María del Carmen Ríos de Molina

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The phylogenetic relationships of 16 species of Parmelia s. str. are presented based on sequences of nuITS rDNA from 56 specimens, and -tubulin gene sequences from 29 collections. Parmelia serrana sp. nov. a Mediterranean species morphologically very close to P. saxatilis is described. Parmelia ernstiae is the sister-group to P. saxatilis s. str., and a(More)
Lectins from the lichen Xanthoria parietina develop arginase activity. One of these lectins behaves as a secreted arginase whereas another is an endocellular enzyme. Both enzymes are glycosylated proteins differing in the occurrence of galactose instead of N-acetyl-D-glucosamine in secreted arginase. The affinity for the algal ligand (glycosylated cell wall(More)
BACKGROUND The use of regulatory or immature dendritic cells (DCs) as tools for modulating experimental rheumatoid arthritis is very recent. Tumour necrosis factor (TNF)-stimulated DCs have been shown to restore tolerance in experimental autoimmune encephalomyelitis and collagen-induced arthritis (CIA). OBJECTIVE We investigated the capacity of short-term(More)
The species delimitation in fungi is currently in flux. A growing body of evidence shows that the morphology-based species circumscription underestimates the number of existing species. The large and ever growing number of DNA sequence data of fungi makes it possible to use these to identify potential cases of hidden species, which then need to be studied(More)
Parmelioid lichens are a diverse and ubiquitous group of foliose lichens. Generic delimitation in parmelioid lichens has been in a state of flux since the late 1960s with the segregation of the large, heterogeneous genus Parmelia into numerous smaller genera. Recent molecular phylogenetic studies have demonstrated that some of these new genera were(More)
Parmelia barrenoae is described as new to science in the P. sulcata complex on the basis of morphological and molecular data. The new species is superficially similar to P. sulcata but differs in having simple rhizines whereas the other species of the complex have squarrose rhizines. Nuclear ITS rDNA and partial -tubulin gene sequences have been used as(More)
Because the number of fungal species (mycobionts) exceeds the number of algae and cyanobacteria (photobionts) found in lichens by more than two orders of magnitude, reciprocal one-to-one specificity between one fungal species and one photobiont across their entire distribution is not expected in this symbiotic system, and has not previously been observed.(More)
The high resistance of Trypanosoma cruzi trypomastigotes, the causal agent of Chagas' disease, to complement involves several parasite strategies. In these in vitro studies, we show that T. cruzi calreticulin (TcCRT) and two subfragments thereof (TcCRT S and TcCRT R domains) bind specifically to recognition subcomponents of the classical and lectin(More)
The aim of this work was to study the effect of anti-TNF treatment on CD4+ Th1, Th17 and regulatory T cells (Tregs), together with CD8+ T cells and NK cells from rheumatoid arthritis (RA) patients. For this purpose, 18 RA patients received adalimumab during 16weeks and their peripheral blood lymphocytes were assessed by flow cytometry at the beginning and(More)
Ana CRESPO*, M. Carmen MOLINA, Oscar BLANCO, Burkhard SCHROETER, Leopoldo G. SANCHO and David L. HAWKSWORTH "Departamento de BiologıUa Vegetal II, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain. #Departamento de Ciencias Experimentales e IngenierıUa, Escuela Superior de Ciencias Experimentales y TecnologıUa, Universidad Rey Juan Carlos,(More)