keyword
https://read.qxmd.com/read/38603861/minimally-invasive-vagus-nerve-stimulation-modulates-mast-cell-degranulation-via-the-microbiota-gut-brain-axis-to-ameliorate-blood-brain-barrier-and-intestinal-barrier-damage-following-ischemic-stroke
#21
JOURNAL ARTICLE
Yanan Wang, Qianqian Tan, Mingdong Pan, Jiaying Yu, Shaoqi Wu, Wenzhan Tu, Ming Li, Songhe Jiang
Mast cells (MCs) play a significant role in various diseases, and their activation and degranulation can trigger inflammatory responses and barrier damage. Several studies have indicated that vagus nerve stimulation (VNS) exerts ameliorates neurological injury, and regulates gut MC degranulation. However, there is limited research on the modulatory effect of VNS on MCs in both the gut and brain in brain ischemia-reperfusion (I/R) injury in this process. We aim to develop a minimally invasive, targeted and convenient VNS approach to assess the impact of VNS and to clarify the relationship between VNS and MCs on the prognosis of acute ischemic stroke...
April 10, 2024: International Immunopharmacology
https://read.qxmd.com/read/38599497/gut-microbiota-dysbiosis-contributes-to-depression-like-behaviors-via-hippocampal-nlrp3-mediated-neuroinflammation-in-a-postpartum-depression-mouse-model
#22
JOURNAL ARTICLE
Qi Xu, Lihong Sun, Qing Chen, Cuicui Jiao, Yuan Wang, Hua Li, Jiaqian Xie, Fangfang Zhu, Jiangling Wang, Wen Zhang, Linghua Xie, Hui Wu, Zhiyi Zuo, Xinzhong Chen
Postpartum depression (PPD) is a severe mental disorder that affects approximately 10---20% of women after childbirth. The precise mechanism underlying PPD pathogenesis remains elusive, thus limiting the development of therapeutics. Gut microbiota dysbiosis is considered to contribute to major depressive disorder. However, the associations between gut microbiota and PPD remain unanswered. Here, we established a mouse PPD model by sudden ovarian steroid withdrawal after hormone-simulated pseudopregnancy-human (HSP-H) in ovariectomy (OVX) mouse...
April 8, 2024: Brain, Behavior, and Immunity
https://read.qxmd.com/read/38592680/the-interaction-between-stress-and-inflammatory-bowel-disease-in-pediatric-and-adult-patients
#23
REVIEW
Oana Belei, Diana-Georgiana Basaca, Laura Olariu, Manuela Pantea, Daiana Bozgan, Anda Nanu, Iuliana Sîrbu, Otilia Mărginean, Ileana Enătescu
Background: Inflammatory bowel diseases (IBDs) have seen an exponential increase in incidence, particularly among pediatric patients. Psychological stress is a significant risk factor influencing the disease course. This review assesses the interaction between stress and disease progression, focusing on articles that quantified inflammatory markers in IBD patients exposed to varying degrees of psychological stress. Methods: A systematic narrative literature review was conducted, focusing on the interaction between IBD and stress among adult and pediatric patients, as well as animal subjects...
February 27, 2024: Journal of Clinical Medicine
https://read.qxmd.com/read/38590098/potential-alzheimer-s-disease-drug-targets-identified-through-microglial-biology-research
#24
REVIEW
Izabela Lepiarz-Raba, Taufik Hidayat, Anthony J Hannan, Ali Jawaid
INTRODUCTION: Microglia, the primary immune cells in the brain, play multifaceted roles in Alzheimer's disease (AD). Microglia can potentially mitigate the pathological progression of AD by clearing amyloid beta (Aβ) deposits in the brain and through neurotrophic support. In contrast, disproportionate activation of microglial pro-inflammatory pathways, as well as excessive elimination of healthy synapses, can exacerbate neurodegeneration in AD. The challenge, therefore, lies in discerning the precise regulation of the contrasting microglial properties to harness their therapeutic potential in AD...
