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Brain-gut axis

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https://www.readbyqxmd.com/read/29791992/role-of-the-duodenum-in-the-pathogenesis-of-functional-dyspepsia-a-paradigm-shift
#1
REVIEW
Hye-Kyung Jung, Nicholas J Talley
Functional dyspepsia (FD) is a common disorder characterized by chronic epigastric pain or burning, or bothersome postprandial fullness or early satiation, without a definitive organic cause. The pathogenesis of FD is likely heterogeneous. Classically, motor disorders, visceral hypersensitivity, and brain-gut interactions have been implicated in the pathophysiology of FD, but recently an important role for chronic low-grade inflammation and post-infectious gastroenteritis in FD has been reported and confirmed...
May 23, 2018: Journal of Neurogastroenterology and Motility
https://www.readbyqxmd.com/read/29790946/a-microbial-endocrinology-based-simulated-small-intestinal-medium-for-the-evaluation-of-neurochemical-production-by-gut-microbiota
#2
Daniel N Villageliú, Sharon Rasmussen, Mark Lyte
Microbial endocrinology represents the union of microbiology and neurobiology and is concerned with the ability of neurochemicals to serve as an evolutionary-based language between host and microbiota in health and disease. The recognition that microorganisms produce, modify and respond to the same neurochemicals utilized in the various signaling pathways of their mammalian hosts is increasingly being recognized as a mechanism by which the host and microbiota may interact to influence the progression of infectious disease as well as influence behavior through the microbiota-gut-brain axis...
May 21, 2018: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/29785336/targeting-the-microbiota-from-irritable-bowel-syndrome-to-mood-disorders-focus-on-probiotics-and-prebiotics
#3
M M Pusceddu, K Murray, M G Gareau
Purpose of review: The crosstalk between the gut and the brain has revealed a complex communication system responsible for maintaining a proper gastrointestinal homeostasis as well as affect emotional mood and cognitive functions. Recent research has revealed that beneficial manipulation of the microbiota by probiotics and prebiotics represent an emerging and novel strategy for the treatment of a large spectrum of diseases ranging from visceral pain to mood disorders. The review critically evaluates current knowledge of the effects exerted by both probiotics and prebiotics in irritable bowel syndrome (IBS) and mood disorders such as anxiety and depression...
March 2018: Current Pathobiology Reports
https://www.readbyqxmd.com/read/29782468/potential-role-of-gut-microbiota-in-als-pathogenesis-and-possible-novel-therapeutic-strategies
#4
Letizia Mazzini, Luca Mogna, Fabiola De Marchi, Angela Amoruso, Marco Pane, Irene Aloisio, Nicole Bozzi Cionci, Francesca Gaggìa, Ausiliatrice Lucenti, Enrica Bersano, Roberto Cantello, Diana Di Gioia, Giovanni Mogna
BACKGROUND: Recent preclinical studies suggest that dysfunction of gastrointestinal tract may play a role in amyotrophic lateral sclerosis (ALS) pathogenesis through a modification of the gut microbiota brain axis. Our study is the first focused on microbiota analysis in ALS patients. AIM: Our aim was to study the main human gut microbial groups and the overall microbial diversity in ALS and healthy subjects. Moreover we have examined the influence of a treatment with a specific bacteriotherapy composed of Lactobacillus strains (Lactobacillus fermentum, Lactobacillus delbrueckii, Lactobacillus plantarum, Lactobacillus salivarius) acting on the gastrointestinal barrier...
