA, Shebl ME, Elsayed RA, Ashraf GM, Perveen A, Attia MS, Bahbah EI. The Effect of Gut Microbe Dysbiosis on the Pathogenesis of Alzheimer's Disease (AD) and related conditions. Curr Alzheimer Res 2022; 19:274-284. [PMID: 35440296 DOI: 10.2174/1567205019666220419101205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/17/2022] [Accepted: 03/09/2022] [Indexed: 11/22/2022]
Abstract
It has been hypothesized that the shift in gut microbiota composition, known as gut microbe dysbiosis, may be correlated with the onset of Alzheimer's disease (AD), which is the most common cause of dementia characterized by a gradual deterioration in cognitive function associated with the development of amyloid-beta (Aβ) plaques. The gut microbiota dysbiosis induces the release of significant amounts of amyloids, lipopolysaccharides, and neurotoxins, which might play a role in modulating signaling pathways and immune activation, leading to the production of proinflammatory cytokines related to the pathogenesis of AD. The dysbiosis of gut microbe is associated with various diseases such as type 2 diabetes, obesity, hypertension, and some neuropsychiatric disorders like depression, anxiety, and stress. It is conceivable that these diseases trigger the onset of AD. Thus, modifying the gut microbiota composition with probiotic and prebiotic supplementation can reduce depression and anxiety symptoms, lower stress reactivity, and improve memory. This narrative review aimed to examine the possible role of gut microbe dysbiosis in AD's pathogenesis.
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Affiliation(s)
- Mohamed H Nafady
- Radiological Imaging Technology Department, Faculty of Applied Medical Science, Misr university for science and technology (MUST), Cairo, Egypt.,Radiation Science Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Zeinab S Sayed
- Faculty of Applied Medical Science (AMS), Misr university for science and technology (MUST), Cairo, Egypt
| | - Dalia A Abdelkawy
- Faculty of Applied Medical Science (AMS), Misr university for science and technology (MUST), Cairo, Egypt
| | - Mostafa E Shebl
- Faculty of Applied Medical Science (AMS), Misr university for science and technology (MUST), Cairo, Egypt
| | - Reem A Elsayed
- Faculty of Applied Medical Science (AMS), Misr university for science and technology (MUST), Cairo, Egypt
| | - Ghulam Md Ashraf
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Asma Perveen
- Glocal School of Life Sciences, Glocal University, Mirzapur Pole, Saharanpur, Uttar Pradesh, India
| | - Mohamed S Attia
- Department of Pharmaceutics, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Eshak I Bahbah
- Faculty of Medicine, Al-Azhar University, Damietta, Egypt.,Medical Research Group of Egypt (MRGE), Cairo, Egypt.,SevoClin Research Group, Cairo, Egypt
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20
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Sayehmiri F, Samadian M, Mohamadkhani A, Tafakhori A, Haghighat S, Rahmatian A, Mohammadkhani MA, Fazli HR, Rezaei Tavirani M. Gut Microbiota Modification via Glucagon-like Peptide-1 with Beneficial Neuroprotective Effects. Middle East J Dig Dis 2022; 14:235-243. [PMID: 36619150 PMCID: PMC9489313 DOI: 10.34172/mejdd.2022.278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 03/17/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND: In recent decades, it has been shown that the association between intestinal bacterial imbalance (dysbiosis) and various diseases such as type 2 diabetes can play a role in the development of Alzheimer's and Parkinson's diseases. In this study, the beneficial effects of intestinal microbiota glucagon-like peptide 1 (GLP-1) in cognitive disorders were investigated. METHODS: PubMed-Medline, Web of Science, and Scopus were searched to identify experimental studies based on the bacterial strains along with GLP-1 1 expression in preventing or reducing cognitive impairment. Of the 233 studies, six were eligible for inclusion, and the Systematic Review Centre for Laboratory animal Experimentation (SYRCLE) risk of bias tool was used to evaluate the risk of bias in individual studies. RESULTS: The results showed that intestinal expression of GLP-1 1 could reduce the intestinal pathogenic genus such as Enterobacteriaceae and was obviously associated with a greater number of beneficial genera such as Lactobacillus and Akkermansia. Also, the neuroprotective effects of Clostridium butyricum with GLP-1 1 in a mice were approved. Therefore, the modulation of the intestinal microbiota, mediated by an increase in the intestinal GLP-1 1 level, consequently improved cognitive function. CONCLUSION: In this review, we have indicated that the gut microbiota, by stimulating the expression of the intestinal hormones like GLP-1 1, and also with a beneficial effect in inhibiting some involved genes in inflammation, can declined the development of cognitive disorders.
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Affiliation(s)
- Fatemeh Sayehmiri
- Student Research Committee, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Samadian
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ashraf Mohamadkhani
- Liver and Pancreatobiliary Diseases Research Center, Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Abbas Tafakhori
- Associate Professor of Neurology, Iranian Center of Neurological Science; Tehran University of Medical Sciences; Tehran, Iran
| | - Somayeh Haghighat
- Physiology Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - Aryoobarzan Rahmatian
- Faculty of Medicine, Department of neurology, Ilam University of medical science, Ilam, Iran
| | | | - Hamid Reza Fazli
- Liver and Pancreatobiliary Diseases Research Center, Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mostafa Rezaei Tavirani
- Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran,Corresponding Author: Mostafa Rezaei Tavirani, Ph.D Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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21
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Commensal and Pathogenic Bacterial-Derived Extracellular Vesicles in Host-Bacterial and Interbacterial Dialogues: Two Sides of the Same Coin. J Immunol Res 2022; 2022:8092170. [PMID: 35224113 PMCID: PMC8872691 DOI: 10.1155/2022/8092170] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 01/17/2022] [Accepted: 02/01/2022] [Indexed: 12/11/2022] Open
Abstract
Extracellular vesicles (EVs) cause effective changes in various domains of life. These bioactive structures are essential to the bidirectional organ communication. Recently, increasing research attention has been paid to EVs derived from commensal and pathogenic bacteria in their potential role to affect human disease risk for cancers and a variety of metabolic, gastrointestinal, psychiatric, and mental disorders. The present review presents an overview of both the protective and harmful roles of commensal and pathogenic bacteria-derived EVs in host-bacterial and interbacterial interactions. Bacterial EVs could impact upon human health by regulating microbiota–host crosstalk intestinal homeostasis, even in distal organs. The importance of vesicles derived from bacteria has been also evaluated regarding epigenetic modifications and applications. Generally, the evaluation of bacterial EVs is important towards finding efficient strategies for the prevention and treatment of various human diseases and maintaining metabolic homeostasis.
