Cela Esp��n, X. i Revilla Calvo, V., Annexos de Jaume Buxeda i Garrig��s i Miquel ��ngel Cau Ontiveros; Mariana P��rez-Sala i Rod��s; Eva Orri Terrado i Alicia Estrada Mart��n.: La transici�� del municipium d'Iluro a Alarona (Matar��). Cultura material i transformacions d"un espai urb�� entre els segles V i VII dC. Laietania, 15, 2004

Aquest llibre reuneix un estudi arqueol��gic extraordin��riament acurat referit a tot un seguit d'actuacions detectades a partir del registre arqueol��gic, que caracteritzen l'espai urb�� de l'antiga Iluro durant el per��ode de l'Antiguitat tardana. S'hi estudia amb molt deteniment cadascuna de les accions detectades -aix�� com tot el mobiliari cer��mic relacionat- amb la finalitat de situar-les correctament en el temps, per�� tamb�� per entendre, a trav��s de la cultura material, la din��mica que pren la ciutat a les darreries de l'Antiguitat; per a poder intuir, m��s que saber, quina societat es desenvolupa darrere d��aquests contenidors plens de productes alimentaris arribats d��un ultramar lluny�� i alhora molt proper; una societat capa�� de respondre a l��est��mul exterior amb una producci�� pr��pia que competir�� o substituir�� una gran part de la que ve de fora.

Euphorbia L. subsect. Esula (Boiss. in DC.) Pax in the Iberian Peninsula. Leaf surface, chromosome numbers and taxonomic treatment

Presentem l'estudi taxon��mic dels repr��sentants d'Euphorbia subsect. Esula a la Pen��nsula Ib��rica. Pr��viament, s'inclou un primer cap��tol dedicai a l'estudi de les epidermis foliars i un segon cap��tol sobre nombres cromos��mics...

A proposito de los generos Aconitum L. y Consolida (DC.) S.F.Gray en la Peninsula Iberica.

Seguimos para este taxon, en lo nomenclatural, a TAMURA & LAUENER (1979:459), mientras no se tipifique de forma adecuada A. lycoctonum L., considerado nom. ambig. ya por TUTIN (1964:212), con pocas posibilidades de que no sea diverso de A. vulparia. A. pyrenaicum L. es tambi��n algo muy distinto del taxon que nos ocupa y, en caso de no ser aceptada la proposici��n de que se lo considere ��amen rejiciendum, hecha por TAMURA & LAUENER (Le.: 447), seria el nombre correcto para A. barbatum Pers. (=A. squarrosum DC.) de Siberia. Otro nombre que a��n podr��a ser prioritario, A. altissimum Miller (WARNCKE, 1964:30; TAMURA & LAUENER, l.c), no puede usarse en tanto no se localice alg��n material de aquel en que se bas�� la descripci��n un tanto ambigua de Miller....

Senecio pterophorus DC., a new alien species in the European mainland

Senecio pterophorus DC. is an erect, semilignose shrub (fig. 1) which grows up to 2 m high. Is a chamaephyte basipetal branch-shedder (ORSHAN, Plant pheno-morphological studies in Mediterranean type ecosystems: 210-211. 1989) whose new branches appear below inflorescences but not from the lower parts of the plant. Leaves lanceolate. Stems are annual and develop at their apex a great number of small (up to 15 mm in diameter) yellow capitula which are grouped in a corymbose-paniculated inflorescence (HARVEY & SONDER, Flora Capensis: Cape Colony, Caffraria & Port Natal 3: 386.1865).

2me catalogue d'estampes composant le cabinet de M. L... [Laterrade] Vente 20 d��c. 1858... / r��dig�� par A. Rochoux... ; [expert] Vign��res

[Vente. Estampes. 1858-12-20 - 1858-12-22. Paris]

Les Imitacions de vaixella fina importada a la Hispania Citerior (segles I aC-I dC)

Aquesta obra ��s fruit de la taula rodona ��Imitatio Vasaria. Les imitacions de vaixella fina a la Hisp��nia Citerior en ��poca tardorepublicana i altimperial: producci�� i comercialitzaci����, que va reunir durant tres dies representants de tretze grups de recerca per reflexionar sobre les imitacions de les cer��miques fines d���importaci�� d�����poca romana tardorepublicana i altimperial. Com a resultat d���aquestes xerrades es van redactar 14 articles que presenten els estats de la q��esti�� que cada grup de recerca va portar a terme en el seu ��mbit geogr��fic i en els jaciments on van desenvolupar el seu treball de camp: diverses zones de la Hisp��nia Citerior des de les universitats de Girona, Barcelona, Aut��noma de Barcelona, Val��ncia, Alacant i Valladolid, aix�� com des dels Museus d���Arqueologia de Catalunya-Emp��ries, Matar�� i Badalona, i de l���ICAC. Dos articles del llibre, per��, se centren en un altre punt de la Mediterr��nia occidental, el Llenguadoc, aportat per un grup del Centre National de la Recherche Scientifique (CNRS).