May 18, 2018: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/29769579/hla-class-ii-haplotypes-and-autism-spectrum-disorders
#5
Meriem Bennabi, Alexandru Gaman, Richard Delorme, Wahid Boukouaci, Céline Manier, Isabelle Scheid, Nassima Si Mohammed, Djaouida Bengoufa, Dominique Charron, Rajagopal Krishnamoorthy, Marion Leboyer, Ryad Tamouza
Infections and autoimmunity are associated with autism spectrum disorders (ASD), with both strongly influenced by the genetic regulation of the human leukocyte antigen (HLA) system. The relationship between ASD and the HLA genetic diversity requires further investigation. Using a case control design, the distribution of HLA class II-DRB1 and DQB1 alleles, genotypes and haplotypes were investigated in ASD patients, versus healthy controls (HC). ASD patients meeting DSM-IV TR criteria and HC (474 and 350 respectively) were genotyped at medium resolution using a Luminex-based SSO technology...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29768168/a-worm-s-gut-feelings-neuronal-muscarinic-and-epithelial-canonical-wnt-pathways-promote-antimicrobial-defense
#6
Romana R Gerner, Manuela Raffatellu
Molecular mechanisms connecting the gut-brain axis to immunity remain elusive. In this issue of Immunity, Labed et al. (2018) demonstrate that two evolutionarily conserved signaling mechanisms, the neuronal muscarinic and the epithelial Wnt pathways, together induce antimicrobial peptide expression that protects Caenorhabditis elegans against intestinal infection.
May 15, 2018: Immunity
https://www.readbyqxmd.com/read/29760448/the-gut-microbiota-and-the-brain-gut-kidney-axis-in-hypertension-and-chronic-kidney-disease
#7
REVIEW
Tao Yang, Elaine M Richards, Carl J Pepine, Mohan K Raizada
Crosstalk between the gut microbiota and the host has attracted considerable attention owing to its involvement in diverse diseases. Chronic kidney disease (CKD) is commonly associated with hypertension and is characterized by immune dysregulation, metabolic disorder and sympathetic activation, which are all linked to gut dysbiosis and altered host-microbiota crosstalk. In this Review, we discuss the complex interplay between the brain, the gut, the microbiota and the kidney in CKD and hypertension and explain our brain-gut-kidney axis hypothesis for the pathogenesis of these diseases...
May 14, 2018: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/29753796/the-neuroendocrinology-of-the-microbiota-gut-brain-axis-a-behavioural-perspective
#8
REVIEW
Sofia Cussotto, Kiran V Sandhu, Timothy G Dinan, John F Cryan
The human gut harbours trillions of symbiotic bacteria that play a key role in programming different aspects of host physiology in health and disease. These intestinal microbes are also key components of the gut-brain axis, the bidirectional communication pathway between the gut and the central nervous system (CNS). In addition, the CNS is closely interconnected with the endocrine system to regulate many physiological processes. An expanding body of evidence is supporting the notion that gut microbiota modifications and/or manipulations may also play a crucial role in the manifestation of specific behavioural responses regulated by neuroendocrine pathways...
May 10, 2018: Frontiers in Neuroendocrinology
https://www.readbyqxmd.com/read/29752611/comparison-of-electroacupuncture-and-mild-warm-moxibustion-on-brain-gut-function-in-patients-with-constipation-predominant-irritable-bowel-syndrome-a-randomized-controlled-trial
#9
Ji-Meng Zhao, Jin-Hua Lu, Xiao-Jun Yin, Lu-Yi Wu, Chun-Hui Bao, Xing-Kui Chen, Yue-Hua Chen, Wei-Jun Tang, Xiao-Ming Jin, Huan-Gan Wu, Yin Shi
OBJECTIVE: To compare the effects of electroacupuncture (EA) and mild-warm moxibustion (Mox) therapies for constipation-predominant irritable bowel syndrome (C-IBS) patients. METHODS: Sixty C-IBS patients were assigned to 2 groups by simple randomized method, i.e. EA group (30 cases) and Mox group (30 cases). Both EA and Mox treatments were performed on bilateral Tianshu (ST 25) and Shangjuxu (ST 37) for 30 min each time, 6 times per week, for 4 consecutive weeks...
May 2018: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29748817/the-role-of-the-microbiome-for-human-health-from-basic-science-to-clinical-applications
#10
M Hasan Mohajeri, Robert J M Brummer, Robert A Rastall, Rinse K Weersma, Hermie J M Harmsen, Marijke Faas, Manfred Eggersdorfer
The 2017 annual symposium organized by the University Medical Center Groningen in The Netherlands focused on the role of the gut microbiome in human health and disease. Experts from academia and industry examined interactions of prebiotics, probiotics, or vitamins with the gut microbiome in health and disease, the development of the microbiome in early-life and the role of the microbiome on the gut-brain axis. The gut microbiota changes dramatically during pregnancy and intrinsic factors (such as stress), in addition to extrinsic factors (such as diet, and drugs) influence the composition and activity of the gut microbiome throughout life...
