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Artigo Revisado por pares

Krassimira P. Guerra, Rita Delgado, Michael G. B. Drew, Vı́tor Félix,

New N-(3-aminopropyl) (L1, L2) and (2-cyanoethyl) (L3, L4) derivatives of a 14-membered tetraazamacrocycle containing pyridine have been synthesized. The protonation constants of L1 and L2 and the stability constants of their complexes with Ni2+, Cu2+, Zn2+ and Cd2+ metal ions were determined in aqueous solutions by potentiometry, at 298.2 K and ionic strength 0.10 mol dm−3 in KNO3. Both compounds have high overall basicity due to the presence of the aminopropyl arms. Their copper(II) complexes exhibit ...

Tópico(s): Lanthanide and Transition Metal Complexes

2006 - Royal Society of Chemistry | Dalton Transactions

Artigo Revisado por pares

Krassimira P. Guerra, Rita Delgado, Luı́s M. P. Lima, Michael G. B. Drew, Vı́tor Félix,

Two N-methylphosphonic acid derivatives of a 14-membered tetraazamacrocycle containing pyridine have been synthesized, H(4)L(1) and H(6)L(2). The protonation constants of these compounds and the stability constants of complexes of both ligands with Ni(2+), Cu(2+) and Zn(2+) were determined by potentiometric methods at 298 K and ionic strength 0.10 mol dm(-3) in NMe(4)NO(3). The high overall basicity of both compounds is ascribed to the presence of the phosphonate arms. (1)H and (31)P NMR spectroscopic ...

Tópico(s): Magnetism in coordination complexes

2004 - Royal Society of Chemistry | Dalton Transactions

Artigo Acesso aberto Revisado por pares

Mónica Guerra, Rita Neres, Patrícia Salgueiro, Cristina Mendes, Nicolás Ndong-Mabale, Pedro Berzosa, Bruno de Sousa, Ana Paula Arez,

ABSTRACT Efforts to control malaria may affect malaria parasite genetic variability and drug resistance, the latter of which is associated with genetic events that promote mechanisms to escape drug action. The worldwide spread of drug resistance has been a major obstacle to controlling Plasmodium falciparum malaria, and thus the study of the origin and spread of associated mutations may provide some insights into the prevention of its emergence. This study reports an analysis of P. falciparum genetic ...

Tópico(s): Trypanosoma species research and implications

2016 - American Society for Microbiology | Antimicrobial Agents and Chemotherapy

Revisão Acesso aberto Brasil Produção Nacional Revisado por pares

Laura Augusta Barufaldi, Renata Leborato Guerra, Rita de Cássia Ribeiro de Albuquerque, Aline do Nascimento, Raphael Duarte Chança, Mírian Carvalho de Souza, Liz Maria de Almeida,

Resumo O objetivo deste artigo é avaliar a associação entre uso de cigarros eletrônicos e iniciação ao tabagismo, por meio de uma revisão sistemática com meta-análise de estudos longitudinais. Busca bibliográfica foi realizada nas bases MEDLINE, Embase, LILACS e PsycInfo. As etapas de seleção de referências, extração dos dados e avaliação do risco de viés dos estudos foi realizada em dupla, de forma independente e as divergências discutidas com um terceiro pesquisador para obtenção de consenso. ...

Tópico(s): Obesity, Physical Activity, Diet

2021 - ASSOCIAÇÃO BRASILEIRA DE SAÚDE COLETIVA | Ciência & Saúde Coletiva

Revisão Acesso aberto Brasil Produção Nacional Revisado por pares

Laura Augusta Barufaldi, Renata Leborato Guerra, Rita de Cássia Ribeiro de Albuquerque, Aline do Nascimento, Raphael Duarte Chança, Mírian Carvalho de Souza, Liz de Almeida,

1. World Health Organization. WHO Report on the global tobacco epidemic, 2019: Offer help to quit tobacco use. World Health Organization; 2019. Accessed June 20, 2020. https://apps.who.int/iris/bits... Google Scholar