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22
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Carloni S, Rescigno M. Unveiling the gut-brain axis: structural and functional analogies between the gut and the choroid plexus vascular and immune barriers. Semin Immunopathol 2022; 44:869-882. [PMID: 35861857 PMCID: PMC9301898 DOI: 10.1007/s00281-022-00955-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 06/14/2022] [Indexed: 02/07/2023]
Abstract
The vasculature plays an essential role in the development and maintenance of blood-tissue interface homeostasis. Knowledge on the morphological and functional nature of the blood vessels in every single tissue is, however, very poor, but it is becoming clear that each organ is characterized by the presence of endothelial barriers with different properties fundamental for the maintenance of tissue resident immune homeostasis and for the recruitment of blood-trafficking immune cells. The tissue specificity of the vascular unit is dependent on the presence of differentiated endothelial cells that form continues, fenestrated, or sinusoidal vessels with different grades of permeability and different immune receptors, according to how that particular tissue needs to be protected. The gut-brain axis highlights the prominent role that the vasculature plays in allowing a direct and prompt exchange of molecules between the gut, across the gut vascular barrier (GVB), and the brain. Recently, we identified a new choroid plexus vascular barrier (PVB) which receives and integrates information coming from the gut and is fundamental in the modulation of the gut-brain axis. Several pathologies are linked to functional dysregulation of either the gut or the choroid plexus vascular barriers. In this review, we unveil the structural and functional analogies between the GVB and PVB, comparing their peculiar features and highlighting the functional role of pitcher and catcher of the gut-brain axis, including their role in the establishment of immune homeostasis and response upon systemic stimuli. We propose that when the gut vascular barrier-the main protecting system of the body from the external world-is compromised, the choroid plexus gatekeeper becomes a second barrier that protects the central nervous system from systemic inflammation.
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Affiliation(s)
- Sara Carloni
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini, 20072, Pieve Emanuele, MI, Italy.
- IRCCS Humanitas Research Hospital, Via Manzoni 56, 20089, Rozzano, MI, Italy.
| | - Maria Rescigno
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini, 20072, Pieve Emanuele, MI, Italy.
- IRCCS Humanitas Research Hospital, Via Manzoni 56, 20089, Rozzano, MI, Italy.
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23
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Affiliation(s)
- Yong-Ku Kim
- Department of Psychiatry, Korea University College of Medicine, Korea University Ansan Hospital, Ansan city, Republic of Korea.
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Danilenko V, Devyatkin A, Marsova M, Shibilova M, Ilyasov R, Shmyrev V. Common Inflammatory Mechanisms in COVID-19 and Parkinson's Diseases: The Role of Microbiome, Pharmabiotics and Postbiotics in Their Prevention. J Inflamm Res 2021; 14:6349-6381. [PMID: 34876830 PMCID: PMC8643201 DOI: 10.2147/jir.s333887] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 10/29/2021] [Indexed: 12/14/2022] Open
Abstract
In the last decade, metagenomic studies have shown the key role of the gut microbiome in maintaining immune and neuroendocrine systems. Malfunction of the gut microbiome can induce inflammatory processes, oxidative stress, and cytokine storm. Dysfunction of the gut microbiome can be caused by short-term (virus infection and other infectious diseases) or long-term (environment, nutrition, and stress) factors. Here, we reviewed the inflammation and oxidative stress in neurodegenerative diseases and coronavirus infection (COVID-19). Here, we reviewed the renin-angiotensin-aldosterone system (RAAS) involved in the processes of formation of oxidative stress and inflammation in viral and neurodegenerative diseases. Moreover, the coronavirus uses ACE2 receptors of the RAAS to penetrate human cells. The coronavirus infection can be the trigger for neurodegenerative diseases by dysfunction of the RAAS. Pharmabiotics, postbiotics, and next-generation probiotics, are considered as a means to prevent oxidative stress, inflammatory processes, neurodegenerative and viral diseases through gut microbiome regulation.
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Affiliation(s)
- Valery Danilenko
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia
| | - Andrey Devyatkin
- Central Clinical Hospital with a Polyclinic CMP RF, Moscow, Russia
| | - Mariya Marsova
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia
| | | | - Rustem Ilyasov
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia
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25
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Doenyas C. Potential Role of Epigenetics and Redox Signaling in the Gut-Brain Communication and the Case of Autism Spectrum Disorder. Cell Mol Neurobiol 2021; 42:483-487. [PMID: 34773541 DOI: 10.1007/s10571-021-01167-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 11/01/2021] [Indexed: 12/11/2022]
Abstract
The gut-brain axis refers to the bidirectional connection and communication between the gastrointestinal tract and the central nervous system. This paper explores two routes for this communication that have hitherto remained under-examined: epigenetics and redox signaling and their implications for autism spectrum disorder (ASD). The gut microbiota may induce epigenetic changes in the gut and potentially in the brain through their fermentation products. Instead of through other conceptualizations of them acting as neurotransmitters, gut microbial products may act as epigenetic agents, which are supported by the effects of gut bacterial-derived metabolites on gene regulation and expression. In addition to their epigenetic effects, gut bacterial-derived communicative agents can also influence host signaling by contributing to and even substituting host reactive oxygen species (ROS) production. These ROS can act as second messengers and exert oxidative activity on proteins to influence immune, inflammatory, and other signaling processes. ROS and epigenetic mechanisms may have interactive effects as well. ROS, in addition to their role in signaling pathways and cellular redox alterations, also influence redox-sensitive transcription factors, thereby having an effect on gene expression. Specifically, ROS are involved in the activation of transcription factors, chromatin remodeling, and histone/protein deacetylation. These two proposed mechanisms correspond with the recent findings related to ASD, where a cofactor that is shown to be lower in ASD has antioxidative properties, responds to epigenetic modulation, and increases via microbiota interventions. The current evidence reviewed here suggests the need to update models of the gut-brain communication to include these two mechanisms. Such a modeling can also contribute to understanding the unknowns of host metabolism and physiology in ASD and afford potential therapeutic avenues for this as well as other psychiatric and physiological conditions.
