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https://www.readbyqxmd.com/read/28819457/type-1-diabetes-urinary-proteomics-and-protein-network-analysis-support-perturbation-of-lysosomal-function
#1
Harinder Singh, Yanbao Yu, Moo-Jin Suh, Manolito G Torralba, Robert D Stenzel, Andrey Tovchigrechko, Vishal Thovarai, Derek M Harkins, Seesandra V Rajagopala, Whitney Osborne, Fran R Cogen, Paul B Kaplowitz, Karen E Nelson, Ramana Madupu, Rembert Pieper
While insulin replacement therapy restores the health and prevents the onset of diabetic complications (DC) for many decades, some T1D patients have elevated hemoglobin A1c values suggesting poor glycemic control, a risk factor of DC. We surveyed the stool microbiome and urinary proteome of a cohort of 220 adolescents and children, half of which had lived with T1D for an average of 7 years and half of which were healthy siblings. Phylogenetic analysis of the 16S rRNA gene did not reveal significant differences in gut microbial alpha-diversity comparing the two cohorts...
2017: Theranostics
https://www.readbyqxmd.com/read/28818559/-to-boldly-go-where-no-one-has-gone-before
#2
Keith W Kelley
Americans are suffering from a culture of taking pills. Six out of ten Americans utilize at least one prescription drug, and more than one in ten use five or more prescription medicines. Although this torrent of taking pills is already high, drug use in the USA has not yet crested. Prescription drugs have specific targets, but often they adversely affect other tissues and organs. In keeping with the mission of the recently named National Center for Complementary and Integrative Health (NCCIH), Brain, Behavior, and Immunity searches for the underlying cause and potential efficacy of both drug and non-drug interventions...
August 14, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28818050/administration-of-two-probiotic-strains-during-early-childhood-does-not-affect-the-endogenous-gut-microbiota-composition-despite-probiotic-proliferation
#3
Martin Frederik Laursen, Rikke Pilmann Laursen, Anni Larnkjær, Kim F Michaelsen, Martin Iain Bahl, Tine Rask Licht
BACKGROUND: Probiotics are increasingly applied to prevent and treat a range of infectious, immune related and gastrointestinal diseases. Despite this, the mechanisms behind the putative effects of probiotics are poorly understood. One of the suggested modes of probiotic action is modulation of the endogenous gut microbiota, however probiotic intervention studies in adults have failed to show significant effects on gut microbiota composition. The gut microbiota of young children is known to be unstable and more responsive to external factors than that of adults...
August 17, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28816544/animal-inflammation-based-models-of-depression-and-their-application-to-drug-discovery
#4
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/28815394/shared-dysregulation-of-homeostatic-brain-body-pathways-in-depression-and-type-2-diabetes
#5
REVIEW
Claire J Hoogendoorn, Juan F Roy, Jeffrey S Gonzalez
PURPOSE OF REVIEW: The purpose of this review is to provide an overview of shared dysregulation of the hypothalamic-pituitary-adrenal (HPA) and brain-gut-microbiome (BGM) axes associated with depression and type 2 diabetes (T2D). Clinical implications and future research are also discussed. RECENT FINDINGS: Both depression and T2D are associated with dysregulation of the HPA and BGM axes. These pathways regulate immune function, glucose metabolism, and sleep, which are altered in both illnesses...
August 16, 2017: Current Diabetes Reports
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
#6
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
#7
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/28808780/non-cns-pathogenic-origin-of-parkinson-s-disease
#8
Humdoon Choudhry, Lawrence C Perlmuter
The gut with its variety of microbiota may serve as an etiological origin of diseases. Gut microbes may also play a role in the pathogenesis of diseases beyond their simple nutritional maintenance and support. For example, gut protein aggregation, possibly aided by microbes as well as nasal influences, might be linked to disease that may move to the brain through the vagus nerve. To this end, Braak has offered a "dual-hit" hypothesis that proposes a novel etiology for Parkinson's disease (PD). The hypothesis places the initial origin of the disease in the nose and the gastrointestinal tract (GI) after infection by an unknown pathogen that could aggregate in the gut and then eventually spread to the brain via the autonomic plexuses...
August 14, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28808691/fluoride-depletes-acidogenic-taxa-in-oral-but-not-gut-microbial-communities-in-mice
#9
Koji Yasuda, Tiffany Hsu, Carey A Gallini, Lauren J Mclver, Emma Schwager, Andy Shi, Casey R DuLong, Randall N Schwager, Galeb S Abu-Ali, Eric A Franzosa, Wendy S Garrett, Curtis Huttenhower, Xochitl C Morgan
Fluoridation of drinking water and dental products prevents dental caries primarily by inhibiting energy harvest in oral cariogenic bacteria (such as Streptococcus mutans and Streptococcus sanguinis), thus leading to their depletion. However, the extent to which oral and gut microbial communities are affected by host fluoride exposure has been underexplored. In this study, we modeled human fluoride exposures to municipal water and dental products by treating mice with low or high levels of fluoride over a 12-week period...
