keyword
MENU ▼
Read by QxMD icon Read
search

Bile acid metabolism

keyword
https://www.readbyqxmd.com/read/28643618/heat-stabilised-rice-bran-consumption-by-colorectal-cancer-survivors-modulates-stool-metabolite-profiles-and-metabolic-networks-a-randomised-controlled-trial
#1
Dustin G Brown, Erica C Borresen, Regina J Brown, Elizabeth P Ryan
Rice bran (RB) consumption has been shown to reduce colorectal cancer (CRC) growth in mice and modify the human stool microbiome. Changes in host and microbial metabolism induced by RB consumption was hypothesised to modulate the stool metabolite profile in favour of promoting gut health and inhibiting CRC growth. The objective was to integrate gut microbial metabolite profiles and identify metabolic pathway networks for CRC chemoprevention using non-targeted metabolomics. In all, nineteen CRC survivors participated in a parallel randomised controlled dietary intervention trial that included daily consumption of study-provided foods with heat-stabilised RB (30 g/d) or no additional ingredient (control)...
May 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28637315/attenuated-effects-of-bile-acids-on-glucose-metabolism-and-insulin-sensitivity-in-a-male-mouse-model-of-prenatal-undernutrition
#2
Huijuan Ma, Vicencia M Sales, Ashley R Wolf, Sathish Subramanian, Tucker J Matthews, Michael Chen, Aparna Sharma, Walt Gall, Wim Kulik, David E Cohen, Yusuke Adachi, Nicholas W Griffin, Jeffrey I Gordon, Mary-Elizabeth Patti, Elvira Isganaitis
Prenatal undernutrition and low birth weight are associated with risk of type 2 diabetes and obesity. Prenatal caloric restriction results in low birth weight, glucose intolerance, obesity, and reduced plasma bile acids (BA) in offspring mice. Since BAs can regulate systemic metabolism and glucose homeostasis, we hypothesized that BA supplementation could prevent diet-induced obesity and glucose intolerance in this model of developmental programming. Pregnant dams were food restricted by 50% from gestational days 12...
June 15, 2017: Endocrinology
https://www.readbyqxmd.com/read/28634850/novel-vitamin-b12-producing-enterococcus-spp-and-preliminary-in-vitro-evaluation-of-probiotic-potentials
#3
Ping Li, Qing Gu, Yuejiao Wang, Yue Yu, Lanlan Yang, Jieyan V Chen
Vitamin B12 is an essential nutrient required for crucial metabolic processes in humans. Vitamin B12-producing lactic acid bacteria (LAB) have been attracting increased attentions currently because of the generally recognized as safe (GRAS) status. Most of recent studies focused on Lactobacillus, and little is known about B12-producing Enterococcus. In the present study, five Enterococcus strains isolated from infant feces were identified as vitamin B12 producers. Among them, Enterococcus faecium LZ86 had the highest B12 production (499...
June 20, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28634191/cd36-knockout-mice-are-protected-against-lithogenic-diet-induced-gallstones
#4
Yan Xie, Vincenza Cifarelli, Terri Pietka, Elizabeth P Newberry, Susan M Kennedy, Amin Khalifeh-Soltani, Robin Clugston, Kamran Atabai, Nada A Abumrad, Nicholas O Davidson
The scavenger receptor and multiligand transporter CD36 functions to promote cellular free fatty acid uptake and regulates aspects of both hepatic and intestinal cholesterol metabolism. However, the role of CD36 in regulating canalicular and biliary cholesterol transport and secretion is unknown. Here we show that germline Cd36 knockout mice are protected against lithogenic diet (LD) induced gallstones compared to congenic (C57BL6/J) controls. Cd36 knockout mice crossed into congenic L-Fabp knockout mice (DKO mice) demonstrated protection against LD induced gallstones, reversing the susceptibility phenotype observed in L-Fabp knockout mice...
June 20, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28617863/the-use-of-metabolic-profiling-to-identify-insulin-resistance-in-veal-calves
#5
Andre J Pantophlet, Han Roelofsen, Marcel P de Vries, Walter J J Gerrits, Joost J G C van den Borne, Roel J Vonk
Heavy veal calves (4-6 months old) are at risk of developing insulin resistance and disturbed glucose homeostasis. Prolonged insulin resistance could lead to metabolic disorders and impaired growth performance. Recently, we discovered that heavy Holstein-Friesian calves raised on a high-lactose or high-fat diet did not differ in insulin sensitivity, that insulin sensitivity was low and 50% of the calves could be considered insulin resistant. Understanding the patho-physiological mechanisms underlying insulin resistance and discovering biomarkers for early diagnosis would be useful for developing prevention strategies...
