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https://www.readbyqxmd.com/read/28295896/assessing-the-colonic-microbiome-hydrogenogenic-and-hydrogenotrophic-genes-transit-and-breath-methane-in-constipation
#1
P G Wolf, G Parthasarathy, J Chen, H M O'Connor, N Chia, A E Bharucha, H Rex Gaskins
BACKGROUND: Differences in the gut microbiota and breath methane production have been observed in chronic constipation, but the relationship between colonic microbiota, transit, and breath tests remains unclear. METHODS: In 25 healthy and 25 constipated females we evaluated the sigmoid colonic mucosal and fecal microbiota using 16S rRNA gene sequencing, abundance of hydrogenogenic FeFe (FeFe-hydA) and hydrogenotrophic (methyl coenzyme M reductase A [mrcA] and dissimilatory sulfite reductase A [dsrA]) genes with real-time qPCR assays, breath hydrogen and methane levels after oral lactulose, and colonic transit with scintigraphy...
March 13, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28290057/intestinal-fatty-acid-binding-protein-and-gut-permeability-responses-to-exercise
#2
Daniel S March, Tania Marchbank, Raymond J Playford, Arwel W Jones, Rhys Thatcher, Glen Davison
PURPOSE: Intestinal cell damage due to physiological stressors (e.g. heat, oxidative, hypoperfusion/ischaemic) may contribute to increased intestinal permeability. The aim of this study was to assess changes in plasma intestinal fatty acid-binding protein (I-FABP) in response to exercise (with bovine colostrum supplementation, Col, positive control) and compare this to intestinal barrier integrity/permeability (5 h urinary lactulose/rhamnose ratio, L/R). METHODS: In a double-blind, placebo-controlled, crossover design, 18 males completed two experimental arms (14 days of 20 g/day supplementation with Col or placebo, Plac)...
March 13, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28286191/increased-intestinal-permeability-in-relatives-of-patients-with-crohn-s-disease-is-not-associated-with-small-bowel-ulcerations
#3
Christopher W Teshima, Karen J Goodman, Mohamed El-Kalla, Samina Turk, Wael El-Matary, Rosica Valcheva, Ronda Danchak, Marilyn Gordon, Peter Ho, Amanda Mullins, Daniel Wong, Dina Kao, Jonathan Meddings, Hien Huynh, Levinus A Dieleman
BACKGROUND & AIMS: Many first-degree relatives of patients with Crohn's disease (CD) have increased intestinal permeability. Video capsule endoscopy (VCE) is the most sensitive imaging test to identify small bowel mucosal lesions that indicate subclinical CD. We aimed to estimate the association of increased intestinal permeability with small bowel ulcerations detectable by VCE in healthy first-degree relatives of patients with CD. METHODS: We conducted a cross-sectional study of 223 healthy, asymptomatic first-degree relatives of patients with CD (parents, siblings, and children; 9-45 years old) enrolled at the University of Alberta between 2009 and 2012...
March 7, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28285222/efficient-production-of-lactulose-from-whey-powder-by-cellobiose-2-epimerase-in-an-enzymatic-membrane-reactor
#4
Lingtian Wu, Cen Xu, Sha Li, Jinfeng Liang, Hong Xu, Zheng Xu
In this study, the gene encoding cellobiose 2-epimerase from Caldicellulosiruptor saccharolyticus (CsCE) was successfully expressed in Bacillus subtilis WB800. After the fermentation medium optimization, the activity of recombinant strain was 4.5-fold higher than the original medium in a 7.5L fermentor. The optimal catalytic pH and temperature of crude CsCE were 7.0 and 80°C, respectively. An enzymatic synthesis of lactulose was developed using cheese-whey lactose as its substrate. The maximum conversion rate of whey powder obtained was 58...
March 2, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28281782/effects-of-lactulose-and-silymarin-on-liver-enzymes-in-cirrhotic-rats
#5
Mozhgan Ghobadi Pour, Naser Mirazi, Hojjatollah Alaei, Shirin Moradkhani, Ziba Rajaei, Alireza Monsef Esfahani
Silymarin, a mixture of antihepatotoxic flavonolignans used in the treatment of liver diseases, and lactulose, a nonabsorbable synthetic disaccharide, were investigated to analyze their probable synergic and healing effects in a hepatic cirrhotic rat model. Liver damage was induced by the administration and subsequent withdrawal of thioacetamide. The significant decrease in liver enzymes and malondialdehyde levels confirmed the curative effects of silymarin and lactulose. In the silymarin + lactulose group, liver enzyme and malondialdehyde levels were significantly reduced compared with those in the thioacetamide group...