Role of DC-SIGN in Lassa virus entry into human dendritic cells.

The arenavirus Lassa virus (LASV) causes a severe hemorrhagic fever with high mortality in humans. Antigen-presenting cells, in particular dendritic cells (DCs), are early and preferred targets of LASV, and their productive infection contributes to the virus-induced immunosuppression observed in fatal disease. Here, we characterized the role of the C-type lectin DC-specific ICAM-3-grabbing nonintegrin (DC-SIGN) in LASV entry into primary human DCs using a chimera of the prototypic arenavirus lymphocytic choriomeningitis virus (LCMV) expressing the LASV glycoprotein (rLCMV-LASVGP). We found that differentiation of human primary monocytes into DCs enhanced virus attachment and entry, concomitant with the upregulation of DC-SIGN. LASV and rLCMV-LASVGP bound to DC-SIGN via mannose sugars located on the N-terminal GP1 subunit of LASVGP. We provide evidence that DC-SIGN serves as an attachment factor for rLCMV-LASVGP in monocyte-derived immature dendritic cells (MDDC) and can accelerate the capture of free virus. However, in contrast to the phlebovirus Uukuniemi virus (UUKV), which uses DC-SIGN as an authentic entry receptor, productive infection with rLCMV-LASVGP was less dependent on DC-SIGN. In contrast to the DC-SIGN-mediated cell entry of UUKV, entry of rLCMV-LASVGP in MDDC was remarkably slow and depended on actin, indicating the use of different endocytotic pathways. In sum, our data reveal that DC-SIGN can facilitate cell entry of LASV in human MDDC but that its role seems distinct from the function as an authentic entry receptor reported for phleboviruses.

Differentiation towards regulatory DC is maintained during RSV infection in airway epithelial cells

Airway epithelial cells have been shown to drive differentiation of monocytes into dendritic cells (DC) with suppressive phenotype. In this study we investigated the impact of virus-induced inflammatory mediator production on DC development. Monocyte differentiation into functional DC, as reflected by the expression of CD11c, CD123, BDCA-4 and DC-SIGN and the capacity to activate T cells, was similar for respiratory syncytial virus (RSV)- and mock-infected BEAS-2B and A549 cells. RSV-conditioned culture media resulted in a partially mature DC phenotype, but failed to upregulate CD80, CD83, CD86 and CCR7 and failed to release pro-inflammatory mediators upon TLR triggering. Nevertheless, these DCs were able to maintain an antiviral response by the release of type I IFN. Collectively, these data indicate that the airway epithelium maintains an important suppressive DC phenotype under inflammatory conditions induced by RSV infection.

CCL21 is sufficient to mediate DC migration, maturation and function in the absence of CCL19.

Mice deficient in CCR7 signals show severe defects in lymphoid tissue architecture and immune response. These defects are due to impaired attraction of CCR7+ DC and CCR7+ T cells into the T zones of secondary lymphoid organs and altered DC maturation. It is currently unclear which CCR7 ligand mediates these processes in vivo as CCL19 and CCL21 show an overlapping expression pattern and blocking experiments have given contradictory results. In this study, we addressed this question using CCL19-deficient mice expressing various levels of CCL21. Complete deficiency of CCL19 and CCL21 but not CCL19 alone was found to be associated with abnormal frequencies and localization of DC in na��ve LN. Similarly, CCL19 was not required for DC migration from the skin, full DC maturation and efficient T-cell priming. Our findings suggest that CCL21 is the critical CCR7 ligand regulating DC homeostasis and function in vivo with CCL19 being redundant for these processes.

CARACTERIZA����O DE FRUTOS E ��RVORES DE CAGAITA (Eugenia dysenterica DC.) NO SUDESTE DO ESTADO DE GOI��S, BRASIL

Dentre as esp��cies frut��feras do bioma cerrado destaca-se a cagaiteira (Eugenia dysenterica DC., Myrtaceae), cujos frutos s��o consumidos in natura ou processados. Os frutos, folhas e casca apresentam propriedades medicinais, a madeira �� utilizada em pequenas constru����es e carv��o. Objetivou-se caracterizar frutos e ��rvores da esp��cie por amostragem de popula����es de plantas existentes no Sudeste de Goi��s. Coletaram-se 1344 frutos de 112 plantas de 10 sub-popula����es para caracteriza����o f��sica dos mesmos e dados de 95 ��rvores, visando a sua descri����o morfol��gica. Constatou-se varia����o significativa ao n��vel de 1% de probabilidade entre as 112 plantas para todos os caracteres de fruto, assim como entre plantas dentro de subpopula����o e entre as m��dias de subpopula����es. A m��dia para a vari��vel peso de fruto e n��mero de sementes por fruto foi de 12,67g e 1,70, respectivamente. Os valores m��ximos e m��nimos encontrados para a vari��vel altura de planta foram, respectivamente, 11,0 m e 4,10 m e para di��metro de copa foram de 10,30 m e 1,80m.