April 8, 2024: Expert Opinion on Drug Discovery
https://read.qxmd.com/read/38589690/prebiotic-diet-normalizes-aberrant-immune-and-behavioral-phenotypes-in-a-mouse-model-of-autism-spectrum-disorder
#25
JOURNAL ARTICLE
Naika Prince, Lucia N Peralta Marzal, Anastasia Markidi, Sabbir Ahmed, Youri Adolfs, R Jeroen Pasterkamp, Himanshu Kumar, Guus Roeselers, Johan Garssen, Aletta D Kraneveld, Paula Perez-Pardo
Autism spectrum disorder (ASD) is a cluster of neurodevelopmental disorders characterized by deficits in communication and behavior. Increasing evidence suggests that the microbiota-gut-brain axis and the likely related immune imbalance may play a role in the development of this disorder. Gastrointestinal deficits and gut microbiota dysfunction have been linked to the development or severity of autistic behavior. Therefore, treatments that focus on specific diets may improve gastrointestinal function and aberrant behavior in individuals with ASD...
April 8, 2024: Acta Pharmacologica Sinica
https://read.qxmd.com/read/38589621/large-scale-phenotyping-of-patients-with-long-covid-post-hospitalization-reveals-mechanistic-subtypes-of-disease
#26
JOURNAL ARTICLE
Felicity Liew, Claudia Efstathiou, Sara Fontanella, Matthew Richardson, Ruth Saunders, Dawid Swieboda, Jasmin K Sidhu, Stephanie Ascough, Shona C Moore, Noura Mohamed, Jose Nunag, Clara King, Olivia C Leavy, Omer Elneima, Hamish J C McAuley, Aarti Shikotra, Amisha Singapuri, Marco Sereno, Victoria C Harris, Linzy Houchen-Wolloff, Neil J Greening, Nazir I Lone, Matthew Thorpe, A A Roger Thompson, Sarah L Rowland-Jones, Annemarie B Docherty, James D Chalmers, Ling-Pei Ho, Alexander Horsley, Betty Raman, Krisnah Poinasamy, Michael Marks, Onn Min Kon, Luke S Howard, Daniel G Wootton, Jennifer K Quint, Thushan I de Silva, Antonia Ho, Christopher Chiu, Ewen M Harrison, William Greenhalf, J Kenneth Baillie, Malcolm G Semple, Lance Turtle, Rachael A Evans, Louise V Wain, Christopher Brightling, Ryan S Thwaites, Peter J M Openshaw
One in ten severe acute respiratory syndrome coronavirus 2 infections result in prolonged symptoms termed long coronavirus disease (COVID), yet disease phenotypes and mechanisms are poorly understood1 . Here we profiled 368 plasma proteins in 657 participants ≥3 months following hospitalization. Of these, 426 had at least one long COVID symptom and 233 had fully recovered. Elevated markers of myeloid inflammation and complement activation were associated with long COVID. IL-1R2, MATN2 and COLEC12 were associated with cardiorespiratory symptoms, fatigue and anxiety/depression; MATN2, CSF3 and C1QA were elevated in gastrointestinal symptoms and C1QA was elevated in cognitive impairment...
April 2024: Nature Immunology
https://read.qxmd.com/read/38589392/dermal-injury-drives-a-skin-to-gut-axis-that-disrupts-the-intestinal-microbiome-and-intestinal-immune-homeostasis-in-mice
#27
JOURNAL ARTICLE
Tatsuya Dokoshi, Yang Chen, Kellen J Cavagnero, Gibraan Rahman, Daniel Hakim, Samantha Brinton, Hana Schwarz, Elizabeth A Brown, Alan O'Neill, Yoshiyuki Nakamura, Fengwu Li, Nita H Salzman, Rob Knight, Richard L Gallo
The composition of the microbial community in the intestine may influence the functions of distant organs such as the brain, lung, and skin. These microbes can promote disease or have beneficial functions, leading to the hypothesis that microbes in the gut explain the co-occurrence of intestinal and skin diseases. Here, we show that the reverse can occur, and that skin directly alters the gut microbiome. Disruption of the dermis by skin wounding or the digestion of dermal hyaluronan results in increased expression in the colon of the host defense genes Reg3 and Muc2, and skin wounding changes the composition and behavior of intestinal bacteria...
