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https://www.readbyqxmd.com/read/27931536/advances-in-atopic-dermatitis-in-2015
#1
REVIEW
Takashi Nomura, Kenji Kabashima
This review aims to highlight recently published articles on atopic dermatitis (AD). Updated are the insights into epidemiology, pathology, diagnostics, and therapy. Epidemiologic studies have revealed a positive correlation between AD and systemic conditions, such as rheumatoid arthritis, inflammatory bowel disease, and neonatal adiposity. Pathologic findings highlight the involvement of novel barrier factors (desmoplakin and claudin), novel immune cell subsets (pathogenic effector TH2 cells and group 2 innate lymphoid cells), and differential skewing of helper T cells (eg, TH17 dominance in Asians with AD)...
December 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27927779/depletion-of-gut-microbiota-protects-against-renal-ischemia-reperfusion-injury
#2
Diba Emal, Elena Rampanelli, Ingrid Stroo, Loes M Butter, Gwendoline J Teske, Nike Claessen, Geurt Stokman, Sandrine Florquin, Jaklien C Leemans, Mark C Dessing
An accumulating body of evidence shows that gut microbiota fulfill an important role in health and disease by modulating local and systemic immunity. The importance of the microbiome in the development of kidney disease, however, is largely unknown. To study this concept, we depleted gut microbiota with broad-spectrum antibiotics and performed renal ischemia-reperfusion (I/R) injury in mice. Depletion of the microbiota significantly attenuated renal damage, dysfunction, and remote organ injury and maintained tubular integrity after renal I/R injury...
December 7, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27912797/helminth-infections-and-gut-microbiota-a-feline-perspective
#3
Ana M Duarte, Timothy P Jenkins, Maria S Latrofa, Alessio Giannelli, Elias Papadopoulos, Luís Madeira de Carvalho, Matthew J Nolan, Domenico Otranto, Cinzia Cantacessi
BACKGROUND: Investigations of the relationships between the gut microbiota and gastrointestinal parasitic nematodes are attracting growing interest by the scientific community, driven by the need to better understand the contribution of parasite-associated changes in the composition of the gut flora to both host malnutrition and immune modulation. These studies have however been carried out mainly in humans and experimental animals, while knowledge of the make-up of the gut commensal flora in presence or absence of infection by parasitic nematodes in domestic animals is limited...
December 3, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27909795/altered-gut-microbiota-in-ra-implications-for-treatment
#4
Y Kang, Y Cai, X Zhang, X Kong, J Su
Rheumatoid arthritis (RA) is an autoimmune disease with progressive joint disorder. The complex interplay of genetic and environmental influences is important for the development of the disease. A growing body of evidence has shed light on the association of dysbiosis of gut microbiota with RA. Certain gut microbial strains have been shown to inhibit or attenuate immune responses in RA experimental models, suggesting that specific species among intestinal commensal bacteria may play either a pathogenic or a protective role in the development of RA...
December 1, 2016: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/27906427/the-role-of-diet-on-gut-microbiota-composition
#5
S Bibbò, G Ianiro, V Giorgio, F Scaldaferri, L Masucci, A Gasbarrini, G Cammarota
Gut microbiota is characterized by an inter-individual variability due to genetic and environmental factors. Among the environmental ones, dietary habits play a key role in the modulation of gut microbiota composition. There are main differences between the intestinal microbiota of subjects fed with prevalent Western diet and that of subjects with a diet rich in fibers. Specific changes in the composition of gut microbiota have been demonstrated among subjects according to a different dietary intake. A particular diet may promote the growth of specific bacterial strains, driving hosts to a consequent alteration of fermentative metabolism, with a direct effect on intestinal pH, which can be responsible for the development of a pathogenic flora...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27899923/community-metabolome-correlations-of-gut-microbiota-from-child-turcotte-pugh-of-a-and-b-patients
#6
Xiao Wei, Shan Jiang, Xiangna Zhao, Huan Li, Weishi Lin, Boxing Li, Jing Lu, Yansong Sun, Jing Yuan
The gut flora are widely involved in the cometabolism with the host and have evident effects on the metabolic phenotype of host. This study performed a metabolome analysis of the intestinal microbiota specific for liver cirrhosis. The study population included patients with Child-Turcotte-Pugh score of A (AP, n = 5) and B (BP, n = 5), and control subjects (NM, n = 3). Metagenomic DNA from fecal microbiota was extracted followed by metagenomic sequencing through Illumina MiSeq high throughput sequencing of 16S rRNA regions...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27869680/gut-bacteria-and-hydrogen-sulfide-the-new-old-players-in-circulatory-system-homeostasis
#7
REVIEW
Lenka Tomasova, Piotr Konopelski, Marcin Ufnal
Accumulating evidence suggests that gut bacteria play a role in homeostasis of the circulatory system in mammals. First, gut bacteria may affect the nervous control of the circulatory system via the sensory fibres of the enteric nervous system. Second, gut bacteria-derived metabolites may cross the gut-blood barrier and target blood vessels, the heart and other organs involved in the regulation of the circulatory system. A number of studies have shown that hydrogen sulfide (H₂S) is an important biological mediator in the circulatory system...
