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intestinal malabsorption

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https://www.readbyqxmd.com/read/27929465/using-multi-fluorinated-bile-acids-and-in-vivo-magnetic-resonance-imaging-to-measure-bile-acid-transport
#1
Jessica Felton, Kunrong Cheng, Anan Said, Aaron C Shang, Su Xu, Diana Vivian, Melissa Metry, James E Polli, Jean-Pierre Raufman
Along with their traditional role as detergents that facilitate fat absorption, emerging literature indicates that bile acids are potent signaling molecules that affect multiple organs; they modulate gut motility and hormone production, and alter vascular tone, glucose metabolism, lipid metabolism, and energy utilization. Changes in fecal bile acids may alter the gut microbiome and promote colon pathology including cholerrheic diarrhea and colon cancer. Key regulators of fecal bile acid composition are the small intestinal Apical Sodium-dependent Bile Acid Transporter (ASBT) and fibroblast growth factor-19 (FGF19)...
November 27, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27904960/active-and-passive-involvement-of-claudins-in-the-pathophysiology-of-intestinal-inflammatory-diseases
#2
REVIEW
Christian Barmeyer, Michael Fromm, Jörg-Dieter Schulzke
Intestinal inflammatory diseases, four of which are discussed here, are associated with alterations of claudins. In ulcerative colitis, diarrhea and antigen entry into the mucosa occurs. Claudin-2 is upregulated but data on other claudins are still limited or vary (e.g., claudin-1 and -4). Apart from that, tight junction changes contribute to diarrhea via a leak flux mechanism, while protection against antigen entry disappears behind epithelial gross lesions (erosions) and apoptotic foci. Crohn's disease is additionally characterized by a claudin-5 and claudin-8 reduction which plays an active role in antigen uptake already before gross lesions appear...
November 30, 2016: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/27900603/enteropathy-associated-t-cell-lymphoma
#3
REVIEW
Sarah Ondrejka, Deepa Jagadeesh
Enteropathy-associated T-cell lymphoma is a rare neoplasm with uniformly aggressive features that arises from intestinal T-cells. There is strong evidence supporting its association as a dire complication of celiac disease. The clinical presentation can vary from malabsorption and abdominal pain to an acute abdominal emergency. Originally, it was divided into types I and II in World Health Organization (WHO) classification schemes, reflective of epidemiology and differences in clinicopathologic features. The debate over the degree of separation of the two types is ongoing as new data emerges regarding the pathogenetics...
November 29, 2016: Current Hematologic Malignancy Reports
https://www.readbyqxmd.com/read/27875355/novel-mutations-in-epcam-cause-congenital-tufting-enteropathy
#4
Wenjuan Tang, Taosheng Huang, Zhongyao Xu, Ying Huang
BACKGROUND AND AIMS: Congenital tufting enteropathy (CTE) is a rare autosomal recessive form of intractable diarrhea of infancy. Patients develop chronic diarrhea within days after birth, leading to severe malabsorption and significant mortality. CTE is characterized by subtotal villous atrophy with crypt hyperplasia. Typical features include abnormal villi in the intestinal epithelium and disorganization of surface enterocytes with focal crowding, resembling tufts. The pathogenesis of CTE remains poorly understood...
November 21, 2016: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/27849236/treatment-of-short-bowel-syndrome-in-children-value-of-the-intestinal-rehabilitation-program
#5
Uenis Tannuri, Fabio de Barros, Ana Cristina Aoun Tannuri
The main cause of acute intestinal failure is short bowel syndrome, generally as a result of resection of extensive segments of small intestine. As a result, the main symptoms are watery diarrhea, malabsorption syndrome, chronic malnutrition, and death, if the patient is not properly treated. If the length of the remaining intestine is greater than 30 cm, complete adaptation is possible and the patient may not require parenteral nutrition. The currently recommended treatment includes the use of prolonged parenteral nutrition and enteral nutrition, always aimed at constant weight gain, in conjunction with surgeries aimed at elongating the dilated bowel...
