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Gut, microbiota, bacteria, probiotics

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https://www.readbyqxmd.com/read/28806201/brain-gut-microbiota-axis-and-mental-health
#1
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/28805460/case-study-of-homeopathic-bowel-nosode-remedies-for-dysbiotic-japanese-patients
#2
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/28797931/changes-in-the-gut-microbial-communities-following-addition-of-walnuts-to-the-diet
#3
Lauri O Byerley, Derrick Samuelson, Eugene Blanchard, Meng Luo, Brittany N Lorenzen, Shelia Banks, Monica A Ponder, David A Welsh, Christopher M Taylor
Walnuts are rich in omega-3 fatty acids, phytochemicals and antioxidants making them unique compared to other foods. Consuming walnuts has been associated with health benefits including a reduced risk of heart disease and cancer. Dysbiosis of the gut microbiome has been linked to several chronic diseases. One potential mechanism by which walnuts may exert their health benefit is through modifying the gut microbiome. This study identified the changes in the gut microbial communities that occur following the inclusion of walnuts in the diet...
July 9, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28795339/impact-of-nasopharyngeal-microbiota-on-the-development-of-respiratory-tract-diseases
#4
REVIEW
S Esposito, N Principi
Knowledge of whether and how respiratory microbiota composition can prime the immune system and provide colonisation resistance, limiting consecutive pathobiont overgrowth and infections, is essential to improving the prevention and therapy of respiratory disorders. Modulation of dysbiotic ecosystems or reconstitution of missing microbes might be a possible measure to reduce respiratory diseases. The aim of this review is to analyse the role of nasopharyngeal microbiota in the development of respiratory tract disease in paediatric-age subjects...
August 9, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28794630/probiotics-protect-mice-from-cocrmo-particles-induced-osteolysis
#5
Zhenheng Wang, Kaiwen Xue, Maosheng Bai, Zhantao Deng, Jingjing Gan, Gang Zhou, Hongbo Qian, Nirong Bao, Jianning Zhao
Wear particle-induced inflammatory osteolysis is the primary cause of aseptic loosening, which is the most common reason for total hip arthroplasty (THA) failure in the med- and long term. Recent studies have suggested an important role of gut microbiota (GM) in modulating the host metabolism and immune system, leading to alterations in bone mass. Probiotic bacteria administered in adequate amounts can alter the composition of GM and confer health benefits to the host. Given the inflammatory osteolysis that occurs in wear debris-induced prosthesis loosening, we examined whether the probiotic Lactobacillus casei could reduce osteolysis in a mouse calvarial resorption model...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28783248/coupling-metagenomics-with-cultivation-to-select-host-specific-probiotic-microorganisms-for-subtropical-aquaculture
#6
Jinming Cui, Minfeng Xiao, Mingzhu Liu, Zuowei Wang, Furong Liu, Liang Guo, Hailin Meng, Honggang Zhang, Jinfang Yang, Deng Deng, Shuangqiang Huang, Yingfei Ma, Chenli Liu
AIMS: To demonstrate a non-empirical workflow to select host-specific probiotics for aquaculture industry. METHODS AND RESULTS: By using both culture-dependent and -independent methods, we have systematically investigated, for the first time, the gut microbiota of twelve subtropical aquatic animal species. We found that the diversity, abundance, and distribution of gut microorganisms of these animals were host-specific, and that lactic acid bacteria (LAB) were predominant among the indigenous probiotic microbes...
August 7, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28782784/lactobacillus-casei-ccfm419-attenuates-type-2-diabetes-via-a-gut-microbiota-dependent-mechanism
#7
Gang Wang, Xiangfei Li, Jianxin Zhao, Hao Zhang, Wei Chen
Probiotics, as dietary supplements, transmit their major effects through the regulation of gut microbiota. According to a previous study, one possible mechanism of Lactobacillus casei CCFM419 protection against diabetes may involve gut flora. To test this hypothesis, high fat and streptozotocin-induced C57BL/6J mice were fed L. casei CCFM419 at 10(8), 10(9), and 10(10) colony forming units (CFU). Compared to untreated mice, 10(9) CFU of L. casei CCFM419 attenuated several symptoms of diabetes, including fasting blood glucose, postprandial blood glucose, glucose intolerance, and insulin resistance...
August 7, 2017: Food & Function
https://www.readbyqxmd.com/read/28771569/disruption-in-the-cecal-microbiota-of-chickens-challenged-with-clostridium-perfringens-and-other-factors-was-alleviated-by-bacillus-licheniformis-supplementation
#8
Yicen Lin, Shuai Xu, Dong Zeng, Xueqin Ni, Mengjia Zhou, Yan Zeng, Hesong Wang, Yi Zhou, Hui Zhu, Kangcheng Pan, Guangyao Li
Clostridium perfringens can induce necrotic enteritis of chickens, which causes large economic losses every year. Bacillus licheniformis, a probiotic, can inhibit the growth of pathogenic bacteria such as Clostridium perfringens, thereby improving the health status of chickens. However, from a microbial ecology perspective, the mechanisms by which alterations to the gut microbiota improve health remain unknown. In this study, we used Illumina MiSeq sequencing to investigate the cecal microbiota of a negative control group (NC), a C...