July 2017: MSystems
https://www.readbyqxmd.com/read/28808688/adaptive-mistranslation-accelerates-the-evolution-of-fluconazole-resistance-and-induces-major-genomic-and-gene-expression-alterations-in-candida-albicans
#10
Tobias Weil, Rodrigo Santamaría, Wanseon Lee, Johan Rung, Noemi Tocci, Darren Abbey, Ana R Bezerra, Laura Carreto, Gabriela R Moura, Mónica Bayés, Ivo G Gut, Attila Csikasz-Nagy, Duccio Cavalieri, Judith Berman, Manuel A S Santos
Regulated erroneous protein translation (adaptive mistranslation) increases proteome diversity and produces advantageous phenotypic variability in the human pathogen Candida albicans. It also increases fitness in the presence of fluconazole, but the underlying molecular mechanism is not understood. To address this question, we evolved hypermistranslating and wild-type strains in the absence and presence of fluconazole and compared their fluconazole tolerance and resistance trajectories during evolution. The data show that mistranslation increases tolerance and accelerates the acquisition of resistance to fluconazole...
July 2017: MSphere
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
#11
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/28807841/racial-disparity-in-gastrointestinal-cancer-risk
#12
REVIEW
Hassan Ashktorab, Sonia S Kupfer, Hassan Brim, John M Carethers
Cancer from the gastrointestinal tract and its associated excretory organs will occur in over 300,000 Americans in 2017, with colorectal cancer responsible for over forty percent of that burden; there will be over 150,000 deaths from this group of cancers in the same time period. Disparities among subgroups related to these cancers' incidence and mortality exist. The epidemiology and risk factors associated with each cancer bear out differences for racial groups in the United States. Esophageal adenocarcinoma is more frequent in Non-Hispanic Whites, whereas esophageal squamous cell carcinoma with risk factors of tobacco and alcohol is more frequent among Blacks...
August 11, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28806201/brain-gut-microbiota-axis-and-mental-health
#13
Timothy G Dinan, John F Cryan
OBJECTIVE: The brain-gut-microbiota axis has been put forward as a new paradigm in neuroscience, which may be of relevance to mental illness. The mechanisms of signal transmission in the brain-gut-microbiota axis are complex and involve bidirectional communications which enables gut microbes to communicate with the brain, and the brain to communicate with the microbes. This review assesses the potential usefulness and limitations of the paradigm. METHODS: A selective literature review was conducted to evaluate the current knowledge in clinical and pre-clinical brain-gut-microbiota interactions as related to psychiatric disorders...
August 11, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28805735/dietary-propolis-ameliorates-dextran-sulfate-sodium-induced-colitis-and-modulates-the-gut-microbiota-in-rats-fed-a-western-diet
#14
Kai Wang, Xiaolu Jin, Mengmeng You, Wenli Tian, Richard K Le Leu, David L Topping, Michael A Conlon, Liming Wu, Fuliang Hu
Propolis is an important hive product and considered beneficial to health. However, evidence of its potential for improving gut health is still lacking. Here we use rats to examine whether dietary supplementation with propolis could be used as a therapy for ulcerative colitis. Rats were fed with a Western style diet alone (controls) or supplemented with different amounts of Chinese propolis (0.1%, 0.2%, and 0.3%) to examine effects on acute colitis induced by 3% dextran sulphate sodium (DSS) in drinking water...
August 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28805460/case-study-of-homeopathic-bowel-nosode-remedies-for-dysbiotic-japanese-patients
#15
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
#16
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
#17
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/28802306/ilsi-southeast-asia-region-conference-proceedings-the-gut-its-microbes-and-health-relevance-for-asia
#18
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
#19
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/28800585/comparative-pathogenomics-of-clostridium-tetani
#20
Jonathan E Cohen, Rong Wang, Rong-Fong Shen, Wells W Wu, James E Keller
Clostridium tetani and Clostridium botulinum produce two of the most potent neurotoxins known, tetanus neurotoxin and botulinum neurotoxin, respectively. Extensive biochemical and genetic investigation has been devoted to identifying and characterizing various C. botulinum strains. Less effort has been focused on studying C. tetani likely because recently sequenced strains of C. tetani show much less genetic diversity than C. botulinum strains and because widespread vaccination efforts have reduced the public health threat from tetanus...
2017: PloS One
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