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Pharmacological and biochemical actions of simple coumarins: natural products with therapeutic potential.
Simple coumarins possessing ortho-dihydroxy functions, such as fraxetin and 4-methyldaphnetin, are potent inhibitors (low micromolar) of lipid peroxidation and scavengers of superoxide anion radicals and of aqueous alkylperoxyl radicals, but may be pro-oxidant (enhancing generation of hydroxyl radicals) in the presence of free iron ions.
Interactions of a series of coumarins with reactive oxygen species. Scavenging of superoxide, hypochlorous acid and hydroxyl radicals.
Several compounds, notably 5,7-dihydroxy-4-methylcoumarin, possess beneficial biochemical profiles of interest in relation to pathophysiological processes dependent upon reactive oxygen species.
A review of natural products and plants as potential antidiabetic drugs.
The present paper reviews the active, natural principles and crude extracts of plants which have been experimentally studied for hypoglycemic activity in the last ten years. Phytoconstituents with…
Co-regulation between cyclo-oxygenase-2 and inducible nitric oxide synthase expression in the time-course of murine inflammation
- I. Posadas, M. Terencio, +4 authors M. Alcaraz
- Chemistry, MedicineNaunyn-Schmiedeberg's Archives of Pharmacology
The results indicate that PGE2 and NO may play in vivo mutual modulatory roles in the inflammatory response caused by zymosan injection into the mouse air pouch, a suitable model to study drugs acting on those pathways.
Synthesis and pharmacological evaluation of a selected library of new potential anti-inflammatory agents bearing the gamma-hydroxybutenolide scaffold: a new class of inhibitors of prostanoid…
- María D Guerrero, M. Aquino, +4 authors L. Gomez‐Paloma
- Medicine, ChemistryJournal of medicinal chemistry
- 4 April 2007
A promising inhibitor of prostanoid production acting by in vitro and in vivo selective modulation of microsomal prostaglandin E synthase 1 expression is discovered.
Anti-inflammatory and analgesic activity of a novel inhibitor of microsomal prostaglandin E synthase-1 expression.
- María D Guerrero, M. Aquino, I. Bruno, R. Riccio, M. Terencio, M. Payá
- Chemistry, MedicineEuropean journal of pharmacology
- 12 October 2009
The data suggest that inhibition of mPGES-1 protein expression in acute and chronic inflammatory models by BTH, could provide a potential therapeutic target and a pharmacological tool to discern the role of the inducible enzymes COX-2 and mPGes-1 in inflammatory pathologies.
Type-IIA secreted phospholipase A2 is an endogenous antibiotic-like protein of the host.
It is concluded that sPLA(2)-IIA is an efficient endogenous antibiotic of the host and can play a role in host defense against pathogenic bacteria.
High Bactericidal Efficiency of Type IIA Phospholipase A2 against Bacillus anthracis and Inhibition of Its Secretion by the Lethal Toxin1
- A. -. Gimenez, Yongzheng Wu, M. Payá, C. Delclaux, L. Touqui, P. Goossens
- Biology, MedicineThe Journal of Immunology
- 1 July 2004
The results suggest that sPLA2-IIA may play a role in innate host defense against B. anthracis infection and that lethal toxin may help the bacteria to escape from the bactericidal action of sPLA1-I IA by inhibiting the production of this enzyme.
Pharmaco-Toxicological Study of Kageneckia oblonga, Rosaceae
- C. Delporte, O. Muñozb, +7 authors N. Backhouse
- Chemistry, MedicineZeitschrift fur Naturforschung. C, Journal of…
- 1 February 2002
In-vitro assays showed that both cucurbitacins can be partly responsible for the analgesic, antipyretic, and anti-inflammatory activities of Kageneckia oblonga, Rosaceae, and it is highly probable that this extract contain one or more cytotoxic compounds that could be investigated for their potential use as an agent against cancer.
Structure-activity relationships of polymethoxyflavones and other flavonoids as inhibitors of non-enzymic lipid peroxidation.
It was observed that the structural features for active polyhydroxylated compounds were different from those of polymethoxylated flavones, antiperoxidative flavonoids possessing a high lipophilicity.