Sökning: "intestinal absorption of macromolecules"
Visar resultat 1 - 5 av 6 avhandlingar innehållade orden intestinal absorption of macromolecules.
1. Intestinal permeability : a parameter of mucosal dysfunction
Sammanfattning : The gastrointestinal tract has two opposing functions; to absorb nutrients and electrolytes, and to act as a barrier towards hazardous and non-nutritional substances. In the present thesis the barrier function of the gastrointestinal tract was studied in animal models in vivo, in situ and in vitro. LÄS MER
2. Oral delivery of macromolecules formulated with permeation enhancers
Sammanfattning : Therapeutic macromolecules including peptides, proteins, and nucleotide-based ones (such as antisense oligonucleotides and RNAs) have great potential as drug candidates. One drawback is that they typically need to be administered parenterally via subcutaneous, intramuscular or intravenous injections. LÄS MER
3. Epithelial barrier dysfunction in ileal Crohn's disease
Sammanfattning : The study aimed at investigating the intestinal barrier in Crohn's disease, with special reference to epithelial responses to luminal stimuli, and to permeation of proteins.Ileal mucosa from patients undergoing intestinal resection was studied in vitro in Ussing chambers. LÄS MER
4. Membrane transport and the human small intestine : Relation to mucosal protection, intestinal anaphylaxis and nitric oxide
Sammanfattning : The tightly adherent monolayer of epithelial cells that line the luminal side of the intestine provides a dynamic and highly regulated barrier to the passive and active transport of ions, water and macromolecules. Cathecol-O-methyl transferase inhibition prevents tissue degradation of catecholaminesincluding dopamine and intracellular carbonic anhydrase activity is an important regulator of ion and water transport in the small intestine. LÄS MER
5. Intestinal barrier function in health and disease
Sammanfattning : The intestinal epithelium has the dual function of absorbing nutrients and water as well as being a barrier to potentially harmful substances such as macromolecules and bacteria. In the present thesis the barrier function of the intestinal mucosa was studied in vitro in Ussing diffusion chambers. LÄS MER