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https://www.readbyqxmd.com/read/28649603/the-gut-brain-axis-is-intestinal-inflammation-a-silent-driver-of-parkinson-s-disease-pathogenesis
#1
Madelyn C Houser, Malú G Tansey
The state of the intestinal environment can have profound effects on the activity of the central nervous system through the physiological contributions of the microbiota, regulation of intestinal barrier function, and altered activity of peripheral neurons. The common language employed for much of the gut-brain communication is the modulation of immune activity. Chronic proinflammatory immune activity is increasingly being recognized as a fundamental element of neurodegenerative disorders, and in Parkinson's disease, inflammation in the intestine appears particularly relevant in pathogenesis...
2017: NPJ Parkinson's Disease
https://www.readbyqxmd.com/read/28648659/enterochromaffin-cells-are-gut-chemosensors-that-couple-to-sensory-neural-pathways
#2
Nicholas W Bellono, James R Bayrer, Duncan B Leitch, Joel Castro, Chuchu Zhang, Tracey A O'Donnell, Stuart M Brierley, Holly A Ingraham, David Julius
Dietary, microbial, and inflammatory factors modulate the gut-brain axis and influence physiological processes ranging from metabolism to cognition. The gut epithelium is a principal site for detecting such agents, but precisely how it communicates with neural elements is poorly understood. Serotonergic enterochromaffin (EC) cells are proposed to fulfill this role by acting as chemosensors, but understanding how these rare and unique cell types transduce chemosensory information to the nervous system has been hampered by their paucity and inaccessibility to single-cell measurements...
June 21, 2017: Cell
https://www.readbyqxmd.com/read/28647001/gastric-bypass-surgery-stimulates-the-dormant-gut-brain-axis-in-obesity
#3
Stephanie P B Caligiuri, Paul J Kenny
To truly reduce the rates of chronic kidney disease, a root cause of kidney damage, obesity, must be targeted. Weight loss is often unsustainable because imbalances in satiety regulators are frequently not addressed to ensure maintenance of weight loss. In a recent study, gastric bypass surgery rebalanced satiety signals through resensitization of the gut-brain axis in obesity. This research may lead to noninvasive strategies to reduce obesity and obesity-related kidney disease.
July 2017: Kidney International
https://www.readbyqxmd.com/read/28643167/microbiome-probiotics-and-neurodegenerative-diseases-deciphering-the-gut-brain-axis
#4
REVIEW
Susan Westfall, Nikita Lomis, Imen Kahouli, Si Yuan Dia, Surya Pratap Singh, Satya Prakash
The gut microbiota is essential to health and has recently become a target for live bacterial cell biotherapies for various chronic diseases including metabolic syndrome, diabetes, obesity and neurodegenerative disease. Probiotic biotherapies are known to create a healthy gut environment by balancing bacterial populations and promoting their favorable metabolic action. The microbiota and its respective metabolites communicate to the host through a series of biochemical and functional links thereby affecting host homeostasis and health...
June 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28640714/an-unexplored-brain-gut-microbiota-axis-in-stroke
#5
Shu Wen Wen, Connie H Y Wong
Microbiota research, in particular that of the gut, has recently gained much attention in medical research owing to technological advances in metagenomics and metabolomics. Despite this, much of the research direction has focused on long-term or chronic effects of microbiota manipulation on health and disease. In this addendum, we reflect on our recent publication that reported findings addressing a rather unconventional hypothesis. Bacterial pneumonia is highly prevalent and is one of the leading contributors to stroke morbidity and mortality worldwide...
June 22, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28640632/gut-microbiota-nitric-oxide-and-microglia-as-pre-requisites-for-neurodegenerative-disorders
#6
Joyce Ka Yu Tse
Regulating fluctuating endogenous nitric oxide (NO) levels is necessary for proper physiological functions. Aberrant NO pathways are implicated in a number of neurological disorders, including Alzheimer's Disease (AD) and Parkinson's Disease. The mechanism of NO in oxidative and nitrosative stress with pathological consequences involves reactions with reactive oxygen species (e.g. superoxide) to form the highly reactive peroxynitrite, hydrogen peroxide, hypochloride ions and hydroxyl radical. NO levels are typically regulated by endogenous nitric oxide synthases (NOS), and inflammatory iNOS is implicated in the pathogenesis of neurodegenerative diseases, in which elevated NO mediates axonal degeneration and activates cyclooxygenases to provoke neuroinflammation...
