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https://www.readbyqxmd.com/read/28816544/animal-inflammation-based-models-of-depression-and-their-application-to-drug-discovery
#1
Li Ma, Konstantin A Demin, Tatyana O Kolesnikova, Sergey L Kharsko, Xiaokang Zhu, Xiaodong Yuan, Cai Song, Darya A Meshalkina, Brian E Leonard, Li Tian, Allan V Kalueff
Depression, anxiety and other affective disorders are globally widespread and severely debilitating human brain diseases. Despite their high prevalence and mental health impact, affective pathogenesis is poorly understood, and often remains recurrent and resistant to treatment. The lack of efficient antidepressants and presently limited conceptual innovation necessitate novel approaches and new drug targets in the field of antidepressant therapy. Areas covered: Herein, the authors discuss the emerging role of neuro-immune interactions in affective pathogenesis, which can become useful targets for CNS drug discovery, including modulating neuroinflammatory pathways to alleviate affective pathogenesis...
August 17, 2017: Expert Opinion on Drug Discovery
https://www.readbyqxmd.com/read/28814395/fecal-concentrations-of-bacterially-derived-vitamin-k-forms-are-associated-with-gut-microbiota-composition-but-not-plasma-or-fecal-cytokine-concentrations-in-healthy-adults
#2
J Philip Karl, Mohsen Meydani, Junaidah B Barnett, Sally M Vanegas, Kathryn Barger, Xueyan Fu, Barry Goldin, Anne Kane, Helen Rasmussen, Pajau Vangay, Dan Knights, Satya S Jonnalagadda, Edward Saltzman, Susan B Roberts, Simin N Meydani, Sarah L Booth
Background: Emerging evidence suggests novel roles for bacterially derived vitamin K forms known as menaquinones in health and disease, which may be attributable in part to anti-inflammatory effects. However, the relevance of menaquinones produced by gut bacteria to vitamin K requirements and inflammation is undetermined.Objective: This study aimed to quantify fecal menaquinone concentrations and identify associations between fecal menaquinone concentrations and serum vitamin K concentrations, gut microbiota composition, and inflammation...
August 16, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28811841/bacteriophages-in-the-gastrointestinal-tract-and-their-implications
#3
Marzanna Łusiak-Szelachowska, Beata Weber-Dąbrowska, Ewa Jończyk-Matysiak, Renata Wojciechowska, Andrzej Górski
The gut microbiota plays an essential role in health and disease of humans. Bacteriophages are the most abundant members of the gut virobiota and display great diversity. Phages can translocate through the mucosa to lymph and internal organs and play a role as regulators of the bacterial population in the gut. Increasing abundance of phages in the gut mucosa may reduce colonization by bacteria. Moreover, phages may have an immunomodulatory role in the immune response in the human gut. The role of phages in inflammatory bowel disease (IBD) remains unknown...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/28811583/bacterial-diversity-among-four-healthcare-associated-institutes-in-taiwan
#4
Chang-Hua Chen, Yaw-Ling Lin, Kuan-Hsueh Chen, Wen-Pei Chen, Zhao-Feng Chen, Han-Yueh Kuo, Hsueh-Fen Hung, Chuan Yi Tang, Ming-Li Liou
Indoor microbial communities have important implications for human health, especially in health-care institutes (HCIs). The factors that determine the diversity and composition of microbiomes in a built environment remain unclear. Herein, we used 16S rRNA amplicon sequencing to investigate the relationships between building attributes and surface bacterial communities among four HCIs located in three buildings. We examined the surface bacterial communities and environmental parameters in the buildings supplied with different ventilation types and compared the results using a Dirichlet multinomial mixture (DMM)-based approach...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28808547/patterns-of-seasonality-and-group-membership-characterize-the-gut-microbiota-in-a-longitudinal-study-of-wild-verreaux-s-sifakas-propithecus-verreauxi
#5
Andrea Springer, Claudia Fichtel, Gabriel A Al-Ghalith, Flávia Koch, Katherine R Amato, Jonathan B Clayton, Dan Knights, Peter M Kappeler
The intestinal microbiota plays a major role in host development, metabolism, and health. To date, few longitudinal studies have investigated the causes and consequences of microbiota variation in wildlife, although such studies provide a comparative context for interpreting the adaptive significance of findings from studies on humans or captive animals. Here, we investigate the impact of seasonality, diet, group membership, sex, age, and reproductive state on gut microbiota composition in a wild population of group-living, frugi-folivorous primates, Verreaux's sifakas (Propithecus verreauxi)...