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26
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Suslov AV, Chairkina E, Shepetovskaya MD, Suslova IS, Khotina VA, Kirichenko TV, Postnov AY. The Neuroimmune Role of Intestinal Microbiota in the Pathogenesis of Cardiovascular Disease. J Clin Med 2021; 10:1995. [PMID: 34066528 PMCID: PMC8124579 DOI: 10.3390/jcm10091995] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/19/2021] [Accepted: 05/03/2021] [Indexed: 02/07/2023] Open
Abstract
Currently, a bidirectional relationship between the gut microbiota and the nervous system, which is considered as microbiota-gut-brain axis, is being actively studied. This axis is believed to be a key mechanism in the formation of somatovisceral functions in the human body. The gut microbiota determines the level of activation of the hypothalamic-pituitary system. In particular, the intestinal microbiota is an important source of neuroimmune mediators in the pathogenesis of cardiovascular disease. This review reflects the current state of publications in PubMed and Scopus databases until December 2020 on the mechanisms of formation and participation of neuroimmune mediators associated with gut microbiota in the development of cardiovascular disease.
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Affiliation(s)
- Andrey V. Suslov
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia, 8-2 Trubetskaya Str., 119992 Moscow, Russia; (A.V.S.); (E.C.); (M.D.S.)
| | - Elizaveta Chairkina
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia, 8-2 Trubetskaya Str., 119992 Moscow, Russia; (A.V.S.); (E.C.); (M.D.S.)
| | - Maria D. Shepetovskaya
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia, 8-2 Trubetskaya Str., 119992 Moscow, Russia; (A.V.S.); (E.C.); (M.D.S.)
| | - Irina S. Suslova
- Central State Medical Academy of the Administrative Department of the President of the Russian Federation, 19-1A Marshal Timoshenko Str., 121359 Moscow, Russia;
| | - Victoria A. Khotina
- Research Institute of Human Morphology, 3 Tsyurupy Str., 117418 Moscow, Russia; (V.A.K.); (A.Y.P.)
- Institute of General Pathology and Pathophysiology, 8 Baltiyskaya Str., 125315 Moscow, Russia
| | - Tatiana V. Kirichenko
- Research Institute of Human Morphology, 3 Tsyurupy Str., 117418 Moscow, Russia; (V.A.K.); (A.Y.P.)
- National Medical Research Center of Cardiology, 15A 3-rd Cherepkovskaya Str., 121552 Moscow, Russia
| | - Anton Y. Postnov
- Research Institute of Human Morphology, 3 Tsyurupy Str., 117418 Moscow, Russia; (V.A.K.); (A.Y.P.)
- National Medical Research Center of Cardiology, 15A 3-rd Cherepkovskaya Str., 121552 Moscow, Russia
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27
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Gastrointestinal dysfunction in Parkinson's disease: molecular pathology and implications of gut microbiome, probiotics, and fecal microbiota transplantation. J Neurol 2021; 269:1154-1163. [PMID: 33881598 DOI: 10.1007/s00415-021-10567-w] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 04/12/2021] [Accepted: 04/15/2021] [Indexed: 12/23/2022]
Abstract
Gastrointestinal symptoms and gut dysbiosis may occur before the onset of motor symptoms in Parkinson's disease (PD). Prediagnostic and prodromal features, such as constipation and α-synuclein pathology, can be detected several years before the clinical diagnosis of PD and have the potential to develop as early PD biomarkers. Environmental toxins and gut dysbiosis may trigger oxidative stress and mucosal inflammation, and initiate α-synuclein accumulation in the enteric nervous system, early in PD. Chronic gut inflammation can lead to a leaky gut and systemic inflammation, neuro inflammation, and neuro degeneration via gut-vagus-brain signaling or through blood-brain barrier permeability. Concepts regarding the gut-brain signaling in PD pathogenesis are changing rapidly and more investigation is required. The gut microbiota interacts with the human body by modulating the enteric and central nervous systems, and immune activity. Understanding the immune responses between gut microbiota and human body might help in elucidating the PD pathogenesis. As changes in gut microbiota composition might be associated with different clinical phenotypes of PD, gut microbiota-modulating interventions, such as probiotics and fecal microbiota transplantation (FMT), have the potential to restore the gut dysbiosis, reduce inflammation, and possibly modulate the clinical PD phenotype.