June 22, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28636585/microbiome-a-potential-component-in-the-origin-of-mental-disorders
#7
George B Stefano, Radek Ptacek, Jiri Raboch, Richard M Kream
It is not surprising to find microbiome abnormalities present in psychiatric disorders such as depressive disorders, bipolar disorders, etc. Evolutionary pressure may provide an existential advantage to the host eukaryotic cells in that it survives in an extracellular environment containing non-self cells (e.g., bacteria). This phenomenon is both positive and negative, as with other intercellular processes. In this specific case, the phenomenal amount of information gained from combined bacterial genome could enhance communication between self and non-self cells...
June 21, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28624847/the-microbiome-gut-brain-axis-implications-for-schizophrenia-and-antipsychotic-induced-weight-gain
#8
REVIEW
S Kanji, T M Fonseka, V S Marshe, V Sriretnakumar, M K Hahn, D J Müller
With the emergence of knowledge implicating the human gut microbiome in the development and regulation of several physiological systems, evidence has accumulated to suggest a role for the gut microbiome in psychiatric conditions and drug response. A complex relationship between the enteric nervous system, the gut microbiota and the central nervous system has been described which allows for the microbiota to influence and respond to a variety of behaviors and psychiatric conditions. Additionally, the use of pharmaceuticals may interact with and alter the microbiota to potentially contribute to adverse effects of the drug...
June 17, 2017: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/28617197/chronic-early-life-stress-induced-by-limited-bedding-and-nesting-lbn-material-in-rodents-critical-considerations-of-methodology-outcomes-and-translational-potential
#9
Claire-Dominique Walker, Kevin G Bath, Marian Joels, Aniko Korosi, Muriel Larauche, Paul J Lucassen, Margaret J Morris, Charlis Raineki, Tania L Roth, Regina M Sullivan, Yvette Taché, Tallie Z Baram
The immediate and long term effects of exposure to early life stress (ELS) have been documented in humans and animal models. Even relatively brief periods of stress during the first 10 days of life in rodents can impact later behavioral regulation and the vulnerability to develop adult pathologies, in particular an impairment of cognitive functions and neurogenesis, but also modified social, emotional and conditioned fear responses. The development of preclinical models of ELS exposure allows the examination of mechanisms and testing of therapeutic approaches that are not possible in humans...
June 15, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28613252/are-the-gut-bacteria-telling-us-to-eat-or-not-to-eat-reviewing-the-role-of-gut-microbiota-in-the-etiology-disease-progression-and-treatment-of-eating-disorders
#10
REVIEW
Yan Y Lam, Sarah Maguire, Talia Palacios, Ian D Caterson
Traditionally recognized as mental illnesses, eating disorders are increasingly appreciated to be biologically-driven. There is a growing body of literature that implicates a role of the gut microbiota in the etiology and progression of these conditions. Gut bacteria may act on the gut-brain axis to alter appetite control and brain function as part of the genesis of eating disorders. As the illnesses progress, extreme feeding patterns and psychological stress potentially feed back to the gut ecosystem that can further compromise physiological, cognitive, and social functioning...
June 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28611513/brain-changes-detected-by-functional-magnetic-resonance-imaging-and-spectroscopy-in-patients-with-crohn-s-disease
#11
REVIEW
Kun Lv, Yi-Hong Fan, Li Xu, Mao-Sheng Xu
Crohn's disease (CD) is a chronic, non-specific granulomatous inflammatory disorder that commonly affects the small intestine and is a phenotype of inflammatory bowel disease (IBD). CD is prone to relapse, and its incidence displays a persistent increase in developing countries. However, the pathogenesis of CD is poorly understood, with some studies emphasizing the link between CD and the intestinal microbiota. Specifically, studies point to the brain-gut-enteric microbiota axis as a key player in the occurrence and development of CD...