2017: PloS One
https://www.readbyqxmd.com/read/28615690/cathepsin-d-regulates-lipid-metabolism-in-murine-steatohepatitis
#6
Tom Houben, Yvonne Oligschlaeger, Tim Hendrikx, Albert V Bitorina, Sofie M A Walenbergh, Patrick J van Gorp, Marion J J Gijbels, Silvia Friedrichs, Jogchum Plat, Frank G Schaap, Dieter Lütjohann, Marten H Hofker, Ronit Shiri-Sverdlov
Due to the obesity epidemic, non-alcoholic steatohepatitis (NASH) is a prevalent liver disease, characterized by fat accumulation and inflammation of the liver. However, due to a lack of mechanistic insight, diagnostic and therapeutic options for NASH are poor. Recent evidence has indicated cathepsin D (CTSD), a lysosomal enzyme, as a marker for NASH. Here, we investigated the function of CTSD in NASH by using an in vivo and in vitro model. In addition to diminished hepatic inflammation, inhibition of CTSD activity dramatically improved lipid metabolism, as demonstrated by decreased plasma and liver levels of both cholesterol and triglycerides...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28611517/urinary-metabolic-insights-into-host-gut-microbial-interactions-in-healthy-and-ibd-children
#7
Francois-Pierre Martin, Ming-Ming Su, Guo-Xiang Xie, Seu Ping Guiraud, Martin Kussmann, Jean-Philippe Godin, Wei Jia, Andreas Nydegger
AIM: To identify metabolic signatures in urine samples from healthy and inflammatory bowel disease (IBD) children. METHODS: We applied liquid chromatography and gas chromatography coupled to targeted mass spectrometry (MS)-based metabolite profiling to identify and quantify bile acids and host-gut microbial metabolites in urine samples collected from 21 pediatric IBD patients monitored three times over one year (baseline, 6 and 12 mo), and 27 age- and gender-matched healthy children...
May 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28606513/serum-metabolomics-analysis-reveals-that-obvious-cardioprotective-effects-of-low-dose-sini-decoction-against-isoproterenol-induced-myocardial-injury-in-rats
#8
Jun Zhou, Xiaoqiong Ma, Min Shi, Cuiwei Chen, Yue Sun, Jingjing Li, Youxiang Xiong, Junjie Chen, Fanzhu Li
BACKGROUND: Sini decoction (SND) is used for cardiovascular disease over thousands of years in China. However, it is still lacking of dose-response relationship of SND in cardiovascular disease at the metabolic level. PURPOSE: The present study is designed to explore the cardioprotective effects of different dosages of SND pretreatment on the isoproterenol (ISO)-induced myocardial injury and elucidate the mechanism underlying this protective effect. METHODS: The cardioprotective effects of different dosages of SND pretreatment on the isoproterenol-induced myocardial injury were compared through a serum metabolomics approach based on ultraperformance liquid chromatography coupled to quadrupole-time-of-flight mass spectrometry (UPLC-Q-TOF-MS)...
July 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28604703/cold-induced-conversion-of-cholesterol-to-bile-acids-in-mice-shapes-the-gut-microbiome-and-promotes-adaptive-thermogenesis
#9
Anna Worthmann, Clara John, Malte C Rühlemann, Miriam Baguhl, Femke-Anouska Heinsen, Nicola Schaltenberg, Markus Heine, Christian Schlein, Ioannis Evangelakos, Chieko Mineo, Markus Fischer, Maura Dandri, Claus Kremoser, Ludger Scheja, Andre Franke, Philip W Shaul, Joerg Heeren
Adaptive thermogenesis is an energy-demanding process that is mediated by cold-activated beige and brown adipocytes, and it entails increased uptake of carbohydrates, as well as lipoprotein-derived triglycerides and cholesterol, into these thermogenic cells. Here we report that cold exposure in mice triggers a metabolic program that orchestrates lipoprotein processing in brown adipose tissue (BAT) and hepatic conversion of cholesterol to bile acids via the alternative synthesis pathway. This process is dependent on hepatic induction of cytochrome P450, family 7, subfamily b, polypeptide 1 (CYP7B1) and results in increased plasma levels, as well as fecal excretion, of bile acids that is accompanied by distinct changes in gut microbiota and increased heat production...
June 12, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28602806/the-overall-fatty-acid-absorption-controlled-by-basolateral-chylomicron-excretion-under-regulation-of-p-jnk1
#10
Wolfgang Stremmel, Simone Staffer, Andreas Wannhoff, Anita Pathil
Suppression of fatty acid absorption is one goal to fight obesity. However, the responsible molecular mechanism is poorly understood. Aim of the present study was the search for the key regulator of the overall fatty acid absorption mechanism and its pharmaceutical modulation. As experimental tool we employed the polarized human intestinal tumor derived cell line CaCo2. Here we showed that influx of fatty acids is mediated by an apical heterotetrameric plasma membrane protein complex of which the calcium-independent membrane phospholipase A2 (iPLA2ß) is one constituent...
