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Composition and biological activities of the aqueous extracts of three scleractinian corals from the Mexican Caribbean: Pseudodiploria strigosa, Porites astreoides and Siderastrea siderea J. Venom. Anim. Toxins incl. Trop. Dis.
García-Arredondo,Alejandro; Rojas-Molina,Alejandra; Ibarra-Alvarado,César; Lazcano-Pérez,Fernando; Arreguín-Espinosa,Roberto; Sánchez-Rodríguez,Judith.
Abstract Background: Scleractinian corals (stony corals) are the most abundant reef-forming cnidarians found in coral reefs throughout the world. Despite their abundance and ecological importance, information about the diversity of their toxins and their biological activities is very scarce. In this study, the chemical composition and the biological activities of the aqueous extracts of Pseudodiploria strigosa, Porites astreoides and Siderastrea siderea, three scleractinian corals from the Mexican Caribbean, have been assessed for the first time. Methods: Toxicity of the extracts was assessed in crickets; the presence of cytolysins was detected by the hemolysis assay; the vasoconstrictor activity was determined by the isolated rat aortic ring assay; the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scleractinia; Pseudodiploria strigosa; Porites astreoides; Siderastrea siderea; Toxicity; Hemolysis; Vasoconstriction; Nociceptive response.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992016000100323
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Diurnal variation of vascular diameter and reactivity in healthy young men BJMBR
Bau,P.F.D.; Bau,C.H.D.; Naujorks,A.A.; Rosito,G.A.; Fuchs,F.D..
The higher incidence of cardiovascular events in the morning is accompanied by an increased vascular tone. However, there are few published studies designed to evaluate the diurnal variation of vascular and endothelial parameters in healthy subjects. In the present investigation, we evaluated the diurnal variation in brachial artery diameter (BAD), flow-mediated dilation (FMD) and endothelium-independent dilation (NFMD) in a homogeneous sample of healthy non-smoker young men. Fifty subjects aged 20.8 ± 0.3 years (range: 18 to 25 years) were investigated by brachial artery ultrasound. Exclusion criteria were female gender and evidence of clinically significant health problems, including obesity. Volunteers were asked to rest and avoid fat meals as well as...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cardiovascular risk factor; Circadian rhythm; Brachial artery; Vasoconstriction; Vascular biology.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000600011
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