Overall, we found that the neuroinflammatory pathological markers in late stage AD human tissue to have a similar pattern in both EOAD and LOAD, though the severity of the pathological markers in the younger group was higher. Understanding the age effect in AD will be important when testing modifying agents that act on the neuroinflammation.

A germplasm set of twenty-five grapevine accessions, forming eleven groups of possible berry skin color mutants, were genotyped with twelve microsatellite loci, being eleven of them identified as true color mutants. The polyphenolic profiling of the confirmed mutant cultivars revealed a total of twenty-four polyphenols, comprising non-colored compounds (phenolic acids, flavan-3-ols, flavonols and a stilbene) and anthocyanins. Results showed differences in the contribution of malvidin-3-O-glucoside to the characteristic Pinot Noir anthocyanins profile. Regarding the two Pique-Poul colored variants, the lighter variant was richer than the darker one in all classes of compounds, excepting anthocyanins. In Moscatel Galego Roxo the F3'H pathway seems to be more active than F3'5'H, resulting in higher amounts of cyanidin, precursor of the cyanidin derivatives. As far as we are aware, this is the first time that a relationship between the content of polyphenolic compounds is established in groups of grape berry skin color mutant cultivars.

A set of 87 apple accessions, located in three Portuguese apple germplasm collections, plus eight reference cultivars, were analyzed using 16 SSRs with the aim of assessing their genetic diversity and structure and evaluating relationships among them. Among the accessions studied, 64 unique genotypes were identified, 51 diploids and 13 putative triploids, revealing 19 groups of synonyms and 4 of homonyms. The genetic analyses performed by Bayesian modelbased clustering (Structure) revealed a clear differentiation of two major groups (RPP1 and RPP2), one of them (RPP1) corresponding to old local Portuguese accessions, some of them putatively derived from ancient hybridization with Reineta, and the second one (RPP2) including all reference accessions and local Portuguese accessions considered to be of more recent origin. These results were confirmed by factorial correspondence analysis (FCA) and molecular variance analysis (AMOVA) and are in accordance with the Jaccard coefficients. Results indicate that the Portuguese apple germplasm includes an important and distinct gene pool of cultivars with respect to reference international cultivars, being a relevant source of genetic diversity for present and future breeding programs, originated at least 200 years ago, when some of these cultivars were firstly named. Moreover, this study will be useful to improve the apple germplasm management and in the definition of a preservation strategy concerning the Portuguese apple landraces.

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Highlights d Single inhibitions of F-actin crosslinkers do not lead to cytokinesis failure d Cytokinesis fails upon double inhibition of the crosslinkers plastin and bH-spectrin d Their joint loss collapses the actomyosin network that forms the cytokinetic ring d Ring assembly with these two distinct crosslinker types is modeled in silico

The bipolar spindle is a highly dynamic structure that assembles transiently around the chromosomes and provides the mechanical support and the forces required for chromosome segregation. Spindle assembly and chromosome movements rely on the regulation of microtubule dynamics and a fine balance of forces exerted by various molecular motors. Chromosomes are themselves central players in spindle assembly. They generate a RanGTP gradient that triggers microtubule nucleation and stabilization locally and they interact dynamically with the microtubules through motors targeted to the chromatin. We have previously identified and characterized two of these so-called chromokinesins: Xkid (kinesin 10) and Xklp1 (kinesin 4). More recently, we found that Hklp2/kif15 (kinesin 12) is targeted to the chromosomes through an interaction with Ki-67 in human cells and is therefore a novel chromokinesin. Hklp2 also associates with the microtubules specifically during mitosis, in a TPX2 (targeting protein for Xklp2)-dependent manner. We have shown that Hklp2 participates in spindle pole separation and in the maintenance of spindle bipolarity in metaphase. To better understand the function of Hklp2, we have performed a detailed domain analysis. Interestingly, from its positioning on the chromosome arms, Hklp2 seems to restrict spindle pole separation. In the present review, we summarize the current knowledge of the function and regulation of the different kinesins associated with chromosome arms during cell division, including Hklp2 as a novel member of this so-called chromokinesin family.

OBJETIVO: Descrever a tendência da mortalidade por câncer geral e tipos mais frequentes entre homens e mulheres residentes nas capitais e demais municípios das cinco macrorregiões do Brasil entre 1978 e 2017. MÉTODOS: Estudo de séries temporais com dados de mortalidade corrigidos por redistribuição das causas maldefinidas. Foi calculada a mortalidade proporcional de câncer para Brasil e regiões. A variação percentual anual das taxas para o total de câncer e tipos específicos em cada segmento e na desagregação selecionada foi calculada por regressão linear generalizada com ligação gaussiana. RESULTADOS: A proporção de câncer aumentou progressivamente para ambos os sexos de 1978 a 2017. Diferenças importantes entre as capitais e o interior das macrorregiões foram vistas com dados desagregados. Os maiores declínios ocorreram para o câncer de estômago, exceto nas regiões Norte e interior da Nordeste, e de colo do útero, com queda generalizada, com exceção do interior da região Norte. O câncer de pulmão teve queda entre homens nas regiões Sudeste e Sul e aumento generalizado entre mulheres. Os cânceres de mama e de próstata tenderam a diminuir nas regiões Sudeste e Sul e entre residentes das capitais, mostrando, porém, aumento no interior das regiões Norte e Nordeste. O câncer colorretal teve tendência geral de aumento; nas capitais houve estabilidade entre homens da região Sul e entre mulheres das regiões Sudeste e Centro-Oeste e queda entre mulheres da região Sul a partir de 2007. CONCLUSÕES: A mortalidade por câncer apresentou grande variação entre os residentes de capitais e do interior das grandes regiões do país. Diminuição clara da mortalidade foi vista para os principais tipos nas regiões Sudeste e Sul. As regiões Norte e Nordeste apresentam padrões compatíveis com cânceres associados à pobreza ao mesmo tempo que se destacam pelo grande aumento daqueles relacionados ao estilo de vida sedentário.

Grapevine germplasm, including 38 of the main Portuguese cultivars and three foreign cultivars, Pinot Noir, Pinot Blanc and Chasselas, used as a reference, and 37 true-to-type clones from the Alvarinho, Arinto, Loureiro, Moscatel Galego Branco, Trajadura and Vinhão cultivars were studied using AFLP and three retrotransposon-based molecular techniques, IRAP, REMAP and SSAP. To study the retrotransposon-based polymorphisms, 18 primers based on the LTR sequences of Tvv1, Gret1 and Vine-1 were used. In the analysis of 41 cultivars, 517 IRAP, REMAP, AFLP and SSAP fragments were obtained, 83% of which were polymorphic. For IRAP, only the Tvv1Fa primer amplified DNA fragments. In the REMAP analysis, the Tvv1Fa-Ms14 primer combination only produced polymorphic bands, and the Vine-1 primers produced mainly ISSR fragments. The highest number of polymorphic fragments was found for AFLP. Both AFLP and SSAP showed a greater capacity for identifying clones, resulting in 15 and 9 clones identified, respectively. Together, all of the techniques allowed for the identification of 54% of the studied clones, which is an important step in solving one of the challenges that viticulture currently faces.