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28
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Polster A, Öhman L, Tap J, Derrien M, Le Nevé B, Sundin J, Törnblom H, Cvijovic M, Simrén M. A novel stepwise integrative analysis pipeline reveals distinct microbiota-host interactions and link to symptoms in irritable bowel syndrome. Sci Rep 2021; 11:5521. [PMID: 33750831 PMCID: PMC7943560 DOI: 10.1038/s41598-021-84686-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 02/15/2021] [Indexed: 12/15/2022] Open
Abstract
Although incompletely understood, microbiota-host interactions are assumed to be altered in irritable bowel syndrome (IBS). We, therefore, aimed to develop a novel analysis pipeline tailored for the integrative analysis of microbiota-host interactions and association to symptoms and prove its utility in a pilot cohort. A multilayer stepwise integrative analysis pipeline was developed to visualize complex variable associations. Application of the pipeline was demonstrated on a dataset of IBS patients and healthy controls (HC), using the R software package to analyze colonic host mRNA and mucosal microbiota (16S rRNA gene sequencing), as well as gastrointestinal (GI) and psychological symptoms. In total, 42 IBS patients (57% female, mean age 33.6 (range 18–58)) and 20 HC (60% female, mean age 26.8 (range 23–41)) were included. Only in IBS patients, mRNA expression of Toll-like receptor 4 and genes associated with barrier function (PAR2, OCLN, TJP1) intercorrelated closely, suggesting potential functional relationships. This host genes-based “permeability cluster” was associated to mucosa-adjacent Chlamydiae and Lentisphaerae, and furthermore associated to satiety as well as to anxiety, depression and fatigue. In both IBS patients and HC, chromogranins, secretogranins and TLRs clustered together. In IBS patients, this host genes-based “immune-enteroendocrine cluster” was associated to specific members of Firmicutes, and to depression and fatigue, whereas in HC no significant association to microbiota was identified. We have developed a stepwise integrative analysis pipeline that allowed identification of unique host-microbiota intercorrelation patterns and association to symptoms in IBS patients. This analysis pipeline may aid in advancing the understanding of complex variable associations in health and disease.
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Affiliation(s)
- Annikka Polster
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska University Hospital, Sahlgrenska Academy, University of Gothenburg, 41345, Göteborg, Sweden.
| | - Lena Öhman
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska University Hospital, Sahlgrenska Academy, University of Gothenburg, 41345, Göteborg, Sweden.,Department of Microbiology and Immunology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
| | - Julien Tap
- Danone Nutricia Research, Palaiseau, France
| | | | | | - Johanna Sundin
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska University Hospital, Sahlgrenska Academy, University of Gothenburg, 41345, Göteborg, Sweden.,Department of Microbiology and Immunology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
| | - Hans Törnblom
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska University Hospital, Sahlgrenska Academy, University of Gothenburg, 41345, Göteborg, Sweden
| | - Marija Cvijovic
- Department of Mathematical Sciences, Chalmers University of Technology and University of Gothenburg, Göteborg, Sweden
| | - Magnus Simrén
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska University Hospital, Sahlgrenska Academy, University of Gothenburg, 41345, Göteborg, Sweden.,Center for Functional Gastrointestinal and Motility Disorders, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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29
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Mölzer C, Heissigerova J, Wilson HM, Kuffova L, Forrester JV. Immune Privilege: The Microbiome and Uveitis. Front Immunol 2021; 11:608377. [PMID: 33569055 PMCID: PMC7868421 DOI: 10.3389/fimmu.2020.608377] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 12/04/2020] [Indexed: 02/03/2023] Open
Abstract
Immune privilege (IP), a term introduced to explain the unpredicted acceptance of allogeneic grafts by the eye and the brain, is considered a unique property of these tissues. However, immune responses are modified by the tissue in which they occur, most of which possess IP to some degree. The eye therefore displays a spectrum of IP because it comprises several tissues. IP as originally conceived can only apply to the retina as it contains few tissue-resident bone-marrow derived myeloid cells and is immunologically shielded by a sophisticated barrier – an inner vascular and an outer epithelial barrier at the retinal pigment epithelium. The vascular barrier comprises the vascular endothelium and the glia limitans. Immune cells do not cross the blood-retinal barrier (BRB) despite two-way transport of interstitial fluid, governed by tissue oncotic pressure. The BRB, and the blood-brain barrier (BBB) mature in the neonatal period under signals from the expanding microbiome and by 18 months are fully established. However, the adult eye is susceptible to intraocular inflammation (uveitis; frequency ~200/100,000 population). Uveitis involving the retinal parenchyma (posterior uveitis, PU) breaches IP, while IP is essentially irrelevant in inflammation involving the ocular chambers, uveal tract and ocular coats (anterior/intermediate uveitis/sclerouveitis, AU). Infections cause ~50% cases of AU and PU but infection may also underlie the pathogenesis of immune-mediated “non-infectious” uveitis. Dysbiosis accompanies the commonest form, HLA-B27–associated AU, while latent infections underlie BRB breakdown in PU. This review considers the pathogenesis of uveitis in the context of IP, infection, environment, and the microbiome.
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Affiliation(s)
- Christine Mölzer
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom
| | - Jarmila Heissigerova
- Department of Ophthalmology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czechia
| | - Heather M Wilson
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom
| | - Lucia Kuffova
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom.,Eye Clinic, Aberdeen Royal Infirmary, Aberdeen, United Kingdom
| | - John V Forrester
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom
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30
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Kaur G, Behl T, Bungau S, Kumar A, Uddin MS, Mehta V, Zengin G, Mathew B, Shah MA, Arora S. Dysregulation of the Gut-Brain Axis, Dysbiosis and Influence of Numerous Factors on Gut Microbiota Associated Parkinson's Disease. Curr Neuropharmacol 2021; 19:233-247. [PMID: 32504503 PMCID: PMC8033978 DOI: 10.2174/1570159x18666200606233050] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/27/2020] [Accepted: 06/02/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Parkinson's disease (PD) has been one of the substantial social, medical concerns and, burdens of the present time. PD is a gradually devastating neurodegenerative disorder of the neurological function marked with α-synucleinopathy affecting numerous regions of the brain-gut axis, as well as the central, enteric, and autonomic nervous system. Its etiology is a widely disputed topic. OBJECTIVE This review emphasizes to find out the correlation among the microbial composition and the observable disturbances in the metabolites of the microbial species and its impact on the immune response, which may have a concrete implication on the occurrence, persistence and, pathophysiology of PD via the gut-brain axis. METHODS An in-depth research and the database was developed from the available peer-reviewed articles to date (March 2020) utilizing numerous search engines like PubMed, MEDLINE and, other internet sources. RESULTS Progressively increasing shreds of evidence have proved the fact that dysbiosis in the gut microbiome plays a central role in many neurological disorders, such as PD. Indeed, a disordered microbiome-gut-brain axis in PD could be focused on gastrointestinal afflictions that manifest primarily several years prior to the diagnosis, authenticating a concept wherein the pathological pathway progresses from the intestine reaching the brain. CONCLUSION The microbiota greatly affects the bidirectional interaction between the brain and the gut via synchronized neurological, immunological, and neuroendocrine mechanisms. It can be concluded that a multitude of factors discussed in this review steadily induce the onset of dysbacteriosis that may exacerbate the etiologic mechanism of Parkinson's disease.
