Anti-inflammatory mechanism of alminoprofen: action on the phospholipid metabolism pathway.

Alminoprofen is a nonsteroidal anti-inflammatory drug (NSAID) of the phenylpropionic acid class. It has anti-inflammatory properties different from the classical NSAID. Using both in vitro systems of cells in culture and in vivo models of inflammation, we report here that alminoprofen possesses both antiphospholipase A2 (PLA2) activity and anti-cycloxygenase (COX) activity. The PLA2 targeted by alminoprofen is likely the secretory phospholipase A2 (sPLA2) while the COX targeted is the COX-2.

[Anti-inflammatory effect of aluminum or aurin tricarboxylic acid]. / Mise en évidence de l'action anti-inflmmatoire de l'aluminon ou acide aurine tricarboxylique.

The anti-inflammatory effect of aurin tricarboxylic acid is studied in rats after parenteral injection of 20 and 50 mg/kg. Aurin tricarboxylic acid reduces: the carrageenan-induced oedemas in paws, the carragenan-induced pleural effusion, the carragen-induced granulation tissue growth and the Freund adjuvant-induced arthritis. As non steroïdal antiinflammatory drugs, the aurin tricarboxylic acid inhibits (ED50 = 0.34.10-2 M) the human erythrocyte delta aminolevulinic acid dehydratase, a zinc dependent enzyme. A possible interaction between zinc-enzymes and non steroïdal antiinflammatory compounds is suggested.

Pharmacological properties of 2-(2-chloro-p-toluidino)-2-imidazoline-nitrate (tolonidine), a new antihypertensive agent. II. Action on cardiac contraction, circulatory parameters, autonomic receptors and diuresis.

Tolonidine, 2(2-chloro-p-toluidino)-2-imidazoline-nitrate, is a substance chemically related to clonidine. In the anesthetized dog, tolonidine administered i.v. decreased the amplitude of ventricular contractions, reduced aortic blood flow and increased peripheral vascular resistances. In the bivagotomized pithed rat, tolonidine induced a long-lasting increase in blood pressure with no secondary hypotension, thus suggesting peripheral sympathomimetic properties, however, contractions of seminal vesicles in vitro were not obtained. The product proved to have no peripheral sympatholytic or parasympatholytic properties. In the dog and the rat, diuresis was hardly changed. These properties are closely related to those of clonidine, which was studied comparatively. A general discussion is proposed at the end of a third article.