Tópico(s): Consumer Attitudes and Food Labeling

2021 - EU European Publishing | Tobacco Prevention & Cessation

Artigo Acesso aberto Brasil Produção Nacional Revisado por pares

Fabiane Pomiecinski, Virginia Guerra, Rita Erotildes Maranhão Mariano, Raquel Cristina de Sousa Lima Landim,

Food allergy is characterized by an adverse reaction to food intake, or food additives, mediated by immunological mechanisms (1). The foods most commonly involved in this process are cow's milk, egg, wheat, soy, seafood, fish, peanuts and nuts. But it has also occurred in result of foods formerly not identified as causes of allergies, such as kiwi, sesame and cassava, among others(2). It is assumed that allergic reactions to food affect approximately 6 to 8% of children under 3 years of age and 2 ...

Tópico(s): Breastfeeding Practices and Influences

2017 - UNIVERSIDADE DE FORTALEZA | Revista Brasileira em Promoção da saúde

Artigo Revisado por pares

Krassimira P. Guerra, Rita Delgado,

The new ditopic catecholamide 3,7,11-tris-{N-[3,4-(dihydroxybenzoyl)-aminopropyl]} derivative of a 14-membered tetraazamacrocycle containing pyridine (H6L1) has been synthesized. The protonation constants of (L1)6– and the stability constants of its mono-, homo- and hetero-dinuclear complexes with Fe3+, Cu2+ and Zn2+ metal ions were determined at 298.2 K and ionic strength 0.10 mol dm–3 in KNO3. The large overall basicity of the ligand was ascribed to the very high protonation constants of the catecholate ...

Tópico(s): Magnetism in coordination complexes

2007 - Royal Society of Chemistry | Dalton Transactions

Artigo Revisado por pares

Lucio Guerra, Rita Vincenti,

Tópico(s): Advanced Combinatorial Mathematics

2004 - Springer Nature | Designs Codes and Cryptography

Artigo Acesso aberto Brasil Produção Nacional Revisado por pares

Denis L. Guerra, Maria Rita de Morais Chaves Santos, Cláudio Airoldi,

Uma amostra natural de esmectita oriunda do estado do

Tópico(s): Iron oxide chemistry and applications

2009 - Brazilian Chemical Society | Journal of the Brazilian Chemical Society

Artigo Revisado por pares

S Putinati, Lucio Trevisani, Malvina Gualandi, Giovanni Guerra, Maria Rita Rossi, Sergio Sartori, A Potena,

We carried out a prospective study involving 96 consecutive lung cancer patients at diagnosis, in order to determine through quantitative cultures of the bronchoalveolar lavage (BAL) fluid, the prevalence of pulmonary infections; we also evaluated the relationship between a patient's performance status, immunocompetence, lung cancer stage, histotype and the occurrence of respiratory infections. The patients (81 males, 15 females) had a mean age of 64 ± 9 years. Of these, 62 were smokers, 30 were ex- ...

Tópico(s): Lung Cancer Diagnosis and Treatment

1994 - Elsevier BV | Lung Cancer

Artigo Revisado por pares

Viviana P. Costa, Mara E.M. Braga, Joana P. Guerra, Ana Rita C. Duarte, Catarina M.M. Duarte, Eugénio O.B. Leite, M.H. Gil, Hermínio C. de Sousa,

Abstract We present some selected results indicating the feasibility of preparing therapeutic finished ophthalmic articles, namely commercially available soft contact lenses, using a supercritical solvent impregnation (SSI) technique. Several commercial soft contact lenses were tested and, among these, four lenses were selected for more complete studies: Nelfilcon A (FocusDailies®, CIBA Vision), Omafilcon A (Proclear® Compatibles, CooperVision), Methafilcon A (Frequency® 55, CooperVision) and Hilafilcon ...

