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Short-chain fatty acids

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https://www.readbyqxmd.com/read/29790926/bathyarchaeota-globally-distributed-metabolic-generalists-in-anoxic-environments
#1
Zhichao Zhou, Jie Pan, Fengping Wang, Ji-Dong Gu, Meng Li
Bathyarchaeota, formerly known as the Miscellaneous Crenarchaeotal Group, is a phylum of global generalists that are widespread in anoxic sediments, which host relatively high abundant archaeal communities. Until now, 25 subgroups have been identified in the Bathyarchaeota. The distinct bathyarchaeotal subgroups diverged to adapt to the marine and freshwater environments. Based on the physiological and genomic evidence, acetyl-CoA centralized heterotrophic pathways of energy conservation have been proposed to function in Bathyarchaeota; these microbes are able to anaerobically utilize (i) detrital proteins, (ii) polymeric carbohydrates, (iii) fatty acids/aromatic compounds, (iv) methane (or short chain alkane) and methylated compounds, (v) and/or potentially other organic matter...
May 21, 2018: FEMS Microbiology Reviews
https://www.readbyqxmd.com/read/29789624/interplay-between-gut-microbiota-metabolism-and-inflammation-in-hiv-infection
#2
EDITORIAL
Jorge F Vázquez-Castellanos, Sergio Serrano-Villar, Nuria Jiménez-Hernández, María Dolores Soto Del Rio, Sara Gayo, David Rojo, Manuel Ferrer, Coral Barbas, Santiago Moreno, Vicente Estrada, Tomas Rattei, Amparo Latorre, Andrés Moya, María José Gosalbes
HIV infection causes a disruption of gut-associated lymphoid tissue, driving a shift in the composition of gut microbiota. A deeper understanding of the metabolic changes and how they affect the interplay with the host is needed. Here, we assessed functional modifications of HIV-associated microbiota by combining metagenomic and metatranscriptomic analyses. The transcriptionally active microbiota was well-adapted to the inflamed environment, overexpressing pathways related to resistance to oxidative stress...
May 23, 2018: ISME Journal
https://www.readbyqxmd.com/read/29788095/effects-of-maturity-at-harvest-on-the-nutritive-value-and-ruminal-digestion-of-eragrostis-tef-cv-moxie-when-fed-to-beef-cattle
#3
J R Vinyard, J B Hall, J E Sprinkle, G E Chibisa
Teff (Eragrostis tef cv. Moxie), a warm-season annual grass, could be an excellent forage for beef cattle. However, there is limited information on its nutritive value to cattle when harvested at different stages of maturity. Thus, the objective of this research was to determine the effect of feeding teff hay harvested at the boot (BT), early-heading (EH), or late-heading (LH) stages of maturity on nutrient intake, ruminal fermentation characteristics, omasal nutrient flow, and N utilization in beef cattle...
May 18, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29787870/oral-hydroxysafflor-yellow-a-reduces-obesity-in-mice-by-modulating-the-gut-microbiota-and-serum-metabolism
#4
Juan Liu, Shijun Yue, Zhirui Yan, Wuwen Feng, Xintong Meng, Aiting Wang, Cheng Peng, Changyun Wang, Dan Yan
Given the high and increasing prevalence of obesity, the safe and effective treatment of obesity would be beneficial. Here, we examined whether oral hydroxysafflor yellow A (HSYA), an active compound from the dried florets of Carthamus tinctorius L., can reduce high-fat (HF) diet-induced obesity in C57BL/6 J mice. Our results showed that the average body weight of HF group treated by HSYA was significantly lower than that of the HF group (P < 0.01). HSYA also reduced fat accumulation, ameliorated insulin resistance, restored glucose homeostasis, reduced inflammation, enhanced intestinal integrity, and increased short-chain fatty acids ((SCFAs)) production in HF diet-fed mice...