May 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28610994/manganese-induced-sex-specific-gut-microbiome-perturbations-in-c57bl-6-mice
#12
Liang Chi, Bei Gao, Xiaoming Bian, Pengcheng Tu, Hongyu Ru, Kun Lu
Overexposure to manganese (Mn) leads to toxic effects, such as promoting the development of Parkinson's-like neurological disorders. The gut microbiome is deeply involved in immune development, host metabolism, and xenobiotics biotransformation, and significantly influences central nervous system (CNS) via the gut-brain axis, i.e. the biochemical signaling between the gastrointestinal tract and the CNS. However, it remains unclear whether Mn can affect the gut microbiome and its metabolic functions, particularly those linked to neurotoxicity...
June 10, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28601084/can-psychobiotics-intake-modulate-psychological-profile-and-body-composition-of-women-affected-by-normal-weight-obese-syndrome-and-obesity-a-double-blind-randomized-clinical-trial
#13
Antonino De Lorenzo, Micaela Costacurta, Giuseppe Merra, Paola Gualtieri, Giorgia Cioccoloni, Massimiliano Marchetti, Dimitrios Varvaras, Raffaella Docimo, Laura Di Renzo
BACKGROUND: Evidence of probiotics effects on gut function, brain activity and emotional behaviour were provided. Probiotics can have dramatic effects on behaviour through the microbiome-gut-brain axis, through vagus nerve. We investigated whether chronic probiotic intake could modulate psychological state, eating behaviour and body composition of normal weight obese (NWO) and preobese-obese (PreOB/OB) compared to normal weight lean women (NWL). METHODS: 60 women were enrolled...
June 10, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28596693/fecal-microbiota-transplantation-cured-epilepsy-in-a-case-with-crohn-s-disease-the-first-report
#14
Zhi He, Bo-Ta Cui, Ting Zhang, Pan Li, Chu-Yan Long, Guo-Zhong Ji, Fa-Ming Zhang
Fecal microbiota transplantation (FMT) is a promising strategy that involves reconstruction of gut microbiota. Recently, it has been considered as a treatment of Crohn's disease (CD) and certain neurological diseases. Here, to the best of our knowledge, we report the first case that used FMT to achieve remission of intestinal and neurological symptoms in a girl with CD and a 17-year history of epilepsy. During the 20 mo of follow-up, FMT has proved its efficacy in preventing relapse of seizures after withdrawing the antiepileptic drugs...
May 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28591631/gut-brain-glucose-signaling-in-energy-homeostasis
#15
REVIEW
Maud Soty, Amandine Gautier-Stein, Fabienne Rajas, Gilles Mithieux
Intestinal gluconeogenesis is a recently identified function influencing energy homeostasis. Intestinal gluconeogenesis induced by specific nutrients releases glucose, which is sensed by the nervous system surrounding the portal vein. This initiates a signal positively influencing parameters involved in glucose control and energy management controlled by the brain. This knowledge has extended our vision of the gut-brain axis, classically ascribed to gastrointestinal hormones. Our work raises several questions relating to the conditions under which intestinal gluconeogenesis proceeds and may provide its metabolic benefits...
