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Docking studies in target proteins involved in mechanisms of antibacterial acti...

Alves, Maria José; Froufe, Hugo J.C.; Costa, Ana F.T.; Santos, Anabela F.; Oliveira, Liliana G.; Osório, Sara R.M.; Abreu, Rui M.V.; Pintado, Manuela

In the present work, the knowledge on target proteins of standard antibiotics was extended to antimicrobial mushroom compounds. Docking studies were performed for 34 compounds in order to evaluate their affinity to bacterial proteins that are known targets for some antibiotics with different mechanism of action: inhibitors of cell wall synthesis, inhibitors of protein synthesis, inhibitors of nucleic acids synt...

Data: 2014   |   Origem: Biblioteca Digital do IPB

Propensity for biofilm formation by clinical isolates from urinary tract infect...

Alves, Maria José; Barreira, João C.M.; Carvalho, Inês; Trinta, Luís; Pereira, Liliana; Ferreira, Isabel C.F.R.; Pintado, Manuela

A group of biofilm-producing bacteria isolated from patients with urinary tract infections was evaluated, identifying the main factors contributing to biofilm formation. Among the 156 isolates, 58 (37.2%) were biofilm producers. The bacterial species (P<0.001), together with patient's gender (P = 0.022), were the factors with the highest influence for biofilm production. There was also a strong correlation of c...

Data: 2014   |   Origem: Biblioteca Digital do IPB

Antimicrobial activity of phenolic compounds identified in wild mushrooms, SAR ...

Alves, Maria José; Ferreira, Isabel C.F.R.; Froufe, Hugo J.C.; Abreu, Rui M.V.; Martins, Anabela; Pintado, Manuela

Aim and Methods: Although the antimicrobial activity of extracts from several mushroom species have been reported, studies with the individual compounds present in that extracts are scarce. Herein, the antimicrobial activity of different phenolic compounds identified and quantified in mushroom species from all over the world was evaluated. Furthermore, a structure activity relationship (SAR) analysis and molec...

Data: 2013   |   Origem: Biblioteca Digital do IPB

A review on antifungal activity of mushroom (Basidiomycetes) extracts and isola...

Alves, Maria José; Ferreira, Isabel C.F.R.; Dias, Joana F.; Teixeira, Vânia; Martins, Anabela; Pintado, Manuela

The present review reports the antifungal activity of mushroom extracts and isolated compounds including high (e.g. peptides and proteins) and low (e.g. sesquiterpenes and other terpenes, steroids, organic acids, acylcyclopentenediones and quinolines) molecular weight compounds. Most of the studies available on literature focused on screening of antifungal activity of mushroom extracts, rather than of isolated ...

Data: 2013   |   Origem: Biblioteca Digital do IPB

Synergistic effects between wild mushroom extracts and standard antibiotics aga...

Alves, Maria José; Ferreira, Isabel C.F.R.; Martins, Anabela; Pintado, Manuela

The indiscriminate use of antibiotics and chemotherapeutic agents, among other factors, has been contributing for the development of resistant species (Andrade et al. 2006). Bacteria such as methicillin-resistant Staphylococcus aureus (MRSA) and Extended-spectrum β-lactamase (ESBL)-producing Escherichia coli are microorganisms of concern with regard to multi-resistances. Due to this problem, there is a need to ...

Data: 2013   |   Origem: Biblioteca Digital do IPB

Susceptibility to biofilm formation by clinical isolates from patients with uri...

Alves, Maria José; Barreira, João C.M.; Ferreira, Isabel C.F.R.; Martins, Anabela; Pintado, Manuela

Implantable medical devices help enhancing therapeutic results, saving human lives and improving life quality of patients. However, these devices can be readily colonized by bacteria and fungi, since the presence of a foreign body will reduce the number of microorganisms necessary to produce an infection (Guggenbichler et al., 2011). Accordingly, the aim of this study was to evaluate a group of biofilm producin...

Data: 2013   |   Origem: Biblioteca Digital do IPB


Susceptibility to biofilm formation by clinical isolates from patients with uri...

Alves, Maria José; Barreira, João C.M.; Ferreira, Isabel C.F.R.; Martins, Anabela; Pintado, M. E.


Ação antimicrobiana de extratos fenólicos de cogumelos silvestres contra Neisse...

Alves, Maria José; Marques, Azucena; Ferreira, Isabel C.F.R.; Martins, Anabela; Pintado, Manuela

O relatório da OMS publicado em 2001 faz referência à estimativa de que mais de seis milhões de casos de gonorreia (infeção causada pela Neisseria gonorrhoeae) ocorrem a cada ano e com índices crescentes, principalmente nos países em desenvolvimento. Por outro lado, tem-se vindo a verificar uma resistência emergente deste microrganismo aos agentes antimicrobianos comuns no seu tratamento, sendo um grande obstác...

Data: 2012   |   Origem: Biblioteca Digital do IPB

A review on antimicrobial activity of mushroom (Basidiomycetes) extracts and is...

Alves, Maria José; Ferreira, Isabel C.F.R.; Dias, Joana; Teixeira, Vânia; Martins, Anabela; Pintado, Manuela

Despite the huge diversity of antibacterial compounds, bacterial resistance to first choice antibiotics has been drastically increasing. Moreover, the association between multi-resistant microorganisms and nosocomial infections highlight the problem, and the urgent need for solutions. Natural resources have been exploited in the last years and among them mushrooms could be an alternative as source of new antimi...

Data: 2012   |   Origem: Biblioteca Digital do IPB

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    Financiadores do RCAAP

Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência Programa Operacional da Sociedade do Conhecimento União Europeia