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https://www.readbyqxmd.com/read/29673868/corrigendum-to-acute-and-repeated-exposure-to-social-stress-reduces-gut-microbiota-diversity-in-syrian-hamsters-behav-brain-res-345-2018-39-48
#1
Katherine A Partrick, Benoit Chassaing, Linda Q Beach, Katharine E McCann, Andrew T Gewirtz, Kim L Huhman
Social stress can promote a variety of neuropsychiatric illnesses, many of which have a high co-morbidity with gastrointestinal disorders. Recent data indicate that gastrointestinal microbiota can affect their host's brain and behavior. Syrian hamsters are ideal subjects for social stress research because they are territorial, aggressive, and rapidly form dominant/subordinate relationships. The purpose of this study was to determine if exposure to social stress in hamsters alters gut microbiota in dominants and subordinates after an agonistic encounter and if pre-stress gut microbiota composition is correlated with the outcome of such a conflict...
April 16, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29673295/gut-microbiota-metabolism-and-psychopathology-a-critical-review-and-novel-perspectives
#2
Robin N Groen, Nicolien C de Clercq, Max Nieuwdorp, H J Rogier Hoenders, Albert K Groen
Psychiatric disorders are often associated with metabolic comorbidities. However, the mechanisms through which metabolic and psychiatric disorders are connected remain unclear. Pre-clinical studies in rodents indicate that the bidirectional signaling between the intestine and the brain, the so-called microbiome-gut-brain axis, plays an important role in the regulation of both metabolism and behavior. The gut microbiome produces a vast number of metabolites that may be transported into the host and play a part in homeostatic control of metabolism as well as brain function...
April 20, 2018: Critical Reviews in Clinical Laboratory Sciences
https://www.readbyqxmd.com/read/29671359/current-evidence-linking-diet-to-gut-microbiota-and-brain-development-and-function
#3
Florencia Ceppa, Andrea Mancini, Kieran Tuohy
The gut:brain axis is emerging as an important information highway linking the foods we eat with neurophysiological development and functions. Some gut microorganisms have shown to alleviate anxiety and depression, improve cognitive performance and play a role in brain development in early life. However, most studies were conducted in laboratory animals and these findings await confirmation in carefully designed human interventions. Similarly, little attention has been given to how diet:microbe interactions within the gut can impact on neurotransmitter production or their subsequent biological effects within the nervous system...
April 19, 2018: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/29668250/the-effects-of-baicalein-on-cortical-pro-inflammatory-cytokines-and-the-intestinal-microbiome-in-senescence-accelerated-mouse-prone-8
#4
Li Gao, Jia-Qi Li, Yu-Zhi Zhou, Xudong Huang, Xue-Mei Qin, Guan-Hua Du
Baicalein, a flavonoid derived from the roots of Scutellariae baicalensis Georgi, has shown health benefits for an array of human diseases including dementia. The senescence-accelerated mouse prone 8 (SAMP8) strain is extensively used as a senile dementia model. To further investigate the effects of baicalein in SAMP8 mice, behavioral testing, biochemical detection and gut microbiota analysis were performed. The results demonstrated that treatment with baicalein ameliorated the senescence status of the SAMP8 mice, as manifested by reducing the grading score of senescence...
April 18, 2018: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29662088/tracing-of-the-fecal-microbiota-of-commercial-pigs-at-five-growth-stages-from-birth-to-shipment
#5
Geon Goo Han, Jun-Yeong Lee, Gwi-Deuk Jin, Jongbin Park, Yo Han Choi, Sang-Kee Kang, Byung Jo Chae, Eun Bae Kim, Yun-Jaie Choi
The intestinal microbiota affect various physiological traits of host animals such as brain development, obesity, age, and the immune system. In the swine industry, understanding the relationship between intestinal microbiota and growth stage is essential because growth stage is directly related to the feeding system of pigs, thus we studied the intestinal microbiota of 32 healthy pigs across five sows at 10, 21, 63, 93, and 147 d of ages. The intestinal microbiota were altered with growth of pigs and were separated into three distinct clusters...
