Plaque disruption with superimposed thrombosis is considered to be responsible for precipitating acute coronary syndrome. We identified sn-1-alkyl- and sn-1-acyl-type glycerophosphocholine (GroPCho) core aldehydes from human atheromas and demonstrated their activities on platelets and arteries. The naturally occurring core aldehydes were identified and quantified in relation to synthetic standa...

Cellular damage and inflammatory processes cause activation of phospholipase A in plasma membranes resulting in the production of various lysophospholipids. Treatment of mice with L-alpha-lysophosphatidylcholine, a decomposition product of phosphatidylcholine, greatly stimulates mouse peritoneal macrophages to ingest target cells via the Fc receptors. Similarly, treatment of mice with L-alpha-l...

Novel two-dimensional C3 symmetric (tripod) structures are fabricated from isobutenyl compounds possessing long alkyl chains. Alteration from tripod to wavy structures is accomplished by odd-even effect, and tandem Claisen rearrangement allows the transformation to the linear structures.

The title compound, C(20)H(26)O(4), crystallizes such that the alkyl chain adopts an all-anti conformation. The crystal packing displays edge-to-face arene-arene inter-actions with a dihedral angle of 87°. The complete molecule is generated by inversion symmetry.

High pressure limits of thermal rate constants of intramolecular hydrogen migrations, particularly 1,3 to 1,6 H-shift in propyl, butyl, pentyl and hexyl radicals, respectively, were calculated using the canonical variational transition state theory (CVT) with a multi-dimensional small-curvature tunneling (SCT) correction over the temperature range of 300-3000 K. The CCSD(T)/cc-pVDZ//BH&HLYP/cc-...

A series of isobutenyl compounds possessing various alkyl chain lengths (C(n)-1) with a carbon number of n = 14-21 were synthesized and their two-dimensional (2D) structures were systematically studied using scanning tunnelling microscopy (STM) at a highly oriented pyrolytic graphite (HOPG)/solvent interface. Two kinds of solvent, such as 1-phenyloctane (PO) and 1-phenylnonane (PN), were select...

The simple octyl β-D-galactofuranoside was previously described as a good bacteriostatic agent against Mycobacterium smegmatis, a non-pathogenic model of M. tuberculosis. In order to decipher its mechanism of action, STD NMR on whole M. smegmatis cells was implemented. It outlined the crucial role of the alkyl chain and the possibility of modulation on the furanosyl entity. Then, 16 new alkyl f...

The pink portion of the rabbit harderian gland was found to be a rich source of ATP: I-alkyl-sn-glycerol phosphotransferase. The enzyme, associated with the microsomal fraction of the gland, exhibits a pH optimum of ‘7.1. ATP and Mg2f are absolute requirements for enzymatic activity; the apparent K,,, for Mg2+ATP is 1.6 mM. Manganese partially substituted for Mgz+, but the measured rate in the ...

The metabolic dealkylation of nine nitrosodialkylamines, including five symmetrical (nitrosodimethylamine, nitrosodiethylamine, nitrosodipropylamine, nitrosodibutylamine and nitrosodiamylamine) and four asymmetrical nitrosodialkylamines (nitrosomethylethylamine, nitrosomethylpropylamine, nitrosomethylbutylamine and nitrosomethylamylamine), was investigated in 14 samples of human liver microsome...

A strategic selection of tree species will shift the type and quality of litter input, and subsequently magnitude and composition of the soil organic carbon (SOC) through soil microbial community. We conducted a manipulative experiment in randomized block design with leaf litter inputs of four native subtropical tree species in a Pinus massoniana plantation in southern China and found that the ...