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Affiliation(s)
| | - Tapan Behl
- Address correspondence to this author at the Chitkara College of Pharmacy, Chitkara University, Punjab, India; Tel: +91-8527517931;, E-mails: ;
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31
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Severity of Experimental Autoimmune Uveitis Is Reduced by Pretreatment with Live Probiotic Escherichia coli Nissle 1917. Cells 2020; 10:cells10010023. [PMID: 33375578 PMCID: PMC7823395 DOI: 10.3390/cells10010023] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 12/16/2020] [Accepted: 12/22/2020] [Indexed: 02/07/2023] Open
Abstract
Non-infectious uveitis is considered an autoimmune disease responsible for a significant burden of blindness in developed countries and recent studies have linked its pathogenesis to dysregulation of the gut microbiota. We tested the immunomodulatory properties of two probiotics, Escherichia coli Nissle 1917 (EcN) and E. coli O83:K24:H31 (EcO), in a model of experimental autoimmune uveitis (EAU). To determine the importance of bacterial viability and treatment timing, mice were orally treated with live or autoclaved bacteria in both preventive and therapeutic schedules. Disease severity was assessed by ophthalmoscopy and histology, immune phenotypes in mesenteric and cervical lymph nodes were analyzed by flow cytometry and the gut immune environment was analyzed by RT-PCR and/or gut tissue culture. EcN, but not EcO, protected against EAU but only as a live organism and only when administered before or at the time of disease induction. Successful prevention of EAU was accompanied by a decrease in IRBP-specific T cell response in the lymph nodes draining the site of immunization as early as 7 days after the immunization and eye-draining cervical lymph nodes when the eye inflammation became apparent. Furthermore, EcN promoted an anti-inflammatory response in Peyer’s patches, increased gut antimicrobial peptide expression and decreased production of inducible nitric oxide synthase in macrophages. In summary, we show here that EcN controls inflammation in EAU and suggest that probiotics may have a role in regulating the gut–eye axis.
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32
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Bacterially Derived Tryptamine Increases Mucus Release by Activating a Host Receptor in a Mouse Model of Inflammatory Bowel Disease. iScience 2020; 23:101798. [PMID: 33299969 PMCID: PMC7702010 DOI: 10.1016/j.isci.2020.101798] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 09/17/2020] [Accepted: 11/10/2020] [Indexed: 12/22/2022] Open
Abstract
Recent studies emphasize the role of microbial metabolites in regulating gastrointestinal (GI) physiology through activation of host receptors, highlighting the potential for inter-kingdom signaling in treating GI disorders. In this study, we show that tryptamine, a tryptophan-derived bacterial metabolite, stimulates mucus release from goblet cells via activation of G-protein-coupled receptor (GPCR) 5-HT4R. Germ-free mice colonized with engineered Bacteroides thetaiotaomicron optimized to produce tryptamine (Trp D+) exhibit decreased weight loss and increased mucus release following dextran sodium sulfate treatment when compared with mice colonized with control B. thetaiotaomicron (Trp D-). Additional beneficial effects in preventing barrier disruption and lower disease activity index were seen only in female mice, highlighting sex-specific effects of the bacterial metabolite. This study demonstrates potential for the precise modulation of mucus release by microbially produced 5-HT4 GPCR agonist as a therapeutic strategy to treat inflammatory conditions of the GI tract.
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33
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Affiliation(s)
- Yogesh Bhattarai
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Purna C. Kashyap
- Enteric Neuroscience Program, Mayo Clinic, Rochester, Minnesota
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
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34
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Mehranfard N, Yazdi A, Sardooi AR, Shakerin Z, Ghasemi M. Honey protects against chronic unpredictable mild stress induced- intestinal barrier disintegration and hepatic inflammation. Mol Biol Rep 2020; 47:8475-8484. [PMID: 33047241 DOI: 10.1007/s11033-020-05888-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 09/30/2020] [Indexed: 01/19/2023]
Abstract
Chronic stress is linked to liver injury by increasing intestinal permeability to lipopolysaccharide (LPS), which in turn can result in systemic and liver inflammation and damage. Beneficial effect of honey in the prevention of liver injury has been shown in previous studies, but mechanisms underlying are still less known. Here, we examined the therapeutic impacts of honey on intestinal nuclear factor-κB (NF-κB; an important regulator of stress-induced immune and inflammatory responses) and ileal tight junction (TJ) proteins of claudin-1 and ZO-1, serum LPS, liver inflammation and oxidative markers of malondialdehyde (MDA), nitric oxide (NO), (erythroid-derived 2)-like 2 (Nrf2), tumor necrosis factor (TNF)-α and total antioxidant capacity (TAC) following chronic unpredictable mild stress (CUMS) using Western blotting, ELISA kit and spectrophotometry. Male rats were subjected to CUMS for 28 consecutive days. Honey (0.2 and 2 g/kg/day, by gavage) was administered pretreatment (10 days) and during stress. Honey reduced stress-induced LPS elevation by preventing reduction in the intestinal TJ proteins of claudin-1 and ZO-1, while did not affect NF-kB levels. In liver, honey significantly suppressed stress-induced increase in MDA, NO, TNF-α and Nrf2 expression and normalized TAC. Noteworthy, honey high-dose provoked a greater decrease in TNF-α, Nrf2 and LPS levels than honey low-dose. Together, our study indicated that honey protects against stress-induced liver damage by modulating at least two pathways; intestinal barrier protection via increased TJ protein complex expression, and hepatic TAC protection that may be involved in the inhibition of MDA, NO, TNF-α and Nrf2 expression.
