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https://www.readbyqxmd.com/read/27909795/altered-gut-microbiota-in-ra-implications-for-treatment
#1
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
#2
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
#3
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/27881493/the-metabolic-profiling-of-isorhamnetin-3-o-neohesperidoside-produced-by-human-intestinal-flora-employing-uplc-q-tof-ms
#4
Le-Yue Du, Min Zhao, Jin-Hua Tao, Da-Wei Qian, Shu Jiang, Er-Xin Shang, Jian-Ming Guo, Pei Liu, Shu-Lan Su, Jin-Ao Duan
Isorhamnetin-3-O-neohesperidoside is the major active substance of Puhuang, a traditional herb medicine widely used in clinical practice to tackle many chronic diseases. However, little is known about the interactions between this ingredient and intestinal flora. In this study, ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry together with automated data analysis software (Metabolynx™) was used for analysis of the metabolic profile of isorhamnetin-3-O-neohesperidoside by the isolated human intestinal bacteria...
November 23, 2016: Journal of Chromatographic Science
https://www.readbyqxmd.com/read/27859774/a-metabolic-way-to-investigate-related-hurdles-caused-poor-bioavailability-in-oral-delivery-of-isoacteoside-in-rats-employing-uplc-q-tof-ms
#5
Qingling Cui, Yingni Pan, Xiaowei Yan, Bao Qu, Xiaoqiu Liu, Wei Xiao
RATIONALE: Isoacteoside (ISAT), a phenylethanoid glycoside, acting as the principal bioactive component in traditional Chinese medicines, possesses broad pharmacological effects such as neuroprotective, antihypertensive and hepatoprotective activities. However, its pharmaceutical development has been severely limited due to the poor oral bioavailability. It is essential and significant to investigate related hurdles leading to the poor bioavailability of isoacteoside. METHODS: Whole animal metabolism studies were conducted in rats, followed by metabolic mechanism including gastrointestinal stability, intestinal flora metabolism and intestinal enzyme metabolism employing the powerful ultra-high performance liquid chromatography equipped with quadrupole time-of-flight tandem mass spectrometry (UPLC-Q-TOF-MS)...
November 17, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/27856664/the-gut-brain-connection-triggering-of-brain-autoimmune-disease-by-commensal-gut-bacteria
#6
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/27849251/selection-of-superior-bifidobacteria-in-the-presence-of-rotavirus
#7
G Alp Avci
The main purpose of this study was to investigate bifidobacteria flora in fecal samples from children with rotavirus infection and determine the significance of their selected probiotic properties for improvement of health status. Enzyme-linked immunosorbent assay was used to identify rotavirus antigen in fecal samples from 94 patients with gastroenteritis and from 30 without gastroenteritis. Bifidobacteria were identified by selective media, gram reaction, colony morphology, fructose-6-phosphate phosphoketolase enzyme activity and classical identification tests...
November 10, 2016: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/27849120/review-gut-microbiota-and-functional-diseases-of-the-gastrointestinal-tract
#8
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/27846856/ethno-medicinal-survey-of-important-plants-practiced-by-indigenous-community-at-ladha-subdivision-south-waziristan-agency-pakistan
#9
Muhammad Abdul Aziz, Muhammad Adnan, Amir Hasan Khan, Atiq Ur Rehman, Rahmatullah Jan, Jafar Khan
BACKGROUND: Medicinal flora plays a vital role in treating various types of ailments in living beings. The present study was planned to investigate and document systematically the indigenous knowledge in a scientifically little explored area of Ladha sub-division, South Waziristan agency, Pakistan. Hence, this study would contribute positively to the field of ethnopharmacology. METHODS: Prior to ethnomedicinal data collection, regular field visits were conducted during the month of May and June 2015 to locate the sites and respondents from where the traditional knowledge was to be recorded...
