[EN] COMPOUNDS AND METHODS FOR THE TREATMENT OF DUCHENNE MUSCULAR DYSTROPHY [FR] COMPOSÉS ET PROCÉDÉS POUR LE TRAITEMENT DE LA DYSTROPHIE MUSCULAIRE DE DUCHENNE
Synthesis of Lipoamino Acids and Their Activity against Cerebral Ischemic Injury
作者:Li-Yun Yao、Qi Lin、Yin-Yao Niu、Ke-Min Deng、Jian-Hua Zhang、Yang Lu
DOI:10.3390/molecules14104051
日期:——
A series of lipoamino acids were synthesized and their neuroprotective effect against brain ischemia induced by oxygen-glucose deprivation (OGD) on rat cerebral slices was evaluated. Among these compounds, N-stearoyl-L-tyrosine (4), N-stearoyl-L-serine (5) and N-stearoyl-L-threonine (6) exhibited good neuroprotective activity. We found that the neuroprotective activity of lipoamino acids depended on the acyl group, the presence of a free carboxylic function and a free hydroxyl group at the branched chain of the amino acids. The results also showed that 5 was the most active compound, protecting rat brain slices against OGD as well as hydrogen peroxide (H2O2) insult at the range of 1–10 M.
Micro-nano materials, products obtained by covalently modifying the surfaces of micro/nano materials with hydrophilic materials, and methods for making the same. The micro/nano materials on the surfaces have carboxyl groups or/and pro-carboxyl groups which are converted into their active esters. The products are covalently modified by forming amide bonds between the active esters on the surfaces and the modification agents; where the modification agents are hydrophilic compounds and/or hydrophilic polymers bearing primary and/or secondary aliphatic amines. Monomers bearing carboxyl groups and/or pro-carboxyl groups are used to produce an adequate number of carboxyl groups and/or pro-carboxyl groups on the surface of a polymer material to be modified. The carboxyl groups and/or pro-carboxyl groups are converted into active esters. A reasonably-sized modification agent bearing primary and/or secondary amines, zwitterions and hydrophilic linear spacer arms is used to form amide bonds and obtain a covalently modified surface layer.
There is disclosed a formulation comprising a base component in combination with one or more organic component chosen from N-mono- and N,N-di-acylated basic amino acids, wherein the acyl group in the N-mono-acylated basic amino acid is an aliphatic acyl group having from 8 to 22 carbon atoms, and each of the acyl groups, which may be the same or different, in the N,N-di-acylated basic amino acid is an aliphatic acyl group having from 1 to 22 carbon atoms with the proviso that the two aliphatic acyl groups together have from 9 to 44 carbon atoms.
The formulation is useful in novel cosmetics and as a novel surface-modified inorganic filler.
Die Erfindung betrifft pharmazeutische Zusammensetzungen enthaltend synthetisches, im wesentlichen reines Phosphatidylserin und Phosphatidylcholin und einen Stoff oder ein Stoffgemisch mit biologischer Wirkung. Ebenfalls Gegenstand der Erfindung sind die Mischungen bestehend aus synthetischem, im wesentlichen reinen Phosphatidytserin und Phosphatidylcholin, sowie Herstellungsverfahren der pharmazeutischen Zusammensetzungen und deren Verwendung.