995 resultados para Marcus, Emma
Resumo:
Plasmodium vivax is the most widespread parasite causing malaria, being especially prevalent in the Americas and Southeast Asia. Children are one of the most affected populations, especially in highly endemic areas. However, there are few studies evaluating the therapeutic response of infants with vivax malaria. This study retrospectively evaluated the parasitaemia clearance in children diagnosed with vivax malaria during the first five days of exclusive treatment with chloroquine (CQ). Infants aged less than six months old had a significantly slower parasitaemia clearance time compared to the group of infants and children between six months and 12 years old (Kaplan-Meier survival analysis; Wilcoxon test; p = 0.004). The impaired clearance of parasitaemia in younger children with vivax malaria is shown for the first time in Latin America. It is speculated that CQ pharmacokinetics in young children with vivax malaria is distinct, but this specific population may also allow the detection of CQ-resistant parasites during follow-up, due to the lack of previous immunity.
Resumo:
Plasmodium vivax radical cure requires the use of primaquine (PQ), a drug that induces haemolysis in glucose-6-phosphate dehydrogenase deficient (G6PDd) individuals, which further hampers malaria control efforts. The aim of this work was to study the G6PDd prevalence and variants in Latin America (LA) and the Caribbean region. A systematic search of the published literature was undertaken in August 2013. Bibliographies of manuscripts were also searched and additional references were identified. Low prevalence rates of G6PDd were documented in Argentina, Bolivia, Mexico, Peru and Uruguay, but studies from Curaçao, Ecuador, Jamaica, Saint Lucia, Suriname and Trinidad, as well as some surveys carried out in areas of Brazil, Colombia and Cuba, have shown a high prevalence (> 10%) of G6PDd. The G6PD A-202A mutation was the variant most broadly distributed across LA and was identified in 81.1% of the deficient individuals surveyed. G6PDd is a frequent phenomenon in LA, although certain Amerindian populations may not be affected, suggesting that PQ could be safely used in these specific populations. Population-wide use of PQ as part of malaria elimination strategies in LA cannot be supported unless a rapid, accurate and field-deployable G6PDd diagnostic test is made available.
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Anaemia is amongst the major complications of malaria, a major public health problem in the Amazon Region in Latin America. We examined the haemoglobin (Hb) concentrations of malaria-infected patients and compared it to that of malaria-negative febrile patients and afebrile controls. The haematological parameters of febrile patients who had a thick-blood-smear performed at an infectious diseases reference centre of the Brazilian Amazon between December 2009-January 2012 were retrieved together with clinical data. An afebrile community control group was composed from a survey performed in a malaria-endemic area. Hb concentrations and anaemia prevalence were analysed according to clinical-epidemiological status and demographic characteristics. In total, 7,831 observations were included. Patients with Plasmodium falciparum infection had lower mean Hb concentrations (10.5 g/dL) followed by P. vivax-infected individuals (12.4 g/dL), community controls (12.8 g/dL) and malaria-negative febrile patients (13.1 g/dL) (p < 0.001). Age, gender and clinical-epidemiological status were strong independent predictors for both outcomes. Amongst malaria-infected individuals, women in the reproductive age had considerably lower Hb concentrations. In this moderate transmission intensity setting, both vivax and falciparum malaria are associated with reduced Hb concentrations and risk of anaemia throughout a wide age range.
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Estudi sobre els elements que han portat a considerar l'obra de teatre 'Primera història d'Esther' de Salvador Espriu un homenatge a la llengua catalana.
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The molecular basis of Plasmodium vivax chloroquine (CQ) resistance is still unknown. Elucidating the molecular background of parasites that are sensitive or resistant to CQ will help to identify and monitor the spread of resistance. By genotyping a panel of molecular markers, we demonstrate a similar genetic variability between in vitro CQ-resistant and sensitive phenotypes of P. vivax parasites. However, our studies identified two loci (MS8 and MSP1-B10) that could be used to discriminate between both CQ-susceptible phenotypes among P. vivax isolates in vitro. These preliminary data suggest that microsatellites may be used to identify and to monitor the spread of P. vivax-resistance around the world.