May 10, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29742478/autoimmune-phenotypes-in-schizophrenia-reveal-novel-treatment-targets
#11
REVIEW
Emily G Severance, Faith B Dickerson, Robert H Yolken
Typical and atypical antipsychotics are the first-line treatments for schizophrenia, but these classes of drugs are not universally effective, and they can have serious side effects that impact compliance. Antipsychotic drugs generally target the dopamine pathways with some variation. As research of schizophrenia pathophysiology has shifted away from a strictly dopamine-centric focus, the development of new pharmacotherapies has waned. A field of inquiry with centuries-old roots is gaining traction in psychiatric research circles and may represent a new frontier for drug discovery in schizophrenia...
May 6, 2018: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29730508/beneficial-psychological-effects-of-novel-psychobiotics-in-diabetic-rats-the-interaction-among-the-gut-blood-and-amygdala
#12
Mohammad Morshedi, Khadijeh Bavafa Valenlia, Elaheh Sadat Hosseinifard, Parviz Shahabi, Mehran Mesgari Abbasi, Meysam Ghorbani, Abolfazl Barzegari, Saeed Sadigh-Eteghad, Maryam Saghafi-Asl
Type 2 diabetes mellitus (T2DM) can lead to major complications such as psychiatric disorders which include depressive and anxiety-like behaviors. The association of the gut-brain axis in the development of such disorders, especially in T2DM, has been elucidated; however, gut dysbiosis is also reported in patients with T2DM. Hence, the regulation of the gut-brain axis, in particular, the gut-amygdala, as a vital region for the regulation of behavior is essential. Thirty-five male Wistar rats were divided into six groups...
April 3, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29721973/the-role-of-microbiota-in-retinal-disease
#13
Sheldon Rowan, Allen Taylor
The ten years since the first publications on the human microbiome project have brought enormous attention and insight into the role of the human microbiome in health and disease. Connections between populations of microbiota and ocular disease are now being established, and increased accessibility to microbiome research and insights into other diseases is expected to yield enormous information in the coming years. With the characterization of the ocular microbiome, important insights have already been made regarding corneal and conjunctival tissues...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29706461/abnormal-neuronal-response-to-rectal-and-anal-stimuli-in-patients-treated-with-primary-radiotherapy-for-anal-cancer
#14
Susanne Haas, Pia Faaborg, Mikkel Gram, Lilli Lundby, Christina Brock, Anbjørn M Drewes, Søren Laurberg, Klaus Krogh, Peter Christensen
INTRODUCTION: Sphincter-sparing radiotherapy or chemoradiation (RT/CRT) have become the standard treatments for most patients with anal cancer. Unfortunately, long-term survivors often suffer from severe bowel symptoms indicating sensory dysfunction. The aim of the present study was to characterize the sensory pathways of the brain-gut axis after radiotherapy for anal cancer. METHOD: Cortical evoked potentials (CEPs) were recorded during repeated, rapid balloon distensions of the rectum and anal canal in 13 patients with anal cancer treated with radiotherapy or chemoradiation and in 17 healthy volunteers...
April 26, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29705711/alcohol-microbiome-and-their-effect-on-psychiatric-disorders
#15
REVIEW
Thomas Hillemacher, Oliver Bachmann, Kai G Kahl, Helge Frieling
There is accumulating evidence that alcohol consumption and especially alcohol withdrawal increase brain levels of known innate immune signaling molecules and cause neuroinflammation. It has been shown that microbiota play a pivotal role in this process and affect central neurochemistry and behavior. Disruption of or alterations in the intimate cross-talk between microbiome and brain may be a significant factor in many psychiatric disorders. Alterations in the composition of the microbiome, so called dysbiosis, may result in detrimental distortion of microbe-host homeostasis modulating the hypothalamic-pituitary-adrenal axis...