May 19, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29785916/focusing-on-fatty-acid-profile-in-milk-from-different-species-after-in-vitro-digestion
#5
Antonella Santillo, Lucia Figliola, Maria G Ciliberti, Mariangela Caroprese, Rosaria Marino, Marzia Albenzio
We report the fatty acid profile of raw milk and of the corresponding digested milk from different sources (human milk, formula milk and donkey, bovine, ovine and caprine milk) to gain information on the nutritional quality of different milk sources in infant nutrition.Short chain fatty acids (SC-FA) were higher in bovine and caprine milk, intermediate in ovine and donkey and lower in human and formula milk. Medium chain fatty acids (MC-FA) showed the highest values for bovine and caprine milk and the lowest for donkey and formula milk, whereas long chain fatty acids (LC-FA) were the highest in donkey and formula milk and intermediate in human milk...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29782790/magnetite-triggering-enhanced-diet-a-scavenger-for-the-blockage-of-electron-transfer-in-anaerobic-digestion-of-high-solids-sewage-sludge
#6
Tao Wang, Dong Zhang, Lingling Dai, Bin Dong, Xiaohu Dai
At present, high-solids anaerobic digestion of sewage sludge has drawn great attention due to the superiority of its small land area footprint and low energy consumption. However, a high organic loading rate may cause acids accumulation and ammonia inhibition, thus leading to an inhibited pseudo-steady state in which electron transfer through interspecies hydrogen transfer (IHT) between acetogens and methanogens is blocked. In this study, adding 50 mg/g TS (total solid) magnetite clearly reduced the accumulation of short-chain fatty acids and accelerated methane production by 26...
May 21, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29782507/paraclostridium-bifermentans-exacerbates-pathosis-in-a-mouse-model-of-ulcerative-colitis
#7
Ryo Kutsuna, Junko Tomida, Yuji Morita, Yoshiaki Kawamura
Although it has been recognized that intestinal bacteria play an important role in the pathology of human ulcerative colitis (UC), specific pathogenic bacteria for UC have not been identified. We investigated the influence of Paraclostridium bifermentans PAGU1678 strain on the pathology of a UC mouse model and found it increased UC pathosis scores such as loose and bloody stools, reduced diversity of fecal flora, disappearance of the crypt structure of distal colon tissue, destruction of intestinal epithelial cells, and atrophy of the colon...
2018: PloS One
https://www.readbyqxmd.com/read/29774758/evaluation-of-natural-bv-as-a-novel-feed-additive-in-fast-growing-broilers
#8
Da Hye Kim, Sang Mi Han, Moung Cheul Keum, Sang Lee, Byoung Ki An, Sang-Rak Lee, Kyung-Woo Lee
1. The present study was designed to evaluate purified bee venom (BV) as an alternative to antibiotics in broiler chickens. The experimental treatment diets were formulated by adding BV into a maize-soybean meal-based diet to give 0, 10, 50, 100, and 500 μg BV per kg of diet. 2. Dietary BV quadratically improved (P<0.05) feed conversion ratio and increased body weight gain at 1-21 days as level in diet increased. Higher BV levels lowered relative weight of spleen (linear and quadratic, P<0.05), bursa of Fabricius (quadratic, P<0...
May 18, 2018: British Poultry Science
https://www.readbyqxmd.com/read/29770190/effects-of-molecular-hydrogen-dissolved-alkaline-electrolyzed-water-on-intestinal-environment-in-mice
#9
Yasuki Higashimura, Yasunori Baba, Ryo Inoue, Tomohisa Takagi, Kazuhiko Uchiyama, Katsura Mizushima, Yasuko Hirai, Chihiro Ushiroda, Yoshinori Tanaka, Yuji Naito
Increasing evidence indicates that molecular hydrogen-dissolved alkaline electrolyzed water (AEW) has various physiological activities such as antioxidative activity. Gut microbiota are deeply associated with our health through a symbiotic relationship. Recent reports have described that most gastrointestinal microbial species encode the genetic capacity to metabolize molecular hydrogen, meaning that molecular hydrogen might affect the gut microbial composition. Nevertheless, AEW effects on gut microbiota remain unknown...