2017: PloS One
https://www.readbyqxmd.com/read/28767077/gut-liver-axis-derangement-in-non-alcoholic-fatty-liver-disease
#9
REVIEW
Marco Poeta, Luca Pierri, Pietro Vajro
Non-alcoholic fatty liver disease (NAFLD) is the most frequent type of chronic liver disease in the pediatric age group, paralleling an obesity pandemic. A "multiple-hit" hypothesis has been invoked to explain its pathogenesis. The "first hit" is liver lipid accumulation in obese children with insulin resistance. In the absence of significant lifestyle modifications leading to weight loss and increased physical activity, other factors may act as "second hits" implicated in liver damage progression leading to more severe forms of inflammation and hepatic fibrosis...
August 2, 2017: Children
https://www.readbyqxmd.com/read/28765642/anti-diabetic-effects-of-clostridium-butyricum-cgmcc0313-1-through-promoting-the-growth-of-gut-butyrate-producing-bacteria-in-type-2-diabetic-mice
#10
Lingling Jia, Dongyao Li, Ninghan Feng, Muhammad Shamoon, Zhenghua Sun, Lei Ding, Hao Zhang, Wei Chen, Jia Sun, Yong Q Chen
Patients with type 2 diabetes (T2D) have decreased butyrate-producing bacteria. We hypothesized that supplementation with butyrate-producing bacteria may exert beneficial effects on T2D. The current study investigated the effects of well-characterized butyrate-producing bacteria Clostridium butyricum CGMCC0313.1 (CB0313.1) on hyperglycemia and associated metabolic dysfunction in two diabetic mouse models. CB0313.1 was administered daily by oral gavage to leptin (db/db) mice for 5 weeks starting from 3 weeks of age, and to HF diabetic mice induced by high fat diet (HFD) plus streptozotocin (STZ) in C57BL/6J mice for 13 weeks starting from 4 weeks of age...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28761936/clostridium-difficile-colonizes-alternative-nutrient-niches-during-infection-across-distinct-murine-gut-microbiomes
#11
Matthew L Jenior, Jhansi L Leslie, Vincent B Young, Patrick D Schloss
Clostridium difficile is the largest single cause of hospital-acquired infection in the United States. A major risk factor for Clostridium difficile infection (CDI) is prior exposure to antibiotics, as they disrupt the gut bacterial community which protects from C. difficile colonization. Multiple antibiotic classes have been associated with CDI susceptibility, many leading to distinct community structures stemming from variation in bacterial targets of action. These community structures present separate metabolic challenges to C...
July 2017: MSystems
https://www.readbyqxmd.com/read/28744268/intestinal-anti-inflammatory-effects-of-outer-membrane-vesicles-from-escherichia-coli-nissle-1917-in-dss-experimental-colitis-in-mice
#12
María-José Fábrega, Alba Rodríguez-Nogales, José Garrido-Mesa, Francesca Algieri, Josefa Badía, Rosa Giménez, Julio Gálvez, Laura Baldomà
Escherichia coli Nissle 1917 (EcN) is a probiotic strain with proven efficacy in inducing and maintaining remission of ulcerative colitis. However, the microbial factors that mediate these beneficial effects are not fully known. Gram-negative bacteria release outer membrane vesicles (OMVs) as a direct pathway for delivering selected bacterial proteins and active compounds to the host. In fact, vesicles released by gut microbiota are emerging as key players in signaling processes in the intestinal mucosa. In the present study, the dextran sodium sulfate (DSS)-induced colitis mouse model was used to investigate the potential of EcN OMVs to ameliorate mucosal injury and inflammation in the gut...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28743928/effect-of-probiotics-on-the-meat-flavour-and-gut-microbiota-of-chicken
#13
Yan Wang, Jing Sun, Hang Zhong, Nianzhen Li, Hengyong Xu, Qing Zhu, Yiping Liu
To date, no report has demonstrated the use of beneficial microbes for contributing to the flavour characteristics and gut microbiota diversity of chicken. Here, we selected six probiotics obtained from our laboratory and supplemented them in six different combinations to 420 newborn male Qingjiaoma chickens under the same controlled living environment (60 birds, no probiotic supplements). The results showed that chicken supplemented with Bacillus species showed beneficial effects in body weight. Acetate is the major fermentation production in the chicken caecum, and chicken supplemented with Pediococcus pentosaceus had the average higher short chain fatty acids (SCFAs) contents...
