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Background: Biomarkers serve as a quantitative measure of brain injury and may predict cognitive outcome after cardiac arrest. This study investigates the association and predictive accuracy of acute changes in Alzheimer disease-associated biomarkers to cognitive outcome in cardiac arrest survivors.Methods: Retrospective study of the Target Temperature Management after Out-of-Hospital cardiac arreBackground: Biomarkers serve as a quantitative measure of brain injury and may predict cognitive outcome after cardiac arrest. This study investigates the association and predictive accuracy of acute changes in Alzheimer disease-associated biomarkers to cognitive outcome in cardiac arrest survivors.Methods: Retrospective study of the Target Temperature Management after Out-of-Hospital cardiac arre

Microplastics (MPs) in biosolids used as soil amendments are of growing concern. The purpose of this study was to improve the characterization of MPs in complex biosolid matrices by optimizing sample preparation for morphological and chemical analyses with different spectroscopic techniques. We compared extraction procedures involving Fenton oxidation (F), Fenton plus sodium dodecyl sulfate (SDS),

Stem cells are key to human tissue maintenance. Because tissue maintenance allows us to live and reproduce, stem cell control is fundamental for animal life and evolution. A team of researchers set out to explore the origins of transcription factors at the core of the induction and the maintenance of stemnss. They focus on the conservation of the Sry-related box 2 (Sox2) and the octamer-binding tr

Abstract: Alterations in the levels and activity of Ca2+/calmodulin‐dependent protein kinase II (CaM‐kinase II) were studied in the rat hippocampus during and after insulin‐induced hypoglycemic coma. A permanent loss of CaM‐kinase II immunohistostaining in the neuronal layer begins at 10 min of isoelectricity in the tip of the dentate gyrus and at 30‐min isoelectricity in the CA1 region. The reduc

Following stress such as heat shock or transient cerebral ischemia, global brain protein synthesis initiation is depressed through modulation of eucaryotic initiation factor (eIF) activities, and modification of ribosomal subunits. Concomitantly, expression of a certain class of mRNA, heat-shock protein (HSP) mRNA, is induced. Here we report that the activity of eucaryotic initiation factor-2 (eIF

Binding of 125I-insulin-like growth factor-1 (125I-IGF-1) to rat brain slices was studied after 15 min of two-vessel occlusion ischemia and 1 h to 4 days of recirculation. Ligand binding in the hippocampus increased at 6 h post ischemia in the CA1 and CA3 regions and the dentate gyrus, suggesting that the IGF-1 receptors were up-regulated, while no change was seen in neocortex and striatum. Intrac

Changes in ligand binding to adrenoceptors ([3H]prazosin to α1-receptors, [3H]idazoxan to α2-receptors and [125I]cyanopindolol to β-receptors) following transient cerebral ischemia were investigated using autoradiographic methods. The binding was quantified in brain sections from control rats, rats subjected to 15 min of 2-vessel occlusion ischemia, and rats with recirculation times of 1 h, 1 week

Rats were exposed to insulin-induced hypoglycemia resulting in periods of cerebral isoelectricity ranging from 10 to 60 min. After recovery with glucose, they were allowed to wake up and survive for 1 week. Control rats were recovered at the stage of EEG slowing. After sub-serial sectioning, the number and distribution of dying neurons was assessed in each brain region. Acid fuchsin was found to s

The protein parkin, encoded by the PARK2 gene, is vital for mitochondrial homeostasis, and although it has been implicated in Parkinson’s disease (PD), the disease mechanisms remain unclear. We have applied mass spectrometry-based proteomics to investigate the effects of parkin dysfunction on the mitochondrial proteome in human isogenic induced pluripotent stem cell-derived neurons with and withou

The function of astrocytes intertwines with the extracellular matrix, whose neuron and glial cell-derived components shape neuronal plasticity. Astrocyte abnormalities have been reported in the brain of the mouse model for fragile X syndrome (FXS), the most common cause of inherited intellectual disability, and a monogenic cause of autism spectrum disorder. We compared human FXS and control astroc

The immersion freezing ability of soot particles has in previous studies been reported in the range of low/insignificant to very high. The aims of this study were to: (i) perform detailed physico-chemical characterisation of freshly produced soot particles with very different properties, (ii) investigate the immersion freezing ability of the same particles, and (iii) investigate the potential link

BACKGROUND: Covid-19 transmission via exhaled aerosol particles has been considered an important route for the spread of infection, especially during super-spreading events involving loud talking or singing. However, no study has previously linked measurements of viral aerosol emissions to transmission rates.METHODS: During Feb-Mar 2021, covid-19 cases that were close to symptom onset were visited

BackgroundThe Dyspnoea-12 (D12) and Multidimensional dyspnea profile (MDP) are commonly used instruments for assessing multiple dimensions of breathlessness but have not been validated in older people in the population. The aim of this study was to validate the D12 and MDP in 73-years old men in terms of the instruments’ underlying factor structures, internal consistency, and validity.MethodsA pos

Aquaporin-4 (AQP4) is the predominant water channel in the brain; it is enriched in astrocytic foot processes abutting vessels where it is anchored through an interaction with the dystrophin-associated protein (DAP) complex. Enhanced expression with concomitant mislocalization of AQP4 along astrocyte plasma membranes is a hallmark of several neurological conditions. Thus, there is an urgent need t

BackgroundCurrent guidelines from Scandinavian Neuro Committee mandate a 24-hour observation for head trauma patients on anticoagulants, even with normal initial head CT scans, as a means not to miss delayed intracranial hemorrhages. This study aimed to assess the prevalence, and time to diagnosis, of clinically relevant delayed intracranial hemorrhage in head trauma patients treated with oral ant

We previously showed that SerpinE2 and the serine protease HtrA1 modulate fibro-blast growth factor (FGF) signaling in germ layer specification and head-to-tail development of Xenopus embryos. Here, we present an extracellular proteolytic mechanism involving this serpin-protease system in the developing neural crest (NC). Knockdown of SerpinE2 by injected antisense morpholino oligonucleotides did

BACKGROUND AND OBJECTIVES: Polymorphic molecules expressed on the surface of certain blood cells are traditionally categorized as blood groups and human platelet or neutrophil antigens. CD36 is widely considered a platelet antigen (Nak a ) and anti-CD36 can cause foetal/neonatal alloimmune thrombocytopenia (FNAIT) in CD36-negative pregnant women. CD36 is used as a marker of differentiation in ear

This essay explores the lived experiences of parents of children with neurodevelopmental disabilities in relation to institutional interactions. Using a narrative inquiry approach (Clandinin & Connelly, 2000), 13 semi-structured interviews were conducted and analysed to investigate emotional and moral dimensions of the participants' stories. Drawing on Kittays (1999) ethic of care, the