June 6, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28576837/hypothalamic-inflammation-in-human-obesity-is-mediated-by-environmental-and-genetic-factors
#16
Carina Kreutzer, Sönke Peters, Dominik M Schulte, Daniela Fangmann, Kathrin Türk, Stephan Wolff, Thilo van Eimeren, Markus Ahrens, Jan Beckmann, Clemens Schafmayer, Thomas Becker, Tina Kerby, Axel Rohr, Christian Riedel, Femke-Anouska Heinsen, Frauke Degenhardt, Andre Franke, Philip Rosenstiel, Nana Zubek, Christian Henning, Sandra Freitag-Wolf, Astrid Dempfle, Aristea Psilopanagioti, Helen Petrou-Papadaki, Lennart Lenk, Olav Jansen, Stefan Schreiber, Matthias Laudes
Obesity is associated with hypothalamic inflammation (HI) in animal models. In the present study we examined the mediobasal hypothalamus (MBH) of 57 obese human subjects and 54 age- and sex- matched non-obese controls by MRI and analyzed the T2-hyperintensity as a measure of HI. Obese subjects exhibited T2-hyperintensity in the left but not the right MBH which was strongly associated with systemic low-grade inflammation. MRI-spectroscopy revealed the number of neurons in the left hypothalamic region to be similar in obese versus control subjects suggesting functional but not structural impairment due to the inflammatory process...
June 2, 2017: Diabetes
https://www.readbyqxmd.com/read/28560529/desire-for-core-tastes-decreases-after-sleeve-gastrectomy-a-single-center-longitudinal-observational-study-with-6-month-follow-up
#17
Daniel Gero, Fadia Dib, Lara Ribeiro-Parenti, Konstantinos Arapis, Denis Chosidow, Jean-Pierre Marmuse
INTRODUCTION: Laparoscopic sleeve gastrectomy (LSG) modifies gastrointestinal substances that control hunger and satiation via the brain-gut axis. A potential mechanism implicated in weight loss is the shift in food preferences. Our aim was to assess changes in taste preferences and their relationship to weight loss. METHODS: This is a prospective longitudinal observational study in 100 consecutive LSG patients. Questionnaire with photographs of tastes was administered before surgery, at postoperative (PO) day 6 and PO month 6...
May 30, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28557822/gut-microbiota-and-the-gut-brain-axis-new-insights-in-the-pathophysiology-of-metabolic-syndrome
#18
Nicolien de Clercq, Myrthe N Frissen, Albert K Groen, Max Nieuwdorp
OBJECTIVE: Emerging pre-clinical evidence has shown that the bidirectional signaling between the gastrointestinal tract and the brain, the so-called gut-brain axis, plays an important role in both host metabolism and behavior. In this review, we will discuss the potential mechanisms of the brain-gut axis in relation to the pathophysiology of metabolic syndrome. METHODS: A selective literature review was conducted to evaluate gastrointestinal and brain interactions...
May 27, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28556833/blockade-of-interleukin-6-receptor-in-the-periphery-promotes-rapid-and-sustained-antidepressant-actions-a-possible-role-of-gut-microbiota-brain-axis
#19
J-C Zhang, W Yao, C Dong, C Yang, Q Ren, M Ma, K Hashimoto
Depression is a common, severe and chronic psychiatric disease. Although the currently available antidepressants have been used in the treatment of depression, their beneficial effects are limited. Accumulating evidence suggests that pro-inflammatory cytokines such as interleukin-6 (IL-6) have an important role in the pathogenesis of depression. This study was undertaken to examine whether anti-mouse IL-6 receptor antibody (MR16-1) induces antidepressant effects in a social defeat stress model. Intravenous injection of MR16-1 induced rapid-onset and long-lasting antidepressant effects in susceptible mice after social defeat stress through its anti-inflammatory actions...
May 30, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28553399/the-gut-brain-axis-a-new-pathogenic-view-of-neurologic-symptoms-description-of-a-pediatric-case
#20
Raffaele Falsaperla, Catia Romano, Piero Pavone, Giovanna Vitaliti, Qian Yuan, Nazgole Motamed-Gorji, Riccardo Lubrano
Recent literature data have given emphasis to the relationship between gastrointestinal (GI) disorders and neurologic diseases, underlying a new pathogenic pathway: The so-called "gut-brain axis." Herein, authors report a case of a 10-month-old male infant, admitted for drug-resistant epilepsy, associated with irritable behavior and GI discomfort, secondary to cow's milk protein allergy. Seizures were described by parents as upward eye movements that were mostly deviated to the right and were associated with slight extension of his neck...
January 2017: Journal of Pediatric Neurosciences
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