Abstract: Agents potentiating nerve growth factor activity are provided for treating Alzheimer's disease which contain as the active ingredient dodecatrienoic acid derivatives represented by the general formula (I): wherein X represents hydrogen, CHO, COOH, COOR (wherein R represents an ester residue or an addition salt comprising an alkali metal salt or an organic acid salt group), provided that in case where X is COOH, it is bonded to the carbon atom at the position marked with * so as to form a lactam O?C—O—.

Abstract: Agents potentiating nerve growth factor activity are provided for treating Alzheimer's disease which contain as the active ingredient dodecatrienoic acid derivatives represented by the general formula (I): 1

Abstract: A sustainedly releasing agent for medicines comprising a non-crosslinked type anion-exchange resin represented by the general formula (I): wherein R1 represents aralkyl or alkyl, each of R2 and R3 represents lower alkyl, R4 represents a hydrogen atom or lower alkyl, X− represents a physiologically acceptable counter ion, n represents 1-3, and p represents a mean degree of polymerization, respectively, as well as a sustainedly released medicinal composition comprising the sustainedly releasing agent and a hypolipidemic agent.

Abstract: An antibacterial agent or bactericide, comprising a 2-aminothiazole derivative represented by the following formula (I) and a salt thereof: ##STR1## wherein R.sup.1 and R.sup.2 each represent a hydrogen atom; a halogen atom; a lower alkyl, lower cycloalkyl, substituted or unsubstituted phenyl, thiophene, benzoyl, benzoylmethyl, benzyl or substituted benzyl or p-pivaloyloxyphenyl group; --COOR wherein R.sub.3 is a hydrogen atom, a lower alkyl group; and --CH.sub.2 COOR.sub.4 wherein R.sub.4 is a hydrogen atom or a lower alkyl, benzyl or substituted benzyl group; and A.sup.1 and A.sup.2 each represent a hydrogen atom; a lower alkanesulfonyl, halo lower alkanesulfonyl, phenyl or substituted phenyl, substituted benzoyl, substituted benzyl, substituted or unsubstituted benzenesulfonyl, substituted or unsubstituted lower alkanoyl or amidino group; --CO--R.sub.5 wherein R.sub.5 is a lower alkyl, phenyl or substituted phenyl group, --(CH.sub.2).sub.m --COOH wherein m is an integer of 1 to 5, or --(CH.sub.2).sub.