January 2018: Medical Gas Research
https://www.readbyqxmd.com/read/29768180/dietary-fiber-confers-protection-against-flu-by-shaping-ly6c-patrolling-monocyte-hematopoiesis-and-cd8-t-cell-metabolism
#10
Aurélien Trompette, Eva S Gollwitzer, Céline Pattaroni, Isabel C Lopez-Mejia, Erika Riva, Julie Pernot, Niki Ubags, Lluis Fajas, Laurent P Nicod, Benjamin J Marsland
Dietary fiber protects against chronic inflammatory diseases by dampening immune responses through short-chain fatty acids (SCFAs). Here we examined the effect of dietary fiber in viral infection, where the anti-inflammatory properties of SCFAs in principle could prevent protective immunity. Instead, we found that fermentable dietary fiber increased survival of influenza-infected mice through two complementary mechanisms. High-fiber diet (HFD)-fed mice exhibited altered bone marrow hematopoiesis, characterized by enhanced generation of Ly6c- patrolling monocytes, which led to increased numbers of alternatively activated macrophages with a limited capacity to produce the chemokine CXCL1 in the airways...
May 15, 2018: Immunity
https://www.readbyqxmd.com/read/29768170/a-little-fiber-goes-a-long-way
#11
Patricia A C Castillo, Timothy W Hand
In this issue of Immunity, Trompette et al. (2018) show that dietary fiber and short chain fatty acids reduce influenza A virus-associated immunopathology by enhancing CD8+ T cell effector function and by promoting the differentiation of alternatively activated macrophages.
May 15, 2018: Immunity
https://www.readbyqxmd.com/read/29767564/interorgan-metabolic-crosstalk-in-human-insulin-resistance
#12
Sofiya Gancheva, Tomas Jelenik, Elisa Álvarez-Hernández, Michael Roden
Excessive energy intake and reduced energy expenditure drive the development of insulin resistance and metabolic diseases such as obesity and type 2 diabetes mellitus. Metabolic signals derived from dietary intake or secreted from adipose tissue, gut, and liver contribute to energy homeostasis. Recent metabolomic studies identified novel metabolites and enlarged our knowledge on classic metabolites. This review summarizes the evidence of their roles as mediators of interorgan crosstalk and regulators of insulin sensitivity and energy metabolism...
July 1, 2018: Physiological Reviews
https://www.readbyqxmd.com/read/29767160/effects-of-yeast-cell-wall-on-growth-performance-immune-responses-and-intestinal-short-chain-fatty-acid-concentrations-of-broilers-in-an-experimental-necrotic-enteritis-model
#13
Guang-Da Xue, Shu-Biao Wu, Mingan Choct, Robert A Swick
Subclinical necrotic enteritis (NE) causes devastating economic losses in the broiler chicken industry, especially in birds raised free of in-feed antibiotics. Prebiotics are potential alternatives to in-feed antibiotics. Yeast cell wall extract (YCW) derived from Saccharomyces cerevisiae is a prebiotic with known immune modulating effects. This study examined the effects of YCW and antibiotics (AB) during subclinical NE on broiler growth performance, intestinal lesions, humoral immune response and gut microflora metabolites...
December 2017: Animal nutrition
https://www.readbyqxmd.com/read/29767145/an-increase-in-corn-resistant-starch-decreases-protein-fermentation-and-modulates-gut-microbiota-during-in-vitro-cultivation-of-pig-large-intestinal-inocula
#14
Xiangyu He, Weiwei Sun, Ting Ge, Chunlong Mu, Weiyun Zhu
High-protein diet could cause an increase in protein fermentation in the large intestine, leading to an increased production of potentially detrimental metabolites. We hypothesized that an increase in corn resistant starch content may attenuate the protein fermentation. The aim of this study was to evaluate the effect of resistant starch on protein fermentation by inocula from large intestine of pigs using in vitro cultivation. Fermentation patterns were analyzed during a 24-h incubation of cecal and colonic digesta with varying corn resistant starch contents, using casein protein as sole nitrogen source...
September 2017: Animal nutrition
https://www.readbyqxmd.com/read/29766722/effects-of-whole-grain-rice-and-wheat-on-composition-of-gut-microbiota-and-short-chain-fatty-acids-in-rats
#15
Fei Han, Yong Wang, Yangyang Han, Jianxin Zhao, Fenli Han, Ge Song, Ping Jiang, Haijiang Miao
Diets rich in whole grain (WG) cereals bring lower disease risks compared with refined grain-based diets. We investigated the effects of polished rice (PR), refined wheat (RW), unpolished rice (UPR), and whole wheat (WW) on short-chain fatty acids (SCFAs) and gut microbiota in ileal, cecal, and colonic digesta of normal rats. Animals fed with UPR and WW diets exhibited higher total SCFA in cecal and colonic digesta compared with those fed with PR and RW diets. Wheat diets contributed higher total SCFA than rice diets...