April 8, 2024: Nature Communications
https://read.qxmd.com/read/38588753/gut-brain-axis-in-the-pathogenesis-of-sepsis-associated-encephalopathy
#28
REVIEW
Xin Wang, Xiaoyue Wen, Shiying Yuan, Jiancheng Zhang
The gut-brain axis is a bidirectional communication network linking the gut and the brain, overseeing digestive functions, emotional responses, body immunity, brain development, and overall health. Substantial research highlights a connection between disruptions of the gut-brain axis and various psychiatric and neurological conditions, including depression and Alzheimer's disease. Given the impact of the gut-brain axis on behavior, cognition, and brain diseases, some studies have started to pay attention to the role of the axis in sepsis-associated encephalopathy (SAE), where cognitive impairment is the primary manifestation...
April 6, 2024: Neurobiology of Disease
https://read.qxmd.com/read/38587699/the-interaction-between-nutraceuticals-and-gut-microbiota-a-novel-therapeutic-approach-to-prevent-and-treatment-parkinson-s-disease
#29
REVIEW
Liyan Yao, Yong Yang, Xiaowei Yang, Mohammad J Rezaei
Parkinson's disease (PD) is a complex neurodegenerative disorder characterized by the progressive loss of dopaminergic neurons, leading to motor and non-motor symptoms. Emerging research has shed light on the role of gut microbiota in the pathogenesis and progression of PD. Nutraceuticals such as curcumin, berberine, phytoestrogens, polyphenols (e.g., resveratrol, EGCG, and fisetin), dietary fibers have been shown to influence gut microbiota composition and function, restoring microbial balance and enhancing the gut-brain axis...
April 8, 2024: Molecular Neurobiology
https://read.qxmd.com/read/38584880/a-gut-microbiome-feeling-about-addiction-interactions-with-stress-and-social-systems
#30
REVIEW
Rubén García-Cabrerizo, John F Cryan
In recent years, an increasing attention has given to the intricate and diverse connection of microorganisms residing in our gut and their impact on brain health and central nervous system disease. There has been a shift in mindset to understand that drug addiction is not merely a condition that affects the brain, it is now being recognized as a disorder that also involves external factors such as the intestinal microbiota, which could influence vulnerability and the development of addictive behaviors. Furthermore, stress and social interactions, which are closely linked to the intestinal microbiota, are powerful modulators of addiction...
May 2024: Neurobiology of Stress
https://read.qxmd.com/read/38583811/bitter-taste-receptors-key-target-to-understand-the-effects-of-polyphenols-on-glucose-and-body-weight-homeostasis-pathophysiological-and-pharmacological-implications
#31
REVIEW
Marta Trius-Soler, Juan José Moreno
Experimental and clinical research has reported beneficial effects of polyphenol intake on high prevalent diseases such as type 2 diabetes and obesity. These phytochemicals are ligands of taste 2 receptors (T2Rs) that have been recently located in a variety of organs and extra-oral tissues. Therefore, the interaction between polyphenol and T2Rs in brain structures can play a direct effect on appetite/satiety regulation and food intake. T2Rs are also expressed along the digestive tract, and their interaction with polyphenols can induce the release of gastrointestinal hormones (e...
