Abstract:
The present invention aims to provide a method and an apparatus for producing a lyophilized body, each of which can achieve energy saving, low cost, and a reduction in processing time and can provide a lyophilized body less damaged by a freezing process and a drying process. The present invention relates to a method for lyophilizing a substance using an electromagnetic wave, and the lyophilization method includes freezing the substance under irradiation of at least an electromagnetic wave and reduced-pressure drying the frozen substance under irradiation of at least an electromagnetic wave.
Abstract:
The present invention addresses the problem of providing lipid nanoparticles which function as gene transfer carriers capable of selective transfer to the liver or spleen. Lipid nanoparticles which contain a pH-sensitive cationic lipid represented by formula (I) [a represents an integer of 3-5; b represents 0 or 1; R1 and R2 each independently represent a group represented by general formula (A) (R11 and R12 each independently represent a linear or branched C2-15 alkyl group; c represents 0 or 1; v represents an integer of 4-12); and X represents a group represented by general formula (B)(d represents an integer of 0-3; and R3 and R4 each independently represent a C1-4 alkyl group or C2-4 alkenyl group, while R3 and R4 may form a 5- to 7-membered non-aromatic heterocycle) or represents a 5- to 7-membered non-aromatic heterocyclic group]. (I) (R1)(R2)C(OH)—(CH2)a—(O—CO)b—X. (A): (R11)(R12)—CH—(CO—O)c—(CH2)v-. (B):—(CH2)d-N(R3)(R4).
Abstract:
The present invention relates to a composition for enhancing transdermal absorption of a drug, containing a polyvalent alcohol having 3 to 8 carbon atoms, an organic acid having 2 to 20 carbon atoms, and a higher alcohol having 12 to 20 carbon atoms, and a patch preparation containing a support and a drug-containing adhesive layer containing the composition on one surface of the support.
Abstract:
The invention provides a method of manufacturing a patch preparation comprising (a) pouring a composition for forming an adhesive layer into a container having a concave part with a shape corresponding to a patch preparation to be manufactured, wherein the composition contains a drug, an adhesive polymer, and an organic solvent; (b) removing the organic solvent from the composition through drying to form a drug-containing adhesive layer in the concave part; and (c) laminating a support on the drug-containing adhesive layer to provide the patch preparation comprising a support and the drug-containing adhesive layer formed on one surface of the support.