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The hydrophilicity and lipophilicity of azelaic acid (AA) were modified to diethyl azelate (DA) which was synthesized by Fisher esterification reaction and identified by IR, MS and 1 H NMR and to azelaic acid-β-cyclodextrin complex (AACD) which was prepared by inclusion complexation and...
One main barrier for the peroral administration of therapeutic peptides and proteins is the enzymatic barrier, that is mediated by luminally secreted and membrane bound proteolytic enzymes. It was the aim of the study to synthesise, characterise and evaluate a novel polymer–inhibitor conjugate...
It has been shown that vasoconstrictive drugs such as ephedrine derivatives are able to decrease systemic absorption of drugs administered by mucosal surfaces. The present paper set out to evaluate in the rat model the effect of co-administered nasal ephedrine on the absorption of GR138950 in a...
Purpose : Type I diabetes results from β-cell death and dysfunction, induced by infiltration of immune cells and local production of inflammatory cytokines. Therefore, we investigated the effect of iNOS and NF-κB gene silencing on β-cell survival and function. Methods : Rat insulinoma INS-1E...
Microparticles-adsorbed insulin and zinc insulin (Penfil®N) were molded to self-dissolving micropiles (SDMPs) with chondroitin sulfate as the base for the percutaneous administration of insulin. Porous silicon dioxide (Sylysia® 320, 440 and 730) and porous calcium silicate (Florite®RE) were...
Specific delivery of therapeutic agents to tumor sites remains a problem and requires a nontoxic carrier able to bind a specific tumor cell marker. Although antibodies have been utilized as protein carriers for different types of drugs, they have not been employed for delivery of antisense...
Gene therapies to produce insulin in diabetic patients have been considered for several years. Genetic engineering of ectopic insulin production and secretion in autologous non-beta-cells has been tested in different tissues. Recently, gut K-cells have been shown to express glucokinase, the...
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