September 2016: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/27830928/oral-iron-absorption-test-with-ferrous-bisglycinate-chelate-in-children-with-celiac-disease-preliminary-results
#6
Giuseppe A Mazza, Luisa Pedrelli, Elisabetta Battaglia, Laura Giancotti, Roberto Miniero
BACKGROUND: Celiac disease (CD) is an immunologically-mediated enteropathy resulting in small-bowel mucosal villous atrophy with crypt hyperplasia. Iron malabsorption is usually observed in CD. Only few studies investigated oral iron absorption in subjects with gastrointestinal diseases and Iron Deficiency Anemia (IDA), using the oral iron absorption test (OIAT). We considered useful to investigate the OIAT, using Ferrous Bisglycinate Chelate (FBC), in patients with CD at diagnosis or on Gluten Free Diet (GFD) from at least 1 year...
November 10, 2016: Minerva Pediatrica
https://www.readbyqxmd.com/read/27825568/osteoarticular-manifestations-of-celiac-disease-and-non-celiac-gluten-hypersensitivity
#7
Stéphanie Dos Santos, Frédéric Lioté
Celiac disease is a chronic inflammatory autoimmune enteropathy based disorder that is triggered by the ingestion of gluten in genetically susceptible individuals. The global prevalence of 1% to 2% represents only the tip of the iceberg. The diagnosis is confirmed by positive specific antibody, anti-transglutaminase or anti-endomysium, specific lesions of the small intestine and a response to strict gluten-free diet. The diagnosis is difficult and often delayed because the clinical variability is very large, ranging from digestive clinical presentation "classic" to "atypical" symptoms, often extra-intestinal, that are sometimes attributed to a concomitant disease or a complication...
November 4, 2016: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/27818276/role-of-vitamin-d-on-gut-microbiota-in-cystic-fibrosis
#8
REVIEW
Mansi Kanhere, Benoit Chassaing, Andrew T Gewirtz, Vin Tangpricha
This review explores the potential for vitamin D to favorably alter the gut microbiota, given emerging evidence of the role of vitamin D in controlling mucosal inflammation in the gut. It will focus on cystic fibrosis (CF) patients, a population with both vitamin D deficiency due to gut malabsorption and an altered gut microbiota composition. Recent evidence shows that vitamin D acts to maintain the integrity of the gut mucosal barrier by enhancement of intercellular junctions that control mucosal permeability and reduction of pro-inflammatory cytokines such as IL-8...
November 3, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27785047/managing-the-pediatric-patient-with-celiac-disease-a-multidisciplinary-approach
#9
REVIEW
Daniela Migliarese Isaac, Jessica Wu, Diana R Mager, Justine M Turner
Celiac disease (CD) is an autoimmune reaction to gluten, leading to intestinal inflammation, villous atrophy, and malabsorption. It is the most common autoimmune gastrointestinal disorder, with an increasing prevalence. A life-long gluten-free diet (GFD) is an effective treatment to alleviate symptoms, normalize autoantibodies, and heal the intestinal mucosa in patients with CD. Poorly controlled CD poses a significant concern for ongoing malabsorption, growth restriction, and the long-term concern of intestinal lymphoma...
2016: Journal of Multidisciplinary Healthcare
https://www.readbyqxmd.com/read/27784959/endocrine-manifestations-in-celiac-disease
#10
REVIEW
Hugh James Freeman
Celiac disease (CD) is an autoimmune small intestinal mucosal disorder that often presents with diarrhea, malabsorption and weight loss. Often, one or more associated endocrine disorders may be associated with CD. For this review, methods involved an extensive review of published English-language materials. In children and adolescents, prospective studies have demonstrated a significant relationship to insulin-dependent or type 1 diabetes, whereas in adults, autoimmune forms of thyroid disease, particularly hypothyroidism, may commonly co-exist...
