Publications by authors named "Lafleur L"

Background: Although evidence supports the improved safety profile of direct oral anticoagulants (DOACs) over warfarin (WF), outcomes among elderly traumatic brain injury (TBI) patients on this regimen remain unclear. This study describes the association between anticoagulation status (DOAC vs. WF use) and the rates of occurrence of intracranial hemorrhage (ICH), hematoma progression, need for surgical intervention and mortality in elderly TBI cases.

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In 2021, about 75,000 persons in Germany died unnaturally or due to unexplained reasons. As a consequence, there are difficulties in more precisely identifying the time, cause and circumstances of death. Nevertheless, clarification is crucial not only from the clinical perspective, but these data are of considerable importance in the context of investigative procedures as they can be used to answer numerous legally relevant questions.

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Application of transcranial alternating current stimulation (tACS) is thought to modulate ongoing brain oscillations in a frequency-dependent manner. However, recent studies report various and sometimes inconsistent results regarding its capacity to induce changes in cortical activity beyond the stimulation period. Here, thirty healthy volunteers participated in a randomized, cross-over, sham-controlled, double-blind study using EEG to measure the offline effects of tACS on alpha and beta power.

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Nucleic acid amplification test (NAAT)-based point-of-care (POC) devices are rapidly growing for use in low-resource settings. However, key challenges are the ability to store the enzyme-based reagents in dry form in the device and the long-term stability of those reagents at elevated temperatures, especially where ambient temperatures could be as high as 45 °C. Here, we describe a set of excipients including a combination of trehalose, polyethylene glycol and dextran, and a method for using them that allows long-term dry storage of enzyme-based reagents for an isothermal strand displacement amplification (iSDA) reaction in a porous matrix.

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Background: Art-based activities like painting workshops demonstrated health benefits in older individuals living in home care facilities. Few studies examined the effects of painting workshops in geriatric inpatients.

Aim: The study aims to examine whether the participation in painting workshops performed in patients admitted to a geriatric acute care ward reduced the number of medications taken daily, use of psychoactive medications, the length of stay and inhospital mortality.

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Alpha (8-12 Hz) and beta (13-30 Hz) oscillations are believed to be involved in motor control. Their modulation with transcranial alternating current stimulation (tACS) has been shown to alter motor behavior and cortical excitability. The aim of the present study was to determine whether tACS applied bilaterally over sensorimotor cortex at 10 Hz and 20 Hz modulates interhemispheric interactions and corticospinal excitability.

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Background: c-MET protein overexpression has been proposed as a biomarker in non-small cell lung cancer (NSCLC), albeit its role in the clinical setting has not been firmly established yet.

Patients And Methods: We designed a retrospective cohort study, consisting of 725 patients with surgically removed NSCLC. Immunohistochemistry (IHC) was conducted in tissue microarrays (TMA) from lung tumors and healthy tissue.

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Humans have a natural tendency towards symmetrical movements, which rely on a distributed cortical network that allows for complex unimanual movements. Studies on healthy humans using rTMS have shown that disruption of this network, and particularly the dorsal premotor cortex (dPMC), can result in increased physiological mirror movements. The aim of the present set of experiments was to further investigate the role of dPMC in restricting motor output to the contralateral hand and determine whether physiological mirror movements could be decreased in healthy individuals.

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The prototype demonstrated here is the first fully integrated sample-to-result diagnostic platform for performing nucleic acid amplification tests that requires no permanent instrument or manual sample processing. The multiplexable autonomous disposable nucleic acid amplification test (MAD NAAT) is based on two-dimensional paper networks, which enable sensitive chemical detection normally reserved for laboratories to be carried out anywhere by untrained users. All reagents are stored dry in the disposable test device and are rehydrated by stored buffer.

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Since the initial demonstration of linear effects of stimulation duration and intensity on the strength of after-effects associated with transcranial direct current stimulation (tDCS), few studies have systematically assessed how varying these parameters modulates corticospinal excitability. Therefore, the objective of this study was to systematically evaluate the effects of anodal tDCS on corticospinal excitability at two stimulation intensities (1 mA, 2 mA) and durations (10 min, 20 min), and determine the value of several variables in predicting response. Two groups of 20 individuals received, in two separate sessions, 1 and 2 mA anodal tDCS (left primary motor cortex (M1)-right supra-orbital montage) for either 10- or 20-min.