April 5, 2024: Biochemical Pharmacology
https://read.qxmd.com/read/38583497/effects-of-xylo-oligosaccharide-on-gut-microbiota-brain-protein-expression-and-lipid-profile-induced-by-high-fat-diet
#32
JOURNAL ARTICLE
Chu-Yun Teng, Ning-Jo Kao, Thi Kim Ngan Nguyen, Ching-I Lin, Tzu-Wen L Cross, Shyh-Hsiang Lin
Midlife overweight and obesity are risk factors of cognitive decline and Alzheimer' s disease (AD) in late life. In addition to increase the risk of obesity and cognitive dysfunction, diets rich in fats also contributes to an imbalance of gut microbiota. Xylo-oligosaccharides (XOS) are a kind of prebiotics with several biological advantages, and can selectively promote the growth of beneficial microorganism in the gut. To explore whether XOS can alleviate cognitive decline induced by high-fat diet (HFD) through improving gut microbiota composition, mice were fed with normal control or 60% HFD for 9 weeks to induce obesity...
April 5, 2024: Journal of Nutritional Biochemistry
https://read.qxmd.com/read/38579493/hepatic-interoception-in-health-and-disease
#33
REVIEW
Hans-Rudolf Berthoud, Heike Münzberg, Christopher D Morrison, Winfried L Neuhuber
The liver is a large organ with crucial functions in metabolism and immune defense, as well as blood homeostasis and detoxification, and it is clearly in bidirectional communication with the brain and rest of the body via both neural and humoral pathways. A host of neural sensory mechanisms have been proposed, but in contrast to the gut-brain axis, details for both the exact site and molecular signaling steps of their peripheral transduction mechanisms are generally lacking. Similarly, knowledge about function-specific sensory and motor components of both vagal and spinal access pathways to the hepatic parenchyma is missing...
March 29, 2024: Autonomic Neuroscience: Basic & Clinical
https://read.qxmd.com/read/38579074/bifidobacterium-bifidum-supplementation-improves-ischemic-stroke-outcomes-in-elderly-patients-a-retrospective-study
#34
JOURNAL ARTICLE
Hui Xin, Xinjie Zhang, Peng Li, Hui Li, Gang Feng, Guiling Wang
This retrospective study aimed to explore the therapeutic potential of Bifidobacterium bifidum supplementation on elderly ischemic stroke patients. We retrospectively analyzed electronic medical records from 153 elderly ischemic stroke patients. Patients were stratified into 2 groups: those receiving B bifidum supplementation (Intervention group, n = 73) and those receiving standard treatment without any additional supplementation (Control group, n = 80). Outcomes were assessed using the National Institutes of Health Stroke Scale (NIHSS), Montreal Cognitive Assessment (MoCA), Self-Rating Depression Scale (SDS), and Self-Rating Anxiety Scale (SAS)...
April 5, 2024: Medicine (Baltimore)
https://read.qxmd.com/read/38577200/update-on-the-gut-microbiome-in-health-and-diseases
#35
REVIEW
Maurizio Salvadori, Giuseppina Rosso
The Human Microbiome Project, Earth Microbiome Project, and next-generation sequencing have advanced novel genome association, host genetic linkages, and pathogen identification. The microbiome is the sum of the microbes, their genetic information, and their ecological niche. This study will describe how millions of bacteria in the gut affect the human body in health and disease. The gut microbiome changes in relation with age, with an increase in Bacteroidetes and Firmicutes . Host and environmental factors affecting the gut microbiome are diet, drugs, age, smoking, exercise, and host genetics...
March 20, 2024: World Journal of Methodology
https://read.qxmd.com/read/38576620/from-gut-to-brain-understanding-the-role-of-microbiota-in-inflammatory-bowel-disease
#36
REVIEW
Siyu Wang, Shuwei Zhou, Zhongyu Han, Bin Yu, Yin Xu, Yumeng Lin, Yutong Chen, Zi Jin, Yalong Li, Qinhan Cao, Yunying Xu, Qiang Zhang, Yuan-Cheng Wang
With the proposal of the "biological-psychological-social" model, clinical decision-makers and researchers have paid more attention to the bidirectional interactive effects between psychological factors and diseases. The brain-gut-microbiota axis, as an important pathway for communication between the brain and the gut, plays an important role in the occurrence and development of inflammatory bowel disease. This article reviews the mechanism by which psychological disorders mediate inflammatory bowel disease by affecting the brain-gut-microbiota axis...