Tópico(s): Connexins and lens biology

2010 - Elsevier BV | The Journal of Supercritical Fluids

Artigo Revisado por pares

César García-Cantón, Eva van den Bosch, Agustín J. Ramiréz, Yenny González, I. Auyanet, Rita Guerra, Michael A. Perez, Elvira Fernández, Alceu de Oliveira Toledo, Manuel Lago, María Dolores Checa,

Cardiovascular disease (CVD) is the leading cause of death among chronic kidney disease (CKD) patients. Vascular calcification is highly prevalent in this population and is an independent predictor of cardiovascular mortality. Vascular calcification in uraemic patients is known to be an active and regulated process subject to the action of many promoting and inhibitory factors. The role of vitamin D in this process remains controversial. We evaluated the relationship between serum levels of 25-hydroxyvitamin ...

Tópico(s): Bone health and osteoporosis research

2010 - Oxford University Press | Nephrology Dialysis Transplantation

Artigo Revisado por pares

Rita Guerra, Margarida Rebelo, Maria Benedicta Monteiro, Blake M. Riek, Eric W. Mania, Samuel L. Gaertner, John F. Dovidio,

This experiment examined the effectiveness of one-group and dual-identity recategorization strategies on reducing intergroup bias among 180 European Portuguese and African Portuguese 9- and 10-year-old children. Results revealed that each of these recategorization strategies, relative to one that emphasized separate group identities, was successful in producing positive attitudes toward the outgroup children present during the session, the outgroup as a whole, and the outgroup as a whole three weeks ...

Tópico(s): Racial and Ethnic Identity Research

2010 - SAGE Publishing | Group Processes & Intergroup Relations

Artigo Acesso aberto Revisado por pares

Eric Hehman, Samuel L. Gaertner, John F. Dovidio, Eric W. Mania, Rita Guerra, David C. Wilson, Brian Friel,

This research examined preferences for national- and campus-level assimilative and pluralistic policies among Black and White students under different contexts, as majority- and minority-group members. We targeted attitudes at two universities, one where 85% of the student body is White, and another where 76% of students are Black. The results revealed that when a group constituted the majority, its members generally preferred assimilationist policies, and when a group constituted the minority, ...

Tópico(s): Electoral Systems and Political Participation

2011 - SAGE Publishing | Psychological Science

Artigo Revisado por pares

Alberto Torı́o, Ernesto Fernández, Olga Montes‐Ares, Rita Guerra, M.A. Pérez, María Dolores Checa,

The Cylex Immuknow assay provides a rapid assessment of global immune function in immunocompromised patients by measuring the global immune responses of CD4 T cells from a whole-blood sample. It may help to monitor the immune status of immunosuppressed transplant patients. However, earlier studies have shown that there is no consensus on the utility of the Immuknow assay in renal transplant rejection.T-cell activation was determined by measuring an increase of intracellular adenosine triphosphate ( ...

Tópico(s): Cytomegalovirus and herpesvirus research

2011 - Elsevier BV | Transplantation Proceedings

Artigo Acesso aberto Revisado por pares

Rita Guerra, Margarida Rebelo, Maria Benedicta Monteiro, Samuel L. Gaertner,

This experiment explored whether the benefits of a complete recategorization and a dual identity might effectively be translated into an intervention program designed to reduce prejudice among E uropean P ortuguese and A frican P ortuguese 9‐ to 11‐year‐old children. Participants interacted for 45 minutes in weekly sessions for a month. One month after the last interaction, measures were administered to the children. Results revealed that only recategorization reduced prejudice over time relative ...

Tópico(s): Hearing Impairment and Communication

2012 - Wiley | Journal of Applied Social Psychology

Artigo Revisado por pares

Lorenzo Drago, Elena De Vecchi, L. Nicola, Alberto Colombo, Anna Guerra, Maria Rita Gismondo,

<i>Background:</i> Combination therapy is used to widen the antimicrobial spectrum, minimize toxicity and prevent the emergence of resistant mutants. <i>Methods:</i> Synergy between levofloxacin or ciprofloxacin and ceftazidime, cefepime, imipenem, piperacillin-tazobactam and amikacin was evaluated by checkerboard assay with 55 strains and by time-kill curves with 8 strains of<i> Pseudomonas</i><i>aeruginosa</i> and <i>Acinetobacter </i>spp. <i>Results:</ ...