November 17, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27861130/gut-flora-connects-obesity-with-pathological-angiogenesis-in-the-eye
#8
Rebecca Scholz, Thomas Langmann
No abstract text is available yet for this article.
December 1, 2016: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/27856664/the-gut-brain-connection-triggering-of-brain-autoimmune-disease-by-commensal-gut-bacteria
#9
REVIEW
Hartmut Wekerle
In a transgenic model of spontaneous experimental autoimmune encephalomyelitis, autoimmune attack against the CNS requires the presence of an intact commensal gut flora. Extending this observation to human autoimmune disease, such as multiple sclerosis, we postulate that the pathogenic reaction requires the coincidence of at least three factors: a permissive genetic disposition, a pro-inflammatory intestinal microbial profile, and the accumulation of autoreactive T cells in the gut-associated lymphatic tissue...
December 2016: Rheumatology
https://www.readbyqxmd.com/read/27849120/review-gut-microbiota-and-functional-diseases-of-the-gastrointestinal-tract
#10
Nicola Imperatore, Raffaella Tortora, Filomena Morisco, Nicola Caporaso
INTRODUCTION: Functional gastrointestinal disorders (FGIDs) are a common group of chronic gastrointestinal (GI) diseases defined by symptom-based diagnostic criteria, which consider chronic or recurrent symptoms of the GI tract in the absence of other organic or biochemical reasons. Recent evidences have been highlighted the role of gut microbiota in the pathophysiology of the FGIDs. EVIDENCE ACQUISITION: We focused our attention on critically analysis of the existing literature on the role of gut microbiota in FGIDs, by evaluating the differences of composition, functions and role of intestinal flora in FGIDs of the upper and lower gastrointestinal tract...
November 16, 2016: Minerva Gastroenterologica e Dietologica
https://www.readbyqxmd.com/read/27845787/the-effect-of-green-tea-polyphenols-on-gut-microbial-diversity-and-fat-deposition-in-c57bl-6j-hfa-mice
#11
Li Wang, Benhua Zeng, Xiaojing Zhang, Zhenlin Liao, Lihui Gu, Zhiwei Liu, Qingping Zhong, Hong Wei, Xiang Fang
Quantitative and qualitative changes in gut microbial composition have been linked to obesity and obesity-related complications, and eating pattern has been shown to significantly impact the gut microbiome. Meanwhile, tea polyphenols are known to have health benefits such as improving glucose tolerance and decreasing liver fat deposition that may be helpful in combating obesity and obesity-related disorders. We therefore studied the effect of green tea polyphenols on gut microbial diversity and fat deposition in C57BL/6J Human Flora-Associated (HFA) mice, which were divided into five groups: low fat (LF), high fat (HF), high fat + 0...
November 15, 2016: Food & Function
https://www.readbyqxmd.com/read/27836763/weight-gain-by-gut-microbiota-manipulation-in-productive-animals
#12
REVIEW
Emmanouil Angelakis
Antibiotics, prebiotics and probiotics are widely used as growth promoters in agriculture. In the 1940s, use of Streptomyces aureofaciens probiotics resulted in weight gain in animals, which led to the discovery of chlortetracycline. Tetracyclines, macrolides, avoparcin and penicillins have been commonly used in livestock agriculture to promote growth through increased food intake, weight gain, and improved herd health. Prebiotic supplements including oligosaccharides, fructooligosaccharides, and galactosyl-lactose improve the growth performance of animals...
November 9, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27834801/trimethylamine-n-oxide-the-good-the-bad-and-the-unknown
#13
REVIEW
Manuel T Velasquez, Ali Ramezani, Alotaibi Manal, Dominic S Raj
Trimethylamine N-oxide (TMAO) is a small colorless amine oxide generated from choline, betaine, and carnitine by gut microbial metabolism. It accumulates in the tissue of marine animals in high concentrations and protects against the protein-destabilizing effects of urea. Plasma level of TMAO is determined by a number of factors including diet, gut microbial flora and liver flavin monooxygenase activity. In humans, a positive correlation between elevated plasma levels of TMAO and an increased risk for major adverse cardiovascular events and death is reported...
November 8, 2016: Toxins
https://www.readbyqxmd.com/read/27825516/adaptation-of-escherichia-coli-traversing-from-the-faecal-environment-to-the-urinary-tract
#14
Karen L Nielsen, Marc Stegger, Paul A Godfrey, Michael Feldgarden, Paal S Andersen, Niels Frimodt-Møller
The majority of extraintestinal pathogenic Escherichia coli (ExPEC) causing urinary tract infections (UTI) are found in the patient's own gut flora, but only limited knowledge is available on the potential adaptation that may occur in the bacteria in order to traverse the perineum and successfully infect the urinary tract. Here, matching pairs of faecal and UTI isolates from 42 patients were compared pairwise using in-depth whole-genome sequencing to investigate whether genetic changes were evident for successful colonization in these two different environments...