April 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29660942/the-role-of-the-gut-microbiota-in-the-metabolism-of-polyphenols-as-characterized-by-gnotobiotic-mice
#6
Giulio Maria Pasinetti, Risham Singh, Susan Westfall, Francis Herman, Jeremiah Faith, Lap Ho
A growing body of experimental data suggests that microbes in the gut influence behavior and can alter brain physiology and neurochemistry. Although promising, researchers are only starting to understand the potential of the gut microbiota for use in neurological disease. Recent evidence demonstrated that gastrointestinal activities are linked to mood disorders such as anxiety, depression, and most recently, cognitive functions in age-related neurodegenerative disorders. Studies from our group and others are uncovering new evidence suggesting that the gut microbiota plays a crucial role in the metabolism and bioavailability of certain dietary compounds and synthetic drugs...
April 11, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29656644/tuna-oil-alleviate-d-galactose-induced-aging-in-mice-accompanied-by-modulating-gut-microbiota-and-brain-protein-expression
#7
Dijun Zhang, Jiaojiao Han, Yanyan Li, Bei Yuan, Jun Zhou, Lingzhi Cheong, Ye Li, Chenyang Lu, XiuRong Su
To discern whether tuna oil modulates the expression of brain proteins and the gut microbiota structure during aging induced by D-galactose, we generated an aging mouse model with D-galactose treatment, and the mice showed aging and memory deterioration symptoms according to physiological and biochemical indices. Treatment with different doses of tuna oil alleviated the symptoms, the high dose showed a better effect. Subsequently, brain proteomic analysis showed the differentially expressed proteins were involved in damaged synaptic system repairment and signal transduction system enhancement...
April 15, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29651541/monovalerin-and-trivalerin-increase-brain-acetic-acid-decrease-liver-succinic-acid-and-alter-gut-microbiota-in-rats-fed-high-fat-diets
#8
Thao Duy Nguyen, Olena Prykhodko, Frida Fåk Hållenius, Margareta Nyman
PURPOSE: Short-chain fatty acids (SCFA) are known for their anti-inflammatory properties and may also prevent against the development of metabolic diseases. This study investigated possible effects of two valeric acid esters, monovalerin (MV) and trivalerin (TV) in rats fed high-fat diets. METHODS: Four groups of rats were given a low-fat diet (LF) or a high-fat control diet (HFC) with or without supplementation of MV or TV (5 g/kg) for 3 weeks (n = 7/group)...
April 12, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29651421/when-the-nose-doesn-t-know-canine-olfactory-function-associated-with-health-management-and-potential-links-to-microbiota
#9
REVIEW
Eileen K Jenkins, Mallory T DeChant, Erin B Perry
The impact of health, management, and microbiota on olfactory function in canines has not been examined in review. The most important characteristic of the detection canine is its sense of smell. Olfactory receptors are primarily located on the ethmoturbinates of the nasal cavity. The vomeronasal organ is an additional site of odor detection that detects chemical signals that stimulate behavioral and/or physiological changes. Recent advances in the genetics of olfaction suggest that genetic changes, along with the unique anatomy and airflow of the canine nose, are responsible for the macrosmia of the species...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29630137/the-cardiovascular-macrophage-a-missing-link-between-gut-microbiota-and-cardiovascular-diseases
#10
X Chen, L Zheng, Y-Q Zheng, Q-G Yang, Y Lin, F-H Ni, Z-H Li
The prevalence of cardiovascular diseases is on the rise. Interventions that would aid prevention or treatment of these diseases are essential. The microbes residing in the gut, collectively called "gut microbiota", produce a plethora of compounds that enter the bloodstream and affect the cardiovascular system. Signals ascending from gut microbiome are believed to modulate differentiation and functional activity of macrophages residing in perivascular tissue, atherosclerotic plaques, and perivascular areas of the brain...