March 10, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28281512/-specific-features-of-impaired-intestinal-digestion-absorption-and-microbiocenosis-in-patients-with-cholelithiasis
#6
Ya M Vakhrushev, A P Lukashevich
AIM: To perform a comprehensive study of intestinal digestion, absorption, and microbiocenosis in various stages of cholelithiasis (CL). SUBJECTS AND METHODS: A total of 76 patients with of CL, including 44 patients with its Stage I and 32 patients with Stage II, were examined. Mono-, di - and polysaccharide load tests and a scatological study were performed to evaluate the processes of digestion and absorption in the intestine. The hydrogen breath test using lactulose was carried out to study small intestinal bacterial overgrowth (SIBO)...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28277337/biomarkers-of-environmental-enteric-dysfunction-among-children-in-rural-bangladesh
#7
Rebecca K Campbell, Kerry Schulze, Saijuddin Shaikh, Sucheta Mehra, Hasmot Ali, Lee Wu, Rubhana Raqib, Sarah Baker, Alain Labrique, Keith P West, Parul Christian
OBJECTIVES: Environmental enteric dysfunction (EED) may inhibit growth and development in low- and middle-income countries, but available assessment methodologies limit its study. In rural Bangladesh, we measured EED using the widely-used lactulose mannitol ratio (L:M) test and a panel of intestinal and systemic health biomarkers to evaluate convergence among biomarkers and describe risk factors for EED. METHODS: In 539 18-month-old children finishing participation in a randomized food supplementation trial, serum, stool and urine collected after lactulose and mannitol dosing were analyzed for biomarkers of intestinal absorption, inflammation, permeability and repair, and systemic inflammation...
March 8, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28275113/potential-mechanisms-of-effects-of-serum-derived-bovine-immunoglobulin-protein-isolate-therapy-in-patients-with-diarrhea-predominant-irritable-bowel-syndrome
#8
Nelson Valentin, Michael Camilleri, Paula Carlson, Sean C Harrington, Deborah Eckert, Jessica O'Neill, Duane Burton, Jun Chen, Audrey L Shaw, Andres Acosta
Serum-derived bovine immunoglobulin/protein isolate (SBI), an oral nutritional therapy, is efficacious in diverse diarrheal diseases. In an open-label study in 15 patients with irritable bowel syndrome-diarrhea (IBS-D), we evaluated effects of SBI (5.0 g, twice a day) for 8 weeks on safety, on bowel function and abdominal pain, tryptophan metabolism (K:T ratio), intestinal permeability ((13)C-mannitol and lactulose excretion), bile acid synthesis (fasting serum FGF-19 and C4), duodenal and stool microbiome, and the expression of 90 genes related to inflammation, immune function, and tight junctions in duodenal mucosa...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28274108/small-intestinal-bacterial-overgrowth-and-irritable-bowel-syndrome-a-bridge-between-functional-organic-dichotomy
#9
REVIEW
Uday C Ghoshal, Ratnakar Shukla, Ujjala Ghoshal
The pathogenesis of irritable bowel syndrome (IBS), once thought to be largely psychogenic in origin, is now understood to be multifactorial. One of the reasons for this paradigm shift is the realization that gut dysbiosis, including small intestinal bacterial overgrowth (SIBO), causes IBS symptoms. Between 4% and 78% of patients with IBS and 1% and 40% of controls have SIBO; such wide variations in prevalence might result from population differences, IBS diagnostic criteria, and, most importantly, methods to diagnose SIBO...
March 15, 2017: Gut and Liver
https://www.readbyqxmd.com/read/28273273/prevalence-of-small-intestine-bacterial-overgrowth-in-patients-with-gastrointestinal-symptoms
#10
Carolina Piedade Martins, Caio Henrique Amorim Chaves, Maurício Gustavo Bravim de Castro, Isabel Cristina Gomes, Maria do Carmo Friche Passos
BACKGROUND: Small intestine bacterial overgrowth is a heterogeneous syndrome characterized by an increase in the number and/or the presence of atypical microbiota in the small intestine. The symptoms of small intestine bacterial overgrowth are unspecific, encompassing abdominal pain/distension, diarrhea and flatulence. Due to the increased cost and complexity for carrying out the jejunal aspirate, the gold standard for diagnosis of the syndrome, routinely the hydrogen (H 2 ) breath test has been used, utilizing glucose or lactulose as substrate, which is able to determine, in the exhaled air, the H 2 concentration produced from the intestinal bacterial metabolism...