December 2016: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/27824805/the-emerging-role-of-the-gut-microbiome-in-adult-patients-with-multiple-sclerosis
#15
Pamela K Newland, Margaret Heitkemper, Yanjiao Zhou
BACKGROUND: Approximately 2.3 million people worldwide are currently living with multiple sclerosis (MS). The pathophysiologic mechanism of MS is not well known. It has been suggested that alterations in the normal gut flora may contribute to MS etiology and symptoms. OBJECTIVE: The aims of this review are to describe the data suggesting a role for the gut microbiome in MS research and address its implications for practice. METHODS: A literature search of the following databases (PubMed, CINAHL, Cochrane library database, MEDLINE, Scopus, and Psychology and Behavioral Sciences) was conducted to find published studies relevant to gut microbiome in patients with MS...
December 2016: Journal of Neuroscience Nursing: Journal of the American Association of Neuroscience Nurses
https://www.readbyqxmd.com/read/27824342/systems-level-metabolism-of-the-altered-schaedler-flora-a-complete-gut-microbiota
#16
Matthew B Biggs, Gregory L Medlock, Thomas J Moutinho, Hannah J Lees, Jonathan R Swann, Glynis L Kolling, Jason A Papin
The altered Schaedler flora (ASF) is a model microbial community with both in vivo and in vitro relevance. Here we provide the first characterization of the ASF community in vitro, independent of a murine host. We compared the functional genetic content of the ASF to wild murine metagenomes and found that the ASF functionally represents wild microbiomes better than random consortia of similar taxonomic composition. We developed a chemically defined medium that supported growth of seven of the eight ASF members...
November 8, 2016: ISME Journal
https://www.readbyqxmd.com/read/27810239/responses-of-earthworms-and-microbial-communities-in-their-guts-to-triclosan
#17
Lili Ma, Yuwei Xie, Zhihua Han, John P Giesy, Xiaowei Zhang
Responses of the earthworm (Eisenia fetida) and compositions of associated microbial communities were determined after exposure to various concentrations of Triclosan (TCS) for 7 d. Concentrations of TCS were greater in intestines than in epidermis of earthworms, which suggested that earthworms accumulate TCS mainly by ingestion rather than by epidermic penetration. Exposure to TCS caused a concentration-dependent increase in activities of antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) and in malondialdehyde (MDA) in E...
October 31, 2016: Chemosphere
https://www.readbyqxmd.com/read/27809778/pectin-enhances-the-effect-of-fecal-microbiota-transplantation-in-ulcerative-colitis-by-delaying-the-loss-of-diversity-of-gut-flora
#18
Yao Wei, Jianfeng Gong, Weiming Zhu, Hongliang Tian, Chao Ding, Lili Gu, Ning Li, Jieshou Li
BACKGROUND: Fecal microbiota transplantation (FMT) induces remission in ulcerative colitis (UC). However, the treatment effect of FMT diminishes over time. Maintaining the diversity of the gut flora for long periods may improve the effects of FMT in UC. Pectin, which can be fermented by gut microbiota into short-chain fatty acids, is postulated to shape the composition and maintain the balance of gut microbiota following transplantation. This study investigated whether pectin could enhance the effects of FMT in UC patients...
November 3, 2016: BMC Microbiology
https://www.readbyqxmd.com/read/27807544/qualitative-parameters-of-the-colonic-flora-in-patients-with-hnf1a-mody-are-different-from-those-observed-in-type-2-diabetes-mellitus
#19
Sandra Mrozinska, Piotr Radkowski, Tomasz Gosiewski, Magdalena Szopa, Malgorzata Bulanda, Agnieszka H Ludwig-Galezowska, Iwona Morawska, Agnieszka Sroka-Oleksiak, Bartlomiej Matejko, Przemyslaw Kapusta, Dominika Salamon, Maciej T Malecki, Pawel Wolkow, Tomasz Klupa
Background. Type 2 diabetes mellitus (T2DM) is determined by genetic and environmental factors. There have been many studies on the relationship between the composition of the gastrointestinal bacterial flora, T2DM, and obesity. There are no data, however, on the gut microbiome structure in monogenic forms of the disease including Maturity Onset Diabetes of the Young (MODY). Methods. The aim of the investigation was to compare the qualitative parameters of the colonic flora in patients with HNF1A-MODY and T2DM and healthy individuals...
2016: Journal of Diabetes Research
https://www.readbyqxmd.com/read/27777602/dietary-green-plant-thylakoids-decrease-gastric-emptying-and-gut-transit-promote-changes-in-the-gut-microbial-flora-but-does-not-cause-steatorrhea
#20
Eva-Lena Stenblom, Björn Weström, Caroline Linninge, Peter Bonn, Mary Farrell, Jens F Rehfeld, Caroline Montelius
Green-plant thylakoids increase satiety by affecting appetite hormones such as ghrelin, cholecystokinin (CCK) and glucagon-like peptide-1 (GLP-1). The objective of this study was to investigate if thylakoids also affect gastrointestinal (GI) passage and microbial composition. To analyse the effects on GI passage, 16 rats were gavage-fed a control or thylakoid-supplemented high-fat diet (HFD) 30 min before receiving Evans blue. Another 16 rats were fed a control HFD or thylakoid HFD for two weeks prior to the intragastric challenge with Evans blue...
2016: Nutrition & Metabolism
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