June 6, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28602676/interactions-between-gut-bacteria-and-bile-in-health-and-disease
#11
REVIEW
Sarah L Long, Cormac G M Gahan, Susan A Joyce
Bile acids are synthesized from cholesterol in the liver and released into the intestine to aid the digestion of dietary lipids. The host enzymes that contribute to bile acid synthesis in the liver and the regulatory pathways that influence the composition of the total bile acid pool in the host have been well established. In addition, the gut microbiota provides unique contributions to the diversity of bile acids in the bile acid pool. Gut microbial enzymes contribute significantly to bile acid metabolism through deconjugation and dehydroxylation reactions to generate unconjugated bile acids and secondary bile acids...
June 9, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28599622/alteration-of-gut-microbiota-in-association-with-cholesterol-gallstone-formation-in-mice
#12
Qihan Wang, Long Jiao, Chuanqi He, Haidong Sun, Qu Cai, Tianquan Han, Hai Hu
BACKGROUND: The gut microbiome exerts extensive roles in metabolism of nutrients, pharmaceuticals, organic chemicals. Little has been known for the role of gut microbiota in regulating cholesterol and bile acids in association with gallstone formation. This study investigated the changes in the composition of gut microbiota in mice fed with lithogenic diet (LD). METHODS: Adult male C57BL/6 J mice were fed with either lithogenic diet (1.25% cholesterol and 0.5% cholic acid) or chow diet as control for 56 days...
June 9, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28594916/identification-of-key-amino-acid-residues-in-the-htgr5-nomilin-interaction-and-construction-of-its-binding-model
#13
Takashi Sasaki, Moeko Mita, Naho Ikari, Ayane Kuboyama, Shuzo Hashimoto, Tatsuya Kaneko, Masaji Ishiguro, Makoto Shimizu, Jun Inoue, Ryuichiro Sato
TGR5, a member of the G protein-coupled receptor (GPCR) family, is activated by bile acids. Because TGR5 promotes energy expenditure and improves glucose homeostasis, it is recognized as a key target in treating metabolic diseases. We previously showed that nomilin, a citrus limonoid, activates TGR5 and confers anti-obesity and anti-hyperglycemic effects in mice. Information on the TGR5-nomilin interaction regarding molecular structure, however, has not been reported. In the present study, we found that human TGR5 (hTGR5) shows higher nomilin responsiveness than does mouse TGR5 (mTGR5)...
2017: PloS One
https://www.readbyqxmd.com/read/28591793/dynamics-of-bile-acid-profiles-glp-1-and-fgf19-after-laparoscopic-gastric-banding
#14
Veronika Thöni, Alexandra Pfister, Andreas Melmer, Barbara Enrich, Karin Salzmann, Susanne Kaser, Claudia Lamina, Christoph F Ebenbichler, Hubert Hackl, Herbert Tilg, Alexander R Moschen
Context: Increase of bile acids (BAs), fibroblast growth factor 19 (FGF19) and glucagon-like peptide 1 (GLP-1) has been implicated in metabolic improvements after Roux-en-Y gastric bypass (RYGB) and vertical sleeve gastrectomy (VSG), whereas data are still conflicting regarding their role after laparoscopic adjustable gastric banding (LAGB). Objective: To assess fasting BA, FGF19 and GLP-1 concentrations in plasma before and after LAGB and to test for correlations with immuno-metabolic parameters...
June 7, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28590052/clinical-report-a-patient-with-a-late-diagnosis-of-cerebrotendinous-xanthomatosis-and-a-response-to-treatment
#15
Ahmad Alhariri, Katherine Hamilton, Vikash Oza, Kelly Cordoro, Nara L Sobreira, Mary Malloy, Anne Slavotinek
Cerebrotendinous xanthomatosis (CTX) is a rare, autosomal recessive, inborn error of bile acid metabolism characterized by diarrhea in infancy, juvenile cataracts in childhood, tendon xanthomas developing in the second to third decades of life, and progressive neurologic dysfunction in adulthood. The condition is caused by mutations in the CYP27A1 gene that result in decreased production of chenodeoxycholic acid (CDCA) and elevated levels of cholestanol and bile alcohols. We present a 36-year-old male of Han ethnicity who developed xanthomas of his Achilles tendons and suffered neurocognitive declines and gait deterioration in his second decade...