November 15, 2016: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/27845212/microbial-biosensors-to-monitor-the-encapsulation-effectiveness-of-doxorubicin-in-chimeric-advanced-drug-delivery-nano-systems-a-calorimetric-approach
#10
Konstantinos Gardikis, Marco Signorelli, Chiara Ferrario, Alberto Schiraldi, Maria Grazia Fortina, Sophia Hatziantoniou, Costas Demetzos, Dimitrios Fessas
The release of the anticancer drug doxorubicin (DOX) incorporated in a new drug carrier, namely a chimeric nanosystem formed by liposomes and dendrimers, was studied following the influence of the drug on the growth kinetics of the Lactobacillus helveticus bacterium, that would mimic the intestinal microflora. The bacterial growth was followed at 37°C by means of Isothermal Titration Calorimetry (ITC) and the method was assessed to monitor the overall effect of the delivered drug obtaining simple objective parameters to define the encapsulation effectiveness of the system, discriminating dose effects even in cases of very low release...
November 11, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27836421/human-milk-is-the-feeding-strategy-to-prevent-necrotizing-enterocolitis
#11
REVIEW
Diana Maffei, Richard J Schanler
Human milk is the preferred diet for preterm infants as it protects against a multitude of NICU challenges, specifically necrotizing enterocolitis. Infants who receive greater than 50% of mother's own milk (MOM) in the 2 weeks after birth have a significantly decreased risk of NEC. An additional factor in the recent declining rates of NEC is the increased utilization of donor human milk (DHM). This creates a bridge until MOM is readily available, thus decreasing the exposure to cow milk protein. Preterm infants are susceptible to NEC due to the immaturity of their gastrointestinal and immune systems...
November 8, 2016: Seminars in Perinatology
https://www.readbyqxmd.com/read/27821716/postnatal-regulation-of-mamdc4-in-the-porcine-intestinal-epithelium-is-influenced-by-bacterial-colonization
#12
Alex J Pasternak, Glenn M Hamonic, Andrew Van Kessel, Heather L Wilson
The MAM domain-containing 4 (MAMDC4) protein is associated with the unique endocytotic mechanism observed in the intestine of mammals during the immediate postnatal period. Transcriptional expression of MAMDC4 was substantially upregulated at birth in both the piglet jejunum and ileum and its expression decreases after birth. The protein was found localized specifically to the apical region of the luminal epithelium, however, MAMDC4 protein expression was lost at day 10 and 15 in the jejunum and ileum, respectively, and was not associated with "fetal" enterocyte replacement...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27819481/characterization-of-klebsiella-sp-strain-s1-a-bacterial-producer-of-secoisolariciresinol-through-biotransformation
#13
Yu-Jie Zhou, Songling Zhu, Dong-Hui Yang, Dan-Dan Zhao, Jia-Jing Li, Shu-Lin Liu
Secoisolariciresinol (SECO) is a lignan of potential therapeutic value for diseases such as cancer, but its use has been limited by the lack of ideal production methods, even though its precursors are abundant in plants, such as flaxseeds. Here, we report the characterization of a bacterial strain, S1, isolated from the human intestinal flora, which could produce secoisolariciresinol by biotransformation of precursors in defatted flaxseeds. This bacterium was a Gram-negative and facultatively anaerobic straight rod without capsules...
June 29, 2016: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/27810239/responses-of-earthworms-and-microbial-communities-in-their-guts-to-triclosan
#14
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/27780943/the-prevalence-of-colonic-neoplasm-in-cryptogenic-pyogenic-liver-abscess-a-prospectively-enrolled-cross-sectional-study
#15
Nae Yun Heo, Young Mi Hong, Tae Oh Kim, Young Soo Moon, Sung Yeun Yang, Seung Ha Park, Jongha Park, Joon Hyuk Choi, Sung Min Kim, Ki Tae Yoon, Mong Cho, Minkyung Oh
Background/Aims: Several studies suggest that pyogenic liver abscess (PLA) is associated with colon neoplasm. A colonoscopic exam for cryptogenic PLA might detect a hidden colon neoplasm, through which intestinal flora can be transmitted into the liver. However, there are no prospectively enrolled cross-sectional data for colonic neoplasm in cryptogenic PLA. Methods: Patients with PLA were prospectively enrolled from two university hospitals. Among them, all the patients with cryptogenic PLA were recommended for colonoscopic exam to check for colonic neoplasm...