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Affiliation(s)
- Nasrin Mehranfard
- Neurophysiology Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Azadeh Yazdi
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Asiye Rafiee Sardooi
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Zeinab Shakerin
- PhD of Anatomical Science, Department of Anatomy, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Maedeh Ghasemi
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
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35
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Tang W, Zhu H, Feng Y, Guo R, Wan D. The Impact of Gut Microbiota Disorders on the Blood-Brain Barrier. Infect Drug Resist 2020; 13:3351-3363. [PMID: 33061482 PMCID: PMC7532923 DOI: 10.2147/idr.s254403] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 08/30/2020] [Indexed: 12/14/2022] Open
Abstract
The gut microbiota is symbiotic with the human host and has been extensively studied in recent years resulting in increasing awareness of the effects of the gut microbiota on human health. In this review, we summarize the current evidence for the effects of gut microbes on the integrity of the cerebral blood-brain barrier (BBB), focusing on the pathogenic impact of gut microbiota disorders. Based on our description and summarization of the effects of the gut microbiota and its metabolites on the nervous, endocrine, and immune systems and related signaling pathways and the resulting destruction of the BBB, we suggest that regulating and supplementing the intestinal microbiota as well as targeting immune cells and inflammatory mediators are required to protect the BBB.
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Affiliation(s)
- Wei Tang
- Department of Emergency & Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Huifeng Zhu
- College of Pharmaceutical Sciences & Chinese Medicine, Southwest University, Chongqing 400716, People's Republic of China
| | - Yanmei Feng
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Rui Guo
- Department of Emergency & Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Dong Wan
- Department of Emergency & Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
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36
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Zhang Y, Wu Q, Zhou M, Luo Z, Lv L, Pei J, Wang C, Chai B, Sui B, Huang F, Fu ZF, Zhao L. Composition of the murine gut microbiome impacts humoral immunity induced by rabies vaccines. Clin Transl Med 2020; 10:e161. [PMID: 32898335 PMCID: PMC7443138 DOI: 10.1002/ctm2.161] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/12/2020] [Accepted: 08/12/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Gut microbiome plays a crucial role in modulating human and animal immune responses. Rabies is a fatal zoonosis causing encephalitis in mammals and vaccination is the most effective method to control and eliminate rabies. The relationship between the gut microbiome and humoral immunity post rabies vaccination has not been investigated yet. METHODS Mice orally administrated with a cocktail of broad-spectrum antibiotics were inoculated with rabies vaccines, and humoral immune response was analyzed at indicated time points. The 16S ribosomal RNA (16S rRNA) gene sequencing was performed on fecal samples from groups in vancomycin-treated and untreated mice. Mice were immunized with rabies vaccines and virus-neutralizing antibody (VNA) levels were measured, resulting in VNA high (H) and low (L) groups. Then 16S rRNA gene sequencing was performed on fecal samples from H and L group mice. RESULTS After antibiotic (Abx) treatment, mice had decreased levels of rabies virus (RABV)-specific IgM, IgG, and virus-neutralizing antibody compared with untreated mice. Abx-treated mice had fewer T follicular helper cells, germinal center B cells, and antibody secreting cells (ASCs) in lymph nodes than did untreated mice. Gut microbiome facilitated secondary immune responses by increasing the generation of ASCs. Treatment with vancomycin alone had a similarly impaired effect on the humoral immune responses compared with Abx-treated mice. From the natural population group of mice received rabies vaccines, VNA titers vary significantly and the abundance of Clostridiales and Lachnospiraceae was positively associated with the antibody titers in mice. CONCLUSIONS Our results provide the evidence that the gut microbiome impacts humoral immunity post rabies vaccination, and further investigation of the mechanism will help the development of novel adjuvants and vaccines.