Tópico(s): Pneumonia and Respiratory Infections

2004 - Karger Publishers | Chemotherapy

Artigo Acesso aberto Brasil Produção Nacional Revisado por pares

Eugênio D. Hottz, Marcus F. Oliveira, Priscila Conrado Guerra Nunes, Rita Maria Ribeiro Nogueira, Rogério Valls-de-Souza, Andrea T. Da Poian, Andrew S. Weyrich, Guy A. Zimmerman, Patrı́cia T. Bozza, Fernando A. Bozza,

BackgroundWorldwide, dengue is the most prevalent human arbovirus disease. Dengue infection may cause a range of clinical manifestations from self-limiting febrile illness through to a life-threatening syndrome accompanied by both bleeding and shock. Thrombocytopenia is frequently observed in mild and severe disease; however, the mechanisms involved in DENV-induced platelet activation and thrombocytopenia are incompletely understood.Patients and methodsFreshly isolated platelets from patients with ...

Tópico(s): Viral Infections and Vectors

2013 - Elsevier BV | Journal of Thrombosis and Haemostasis

Artigo Revisado por pares

Marta Crespo, Alberto Torı́o, V. Mas, Dolores Redondo‐Pachón, María José Pérez‐Sáez, Marisa Mir, Anna Faura, Rita Guerra, Olga Montes‐Ares, María Dolores Checa, Julio Pascual,

Anti-HLA donor-specific antibodies (DSA) identified by single antigen bead array (SAB) are questioned for their excess in sensitivity and lack of event prediction after transplantation. We retrospectively evaluated specific types of preformed DSA (class I, class II or C1q-fixing) and their impact on graft survival. Kidney transplantations performed across negative CDC-crossmatch were included (n = 355). Anti-HLA antibodies were tested using SAB to identify DSA and their capacity to fix C1q. Twenty-eight ...

Tópico(s): Renal Diseases and Glomerulopathies

2013 - Elsevier BV | Transplant Immunology

Artigo Acesso aberto Revisado por pares

Rita Guerra, Samuel L. Gaertner, Raquel António, Matthew P. Deegan,

Abstract This study proposed a new perspective to look at the consequences of the formation of immigrant communities in globalized societies, by investigating the impact of two forms of group indispensability on majority attitudes towards immigrants. Specifically, it explored whether perceived indispensability of different immigrant groups to the national identity and their contributions to the functioning of the host society are related to the development of more positive attitudes towards them. ...

Tópico(s): Racial and Ethnic Identity Research

2015 - Wiley | European Journal of Social Psychology

Artigo Acesso aberto Brasil Produção Nacional Revisado por pares

Leonor Guerra‐Guimarães, Rita Tenente, Carla Pinheiro, Inês Chaves, Maria do Céu Silva, Fernando Cardoso, Sébastien Planchon, Danielle Ribeiro de Barros, Jenny Renaut, Cândido Pinto Ricardo,

A proteomic analysis of the apoplastic fluid (APF) of coffee leaves was conducted to investigate the cellular processes associated with incompatible (resistant) and compatible (susceptible) Coffea arabica-Hemileia vastatrix interactions, during the 24-96 hai period. The APF proteins were extracted by leaf vacuum infiltration and protein profiles were obtained by 2-DE. The comparative analysis of the gels revealed 210 polypeptide spots whose volume changed in abundance between samples (control, resistant ...

Tópico(s): Studies on Chitinases and Chitosanases

2015 - Frontiers Media | Frontiers in Plant Science

Artigo Acesso aberto Revisado por pares

Agnieszka Golec de Zavala, Rita Guerra, Cláudia Simão,

The Leave campaign in the U.K., which advocated exiting the European Union, emphasized anxiety over immigration and the need to take control of the U.K.'s borders. Citizens who expressed concerns about immigration to the U.K. were more likely to vote to leave. Two correlational studies examined the previously unexplored question of whether the Brexit vote and support for the outcome of the E.U. referendum were linked to individual predictors of prejudice towards foreigners: British collective narcissism ( ...