February 23, 2017: Arquivos de Gastroenterologia
https://www.readbyqxmd.com/read/28264759/environmental-enteropathy-is-associated-with-cardiometabolic-risk-factors-in-peruvian-children
#11
G O Lee, M Paredes Olortegui, M Siguas Salas, P Peñataro Yori, D Rengifo Trigoso, P Kosek, M L Mispireta, R Oberhelman, L E Caulfield, M N Kosek
Environmental enteropathy (EE) is a syndrome of altered small intestine structure and function hypothesized to be common among individuals lacking access to improved water and sanitation. There are plausible biological mechanisms, both inflammatory and non-inflammatory, by which EE may alter the cardiometabolic profile. Here, we test the hypothesis that EE is associated with the cardiometabolic profile among young children living in an environment of intense enteropathogen exposure. In total, 156 children participating in the Peruvian cohort of a multicenter study on childhood infectious diseases, growth and development were contacted at 3-5 years of age...
March 7, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28258834/the-effect-of-omeprazole-treatment-on-the-gut-microflora-and-neutrophil-function
#12
Maja Kostrzewska, Agnieszka Świdnicka-Siergiejko, Dorota Olszańska, Grażyna Jurkowska, Marzena Garley, Wioletta Ratajczak-Wrona, Ewa Jabłońska, Jacek Jamiołkowski, Andrzej Dabrowski
BACKGROUND AND AIM: Proton pump inhibitors (PPIs) may increase the risk of Clostridium difficile infections. There are interactions between gut microbiota and innate immune cells including neutrophils. We evaluated the effect of treatment with omeprazole on the gut microflora and neutrophil function. METHODS: In 50 patients, we evaluated the effect of 4-week omeprazole treatment (n=25 with 20mg per day and n=25 with 20mg twice daily) on intragastric pH, results of stool culture and lactulose hydrogen breath test (LHBT) and neutrophil function...
March 1, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28252294/hidden-reaction-mesophilic-cellobiose-2-epimerases-produce-lactulose
#13
Beatrice Kuschel, Ines Seitl, Claudia Glück, Wanmeng Mu, Bo Jiang, Timo Stressler, Lutz Fischer
Lactulose (4-O-β-D-galactopyranosyl-D-fructofuranose) is a prebiotic sugar derived from the milk sugar lactose (4-O-β-D-galactopyranosyl-D-glucopyranose). In our study we observed for the first time, that known cellobiose 2-epimerases (CEs; EC 5.1.3.11) from mesophilic microorganisms were generally able to catalyze the isomerization reaction of lactose into lactulose. Commonly, CEs catalyze the C2-epimerization of D-glucose and D-mannose moieties at the reducing end of β-1,4-glycosidic-linked oligosaccharides...
March 2, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28246601/is-hydrogen-breath-test-with-lactulose-feasible-for-measuring-gastrocecal-transit-in-critically-ill-children-pilot-study-about-modification-of-the-technique
#14
J López, C Sánchez, S N Fernández, R González, M J Solana, J Urbano, M Tolín, J López-Herce
Introduction. Gastrocecal transit time (GCTT) can be measured by exhaled hydrogen after lactulose intake (lactulose-eH2 test). The objectives were to assess whether it is possible to carry out this test in critically ill children with and without mechanical ventilation (MV) and to analyze whether the results are consistent with clinical findings. Methods. Patients admitted to the Pediatric Intensive Care Unit (PICU) for more than 3 days were included. Those with gastrointestinal disease prior to admission were excluded...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28244675/the-clinical-value-of-breath-hydrogen-testing
#15
REVIEW
Chu K Yao, Caroline J Tuck
Breath hydrogen testing for assessing the presence of carbohydrate malabsorption is frequently applied to refine dietary restrictions on a low fermentable carbohydrate (FODMAP) diet. Its application has also been extended for the detection of small intestinal bacterial overgrowth. Recently, several caveats of its methodology and interpretation have emerged. A review of the evidence surrounding its application in the management of patients with a functional bowel disorder was performed. Studies were examined to assess limitations of testing methodology, interpretation of results, reproducibility, and how this relates to clinical symptoms...