October 14, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27774805/-fructose-and-fructose-intolerance
#11
György Miklós Buzás
Although fructose was discovered in 1794, it was realised in recent decades only that its malabsorption can lead to intestinal symptoms while its excessive consumption induces metabolic disturbances. Fructose is a monosaccharide found naturally in most fruits and vegetables. Dietary intake of fructose has gradually increased in the past decades, especially because of the consumption of high fructose corn syrup. With its 16.4 kg/year consumption, Hungary ranks secondly after the United States. Fructose is absorbed in the small intestine by facilitated transport mediated by glucose transporter proteins-2 and -5, and arrives in the liver cells...
October 2016: Orvosi Hetilap
https://www.readbyqxmd.com/read/27773655/structural-determinants-for-transport-of-lactase-phlorizin-hydrolase-in-the-early-secretory-pathway-as-a-multi-domain-membrane-glycoprotein
#12
Lena Diekmann, Marc Behrendt, Mahdi Amiri, Hassan Y Naim
BACKGROUND: Lactase phlorizin-hydrolase (LPH) is a membrane anchored type I glycoprotein of the intestinal epithelium that is composed of four homologous structural domains. The role of each distinct domain in the intramolecular organization and function of LPH is not completely understood. METHODS: Here, we analyzed the early events of LPH biosynthesis and trafficking by directed restructuring of the domain compositions. RESULTS: Removal of domain I (LPH∆1) results in a malfolded ER-localized protein...
January 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27765806/perforated-jejunal-diverticulum-a-rare-case-of-acute-abdomen
#13
Rishabh Sehgal, Cherry X Cheung, Tristram Hills, Aqueel Waris, Donagh Healy, Tahir Khan
Jejunal pseudo-diverticulosis is a rare acquired herniation of the mucosa and submucosa through weakened areas of the muscularis mucosa of the mesenteric aspect of the bowel. They are asymptomatic in the majority of cases; however, they can present with a wide spectrum of non-specific symptoms such as chronic abdominal discomfort, postprandial flatulence, diarrhoea, malabsorption and steattorhoea. In up to 15% of cases, more serious acute complications may arise such as the development of intestinal obstruction, haemorrhage or as in our case, localized peritonitis secondary to perforation...
October 7, 2016: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/27762112/importance-of-therapeutic-drug-monitoring-of-rifampicin
#14
Prerna K Chawla, Zarir F Udwadia, Rajeev Soman, Ashok A Mahashur, Rohit A Amale, Alpa J Dherai, Rohan V Lokhande, Prasad R Naik, Tester F Ashavaid
Therapeutic Drug Monitoring (TDM) is a routinely practised clinical laboratory technique which aids the clinicians with a clear clinical judgement of the drug therapy and optimize the doses if necessary. Rifampicin is the most important and potent component of first line therapy of tuberculosis (TB). Several factors like age, weight, gender, doses and formulations, gastro-intestinal disorders, ethnicity etc alter the absorption and bioavailability of rifampicin thus altering the drug levels. Low plasma levels of rifampicin may play a plausible role in slow response to therapy, treatment failure or relapse or acquired drug resistance...
August 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27753065/chronic-norovirus-infection-and-common-variable-immunodeficiency
#15
Jeremy Woodward, Effrossyni Gkrania-Klotsas, Dinakantha Kumararatne
Chronic infection with Norovirus is emerging as a significant risk for patients with immunodeficiency - either primary or secondary to therapeutic immunosuppression. Patients with primary immunodeficiency present a range of pathological responses to Norovirus infection. Asymptomatic infections occur and differentiating viral carriage or prolonged viral shedding after self-limiting infection from infection causing protracted diarrhoea can be challenging due to relatively mild pathological changes that may mimic other causes of diarrhoea in such patients (for instance pathogenic bacteria or parasites or graft-versus-host disease)...
