Search results for "In vivo absorption"

showing 3 items of 3 documents

Evidence of Absorptive Function in vivo in a Neo-Formed Bio-Artificial Intestinal Segment Using a Rodent Model.

2015

A promising therapeutic approach for intestinal failure consists in elongating the intestine with a bio-engineered segment of neo-formed autologous intestine. Using an acellular biologic scaffold (ABS), we, and others, have previously developed an autologous bio-artificial intestinal segment (BIS) that is morphologically similar to normal bowel in rodents. This neo-formed BIS is constructed with the intervention of naïve stem cells that repopulate the scaffold in vivo, and over a period of time, are transformed in different cell populations typical of normal intestinal mucosa. However, no studies are available to demonstrate that such BIS possesses functional absorptive characteristics nece…

0301 basic medicineMalePathologymedicine.medical_specialtyCell typeLumen (anatomy)Bio-artificial intestineBio-engineered intestineIntestinal absorption03 medical and health sciences0302 clinical medicineIntestinal mucosaIn vivoIntestine SmallmedicineAnimalsIntestinal MucosabiologyBioartificial OrgansTissue EngineeringTissue ScaffoldsIn vivo absorptionGastroenterologyCystic fibrosis transmembrane conductance regulatorRatsFunctional analysis of bio-artificial intestine030104 developmental biologyIntestinal Absorptionbiology.proteinUltrastructure030211 gastroenterology & hepatologySurgeryStem cellJournal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract
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Calcium bioavailability in human milk, cow milk and infant formulas—comparison between dialysis and solubility methods

1999

Abstract The percentages of total, soluble and dialysable calcium of human milk, cow milk and milk and soy based infant formulas were determined in order to detect possible differences in the calcium bioavailability of the samples. For this purpose an in vitro method was applied to these four calcium sources. The ranking of the analysed samples in terms of calcium bioavailability depends on the criteria applied. Calcium ranked dialysis percentage was: cow milk>human milk>soy based formula>milk based formulas. Calcium ranked solubility percentage was: human milk>cow milk>soy-based formula>milk-based formulas. Comparison of the results of the in vitro assay with the information available on i…

Calcium metabolismChemistryfood and beveragesIn vivo absorptionchemistry.chemical_elementGeneral MedicineCalciumAnalytical ChemistryBioavailabilityCow milkfluids and secretionsInfant formulaFood scienceSolubilityDialysis (biochemistry)Food ScienceFood Chemistry
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Optimization of the Ussing chamber setup with excised rat intestinal segments for dissolution/permeation experiments of poorly soluble drugs.

2016

AbstractContext: Prediction of the in vivo absorption of poorly soluble drugs may require simultaneous dissolution/permeation experiments. In vivo predictive media have been modified for permeation experiments with Caco-2 cells, but not for excised rat intestinal segments.Objective: The present study aimed at improving the setup of dissolution/permeation experiments with excised rat intestinal segments by assessing suitable donor and receiver media.Methods: The regional compatibility of rat intestine in Ussing chambers with modified Fasted and Fed State Simulated Intestinal Fluids (Fa/FeSSIFmod) as donor media was evaluated via several parameters that reflect the viability of the excised in…

Cell Membrane PermeabilityPharmaceutical Science02 engineering and technology030226 pharmacology & pharmacyBile Acids and Salts03 medical and health sciences0302 clinical medicineIn vivoDrug DiscoveryAnimalsHumansDissolutionPharmacologyRat intestineChromatographyUssing chamberChemistryOrganic ChemistryIn vivo absorptionPermeation021001 nanoscience & nanotechnologyRatsIntestinesJejunumSolubilityCaco-2 Cells0210 nano-technologyFederal stateDrug development and industrial pharmacy
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