March 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29628357/frailty-and-the-gut
#11
REVIEW
Antonio Di Sabatino, Marco Vincenzo Lenti, Lisa Cammalleri, Gino Roberto Corazza, Alberto Pilotto
Frailty, which is a syndrome that encompasses losses in physical, psychological and social domains, is responsible for enhanced vulnerability to endogenous and/or exogenous stressors. Frailty is a public health problem for an ageing society; however, it is poorly understood and often under-recognised in clinical settings. In particular, the impact of frailty on either intestinal functions, i.e. immune response, permeability, and absorption, or gut microbiota composition is as yet mostly unexplored. A better comprehension of the intestinal dysfunction occurring in the elderly would help in clarifying the mechanisms predisposing frail patients to a higher risk of infectious or inflammatory events...
March 16, 2018: Digestive and Liver Disease
https://www.readbyqxmd.com/read/29628046/mechanisms-underlying-the-effects-of-n-3-polyunsaturated-fatty-acids-on-fear-memory-processing-and-their-hypothetical-effects-on-fear-of-cancer-recurrence-in-cancer-survivors
#12
REVIEW
R Okubo, C Chen, M Sekiguchi, K Hamazaki, Y J Matsuoka
The relationship of n-3 polyunsaturated fatty acids (PUFAs) and gut microbiota with brain function has been extensively reported. Here, we review how n-3 polyunsaturated fatty acids affect fear memory processing. n-3 PUFAs may improve dysfunctional fear memory processing via immunomodulation/anti-inflammation, increased BDNF, upregulated adult neurogenesis, modulated signal transduction, and microbiota-gut-brain axis normalization. We emphasize how n-3 PUFAs affect this axis and also focus on the hypothetical effects of PUFAs in fear of cancer recurrence (FCR), the primary psychological unmet need of cancer survivors...
April 2018: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/29623833/new-therapeutic-drugs-from-bioactive-natural-molecules-the-role-of-gut-microbiota-metabolism-in-neurodegenerative-diseases
#13
Francesco Di Meo, Stella Donato, Alba Di Pardo, Vittorio Maglione, Stefania Filosa, Stefania Crispi
The gut-brain axis is considered a neuroendocrine system, which connects brain and gastrointestinal tract and plays an important role in stress response. The homeostasis of gut-brain axis is important for healthy conditions and its alterations are associated to neurological disorders and neurodegenerative diseases. Gut microbiota is a dynamic ecosystem that can be altered by external factors such as diet composition, antibiotics or xenobiotics. Recent advances in gut microbiota analyses indicate that the gut bacterial community plays a key role in maintaining normal brain functions...
April 3, 2018: Current Drug Metabolism
https://www.readbyqxmd.com/read/29617356/clostridium-bacteria-and-autism-spectrum-conditions-a-systematic-review-and-hypothetical-contribution-of-environmental-glyphosate-levels
#14
REVIEW
Isadora Argou-Cardozo, Fares Zeidán-Chuliá
Nowadays, there seems to be a consensus about the multifactorial nature of autism spectrum disorders (ASD). The literature provides hypotheses dealing with numerous environmental factors and genes accounting for the apparently higher prevalence of this condition. Researchers have shown evidence regarding the impact of gut bacteria on neurological outcomes, altering behavior and potentially affecting the onset and/or severity of psychiatric disorders. Pesticides and agrotoxics are also included among this long list of ASD-related environmental stressors...
April 4, 2018: Medical Sciences: Open Access Journal
https://www.readbyqxmd.com/read/29616501/effectiveness-of-omega-3-polyunsaturated-fatty-acids-against-microbial-pathogens
#15
Warren Chanda, Thomson P Joseph, Xue-Fang Guo, Wen-Dong Wang, Min Liu, Miza S Vuai, Arshad A Padhiar, Min-Tao Zhong
Microorganisms provide both beneficial and harmful effects to human beings. Beneficial effects come from the symbiotic relationship that exists between humans and microbiota, but then several human illnesses have turned some friendly microbes into opportunistic pathogens, causing several microbial-related diseases. Various efforts have been made to create and utilize antimicrobial agents in the treatment and prevention of these infections, but such efforts have been hampered by the emergence of antimicrobial resistance...