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Affiliation(s)
- Yachun Zhang
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Preventive Veterinary Medicine of Hubei ProvinceCollege of Veterinary MedicineHuazhong Agricultural UniversityWuhanChina
| | - Qiong Wu
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Preventive Veterinary Medicine of Hubei ProvinceCollege of Veterinary MedicineHuazhong Agricultural UniversityWuhanChina
| | - Ming Zhou
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Preventive Veterinary Medicine of Hubei ProvinceCollege of Veterinary MedicineHuazhong Agricultural UniversityWuhanChina
| | - Zhaochen Luo
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Preventive Veterinary Medicine of Hubei ProvinceCollege of Veterinary MedicineHuazhong Agricultural UniversityWuhanChina
| | - Lei Lv
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Preventive Veterinary Medicine of Hubei ProvinceCollege of Veterinary MedicineHuazhong Agricultural UniversityWuhanChina
| | - Jie Pei
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Preventive Veterinary Medicine of Hubei ProvinceCollege of Veterinary MedicineHuazhong Agricultural UniversityWuhanChina
| | - Caiqian Wang
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Preventive Veterinary Medicine of Hubei ProvinceCollege of Veterinary MedicineHuazhong Agricultural UniversityWuhanChina
| | - Benjie Chai
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Preventive Veterinary Medicine of Hubei ProvinceCollege of Veterinary MedicineHuazhong Agricultural UniversityWuhanChina
| | - Baokun Sui
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Preventive Veterinary Medicine of Hubei ProvinceCollege of Veterinary MedicineHuazhong Agricultural UniversityWuhanChina
| | - Fei Huang
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Preventive Veterinary Medicine of Hubei ProvinceCollege of Veterinary MedicineHuazhong Agricultural UniversityWuhanChina
| | - Zhen F. Fu
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Preventive Veterinary Medicine of Hubei ProvinceCollege of Veterinary MedicineHuazhong Agricultural UniversityWuhanChina
| | - Ling Zhao
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Preventive Veterinary Medicine of Hubei ProvinceCollege of Veterinary MedicineHuazhong Agricultural UniversityWuhanChina
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37
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Harsanyiova J, Buday T, Kralova Trancikova A. Parkinson's Disease and the Gut: Future Perspectives for Early Diagnosis. Front Neurosci 2020; 14:626. [PMID: 32625058 PMCID: PMC7313629 DOI: 10.3389/fnins.2020.00626] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 05/19/2020] [Indexed: 12/11/2022] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disease characterized by progressive degeneration of dopaminergic neurons, and at the cellular level by the formation of Lewy bodies in the central nervous system (CNS). However, the onset of the disease is believed to be localized to peripheral organs, particularly the gastrointestinal tract (GIT) and the olfactory bulb sooner before neuropathological changes occur in the CNS. Patients already in the pre-motor stage of PD suffer from various digestive problems and/or due to significant changes in the composition of the intestinal microbiome in this early stage of the disease. Detailed analyses of patient biopsies and autopsies as well as animal models of neuropathological changes characteristic of PD provided important information on the pathology or treatment of PD symptoms. However, presently is not clarified (i) the specific tissue in the GIT where the pathological processes associated with PD is initiated; (ii) the mechanism by which these processes are disseminated to the CNS or other tissues within the GIT; and (iii) which neuropathological changes could also serve as a reliable diagnostic marker of the premotor stages of PD, or (iv) which type of GIT tissue would be the most appropriate choice for routine examination of patient biopsies.
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Affiliation(s)
- Jana Harsanyiova
- Departmet of Pahophysiology, Jessenius Faculty of Medicine in Martin, Comenius University, Bratislava, Slovakia
| | - Tomas Buday
- Departmet of Pahophysiology, Jessenius Faculty of Medicine in Martin, Comenius University, Bratislava, Slovakia
| | - Alzbeta Kralova Trancikova
- Biomedical Center Martin, Jessenius Faculty of Medicine in Martin, Comenius University, Bratislava, Slovakia
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38
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Du Y, Gao XR, Peng L, Ge JF. Crosstalk between the microbiota-gut-brain axis and depression. Heliyon 2020; 6:e04097. [PMID: 32529075 PMCID: PMC7276434 DOI: 10.1016/j.heliyon.2020.e04097] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/06/2019] [Accepted: 05/26/2020] [Indexed: 02/07/2023] Open
Abstract
Nutritional and microbiological psychiatry, especially the contribution of the gut microbiota to depression, has become a promising research field over the past several decades. An imbalance in the "microbiota-gut-brain axis", which reflects the constant bidirectional communication between the central nervous system and the gastrointestinal tract, has been used as a hypothesis to interpret the pathogenesis of depression. Alterations in gut microbiota composition could increase the permeability of the gut barrier, activate systemic inflammation and immune responses, regulate the release and efficacy of monoamine neurotransmitters, alter the activity and function of the hypothalamic-pituitary-adrenal (HPA) axis, and modify the abundance of brain-derived neurotrophic factor (BDNF), eventually leading to depression. In this article, we review changes in gut microbiota in depressive states, the association between these changes and depression-like behavior, the potential mechanism linking gut microbiota disruptions and depression, and preliminary attempts at using gut microbiota intervention for the treatment of depression. In summary, although the link between gut microbiota and depression and the potential mechanism have been discussed, a more detailed mechanistic understanding is needed to fully realize the importance of the microbiota-gut-brain axis in depression. Future efforts should aim to determine the potential causative mechanisms, which will require further animal and clinical research as well as the development of analytical approaches.
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Affiliation(s)
- Yu Du
- School of Pharmacy, Anhui Medical University, Hefei, China
| | - Xin-Ran Gao
- School of Pharmacy, Anhui Medical University, Hefei, China.,Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Hefei, China.,The Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Medical University, Hefei, China
| | - Lei Peng
- School of Pharmacy, Anhui Medical University, Hefei, China.,Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Hefei, China.,The Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Medical University, Hefei, China
| | - Jin-Fang Ge
- School of Pharmacy, Anhui Medical University, Hefei, China.,Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, Hefei, China.,The Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Medical University, Hefei, China
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39
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Li R, Li Y, Li C, Zheng D, Chen P. Gut Microbiota and Endocrine Disorder. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1238:143-164. [DOI: 10.1007/978-981-15-2385-4_9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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40
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Identification of plasmalogens in Bifidobacterium longum, but not in Bifidobacterium animalis. Sci Rep 2020; 10:427. [PMID: 31949186 PMCID: PMC6965078 DOI: 10.1038/s41598-019-57309-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 12/27/2019] [Indexed: 01/01/2023] Open
Abstract
Plasmalogens are glycerophospholipids that contain a vinyl ether bond at the sn-1 position of glycerol backbone instead of an ester bond. Plasmalogens are indicated to have many important functions in mammalian cells. On the other hand, it is suggested that some gut microbiota plays many probiotic functions to human health. Presence of plasmalogens in Clostridium strains in gut microbiota is well-known, but presence of plasmalogens in Bifidobacterium longum (B. longum) strain, one of the most important probiotic gut microbiota, has not been reported. We identified plasmalogens in lipid extract from some B. longum species, but not from Bifidobacterium animalis (B. animalis) species which are another important strain of probiotic bifidobacteria. Major phospholipid classes of plasmalogens in B. longum species were cardiolipin, phosphatidylglycerol and phosphatidic acid. Almost all of the phospholipids from B. longum examined were indicated to be plasmalogens. Although major phospholipid classes of plasmalogens in human brain and major phospholipid classes of plasmalogens in B. longum are different, it is interesting to note that many reported functions of microbiota-gut-brain axis on human neurodegenerative diseases and those functions of plasmalogens on neurodegenerative diseases are overlapped. The presence of plasmalogens in B. longum species may play important roles for many probiotic effects of B. longum to human health.