August 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28805460/case-study-of-homeopathic-bowel-nosode-remedies-for-dysbiotic-japanese-patients
#6
Yoko Uchiyama-Tanaka
BACKGROUND: The composition of intestinal microbiota is very important in human health. Gastrointestinal disturbances are among the symptoms commonly reported by individuals diagnosed with chronic diseases, such as inflammatory bowel disease, autism, and chronic fatigue syndrome. The effects of probiotics and prebiotics for dysbiosis have been reported in many studies. Bowel nosodes are homeopathic remedies made from human gut microbiota. OBJECTIVE: Bowel nosodes made from the intestinal bacteria of European patients from the 1900s were administered to Japanese patients suffering from gastrointestinal disturbances, such as constipation and diarrhea, to determine their therapeutic efficacy...
August 14, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28804508/a-psychology-of-the-human-brain-gut-microbiome-axis
#7
Andrew P Allen, Timothy G Dinan, Gerard Clarke, John F Cryan
In recent years, we have seen increasing research within neuroscience and biopsychology on the interactions between the brain, the gastrointestinal tract, the bacteria within the gastrointestinal tract, and the bidirectional relationship between these systems: the brain-gut-microbiome axis. Although research has demonstrated that the gut microbiota can impact upon cognition and a variety of stress-related behaviours, including those relevant to anxiety and depression, we still do not know how this occurs. A deeper understanding of how psychological development as well as social and cultural factors impact upon the brain-gut-microbiome axis will contextualise the role of the axis in humans and inform psychological interventions that improve health within the brain-gut-microbiome axis...
April 2017: Social and Personality Psychology Compass
https://www.readbyqxmd.com/read/28804483/the-impact-of-western-diet-and-nutrients-on-the-microbiota-and-immune-response-at-mucosal-interfaces
#8
REVIEW
Donjete Statovci, Mònica Aguilera, John MacSharry, Silvia Melgar
Recent findings point toward diet having a major impact on human health. Diets can either affect the gut microbiota resulting in alterations in the host's physiological responses or by directly targeting the host response. The microbial community in the mammalian gut is a complex and dynamic system crucial for the development and maturation of both systemic and mucosal immune responses. Therefore, the complex interaction between available nutrients, the microbiota, and the immune system are central regulators in maintaining homeostasis and fighting against invading pathogens at mucosal sites...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28803012/effect-of-fermented-milk-containing-lactobacillus-rhamnosus-sd11-on-oral-microbiota-of-healthy-volunteers-a-randomized-clinical-trial
#9
P Rungsri, N Akkarachaneeyakorn, M Wongsuwanlert, S Piwat, P Nantarakchaikul, R Teanpaisan
The aims of this study were to evaluate whether short-term consumption of fermented milk containing Lactobacillus rhamnosus SD11 affected levels of oral microbiota in vivo and whether L. rhamnosus SD11 could colonize in the human mouth. We also monitored for potential side effects of the probiotic. The applicability of using L. rhamnosus SD11 compared with Lactobacillus bulgaricus as a starter culture for fermented milk was evaluated. After informed consent, 43 healthy young adults were recruited and randomly assigned to either the probiotic or control group and received fermented milk containing L...