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In the Americas, areas with a high risk of malaria transmission are mainly located in the Amazon Forest, which extends across nine countries. One keystone step to understanding the Plasmodium life cycle in Anopheles species from the Amazon Region is to obtain experimentally infected mosquito vectors. Several attempts to colonise Ano- pheles species have been conducted, but with only short-lived success or no success at all. In this review, we review the literature on malaria transmission from the perspective of its Amazon vectors. Currently, it is possible to develop experimental Plasmodium vivax infection of the colonised and field-captured vectors in laboratories located close to Amazonian endemic areas. We are also reviewing studies related to the immune response to P. vivax infection of Anopheles aquasalis, a coastal mosquito species. Finally, we discuss the importance of the modulation of Plasmodium infection by the vector microbiota and also consider the anopheline genomes. The establishment of experimental mosquito infections with Plasmodium falciparum, Plasmodium yoelii and Plasmodium berghei parasites that could provide interesting models for studying malaria in the Amazonian scenario is important. Understanding the molecular mechanisms involved in the development of the parasites in New World vectors is crucial in order to better determine the interaction process and vectorial competence.
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Systemic sclerosis (SSc) is a fibrotic autoimmune disease in which the genetic component plays an important role. One of the strongest SSc association signals outside the human leukocyte antigen (HLA) region corresponds to interferon (IFN) regulatory factor 5 (IRF5), a major regulator of the type I IFN pathway. In this study we aimed to evaluate whether three different haplotypic blocks within this locus, which have been shown to alter the protein function influencing systemic lupus erythematosus (SLE) susceptibility, are involved in SSc susceptibility and clinical phenotypes. For that purpose, we genotyped one representative single-nucleotide polymorphism (SNP) of each block (rs10488631, rs2004640, and rs4728142) in a total of 3,361 SSc patients and 4,012 unaffected controls of Caucasian origin from Spain, Germany, The Netherlands, Italy and United Kingdom. A meta-analysis of the allele frequencies was performed to analyse the overall effect of these IRF5 genetic variants on SSc. Allelic combination and dependency tests were also carried out. The three SNPs showed strong associations with the global disease (rs4728142: P = 1.34×10(-8), OR = 1.22, CI 95% = 1.14-1.30; rs2004640: P = 4.60×10(-7), OR = 0.84, CI 95% = 0.78-0.90; rs10488631: P = 7.53×10(-20), OR = 1.63, CI 95% = 1.47-1.81). However, the association of rs2004640 with SSc was not independent of rs4728142 (conditioned P = 0.598). The haplotype containing the risk alleles (rs4728142*A-rs2004640*T-rs10488631*C: P = 9.04×10(-22), OR = 1.75, CI 95% = 1.56-1.97) better explained the observed association (likelihood P-value = 1.48×10(-4)), suggesting an additive effect of the three haplotypic blocks. No statistical significance was observed in the comparisons amongst SSc patients with and without the main clinical characteristics. Our data clearly indicate that the SLE risk haplotype also influences SSc predisposition, and that this association is not sub-phenotype-specific.
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S’han estudiat un total de 75 mascles sencers (50% Pietrain, 25% Duroc i 25%Landrace) des de les dues setmanes de vida (±4,00kg) en el Centre de Control Porcí del’IRTA (CCP) fins les 24 hores posteriors al seu sacrifici (±100,00kg) a l’escorxador delCentre de Tecnologia de la Carn de l’IRTA (CTC). Al CCP es varen avaluar aspectes decomportament i benestar animal, així com diferents paràmetres de consums icreixements individuals de cada animal. A l’escorxador del CTC es van avaluar lescaracterístiques de qualitat de la canal i la carn de les 75 canals provinents dels animals estudiats. Les dades de consum individual es van poder recollir mitjançant el sistema SACA (Sistema Automàtic de Consum d’Aliment) que permet saber quins són elsconsums individuals de cada animal i en quin moment del dia es produeixen les sevesvisites a la menjadora.L’objectiu era determinar l’efecte del dejuni en granja (DJ) i del temps d’esperaen l’escorxador (TE) sobre el benestar animal, la qualitat de la canal i la carn de porc iel que es van anomenar altres variables i ràtios. També es van analitzar els consumsindividuals d’aliment per cada animal. Es van tenir en compte dos períodes de dejuni (2i 12 hores) i tres temps d’espera en l’escorxador (0, 5 i 10 hores)
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A rapid decrease in parasitaemia remains the major goal for new antimalarial drugs and thus, in vivo models must provide precise results concerning parasitaemia modulation. Hydroxyethylamine comprise an important group of alkanolamine compounds that exhibit pharmacological properties as proteases inhibitors that has already been proposed as a new class of antimalarial drugs. Herein, it was tested the antimalarial property of new nine different hydroxyethylamine derivatives using the green fluorescent protein (GFP)-expressing Plasmodium bergheistrain. By comparing flow cytometry and microscopic analysis to evaluate parasitaemia recrudescence, it was observed that flow cytometry was a more sensitive methodology. The nine hydroxyethylamine derivatives were obtained by inserting one of the following radical in the para position: H, 4Cl, 4-Br, 4-F, 4-CH3, 4-OCH3, 4-NO2, 4-NH2 and 3-Br. The antimalarial test showed that the compound that received the methyl group (4-CH3) inhibited 70% of parasite growth. Our results suggest that GFP-transfected P. berghei is a useful tool to study the recrudescence of novel antimalarial drugs through parasitaemia examination by flow cytometry. Furthermore, it was demonstrated that the insertion of a methyl group at the para position of the sulfonamide ring appears to be critical for the antimalarial activity of this class of compounds.