2024: Frontiers in Immunology
https://read.qxmd.com/read/38572789/gut-microbiota-the-indispensable-player-in-neurodegenerative-diseases
#37
REVIEW
Sen Li, Yuwei Cai, Shuo Wang, Lei Luo, Yu Zhang, Kai Huang, Xiao Guan
As one of the most urgent social and health problems in the world, neurodegenerative diseases have always been attracted by researchers. However, the pathological mechanisms and therapeutic approaches are not achieved. In addition to the established roles of oxidative stress, inflammation and immune response, the changes of gut microbiota are also closely related to the pathogenesis of neurodegenerative diseases. Gut microbiota is the central player of gut- brain axis, the dynamic bidirectional communication pathway between gut microbiota and central nervous system, and emerging insights have confirmed its indispensability in the development of neurodegenerative diseases...
April 4, 2024: Journal of the Science of Food and Agriculture
https://read.qxmd.com/read/38565643/short-chain-fatty-acids-linking-diet-the-microbiome-and-immunity
#38
REVIEW
Elizabeth R Mann, Ying Ka Lam, Holm H Uhlig
The short-chain fatty acids (SCFAs) butyrate, propionate and acetate are microbial metabolites and their availability in the gut and other organs is determined by environmental factors, such as diet and use of antibiotics, that shape the diversity and metabolism of the microbiota. SCFAs regulate epithelial barrier function as well as mucosal and systemic immunity via evolutionary conserved processes that involve G protein-coupled receptor signalling or histone deacetylase activity. Indicatively, the anti-inflammatory role of butyrate is mediated through direct effects on the differentiation of intestinal epithelial cells, phagocytes, B cells and plasma cells, and regulatory and effector T cells...
April 2, 2024: Nature Reviews. Immunology
https://read.qxmd.com/read/38565398/dietary-emulsifier-polysorbate-80-exposure-accelerates-age-related-cognitive-decline
#39
JOURNAL ARTICLE
Lan Zhang, Zhenyu Yin, Xilei Liu, Ge Jin, Yan Wang, Linlin He, Meimei Li, Xiaoqi Pang, Bo Yan, Zexi Jia, Jiahui Ma, Jingge Wei, Fangyuan Cheng, Dai Li, Lu Wang, Zhaoli Han, Qiang Liu, Fanglian Chen, Hailong Cao, Ping Lei
Gut microbial homeostasis is crucial for the health of cognition in elderly. Previous study revealed that polysorbate 80 (P80) as a widely used emulsifier in food industries and pharmaceutical formulations could directly alter the human gut microbiota compositions. However, whether long-term exposure to P80 could accelerate age-related cognitive decline via gut-brain axis is still unknown. Accordingly, in this study, we used the senescence accelerated mouse prone 8 (SAMP8) mouse model to investigate the effects of the emulsifier P80 intake (1 % P80 in drinking water for 12 weeks) on gut microbiota and cognitive function...
March 31, 2024: Brain, Behavior, and Immunity
https://read.qxmd.com/read/38562820/rodent-gut-bacteria-coexisting-with-an-insect-gut-virus-in-parasitic-cysts-metagenomic-evidence-of-microbial-translocation-and-co-adaptation-in-spatially-confined-niches
#40
Amro Ammar, Vaidhvi Singh, Sanja Ilic, Fnu Samiksha, Antoinette Marsh, Alex Rodriguez-Palacios
In medicine, parasitic cysts or cysticerci (fluid-filled cysts, larval stage of tapeworms) are believed to be sterile (no bacteria), and therein, the treatment of cysticerci infestations of deep extra-intestinal tissues ( e . g ., brain) relies almost exclusively on the use of antiparasitic medications, and rarely antibiotics. To date, however, it is unclear why common post-treatment complications include abscessation. This study quantified the microbial composition of parasitic cyst contents in a higher-order rodent host, using multi-kingdom shotgun metagenomics, to improve our understanding of gut microbial translocation and adaptation strategies in wild environments...
March 23, 2024: bioRxiv
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