July 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28716445/feeding-systems-and-the-gut-microbiome-gut-brain-interactions-with-relevance-to-psychiatric-conditions
#14
REVIEW
Brittany L Mason
BACKGROUND: Physical and mental health is dependent on the environment, and feeding is a prime example of this environmental exchange. While the hypothalamus controls both feeding behavior and the stress response, the integration of the neural control centers and the peripheral gut allows for disruption in the gastrointestinal systems and dysfunctional communication to the brain. OBJECTIVE: The purpose of this review is to familiarize clinicians with the physiology controlling feeding behavior and its implications for psychiatric conditions, such as anorexia nervosa and depression...
June 8, 2017: Psychosomatics
https://www.readbyqxmd.com/read/28694176/anxiogenic-effects-of-a-lactobacillus-inulin-and-the-synbiotic-on-healthy-juvenile-rats
#15
Camila Barrera-Bugueño, Ornella Realini, Jorge Escobar-Luna, Ramón Sotomayor-Zárate, Martin Gotteland, Marcela Julio-Pieper, Javier A Bravo
Gut microbiota interventions, including probiotic and prebiotic use can alter behavior in adult animals and healthy volunteers. However, little is known about their effects in younger individuals. To investigate this, male Sprague-Dawley rats (post-natal day 21, PND21) received Lactobacillus casei 54-2-33 (10(4)cfu/ml), inulin as prebiotic (16mg/ml), or both together (synbiotic) via drinking water for 14days. Control rats received water alone. Open field (OF) and elevated plus maze (EPM) behaviors were evaluated at PND34 and 35, respectively...
July 8, 2017: Neuroscience
https://www.readbyqxmd.com/read/28678744/gut-microbial-profile-analysis-by-miseq-sequencing-of-pancreatic-carcinoma-patients-in-china
#16
Zhigang Ren, Jianwen Jiang, Haiyang Xie, Ang Li, Haifeng Lu, Shaoyan Xu, Lin Zhou, Hua Zhang, Guangying Cui, Xinhua Chen, Yuanxing Liu, Liming Wu, Nan Qin, Ranran Sun, Wei Wang, Lanjuan Li, Weilin Wang, Shusen Zheng
Pancreatic carcinoma (PC) is a lethal cancer. Gut microbiota is associated with some risk factors of PC, e.g. obesity and types II diabetes. However, the specific gut microbial profile in clinical PC in China has never been reported. This prospective study collected 85 PC and 57 matched healthy controls (HC) to analyze microbial characteristics by MiSeq sequencing. The results showed that gut microbial diversity was decreased in PC with an unique microbial profile, which partly attributed to its decrease of alpha diversity...
June 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28658542/the-nutrition-gut-microbiome-physiology-axis-and-allergic-diseases
#17
REVIEW
Craig McKenzie, Jian Tan, Laurence Macia, Charles R Mackay
Dietary and bacterial metabolites influence immune responses. This raises the question whether the increased incidence of allergies, asthma, some autoimmune diseases, cardiovascular disease, and others might relate to intake of unhealthy foods, and the decreased intake of dietary fiber. In recent years, new knowledge on the molecular mechanisms underpinning a 'diet-gut microbiota-physiology axis' has emerged to substantiate this idea. Fiber is fermented to short chain fatty acids (SCFAs), particularly acetate, butyrate, and propionate...
July 2017: Immunological Reviews
https://www.readbyqxmd.com/read/28649371/recent-advances-in-microbial-fermentation-for-dairy-and-health
#18
REVIEW
Daragh Hill, Ivan Sugrue, Elke Arendt, Colin Hill, Catherine Stanton, R Paul Ross
Microbial fermentation has been used historically for the preservation of foods, the health benefits of which have since come to light. Early dairy fermentations depended on the spontaneous activity of the indigenous microbiota of the milk. Modern fermentations rely on defined starter cultures with desirable characteristics to ensure consistency and commercial viability. The selection of defined starters depends on specific phenotypes that benefit the product by guaranteeing shelf life and ensuring safety, texture, and flavour...
2017: F1000Research
https://www.readbyqxmd.com/read/28640632/gut-microbiota-nitric-oxide-and-microglia-as-prerequisites-for-neurodegenerative-disorders
#19
Joyce K Y 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...
July 19, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28636003/in-vitro-modulation-of-gut-microbiota-by-whey-protein-to-preserve-intestinal-health
#20
T Sánchez-Moya, R López-Nicolás, D Planes, C A González-Bermúdez, G Ros-Berruezo, C Frontela-Saseta
The effect of several types of whey milk - cow, sheep, goat and a mixture of them (60 : 20 : 20, respectively) - was assessed in the human gut microbiota. The prebiotic potential of these substrates was evaluated through in vitro gastrointestinal digestion following faecal batch culture fermentations (mimicking colonic fermentation) for 48 hours, using faeces from normal-weight (NW) and obese (OB) donors. Throughout the fermentation process, pH, gas production, short chain and branched fatty acids (SCFA-BCFA) were measured, as well as the changes of microbiota using qPCR...
June 21, 2017: Food & Function
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