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In the present paper, we announce new draft genomes of four Leptospira interrogans strains named Acegua, RCA, Prea, and Capivara. These strains were isolated in the state of Rio Grande do Sul, Brazil, from cattle, dog, Brazilian guinea pig, and capybara, respectively.
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This working – paper will be focused on three key issues: • How will affect the enlargement to the Justice and Home Affairs Cooperation. Especially, the absortion of Schenguen Agreements and the overall JHA by the candidate countries. • The enlargement impact over the European Immigraton Policy and the specific policies carried out by the EU Member States. The main question is the free movement of persons safeguard, in order to protect external borders of European Union. • An analysis of September, 11 attacks against U.S.A might be necessary to understand the future changes on JHA policy.
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Neste artigo, trata-se o impacto de reestruturações de cunho gerencialista sobre a subjetividade de trabalhadores em organizações ambientalistas do terceiro setor historicamente ligadas à benemerência, ao humanismo e à luta por direitos. O crescimento dessa população organizacional tem gerado competição por recursos, com a consequente busca por sistemas e modelos gerenciais que possam viabilizar a sobrevivência de cada organização via vantagens comparativas associadas à eficácia, à eficiência, à efetividade e ao posicionamento de marca. Nesse contexto, percebe-se uma crescente adoção de modelos importados do segundo setor - privado de interesse privado. Elementos característicos do gerencialismo, tais como intensificação e aceleração do trabalho, precarização das relações trabalhistas e primazia do determinismo econômico, são também assimilados no processo. Investe-se no culto à excelência e na mobilização psíquica do sujeito como formas de se enquadrar a pessoa como ativo estratégico da organização. As práticas decorrentes chocam-se com os valores humanistas geralmente vigentes no terceiro setor, causando conflitos de racionalidade e intrapsíquicos. Desenvolveu-se pesquisa qualitativa e exploratória, baseada em entrevistas com profissionais de quatro organizações ambientais de relevo no País, para fazer emergir, por meio da análise do discurso, a percepção dos sujeitos sobre o fenômeno em questão. Os resultados mostram que a ideologia gerencialista foi, pelo menos nos casos estudados, assimilada pelo trabalhador, que as relações de trabalho estão se precarizando em nome da rentabilidade financeira dos investimentos na organização, que as estratégias de defesa e adesão implicam sofrimento subjetivo e que o terceiro setor se distancia crescentemente de sua identidade histórica de esfera de agenciamento marcada por uma racionalidade substantiva.
Resumo:
Abdo et Sennes (262-263v) ; Acisclus et Victoria (163-165) ; Adrianus (72v-77) ; Affra (45v) ; Amancius (122-125v) ; Andochius (90v-92v) ; Andreas (186-194v) ; Antoninus (68v-70v, 221v) ; Apollinaris (1bis-1bis v); Audardus (254-259) ; Augustinus (231-232v) ; Bartholomeus (55v-59v) ; Bricius Turonensis (162v-163) ; Caprasius (107-108) ; Caprasius et Fides (218-219v) ; Cassianus (48v) ; Cecilia (168v-174v) ; Christina (12-16v) ; Christoforus (22-24) ; Ciricus et Julita (2v-6, 260v-262) ; Cirillus (2-2v) ; Ciprianus (47v-48v) ; Claudius, Asterius, Neo (54v-55v) ; Clemens (174v-176) ; Cosmas et Damianus (97v-98v) ; Crisantus et Daria (179-182v) ; Crucis exaltatio (83-84) ; Cucufas (24-25) ; Dalmacius Rutenae urbis (131-132v) ; Desiderius Caturcensis (207v-217v) ; Dionisius (105-106v) ; Donatus (263v-265v) ; Eleazarus (38-38v) ; Eptadius (59v-61v) ; Eufemia (84-86) ; Eugenia (78-83) ; Eulalia (195v-199) ; Eustachius (125v-129v) ; Fabius (34v-36v) ; Fausta (52-53v) ; Faustus, Januarius et Marcialis (106v-107) ; Felix (36v-38) ; Felix Nolensis ep. (25-27) ; Filibertus (227v-231) ; Genesius Arelatensis (61v-62v) ; Germanus Autissiodorensis (33-34) ; Gervasius et Protasius (259v-260v) ; Gregorius papa (222-224v) ; Grisogonus (176v-178) ; Jacobus major (20v-21v) ; Jeronimus (100-102) ; Johannis Baptistae