March 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28230908/probiotics-for-people-with-hepatic-encephalopathy
#16
REVIEW
Rohan Dalal, Richard G McGee, Stephen M Riordan, Angela C Webster
BACKGROUND: Hepatic encephalopathy is a disorder of brain function as a result of liver failure or portosystemic shunt or both. Both hepatic encephalopathy (clinically overt) and minimal hepatic encephalopathy (not clinically overt) significantly impair patient's quality of life and daily functioning, and represent a significant burden on healthcare resources. Probiotics are live micro-organisms, which when administered in adequate amounts, may confer a health benefit on the host. OBJECTIVES: To determine the beneficial and harmful effects of probiotics in any dosage, compared with placebo or no intervention, or with any other treatment for people with any grade of acute or chronic hepatic encephalopathy...
February 23, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28230705/determinant-variables-enteric-pathogen-burden-gut-function-and-immune-related-inflammatory-biomarkers-associated-with-childhood-malnutrition-a-prospective-case-control-study-in-northeastern-brazil
#17
Aldo Am Lima, Álvaro M Leite, Alessandra Di Moura, Noélia L Lima, Alberto M Soares, Cláudia B Abreu, José Quirino Filho, Rosa Ms Mota, Ila Fn Lima, Alexandre Havt, Pedro Hqs Medeiros, Mara Mg Prata, Marjorie M Guedes, Paloma A Cavalcante, Herlice N Veras, Ana Ks Santos, Sean R Moore, Relana C Pinkerton, Eric R Houpt, Richard L Guerrant
Malnutrition results in serious consequences for growth and cognitive development in children. We studied select child and maternal biological factors, socio-economic factors, enteric pathogenic burden, and gut function biomarkers in 402 children 6-24 months of age in North-eastern Brazil. In this prospective case-control study, not being fed colostrum (odds ratio [OR] = 3.29, 95% confidence interval [CI] 1.73-6.26), maternal age ≥18 years (OR = 1.88, 95% CI 1.10-3.22), and no electrical fan (OR = 2.46, 95% CI 1...
February 22, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28223728/levothyroxine-therapy-and-impaired-clearance-are-the-strongest-contributors-to-small-intestinal-bacterial-overgrowth-results-of-a-retrospective-cohort-study
#18
Thorsten Brechmann, Andre Sperlbaum, Wolff Schmiegel
AIM: To identify a set of contributors, and weight and rank them on a pathophysiological basis. METHODS: Patients who have undergone a lactulose or glucose hydrogen breath test to rule out small intestinal bacterial overgrowth (SIBO) for various clinical symptoms, including diarrhoea, weight loss, abdominal pain, cramping or bloating, were seen as eligible for inclusion in a retrospective single-centre study. Clinical data such as co-morbidities, medication, laboratory parameters and other possible risk factors have been identified from the electronic data system...
February 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28215096/colonic-obstruction-secondary-to-sigmoid-fecaloma-endoscopically-resolved-with-coca-cola%C3%A2
#19
Guillermo Ontanilla Clavijo, Rafael León Montañés, Yolanda Sánchez Torrijos, Teófilo López Ruiz, Juan Manuel Bozada García
BACKGROUND: Colonic obstruction is a relatively common condition in emergency care, with a mortality rate of up to 20%. In 90% of cases it results from colonic or rectal adenocarcinoma, volvulus, or stenosis secondary to diverticular disease. When fecal impaction is the underlying cause, the condition is usually managed conservatively, but may on occasion become complicated and even require surgical intervention. Based on the proven efficacy of Coca-Cola® to dissolve gastric phytobezoars, we report a case of colonic obstruction secondary to sigmoid fecaloma...
February 20, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28214445/immobilization-of-aspergillus-oryzae-%C3%AE-galactosidase-in-an-agarose-matrix-functionalized-by-four-different-methods-and-application-to-the-synthesis-of-lactulose
#20
Cecilia Guerrero, Carlos Vera, Nestor Serna, Andrés Illanes
Aspergillus oryzae β-galactosidase was immobilized in monofunctional glyoxyl-agarose and heterofunctional supports (amino-glyoxyl, carboxy-glyoxyl and chelate-glyoxyl agarose), for obtaining highly active and stable catalysts for lactulose synthesis. Specific activities of the amino-glyoxyl agarose, carboxy-glyoxyl agarose and chelate-glyoxyl agarose derivatives were 3676, 430 and 454IU/g biocatalyst with half-life values at 50°C of 247, 100 and 100h respectively. Specific activities of 3490, 2559 and 1060IU/g were obtained for fine, standard and macro agarose respectively...
February 7, 2017: Bioresource Technology
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