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Cytochemical studies on portuguese carrageenophytes (Gigartinales, Rhodophyta)
Pereira, Leonel; Mesquita, José F.In opposition to the relatively hard cell walls of other algae, those of the majority of red algae are flexible and soft, what is due to the co-existence of great quantities of amorphous material and relatively scarce fibrilar components. The intercellular matrix of carrageenophytes is mainly composed of highly sulphated polygalactans, with D-galactose and anhidro-D-galactose, in contrast with the less sulphate...
Platelet hyperactivation in maintained growth hormone-deficient childhood patie...
Reis, Flávio; Campos, Maria Vitor; Bastos, Margarida; Almeida, Luis; Lourenço, Margarida; Ferrer-Antunes, Carlos A.; Palmeiro, AidaGH deficiency (GHD) is associated with a higher risk of vascular disease, whose pathophysiological mechanisms remains not yet fully elucidated. This study aimed to assess the main cardiovascular risk indexes, plasma catecholamines content, and the platelet function in childhood-onset GHD patients. Some of the main clinical examinations related with cardiovascular risk, plasma catecholamines content, as well as ...
Population studies and carrageenan properties of Chondracanthus teedei var. lus...
Pereira, Leonel; Mesquita, José F.Features of an intertidal population of Chondracanthus teedei var. lusitanicus, which occurs in sandy basins on rocky shores of part of the Portuguese coast (Buarcos, Figueira da Foz), were studied over one year. Biomass and plant size showed a small increase in early spring (April), a marked increase in early summer (June/July) and were at a minimum in late summer. There was generally more tetrasporophytes (4–...
Carrageenophytes of occidental Portuguese coast: 1-spectroscopic analysis in ei...
Pereira, Leonel; Mesquita, José F.Infrared and Raman spectroscopic analysis of the carrageenan (alkaline extraction) in eight species (representing seven genera and four families) of Gigartinales, in different reproductive phases from Buarcos bay (Figueira da Foz, Portugal), were studied. Female gametophytes and non-fertile thalli samples of Chondrus crispus, Mastocarpus stellatus, Chondracanthus teedei var. lusitanicus, Gigartina pistillata an...
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