Tópico(s): Personality Traits and Psychology

2017 - Frontiers Media | Frontiers in Psychology

Artigo Acesso aberto Revisado por pares

Raquel António, Rita Guerra, Carla Moleiro,

Two studies explored the link between social contagion concerns and assertive bystanders’ behavioral intentions in homophobic bullying episodes. Study 1 ( N = 216) examined if adolescents’ social contagion concerns (i.e., fear of being misclassified as gay/lesbian) relate to decreased behavioral intentions to help victims of bullying, by increasing negative attitudes towards lesbians and gay men. Study 2 ( N = 230) further explored if inclusive identity representations (i.e., one-group or dual-identity) were ...

Tópico(s): Psychology of Moral and Emotional Judgment

2018 - SAGE Publishing | Group Processes & Intergroup Relations

Artigo Acesso aberto Brasil Produção Nacional Revisado por pares

Priscila Conrado Guerra Nunes, Rita Maria Ribeiro Nogueira, Manoela Heringer, Thaís Chouin-Carneiro, Cintia Damasceno dos Santos Rodrigues, Ana María Bispo de Filippis, Monique da Rocha Queiroz Lima, Flávia Barreto dos Santos,

Dengue is a worldwide problem characterized by a multifactorial pathogenesis. Considering the viral components, it is known that high viremia or high levels of the secreted nonstructural protein 1 (NS1) may be associated with a more severe disease. We aimed to characterize the NS1 antigenemia and viremia in dengue fatal and non-fatal cases, as potential markers of progression to a fatal outcome. NS1 antigenemia and viremia were determined in Brazilian dengue fatal cases (n = 40) and non-fatal cases ( ...

Tópico(s): Dengue and Mosquito Control Research

2018 - Multidisciplinary Digital Publishing Institute | Viruses

Artigo Acesso aberto Revisado por pares

Adriana Espinosa, Rita Guerra, Samineh Sanatkar, Стефаниа Паолини, Daniela Damigella, Orazio Licciardello, Samuel L. Gaertner,

Abstract Social psychology highlights ingroup identity as an important determinant of intergroup attitudes and relations; however, research has demonstrated that its effects can be positive, negative, or nonexistent depending on how such identity is conceptualized. This research explores how national identity inclusiveness (Study 1) and centrality (Study 2) are associated with immigration related attitudes in school and countrywide settings, respectively. Study 1 showed that teachers’ inclusive (i. ...

Tópico(s): Racial and Ethnic Identity Research

2018 - Wiley | Journal of Social Issues

Artigo Acesso aberto Brasil Produção Nacional Revisado por pares

Priscila Conrado Guerra Nunes, Rita Nogueira, Janice Carneiro Coelho, Francisco das Chagas de Carvalho Rodrigues, Natália Gedeão Salomão, Carollina Ceia José, Jorge José de Carvalho, Kíssila Rabelo, Elzinandes de Azeredo, Rodrigo Basílio-de-Oliveira, Carlos Alberto Basílio‐de‐Oliveira, Flávia Barreto dos Santos, Marciano Viana Paes,

Dengue virus (DENV) is an emerging virus involved in outbreaks in Brazil. The association between the virus and vertical transmission, with disorders in the placenta, has raised a worldwide concern. On the 29th gestational week, a pregnant woman presented severe complications due to a DENV infection leading to maternal and fetus death. Postmortem analysis of fetal organs demonstrated the presence of DENV using reverse transcriptase polymerase chain reaction (RT-PCR) in the fetal brain and DENV non- ...

Tópico(s): Global Maternal and Child Health

2019 - Multidisciplinary Digital Publishing Institute | Viruses