April 26, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29705121/dysbiosis-of-gut-microbiota-and-microbial-metabolites-in-parkinson-s-disease
#16
REVIEW
Meng-Fei Sun, Yan-Qin Shen
Gut microbial dysbiosis and alteration of microbial metabolites in Parkinson's disease (PD) have been increasingly reported. Dysbiosis in the composition and abundance of gut microbiota can affect both the enteric nervous system and the central nervous system (CNS), indicating the existence of a microbiota-gut-brain axis and thereby causing CNS diseases. Disturbance of the microbiota-gut-brain axis has been linked to specific microbial products that are related to gut inflammation and neuroinflammation. Future directions should therefore focus on the exploration of specific gut microbes or microbial metabolites that contribute to the development of PD...
April 26, 2018: Ageing Research Reviews
https://www.readbyqxmd.com/read/29691482/why-does-the-microbiome-affect-behaviour
#17
REVIEW
Katerina V-A Johnson, Kevin R Foster
Growing evidence indicates that the mammalian microbiome can affect behaviour, and several symbionts even produce neurotransmitters. One common explanation for these observations is that symbionts have evolved to manipulate host behaviour for their benefit. Here, we evaluate the manipulation hypothesis by applying evolutionary theory to recent work on the gut-brain axis. Although the theory predicts manipulation by symbionts under certain conditions, these appear rarely satisfied by the genetically diverse communities of the mammalian microbiome...
April 24, 2018: Nature Reviews. Microbiology
https://www.readbyqxmd.com/read/29689727/vascular-cognitive-impairment-and-the-gut-microbiota
#18
Sinian Li, Yiming Shao, Kanglan Li, Changmei HuangFu, Wenjie Wang, Zhou Liu, Zhiyou Cai, Bin Zhao
Vascular cognitive impairment (VCI), the second most common cause of dementia in elderly people, is a term that refers to all forms of cognitive disorders that can be attributed to cerebrovascular disease such as manifestations of discrete infarctions, brain hemorrhages, and white matter lesions. The gut microbiota (GM) has emerged recently as an essential player in the development of VCI. The GM may affect the brain's physiological, behavioral, and cognitive functions through the brain-gut axis via neural, immune, endocrine, and metabolic pathways...
April 17, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29686603/indole-a-signaling-molecule-produced-by-the-gut-microbiota-negatively-impacts-emotional-behaviors-in-rats
#19
Mathilde Jaglin, Moez Rhimi, Catherine Philippe, Nicolas Pons, Aurélia Bruneau, Bénédicte Goustard, Valérie Daugé, Emmanuelle Maguin, Laurent Naudon, Sylvie Rabot
Gut microbiota produces a wide and diverse array of metabolites that are an integral part of the host metabolome. The emergence of the gut microbiome-brain axis concept has prompted investigations on the role of gut microbiota dysbioses in the pathophysiology of brain diseases. Specifically, the search for microbe-related metabolomic signatures in human patients and animal models of psychiatric disorders has pointed out the importance of the microbial metabolism of aromatic amino acids. Here, we investigated the effect of indole on brain and behavior in rats...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29686534/the-neurodevelopmental-perspective-of-surgical-necrotizing-enterocolitis-the-role-of-the-gut-brain-axis
#20
REVIEW
Chariton Moschopoulos, Panagiotis Kratimenos, Ioannis Koutroulis, Bhairav V Shah, Anja Mowes, Vineet Bhandari
This state-of-the-art review article aims to highlight the most recent evidence about the therapeutic options of surgical necrotizing enterocolitis, focusing on the molecular basis of the gut-brain axis in relevance to the neurodevelopmental outcomes of primary peritoneal drainage and primary laparotomy. Current evidence favors primary laparotomy over primary peritoneal drainage as regards neurodevelopment in the surgical treatment of necrotizing enterocolitis. The added exposure to inhalational anesthesia in infants undergoing primary laparotomy is an additional confounding variable but requires further study...
2018: Mediators of Inflammation
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