May 16, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29762726/supplementation-with-organic-acids-showing-different-effects-on-growth-performance-gut-morphology-and-microbiota-of-weaned-pigs-fed-with-highly-or-less-digestible-diets
#16
S Li, J Zheng, K Deng, L Chen, X L Zhao, X M Jiang, Z F Fang, L Q Che, S Y Xu, B Feng, J Li, Y Lin, Y Y Wu, Y M Han, De Wu
Two studies were conducted to evaluate the effects of organic acid (OA) supplementation in a highly digestible (Exp. 1) or a less digestible diet (Exp. 2) on the growth performance and intestinal health of weaned pigs. In Exp. 1, a total of 240 pigs weaned at day 21 were assigned to one of five dietary treatments: negative control (NC) (basal diet, 3,000 ppm ZnO in the first 2 weeks only); positive control (PC) (NC plus 10 mg/kg zinc bacitracin, 5 mg/kg colistin sulfate, and 5 mg/kg olaquindox); OA1 (NC plus a 0...
May 11, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29762376/microbial-fermentation-of-starch-its-impact-on-the-range-of-acceptable-carbohydrate-intake
#17
Satish C Kalhan
Starch, a major source of carbohydrates in human nutrition, is extensively hydrolyzed in the gastrointestinal tract of children and adults. A small fraction of the ingested starch reaches the cecum and colon where it is fermented by the gut microbiome into short-chain fatty acids (SCFA) and other products. Recent data in humans and in animal models have demonstrated the extensive effects of short-chain fatty acids on whole body energy metabolism, appetite, insulin resistance, fatty acid oxidation, fat accretion, obesity, and diabetes...
June 2018: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/29761557/effects-of-dietary-yeast-cell-wall-on-faecal-bacteria-and-fermentation-products-in-adult-cats
#18
J P F Santos, A A Aquino, M B A Glória, M J Avila-Campos, P M Oba, K de M Santos, T H A Vendramini, A C Carciofi, A R Junior, M A Brunetto
This study evaluated the effects of increasing concentrations of spray-dried yeast cell wall (YCW) in diets for healthy adult cats on apparent nutrient digestibility and on bacterial composition and fermentation products in the stool. Fourteen cats with an average weight of 4.40 ± 1.05 kg and an average age of 6.2 ± 0.54 years were used and assigned to treatments in an unbalanced randomized block design (by experimental period) with two blocks and three or four cats per diet in each block. Treatments included: control (0% YCW), 0...
May 14, 2018: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29758151/clinical-effects-of-stabilized-stannous-fluoride-dentifrice-in-reducing-plaque-microbial-virulence-ii-metabonomic-changes
#19
Michael Cannon, Deepa Khambe, Malgorzata Klukowska, David L Ramsey, Melanie Miner, Tom Huggins, Donald J White
OBJECTIVES: The clinical effects of stannous fluoride (SnF2) dentifrice in reducing symptoms of gingivitis and reducing the virulence of subgingival plaque through suppression of activation of gene expression in toll receptor based reporter cells were previously reported. This study expanded analysis of the clinical study to include evaluation of dentifrice effects on salivary metabolites using 1H Nuclear Magnetic Resonance (1H NMR) systems biology-based metabonomics. METHODS: The clinical design was reported previously (J Clin Dent2017;28:16-26)...
March 2018: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/29758009/a-review-on-the-weight-loss-effects-of-oxidized-tea-polyphenols
#20
REVIEW
Dylan O'Neill Rothenberg, Caibi Zhou, Lingyun Zhang
The mechanistic systems in the body through which tea causes weight loss are complex and multi-dimensional. Additionally, the bioactive components in tea such as catechins, caffeine, and products of tea polyphenol oxidation vary greatly from one major tea type to the next. Green tea has been the primary subject of consideration for investigation into the preventative health effects of tea because it contains the highest levels of phenolic compounds and retains the highest antioxidant capabilities of any major tea type...
May 14, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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