2018: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/29615954/microbiome-mediated-upregulation-of-microrna-146a-in-sporadic-alzheimer-s-disease
#16
Yuhai Zhao, Walter J Lukiw
The first indication of a potential mechanistic link between the pathobiology of the human gastrointestinal (GI)-tract microbiome and its contribution to the pathogenetic mechanisms of sporadic Alzheimer's disease (AD) came a scant 4 years ago (1). Ongoing research continues to strengthen the hypothesis that neurotoxic microbial-derived components of the GI tract microbiome can cross aging GI tract and blood-brain barriers and contribute to progressive proinflammatory neurodegeneration, as exemplified by the AD-process...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29615850/interplay-between-the-gut-brain-axis-obesity-and-cognitive-function
#17
REVIEW
Ana Agustí, Maria P García-Pardo, Inmaculada López-Almela, Isabel Campillo, Michael Maes, Marina Romaní-Pérez, Yolanda Sanz
Obesity continues to be one of the major public health problems due to its high prevalence and co-morbidities. Common co-morbidities not only include cardiometabolic disorders but also mood and cognitive disorders. Obese subjects often show deficits in memory, learning and executive functions compared to normal weight subjects. Epidemiological studies also indicate that obesity is associated with a higher risk of developing depression and anxiety, and vice versa . These associations between pathologies that presumably have different etiologies suggest shared pathological mechanisms...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29615691/effects-of-intestinal-microbiota-on-brain-development-in-humanized-gnotobiotic-mice
#18
Jing Lu, Lei Lu, Yueyue Yu, Joanne Cluette-Brown, Camilia R Martin, Erika C Claud
Poor growth in the Neonatal Intensive Care Unit is associated with an increased risk for poor neurodevelopmental outcomes for preterm infants, however the mechanism is unclear. The microbiome has increasingly been recognized as a modifiable environmental factor to influence host development. Here we explore the hypothesis that the microbiome influences both growth phenotype and brain development. A germ free mouse transfaunation model was used to examine the effects of preterm infant microbiotas known to induce either high growth or low growth phenotypes on postnatal brain development...
April 3, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29614774/the-brain-intestinal-mucosa-appendix-microbiome-brain-loop
#19
Luis Vitetta, Gemma Vitetta, Sean Hall
The brain and the gut are connected from early fetal life. The mother's exposure to microbial molecules is thought to exert in utero developmental effects on the fetus. These effects could importantly underpin the groundwork for subsequent pathophysiological mechanisms for achieving immunological tolerance and metabolic equilibrium post birth, events that continue through to 3-4 years of age. Furthermore, it is understood that the microbiome promotes cues that instruct the neonate's mucosal tissues and skin in the language of molecular and cellular biology...
April 1, 2018: Diseases (Basel)
https://www.readbyqxmd.com/read/29609110/psychoneuroimmunology-and-immunopsychiatry-of-zebrafish
#20
REVIEW
Murilo S de Abreu, Ana C V V Giacomini, Rodrigo Zanandrea, Bruna E Dos Santos, Rafael Genario, Gabriel G de Oliveira, Ashton J Friend, Tamara G Amstislavskaya, Allan V Kalueff
Despite the high prevalence of neural and immune disorders, their etiology and molecular mechanisms remain poorly understood. As the zebrafish (Danio rerio) is increasingly utilized as a powerful model organism in biomedical research, mounting evidence suggests these fish as a useful tool to study neural and immune mechanisms and their interplay. Here, we discuss zebrafish neuro-immune mechanisms and their pharmacological and genetic modulation, the effect of stress on cytokines, as well as relevant models of microbiota-brain interplay...
March 22, 2018: Psychoneuroendocrinology
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