August 9, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28802306/ilsi-southeast-asia-region-conference-proceedings-the-gut-its-microbes-and-health-relevance-for-asia
#10
Yuan Kun Lee, Patricia Conway, Sven Pettersson, G Balakrish Nair, Ingrid Surono, Yusra Egayanti, Maria Sofia Amarra
BACKGROUND AND OBJECTIVES: The human being is a complex entity, involving interaction between microbes and the human host. Evidence shows that the nutritional value of food is influenced in part by the structure and operations of an individual's gut microbial community, and food in turn shapes the individual's microbiome. A conference was held to promote understanding of the intestinal microbiome and its implications for health and disease, particularly among Asian populations. METHODS AND STUDY DESIGN: Papers describing 1) the intestinal ecosystem in Asian populations, 2) changes in intestinal microbiota through life and its effects, 3) the Asian gut microbiota in disease conditions, 4) indigenous probiotics to maintain a healthy gut microbiota, 5) probiotic regulation in an Asian country, and 6) the results of a panel discussion are included in this report...
2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28801639/investigation-into-the-stability-and-culturability-of-chinese-enterotypes
#11
Yeshi Yin, Bin Fan, Wei Liu, Rongrong Ren, Huahai Chen, Shaofeng Bai, Liying Zhu, Gang Sun, Yunsheng Yang, Xin Wang
Although many gut microbial enterotypes have been reported in Europe, Africa and the U.S., their effects on human health are still not yet clear. Culturing gut microbial enterotypes in vitro will be helpful to study their effects and applications. Here, fecal samples from 13 healthy Chinese volunteers were collected and subjected to next-generation sequencing. The results showed that seven of these samples belong to the Bacteroides enterotype and another six to the Prevotella enterotype. Stability of these Chinese gut microbial enterotypes was also evaluated...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28800135/network-analysis-of-gut-microbiota-literature-an-overview-of-the-research-landscape-in-non-human-animal-studies
#12
Emily L Pascoe, Heidi C Hauffe, Julian R Marchesi, Sarah E Perkins
A wealth of human studies have demonstrated the importance of gut microbiota to health. Research on non-human animal gut microbiota is now increasing, but what insight does it provide? We reviewed 650 publications from this burgeoning field (2009-2016) and determined that animals driving this research were predominantly 'domestic' (48.2%), followed by 'model' (37.5%), with least studies on 'wild' (14.3%) animals. Domestic studies largely experimentally perturbed microbiota (81.8%) and studied mammals (47.9%), often to improve animal productivity...
August 11, 2017: ISME Journal
https://www.readbyqxmd.com/read/28799899/the-gut-microbiota-food-science-and-human-nutrition-a-timely-marriage
#13
REVIEW
Michael J Barratt, Carlito Lebrilla, Howard-Yana Shapiro, Jeffrey I Gordon
Analytic advances are enabling more precise definitions of the molecular composition of key food staples incorporated into contemporary diets and how the nutrient landscapes of these staples vary as a function of cultivar and food processing methods. This knowledge, combined with insights about the interrelationship between consumer microbiota configurations and biotransformation of food ingredients, should have a number of effects on agriculture, food production, and strategies for improving the nutritional value of foods and health status...
August 9, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28798503/working-up-a-good-sweat-the-challenges-of-standardising-sweat-collection-for-metabolomics-analysis
#14
REVIEW
Joy N Hussain, Nitin Mantri, Marc M Cohen
INTRODUCTION: Human sweat is a complex biofluid of interest to diverse scientific fields. Metabolomics analysis of sweat promises to improve screening, diagnosis and self-monitoring of numerous conditions through new applications and greater personalisation of medical interventions. Before these applications can be fully developed, existing methods for the collection, handling, processing and storage of human sweat need to be revised. This review presents a cross-disciplinary overview of the origins, composition, physical characteristics and functional roles of human sweat, and explores the factors involved in standardising sweat collection for metabolomics analysis...
February 2017: Clinical Biochemist. Reviews
https://www.readbyqxmd.com/read/28796176/bridging-the-gap-between-gut-microbial-dysbiosis-and-cardiovascular-diseases
#15
REVIEW
Kimberley Lau, Varun Srivatsav, Ayesha Rizwan, Andrew Nashed, Rui Liu, Rui Shen, Mahmood Akhtar
The human gut is heavily colonized by a community of microbiota, primarily bacteria, that exists in a symbiotic relationship with the host and plays a critical role in maintaining host homeostasis. The consumption of a high-fat (HF) diet has been shown to induce gut dysbiosis and reduce intestinal integrity. Recent studies have revealed that dysbiosis contributes to the progression of cardiovascular diseases (CVDs) by promoting two major CVD risk factors-atherosclerosis and hypertension. Imbalances in host-microbial interaction impair homeostatic mechanisms that regulate health and can activate multiple pathways leading to CVD risk factor progression...