October 18, 2016: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/27723911/d-lactic-acidosis-case-report-and-review-of-the%C3%A2-literature
#16
E Fabian, L Kramer, F Siebert, C Högenauer, R B Raggam, H Wenzl, G J Krejs
D-lactic acidosis is a rare complication that occurs mainly in patients with malabsorption due to a surgically altered gastrointestinal tract anatomy, namely in short bowel syndrome or after bariatric surgery. It is characterized by rapid development of neurological symptoms and severe metabolic acidosis, often with a high serum anion gap. Malabsorbed carbohydrates can be fermented by colonic microbiota capable of producing D-lactic acid. Routine clinical assessment of serum lactate covers only L-lactic acid; when clinical suspicion for D-lactic acidosis is high, special assays for D-lactic acid are called for...
October 10, 2016: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/27714440/celiac-disease-is-associated-with-reduced-bone-mineral-density-and-increased-frax-scores-in-the-us-national-health-and-nutrition-examination-survey
#17
E Kamycheva, T Goto, C A Camargo
: We investigated the association between celiac disease (CD) and bone mass density (BMD) and risk of osteoporotic fractures in the general US population. In children and men ≥18 years, CD was associated with reduced BMD, and in men ≥40 years, CD was associated with increased risk of osteoporotic fractures. INTRODUCTION: Celiac disease (CD) is an autoimmune condition, characterized by inflammation of the small intestine. CD has an increasing prevalence, and if unrecognized or untreated, CD can lead to complications from malabsorption and micronutrient deficiencies...
October 6, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27709245/cystic-fibrosis-a-clinical-view
#18
Carlo Castellani, Baroukh M Assael
Cystic fibrosis (CF), a monogenic disease caused by mutations in the CFTR gene on chromosome 7, is complex and greatly variable in clinical expression. Airways, pancreas, male genital system, intestine, liver, bone, and kidney are involved. The lack of CFTR or its impaired function causes fat malabsorption and chronic pulmonary infections leading to bronchiectasis and progressive lung damage. Previously considered lethal in infancy and childhood, CF has now attained median survivals of 50 years of age, mainly thanks to the early diagnosis through neonatal screening, recognition of mild forms, and an aggressive therapeutic attitude...
October 5, 2016: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/27707818/monoacylglycerol-enriched-oil-increases-epa-dha-delivery-to-circulatory-system-in-humans-with-induced-lipid-malabsorption-conditions
#19
Cristina Cruz-Hernandez, Frédéric Destaillats, Sagar K Thakkar, Laurence Goulet, Emma Wynn, Dominik Grathwohl, Claudia Roessle, Sara de Giorgi, Luc Tappy, Francesca Giuffrida, Vittorio Giusti
It was hypothesized that under induced lipid malabsorption/maldigestion conditions, an enriched sn-1(3)-monoacylglycerol (MAG) oil may be a better carrier for n-3 long-chain PUFAs (LC-PUFAs) compared with triacylglycerol (TAG) from fish oil. This monocentric double blinded clinical trial examined the accretion of EPA (500 mg/day) and DHA (300 mg/day) when consumed as TAG or MAG, into the erythrocytes, plasma, and chylomicrons of 45 obese (BMI ≥30 kg/m(2) and ≤40 kg/m(2)) volunteers who were and were not administered Orlistat, an inhibitor of pancreatic lipases...
December 2016: Journal of Lipid Research
https://www.readbyqxmd.com/read/27677253/lactose-malabsorption-in-systemic-sclerosis
#20
I Marie, A-M Leroi, G Gourcerol, H Levesque, J-F Menard, P Ducrotte
BACKGROUND: There are no studies on systemic sclerosis (SSc) assessing the relationship between food intake, especially lactose, and gastrointestinal dysfunction. AIM: To determine the prevalence of lactose malabsorption, using lactose breath test, in patients with SSc. To evaluate the correlation between lactose malabsorption and gastrointestinal involvement. To predict which SSc patients exhibit lactose malabsorption. METHODS: Seventy-seven consecutive Caucasian patients with SSc and 20 control subjects underwent lactose breath test...
November 2016: Alimentary Pharmacology & Therapeutics
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