October 25, 2016: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
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
#16
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
https://www.readbyqxmd.com/read/27777189/-diversity-of-intestinal-microflora-in-patients-with-depression-after-stroke
#17
Wen-Tao Fan, Yong-Mei Yan, Yu-Long Bie, Qian Wang
OBJECTIVE: To investigate the changes in the population and distribution intestinal microflora and their relationship with depression in post-stroke patients. METHODS: Fecal specimens were obtained from 32 patients with post-stroke depression and 30 healthy adults for gene sequencing of 16S RNA V3 region of the intestinal microorganism using Roche/45 high-throughput sequencing platform. RESULTS: The genus and species of intestinal bacteria showed significant differences between the post-stroke patients and health adults...
October 20, 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/27769943/mucoadhesive-chitosan-hydrogels-as-rectal-drug-delivery-vessels-to-treat-ulcerative-colitis
#18
Jinke Xu, Mifong Tam, Sepideh Samaei, Sophie Lerouge, Jake Barralet, Mary M Stevenson, Marta Cerruti
: Mucoadhesive drug delivery systems stick to mucosal tissues and prolong the local retention time of drugs. Since the colon is covered by a mucosal layer, mucoadhesive rectal formulations may improve treatment of such diseases as hypertension or colon cancer. Ulcerative colitis (UC) is an inflammatory bowel disease characterized by chronic inflammation of the colonic mucosa. It is commonly treated with sulfasalazine (SSZ), which is metabolized by the intestinal flora into the therapeutic 5-aminosalicylic acid (5-ASA) and a toxic by-product sulfapyridine (SP)...
October 18, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27761923/biotransformation-and-metabolic-profile-of-anemoside-b4-with-rat-small-and-large-intestine-microflora-by-ultra-high-performance-liquid-chromatography-quadrupole-time-of-flight-tandem-mass-spectrometry
#19
Jin-Yi Wan, Yu-Zhen Zhang, Jin-Bin Yuan, Feng-Qing Yang, Yan Chen, Lian-Di Zhou, Qi-Hui Zhang
Pulsatilla chinensis (Bunge) Regel has been commonly used in Asia, and Anemoside B4 conducted as its major saponin with diverse pharmaceutical effects. Previous studies showed that intestinal flora plays an important role in the metabolism of herbs administered orally. In this study, the metabolic profile of AB4 with microflora in rat small and large intestine in vitro was investigated. Gut microflora was collected from different intestinal segments and anaerobically incubated with AB4 at 37 °C for 24, 48, 72 and 96 h, respectively...
October 19, 2016: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/27757565/the-impact-of-lactoferrin-with-different-levels-of-metal-saturation-on-the-intestinal-epithelial-barrier-function-and-mucosal-inflammation
#20
Grzegorz Majka, Grażyna Więcek, Małgorzata Śróttek, Klaudyna Śpiewak, Małgorzata Brindell, Joanna Koziel, Janusz Marcinkiewicz, Magdalena Strus
Translocation of bacteria, primarily Gram-negative pathogenic flora, from the intestinal lumen into the circulatory system leads to sepsis. In newborns, and especially very low birth weight infants, sepsis is a major cause of morbidity and mortality. The results of recently conducted clinical trials suggest that lactoferrin, an iron-binding protein that is abundant in mammalian colostrum and milk, may be an effective agent in preventing sepsis in newborns. However, despite numerous basic studies on lactoferrin, very little is known about how metal saturation of this protein affects a host's health...
December 2016: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
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