August 10, 2017: Nutrients
https://www.readbyqxmd.com/read/28791008/free-fatty-acids-profiles-are-related-to-gut-microbiota-signatures-and-short-chain-fatty-acids
#16
Javier Rodríguez-Carrio, Nuria Salazar, Abelardo Margolles, Sonia González, Miguel Gueimonde, Clara G de Los Reyes-Gavilán, Ana Suárez
A growing body of evidence highlights the relevance of free fatty acids (FFA) for human health, and their role in the cross talk between the metabolic status and immune system. Altered serum FFA profiles are related to several metabolic conditions, although the underlying mechanisms remain unclear. Recent studies have highlighted the link between gut microbiota and host metabolism. However, although most of the studies have focused on different clinical conditions, evidence on the role of these mediators in healthy populations is lacking...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28790981/determination-of-resistant-starch-assimilating-bacteria-in-fecal-samples-of-mice-by-in-vitro-rna-based-stable-isotope-probing
#17
Elena Herrmann, Wayne Young, Douglas Rosendale, Ralf Conrad, Christian U Riedel, Markus Egert
The impact of the intestinal microbiota on human health is becoming increasingly appreciated in recent years. In consequence, and fueled by major technological advances, the composition of the intestinal microbiota in health and disease has been intensively studied by high throughput sequencing approaches. Observations linking dysbiosis of the intestinal microbiota with a number of serious medical conditions including chronic inflammatory disorders and allergic diseases suggest that restoration of the composition and activity of the intestinal microbiota may be a treatment option at least for some of these diseases...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28790923/gut-microbiome-response-to-sucralose-and-its-potential-role-in-inducing-liver-inflammation-in-mice
#18
Xiaoming Bian, Liang Chi, Bei Gao, Pengcheng Tu, Hongyu Ru, Kun Lu
Sucralose is the most widely used artificial sweetener, and its health effects have been highly debated over the years. In particular, previous studies have shown that sucralose consumption can alter the gut microbiota. The gut microbiome plays a key role in processes related to host health, such as food digestion and fermentation, immune cell development, and enteric nervous system regulation. Inflammation is one of the most common effects associated with gut microbiome dysbiosis, which has been linked to a series of human diseases, such as diabetes and obesity...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28783509/dysbiotic-proteobacteria-expansion-a-microbial-signature-of-epithelial-dysfunction
#19
REVIEW
Yael Litvak, Mariana X Byndloss, Renée M Tsolis, Andreas J Bäumler
A balanced gut microbiota is important for health, but the mechanisms maintaining homeostasis are incompletely understood. Anaerobiosis of the healthy colon drives the composition of the gut microbiota towards a dominance of obligate anaerobes, while dysbiosis is often associated with a sustained increase in the abundance of facultative anaerobic Proteobacteria, indicative of a disruption in anaerobiosis. The colonic epithelium is hypoxic, but intestinal inflammation or antibiotic treatment increases epithelial oxygenation in the colon, thereby disrupting anaerobiosis to drive a dysbiotic expansion of facultative anaerobic Proteobacteria through aerobic respiration...
August 4, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/28780386/salivary-microbiome-in-non-oral-disease-a-summary-of-evidence-and-commentary
#20
REVIEW
Aneesha Acharya, Yuki Chan, Supriya Kheur, Li Jian Jin, Rory M Watt, Nikos Mattheos
OBJECTIVE: The advent of high-throughput sequencing and 'omic' technologies is facilitating an 'open-ended' understanding of the human microbial community and its interplay with health. This commentary aims to present key perspectives and summarize current evidence from metagenomic studies of salivary microbiota in relation to general health and systemic diseases. DESIGN: A narrative review of studies that described salivary microbiome composition in relation to various general health conditions was conducted and the main results were summarized...
July 29, 2017: Archives of Oral Biology
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