decanoylcarnitine has been researched along with Inflammatory-Bowel-Diseases* in 2 studies
1 review(s) available for decanoylcarnitine and Inflammatory-Bowel-Diseases
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Mechanistic analysis for drug permeation through intestinal membrane.
For drug absorption, intestinal drug permeability's through both the paracellular and transcellular routes were analyzed. Absorption enhancers, such as sodium caprate (C10), decanoylcarnitine (DC) and tartaric acid (TA), increased the paracellular permeability of water-soluble, low lipophilic and poorly absorbable drugs by enlargement of tight junction (TJ) adhering to the intercellular portion; that is, expansion of the paracellular routes. C10 increased the intracellular calcium level to induce contraction of calmodulin-dependent actin filaments. Although DC also increased the intracellular calcium level, the action was independent of calmodulin, and thus the action mechanism of DC was considered to differ from that of C10. DC and TA decreased the intracellular ATP level and the intracellular pH, suggesting that intracellular acidosis increases the calcium level through decrease in ATP level followed by opening TJ. TA had no effect on Western blot analysis, but TA significantly inhibited excretion of rhodamine 123, one of the P-glycoprotein (P-gp) substrates, from the serosal to mucosal side, suggesting that TA increases the intestinal absorption of P-gp substrates, possibly by inhibiting the P-gp function without changing the expression of P-gp. During ischemia/reperfusion (I/R) injury during small intestine grafting, TJ opening and decrease in P-gp function simultaneously occurred. The in vitro model of I/R showed that lipid peroxidation is a trigger of the injury, and superoxide and iron ion participate in TJ opening and decrease in P-gp function. Colonic epithelial cells have the specific transcellular transport systems for lipopolysaccharide (LPS), one of which shows substrate specificity in the interaction with CD14 and/or that of TLR4. In the infective disease induced by LPS, the mucosal LPS sensitive transport capability was decreased and in the secretory direction, the receptor-mediated uptake mechanism disappeared. LPS taken up into the cells can be excreted by P-gp or mrp. The expression levels and function of the secretory transporters were considered to be increased in the infective condition. In conclusion, changes in TJ as the membrane structure and P-gp as the membrane function are important factors controlling intestinal membrane transport. Topics: Animals; ATP Binding Cassette Transporter, Subfamily B, Member 1; Bacterial Infections; Caco-2 Cells; Carnitine; Cell Membrane Permeability; Decanoic Acids; Drug Evaluation, Preclinical; Humans; Inflammatory Bowel Diseases; Intestinal Absorption; Intestinal Diseases; Intestinal Mucosa; Intestines; Lipid Peroxidation; Lipopolysaccharides; Pharmaceutical Preparations; Reperfusion Injury; Tartrates; Tight Junctions | 2007 |
1 other study(ies) available for decanoylcarnitine and Inflammatory-Bowel-Diseases
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Cardiac involvement in inflammatory bowel disease: role of acylcarnitine esters.
Cardiovascular complications have been frequently described in Inflammatory Bowel Disease (IBD). Both Crohn disease and Ulcerative Colitis are characterized by malabsorption of some micronutrients, such as carnitine, which is a very important element for myocardial metabolism, being demonstrated that its deficiency correlates with heart involvement in coeliac disease. Aims of this study are to evaluate cardiac function in IBD patients asymptomatic for cardiovascular diseases and to correlate the cardiac data with the profile of carnitine esters plasma levels.. The study was carried out on 20 IBD patients by comparison with 18 sex- and age-matched clinically healthy controls. Personal and familial history, physical examination, standard electrocardiogram and echocardiogram were performed in all subjects. Complete panel of nutritional status parameters and serum levels of free carnitine and its esters were evaluated both in IBD patients and control subjects.. Isovaleryl-carnitine, Tiglyl-carnitine, Octenoylcarnitine and Decanoyl-carnitine, were found to be significantly lower in IBD patients. Significant correlations were found between some carnitine esters and echocardiographic parameters although total and free carnitine were meanly more elevated in IBD. No statistically significant differences in echocardiographic parameters were found between IBD patients and control subjects.. Deficiency of some isoforms of carnitine, especially those esterified with short chain fatty acids, may play an important role in cardiac involvement in course of IBD and could lead, over time, to dilated cardiomiopathy. Topics: Adult; Cardiomyopathy, Dilated; Carnitine; Case-Control Studies; Female; Heart Ventricles; Humans; Inflammatory Bowel Diseases; Malabsorption Syndromes; Male; Middle Aged; Myocardium; Ultrasonography; Young Adult | 2011 |