June 7, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28587159/effects-of-low-dose-non-caloric-sweetener-consumption-on-gut-microbiota-in-mice
#16
Takashi Uebanso, Ai Ohnishi, Reiko Kitayama, Ayumi Yoshimoto, Mutsumi Nakahashi, Takaaki Shimohata, Kazuaki Mawatari, Akira Takahashi
Abstract: Non-caloric artificial sweeteners (NASs) provide sweet tastes to food without adding calories or glucose. NASs can be used as alternative sweeteners for controlling blood glucose levels and weight gain. Although the consumption of NASs has increased over the past decade in Japan and other countries, whether these sweeteners affect the composition of the gut microbiome is unclear. In the present study, we examined the effects of sucralose or acesulfame-K ingestion (at most the maximum acceptable daily intake (ADI) levels, 15 mg/kg body weight) on the gut microbiome in mice...
June 1, 2017: Nutrients
https://www.readbyqxmd.com/read/28586308/an-extract-from-the-atlantic-brown-algae-sacchorhiza-polyschides-counteracts-diet-induced-obesity-in-mice-via-a-gut-related-multi-factorial-mechanisms
#17
Patricia Huebbe, Sibylle Nikolai, Anke Schloesser, Diran Herebian, Graeme Campbell, Claus-Christian Glüer, Annette Zeyner, Tobias Demetrowitsch, Karin Schwarz, Cornelia C Metges, Thomas Roeder, Gerhard Schultheiss, Ignacio R Ipharraguerre, Gerald Rimbach
In this study we addressed the questions whether an Atlantic brown algae extract (BAE) affects diet induced obesity in mice and which would be the primary targets and underlying key mechanisms.Male C57 BL/6 mice were fed a hypercaloric diet, referred to as high fat diet (HFD), supplemented with a freeze-dried aqueous BAE from Sacchorizia polyschides (5 %) for 8 months. Compared to the control group, dietary BAE supplementation significantly attenuated increase in body weight and fat mass. We observed apparent metabolic improvement including normalization of blood glucose, reduced plasma leptin, reduced fecal bile salt hydrolase activity with lower microbial production of toxic bile acid metabolites in the gut and increased systemic bile acid circulation in BAE-fed mice counteracting adverse effects of long term HFD feeding...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28583875/quantitative-profiling-of-19-bile-acids-in-rat-plasma-liver-bile-and-different-intestinal-section-contents-to-investigate-bile-acid-homeostasis-and-the-application-of-temporal-variation-of-endogenous-bile-acids
#18
Tingting Yang, Ting Shu, Guanlan Liu, Huifang Mei, Xiaoyu Zhu, Xin Huang, Luyong Zhang, Zhenzhou Jiang
Bile acid homeostasis is maintained by liver synthesis, bile duct secretion, microbial metabolism and intestinal reabsorption into the blood. When drug insults result in liver damage, the variances of bile acids (BAs) are related to the physiological status of the liver. Here, we established a method to simultaneously quantify 19 BAs in rat plasma, liver, bile and different intestinal section contents (duodenum, jejunum, ileum, cecum and colon) using high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) to reveal the pattern of bile acid homeostasis in the enterohepatic circulation of bile acids in physiological situations...
June 2, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28580281/glucagon-like-peptide-2-promotes-gallbladder-refilling-via-a-tgr5-independent-glp-2r-dependent-pathway
#19
Bernardo Yusta, Dianne Matthews, Grace B Flock, John R Ussher, Brigitte Lavoie, Gary M Mawe, Daniel J Drucker
OBJECTIVE: Glucagon-like peptides (GLPs) are secreted from enteroendocrine cells in response to nutrients and bile acids and control metabolism via actions on structurally-related yet distinct G protein coupled receptors. GLP-1 regulates gut motility, appetite, islet function, and glucose homeostasis, whereas GLP-2 enhances intestinal nutrient absorption. GLP-1R agonists are used to treat diabetes and obesity, and a GLP-2R agonist is approved to treat short bowel syndrome. Unexpectedly, reports of gallbladder disease have been associated with the use of both GLP-1R and GLP-2R agonists and after bariatric surgery, although the mechanisms remain unknown...
June 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28579962/the-crosstalk-between-the-gut-microbiota-and-mitochondria-during-exercise
#20
REVIEW
Allison Clark, Núria Mach
Many physiological changes occur in response to endurance exercise in order to adapt to the increasing energy needs, mitochondria biogenesis, increased reactive oxygen species (ROS) production and acute inflammatory responses. Mitochondria are organelles within each cell that are crucial for ATP production and are also a major producer of ROS and reactive nitrogen species during intense exercise. Recent evidence shows there is a bidirectional interaction between mitochondria and microbiota. The gut microbiota have been shown to regulate key transcriptional co-activators, transcription factors and enzymes involved in mitochondrial biogenesis such as PGC-1α, SIRT1, and AMPK genes...
2017: Frontiers in Physiology
keyword
keyword
111820
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"