Self-emulsifying peptide drug delivery systems: How to make them highly mucus permeating. 2018

Janine Griesser, and Gergely Hetényi, and Hatice Kadas, and Frédéric Demarne, and Vincent Jannin, and Andreas Bernkop-Schnürch
Thiomatrix Forschungs-und Beratungs GmbH, Trientlgasse 65, Innsbruck, Austria.

OBJECTIVE It was the aim of this study to evaluate the mucus permeating properties of self-emulsifying drug delivery systems (SEDDS) exhibiting different size and zeta potential. METHODS Various SEDDS were prepared and characterized regarding droplet size, zeta potential and stability. Desmopressin was incorporated as model peptide drug and log P (SEDDS/water) was determined. Thereafter, mucus permeation studies with freshly isolated porcine mucus via Transwell method were performed. Moreover, the impact of water movement on mucus permeation of SEDDS was investigated. Different types of nanocarriers including nanoparticles and liposomes served as references. RESULTS SEDDS exhibited an initial droplet size of 25.0 ± 2.2, 49.5 ± 4.6, 123.5 ± 12.1, 226.2 ± 93.4 and 502.9 ± 93.7 nm and a zeta potential of +24.4 ± 4.6, +10.6 ± 2.0, 0.2 ± 3.8, -8.2 ± 3.4 and -35.1 ± 2.7 mV. Log P was in the range of 1.29-2.09 and mucus permeation studies with these SEDDS revealed a clear correlation between droplet size and permeation rate. The smaller SEDDS were, the higher their mucus permeating properties were. Negatively charged SEDDS demonstrated a higher permeation rate than positively charged SEDDS. In comparison to liposomes and solid nanocarriers SEDDS exhibited up to 5-fold higher mucus permeating properties. CONCLUSIONS Small droplet size and negative zeta potential of SEDDS could be identified as key parameters for their mucus permeating properties.

UI MeSH Term Description Entries
D007413 Intestinal Mucosa Lining of the INTESTINES, consisting of an inner EPITHELIUM, a middle LAMINA PROPRIA, and an outer MUSCULARIS MUCOSAE. In the SMALL INTESTINE, the mucosa is characterized by a series of folds and abundance of absorptive cells (ENTEROCYTES) with MICROVILLI. Intestinal Epithelium,Intestinal Glands,Epithelium, Intestinal,Gland, Intestinal,Glands, Intestinal,Intestinal Gland,Mucosa, Intestinal
D008081 Liposomes Artificial, single or multilaminar vesicles (made from lecithins or other lipids) that are used for the delivery of a variety of biological molecules or molecular complexes to cells, for example, drug delivery and gene transfer. They are also used to study membranes and membrane proteins. Niosomes,Transferosomes,Ultradeformable Liposomes,Liposomes, Ultra-deformable,Liposome,Liposome, Ultra-deformable,Liposome, Ultradeformable,Liposomes, Ultra deformable,Liposomes, Ultradeformable,Niosome,Transferosome,Ultra-deformable Liposome,Ultra-deformable Liposomes,Ultradeformable Liposome
D010316 Particle Size Relating to the size of solids. Particle Sizes,Size, Particle,Sizes, Particle
D010455 Peptides Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are considered to be larger versions of peptides that can form into complex structures such as ENZYMES and RECEPTORS. Peptide,Polypeptide,Polypeptides
D010539 Permeability Property of membranes and other structures to permit passage of light, heat, gases, liquids, metabolites, and mineral ions. Permeabilities
D002626 Chemistry, Pharmaceutical Chemistry dealing with the composition and preparation of agents having PHARMACOLOGIC ACTIONS or diagnostic use. Medicinal Chemistry,Chemistry, Pharmaceutic,Pharmaceutic Chemistry,Pharmaceutical Chemistry,Chemistry, Medicinal
D003894 Deamino Arginine Vasopressin A synthetic analog of the pituitary hormone, ARGININE VASOPRESSIN. Its action is mediated by the VASOPRESSIN receptor V2. It has prolonged antidiuretic activity, but little pressor effects. It also modulates levels of circulating FACTOR VIII and VON WILLEBRAND FACTOR. Desmopressin,Vasopressin, Deamino Arginine,1-Deamino-8-D-arginine Vasopressin,1-Desamino-8-arginine Vasopressin,Adiuretin,Adiuretin SD,Apo-Desmopressin,DDAVP,Desmogalen,Desmopressin Acetate,Desmopressin Monoacetate,Desmopressin Monoacetate, Trihydrate,Desmopressine Ferring,Desmospray,Desmotabs,Minirin,Minurin,Nocutil,Octim,Octostim,Acetate, Desmopressin,Arginine Vasopressin, Deamino,Ferring, Desmopressine,Monoacetate, Desmopressin,Monoacetate, Trihydrate Desmopressin,Trihydrate Desmopressin Monoacetate,Vasopressin, 1-Deamino-8-D-arginine,Vasopressin, 1-Desamino-8-arginine
D004655 Emulsions Colloids formed by the combination of two immiscible liquids such as oil and water. Lipid-in-water emulsions are usually liquid, like milk or lotion. Water-in-lipid emulsions tend to be creams. The formation of emulsions may be aided by amphiphatic molecules that surround one component of the system to form MICELLES. Emulsion
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013552 Swine Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA). Phacochoerus,Pigs,Suidae,Warthogs,Wart Hogs,Hog, Wart,Hogs, Wart,Wart Hog

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