decollatio (66v-68v) ; Johannes et Paulus (227-227v) ; Julia (11-12) ; Julianus (64-64v) ; Julianus, auct. Gregorio Turonense (265v-272) ; Julius (178-178v) ; Justa et Rufina (6v-7) ; Justina et Ciprianus (92v-97v) ; Justus et Pastor (44v-45) ; Laurianus (167v-168v) ; Leochadia (195-195v) ; Leodegarius (102-104v) ; Licerius (62v-64) ; Longinus (195) ; Lucia (199-200v) ; Machabei (34-34v) ; Mammes (45v-47v) ; Marcellinus et Petrus (259-259v) ; Marcellus (114) ; Marcellus Cavalonis (219v-220) ; Marcellus Kavilonensis (1v-1bis) ; Marcus (224v-225) ; Marciana (129v-131) ; Marcianus (206-206v) ; Margarita (7-11) ; Mariae assumptio (48v-51) ; Martinus, auct. Sulpicio Severo (133-160v) ; Matheus (86-89) ; Mauricius (89-90v) ; Mauricius, Exuperius, Candidus, Innocentius, Victor cum sociis eorum (272-272v) ; Maurinus (245-247v) ; Maximus (241-244v) ; Medardus (225-227) ; Mennas (160v-162v) ; Michael (98v-100) ; Mimius (39v-40) ; Nazarius et Celsus (27-31v) ; Omnes Sancti (118v-122) ; Pantaleo (31v-32v) ; Petri cathedra (220-221v, 249-250) ; Petrus, ep. Alexandriae (248-249) ; Procopius (39-39v) ; Quintinus (114-118v) ; Regina (70v-72v) ; Reparata (104v-105) ; Romanus (165-167) ; Sabina (64v-66v) ; Salvius (77-78) ; Saturninus et Sisinnius (178v) ; Saturninus Tolosanensis (182v-185v, 232v-239) ; Segolena (16v-20v) ; Servandus et Germanus (108-109) ; Sixtus, Laurentius et Ypolitus (40-44v); Symo et Judas (109-112v) ; Symphorianus (53v-54v) ; Teodota (38v-39) ; Terencianus (239-241) ; Theodardus Narbonensis (250-254) ; Thomas (200v-206) ; Valerianus (206v-207) ; Vamnes (51-52) ; Vincentius et Savina (112v-114). Le f. 220v contient un catalogue ancien de la bibliothèque de Moissac.
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The timing of puberty is highly variable. We carried out a genome-wide association study for age at menarche in 4,714 women and report an association in LIN28B on chromosome 6 (rs314276, minor allele frequency (MAF) = 0.33, P = 1.5 x 10(-8)). In independent replication studies in 16,373 women, each major allele was associated with 0.12 years earlier menarche (95% CI = 0.08-0.16; P = 2.8 x 10(-10); combined P = 3.6 x 10(-16)). This allele was also associated with earlier breast development in girls (P = 0.001; N = 4,271); earlier voice breaking (P = 0.006, N = 1,026) and more advanced pubic hair development in boys (P = 0.01; N = 4,588); a faster tempo of height growth in girls (P = 0.00008; N = 4,271) and boys (P = 0.03; N = 4,588); and shorter adult height in women (P = 3.6 x 10(-7); N = 17,274) and men (P = 0.006; N = 9,840) in keeping with earlier growth cessation. These studies identify variation in LIN28B, a potent and specific regulator of microRNA processing, as the first genetic determinant regulating the timing of human pubertal growth and development.
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This paper describes an experiment to explore the effects of the TENCompetence infrastructure for supporting lifelong competence development which is now in development. This infrastructure provides structured, multi-leveled access to learning materials, based upon competences. People can follow their own learning path, supported by a listing of competences and their components, by competence development plans attached to competences and by the possibility to mark elements as complete. We expected the PCM to have an effect on (1) control of participants of their own learning, and (2) appreciation of their learning route, (3) of the learning resources, (4) of their competence development, and (5) of the possibilities of collaboration. In the experiment, 44 Bulgarian teachers followed a distance learning course on a specific teaching methodology for six weeks. Part of them used the TENCompetence infrastructure, part used an infrastructure which was similar, except for the characterizing elements mentioned above. The results showed that in the experimental condition, more people passed the final competence assess-ment, and people felt more in control of their own learning. No differences between the two groups were found on the amount and appreciation of collaboration and on further measures of competence development.