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41
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Yang D, Zhao D, Ali Shah SZ, Wu W, Lai M, Zhang X, Li J, Guan Z, Zhao H, Li W, Gao H, Zhou X, Yang L. The Role of the Gut Microbiota in the Pathogenesis of Parkinson's Disease. Front Neurol 2019; 10:1155. [PMID: 31781020 PMCID: PMC6851172 DOI: 10.3389/fneur.2019.01155] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 10/15/2019] [Indexed: 12/16/2022] Open
Abstract
It is well-recognized that the gut microbiota (GM) is crucial for gut function, metabolism, and energy cycles. The GM also has effects on neurological outcomes via many mechanisms, such as metabolite production and the gut-brain axis. Emerging evidence has gradually indicated that GM dysbiosis plays a role in several neurological diseases, such as Parkinson's disease (PD), Alzheimer's disease, depression, and multiple sclerosis. Several studies have observed that PD patients generally suffer from gastrointestinal disorders and GM dysbiosis prior to displaying motor symptoms, but the specific link between the GM and PD is not clearly understood. In this review, we aim to summarize what is known regarding the correlation between the GM and PD pathologies, including direct, and indirect evidence.
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Affiliation(s)
- Dongming Yang
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Deming Zhao
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Syed Zahid Ali Shah
- Department of Pathology, Faculty of Veterinary Sciences, Cholistan University of Veterinary and Animal Sciences, Bahawalpur, Pakistan
| | - Wei Wu
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Mengyu Lai
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xixi Zhang
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jie Li
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Zhiling Guan
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Huafen Zhao
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Wen Li
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Hongli Gao
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xiangmei Zhou
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Lifeng Yang
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
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Gu Y, Zheng L, Kumari S, Zhang Q, Liu L, Meng G, Wu H, Bao X, Yao Z, Sun S, Wang X, Zhou M, Jia Q, Song K, Niu K. The relationship between Helicobacter pylori infection and depressive symptoms in the general population in China: The TCLSIH cohort study. Helicobacter 2019; 24:e12632. [PMID: 31332918 DOI: 10.1111/hel.12632] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 05/24/2019] [Accepted: 05/26/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Depressive symptoms are a common, debilitating, and costly public health issue. Helicobacter pylori (H pylori) infection cause changes in the normal physiological state of the gastrointestinal (GI) flora. Although the physiological state of the GI tract is closely related to mental disorders, few population studies have examined the relationship between H pylori infection and depressive symptoms in the general population. The aim of this study was to examine whether H pylori infection is related to depressive symptoms among the general adult population. MATERIALS AND METHODS This cross-sectional study included 5558 inhabitants of Tianjin, China. H pylori infection was diagnosed with the carbon 13 breath test. Depressive symptoms were assessed using the Chinese version of 20-item Self-rating Depression Scale (SDS) with three cutoffs (45, 48, and 50) to indicate elevated depressive symptoms. Multiple logistic regression analysis were conducted to assess the association between H pylori infection and depressive symptoms. RESULTS The prevalence of depressive symptoms (SDS ≥ 45) was 12.7% in men and 17.4% in women. In multivariable models, the odds ratios and 95% confidence interval of having depressive symptoms by H pylori infection were 1.25 (1.01-1.56), 1.46 (1.11-1.91), and 1.46 (1.05-2.06) for three cutoffs: 45, 48, and 50 in women. However, no significant difference was found between H pylori infection and depressive symptoms in men. CONCLUSIONS This study firstly suggested that H pylori infection was related to depressive symptoms in women in the general adult population. Further prospective studies or randomized trials are required to clarify the causality.
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Affiliation(s)
- Yeqing Gu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - Lixiao Zheng
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - Shubham Kumari
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - Qing Zhang
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Li Liu
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Ge Meng
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China.,Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Hongmei Wu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - Xue Bao
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - Zhanxin Yao
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Institute of Environmental & Operational Medicine, Tianjin, China
| | - Shaomei Sun
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Xing Wang
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Ming Zhou
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Qiyu Jia
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Kun Song
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Kaijun Niu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China.,Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China.,Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, China
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43
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Zhao L, Xiong Q, Stary CM, Mahgoub OK, Ye Y, Gu L, Xiong X, Zhu S. Bidirectional gut-brain-microbiota axis as a potential link between inflammatory bowel disease and ischemic stroke. J Neuroinflammation 2018; 15:339. [PMID: 30537997 PMCID: PMC6290529 DOI: 10.1186/s12974-018-1382-3] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 11/28/2018] [Indexed: 12/16/2022] Open
Abstract
Emerging evidence suggests that gut-brain-microbiota axis (GBMAx) may play a pivotal role linking gastrointestinal and neuronal disease. In this review, we summarize the latest advances in studies of GBMAx in inflammatory bowel disease (IBD) and ischemic stroke. A more thorough understanding of the GBMAx could advance our knowledge about the pathophysiology of IBD and ischemic stroke and help to identify novel therapeutic targets via modulation of the GBMAx.
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Affiliation(s)
- Liang Zhao
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qiutang Xiong
- Diabetes Research Center, Renmin Hospital of Wuhan University, Wuhan, China
| | - Creed M. Stary
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA 94305 USA
| | | | - Yingze Ye
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Lijuan Gu
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiaoxing Xiong
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
- Department of Neurosurgery, Renmin Hospital of Wuhan University, 99 Zhang Zhidong Rd, Wuhan, 430060 Hubei China
| | - Shengmei Zhu
- Department of Anesthesiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310000 Zhejiang China
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