30 documents found, page 1 of 3

Sort by Issue Date

Understanding the ecological consequences of deep-sea mining: cadmium’s influen...

Rahman, Saif; Pizarro, Leonor; Magalhães, Catarina; Semedo, Miguel

Background: Metal-rich nodules in the deep ocean contain significant quantities of high-value metals such as copper, nickel, and cobalt [1]. Mining deep-sea minerals is considered as an alternative to land mining, to reduce environmental effects and gain geopolitical advantages [1,2]. However, this action may expose deep-sea microbes to toxic concentrations of metals such as cadmium (Cd) which are shown to have...

Date: 2024   |   Origin: Scientific Letters

The impact of psychostimulants on central and peripheral neuro-immune regulatio...

Bravo, Joana; Magalhães, Catarina; Andrade, Elva B.; Magalhães, Ana; Summavielle, Teresa

It is now well-accepted that psychostimulants act on glial cells causing neuroinflammation and adding to the neurotoxic effects of such substances. Neuroinflammation can be described as an inflammatory response, within the CNS, mediated through several cytokines, reactive oxygen species, chemokines and other inflammatory markers. These inflammatory players, in particular cytokines, play important roles. Several...


Cadmium effects on net N2O production by the deep-sea isolate Shewanella loihic...

Pizarro, Leonor; Magalhães, Catarina; Almeida, C. Marisa R.; Carvalho, Maria de Fátima; Semedo, Miguel

Deep-sea mining may lead to the release of high concentrations of metals into the surrounding seabed, which can disturb important ecosystem functions provided by microbial communities. Among these, the production of N2O and its reduction to N2 is of great relevance since N2O is an important greenhouse gas. Metal impacts on net N2O production by deep-sea bacteria are, however, currently unexplored. Here, we eval...


Mapping human pathogens in wastewater using a metatranscriptomic approach

Carneiro, João; Pascoal, Francisco; Semedo, Miguel; Pratas, Diogo; Tomasino, Maria Paola; Rego, Adriana; Carvalho, Maria de Fátima; Mucha, Ana Paula

The monitoring of cities' wastewaters for the detection of potentially pathogenic viruses and bacteria has been considered a priority during the COVID-19 pandemic to monitor public health in urban environments. The methodological approaches frequently used for this purpose include deoxyribonucleic acid (DNA)/Ribonucleic acid (RNA) isolation followed by quantitative polymerase chain reaction (qPCR) and reverse t...


Tooth Luxation as the First Clue to an Epilepsy Diagnosis

Machado, Sara; de Freitas, Francisca Dias; Gomes Pereira, Cecília; Magalhães, Catarina


Language regression as a manifestation of epilepsy

Ferreira, Joana; Lopes, Sofia; Carmona Lopes, José; Ferreira, Cristina; Magalhães, Catarina

Introduction: Childhood epileptic encephalopathies are age-dependent brain disorders in which ictal and interictal epileptogenic activity is the apparent cause of progressive cognitive and neuro-psychological impairment. Case report: A previously healthy four-year-old boy presented to the Emergency Department with a history of receptive and expressive language regression with four days of evolution, associated ...


Exploration of the types of rarity in the Arctic Ocean from the perspective of ...

Pascoal, Francisco; Costa, Rodrigo; Assmy, Philipp; Duarte, Pedro; Magalhães, Catarina

The Arctic Ocean is facing rapid environmental changes with cascading effects on the entire Arctic marine ecosystem. However, we have a limited understanding of the consequences such changes have on bacteria and archaea (prokaryotes) at the base of the marine food web. In this study, we show how the prokaryotic rare biosphere behaves over a range of highly heterogeneous environmental conditions using 16S rRNA g...


Language regression as a manifestation of epilepsy

Ferreira, Joana; Lopes, Sofia; Lopes, José Carmona; Ferreira, Cristina; Magalhães, Catarina

Introduction: Childhood epileptic encephalopathies are age-dependent brain disorders in which ictal and interictal epileptogenic activity is the apparent cause of progressive cognitive and neuro-psychological impairment. Case report: A previously healthy four-year-old boy presented to the Emergency Department with a history of receptive and expressive language regression with four days of evolution, associated ...


Charcot-Marie-Tooth Disease - From Steppage Gait to Nephropathy

Freitas, Maria Francisca; Moreira, Liane; Vasconcelos, Sofia; Magalhães, Catarina; Tavares, Claúdia

A previously healthy nine-year-old boy was referred to the Paediatric Neurology Outpatient Clinic for steppage gait. Objectively he had claw toes and slight muscular atrophy of the intrinsic muscles of hands and feet, almost absent Achilles and Rotulian reflexes, slight retraction in dorsiflexion of the feet. Electromyography revealed severe and demyelinating sensorimotor polyneuropathy. The MLPA study of the P...


The Extremophile Endolithella mcmurdoensis gen. et sp. nov. (Trebouxiophyceae, ...

Martins, Teresa P.; Ramos, Vitor; Hentschke, Guilherme S.; Castelo-Branco, Raquel; Rego, Adriana; Monteiro, Maria; Brito, Ângela; Tamagnini, Paula

The McMurdo Dry Valleys constitute the largest ice-free region of Antarctica and one of the most extreme deserts on Earth. Despite the low temperatures, dry and poor soils and katabatic winds, some microbes are able to take advantage of endolithic microenvironments, inhabiting the pore spaces of soil and constituting photosynthesis-based communities. We isolated a green microalga, Endolithella mcmurdoensis gen....

Date: 2020   |   Origin: Biblioteca Digital do IPB

30 Results

Queried text

Refine Results

Author





















Date












Document Type






Funding



Access rights



Resource















Subject