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This study sought to identify conditions under which parents' monitoring behaviors are most strongly linked to adolescents' negative reactions (i.e., feelings of being controlled and invaded).

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Purpose: The aim of the present study was to assess, in healthy individuals, the impact of M1-M1 tDCS on primary motor cortex excitability using transcranial magnetic stimulation and sensorimotor metabolite concentration using 1H-MRS.

Methods: For both experiments, each participant received the three following interventions (20 min tDCS, 1 mA): left-anodal/right-cathodal, left-cathodal/right-anodal, sham. The effects of tDCS were assessed via motor evoked potentials (experiment 1) and metabolite concentrations (experiment 2) immediately after and 12 minutes following the end of stimulation and compared to baseline measurement.

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Background: Understanding how different brain regions interact with one another is at the heart of current endeavors in cognitive and basic neuroscience. Unlike most neuroimaging techniques, transcranial magnetic stimulation (TMS) allows the establishment of causal relationships in the study of the functional architecture of the human brain. While this tool is increasingly used to probe the functional and causal nature of the associations between brain regions, a comprehensive guide documenting the various existing stimulation protocols is currently lacking, limiting its use.

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Agenesis of the corpus callosum (AgCC) is a congenital malformation that can occur in isolation or in association with other neurological conditions. Although the behavioral manifestations associated with AgCC have been widely studied, the effects of complete absence of the corpus callosum (CC) on cerebral cortex anatomy are still not completely understood. In this study, cortical thickness in adults with complete AgCC was compared to a group of healthy controls.

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The emergence of rapid, user-friendly, point-of-care (POC) diagnostic systems is paving the way for better disease diagnosis and control. Lately, there has been a strong emphasis on developing molecular-based diagnostics due to their potential for greatly increased sensitivity and specificity. One of the most critical steps in developing practical diagnostic systems is the ability to perform sample preparation, especially the purification of nucleic acids (NA), at the POC.

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Failure to utilize valving and automation techniques has restricted the complexity of fluidic operations that can be performed in paper microfluidic devices. We developed a toolkit of paper microfluidic valves and methods for automatic valve actuation using movable paper strips and fluid-triggered expanding elements. To the best of our knowledge, this is the first functional demonstration of this valving strategy in paper microfluidics.

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Transcranial direct current stimulation (tDCS) is a neuromodulation technique that has been increasingly used over the past decade in the treatment of neurological and psychiatric disorders such as stroke and depression. Yet, the mechanisms underlying its ability to modulate brain excitability to improve clinical symptoms remains poorly understood. To help improve this understanding, proton magnetic resonance spectroscopy ((1)H-MRS) can be used as it allows the in vivo quantification of brain metabolites such as γ-aminobutyric acid (GABA) and glutamate in a region-specific manner.

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The current study tested whether greater monitoring by mothers and greater disclosure by early adolescents was linked to greater agreement in mothers' and adolescents' reports of rule-breaking behavior. In doing so, the article demonstrated how polynomial regression analyses can be used to test hypotheses in which informant discrepancies serve as the dependent variable. Data were obtained from 218 mother-adolescent dyads (M adolescent age = 11.

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In many low resource settings multiple diseases are endemic. There is a need for appropriate multi-analyte diagnostics capable of differentiating between diseases that cause similar clinical symptoms. The work presented here was part of a larger effort to develop a microfluidic point-of-care system, the DxBox, for sample-to-result differential diagnosis of infections that present with high rapid-onset fever.

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Translation of sample preparation methods to point-of-care formats has remained a challenge. We present a plastic laminate microfluidic device for protein depletion from human plasma using ligand immobilized porous beads stored dry within a novel, pneumatically-driven mixer. The card design accelerated the protein depletion process from hours to minutes.

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Cicatricial alopecia presents a diagnostic challenge to clinicians. In particular, lesions of cutaneous sarcoidosis of the scalp may resemble discoid lupus erythematosus (DLE). We report two cases of sarcoidal alopecia originally thought to represent DLE scarring plaques of the scalp.

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The development of cutaneous cryptococcosis is extremely rare in the human immunodeficiency virus-negative population. The cutaneous manifestations vary greatly, with the rarest presenting as cellulitis. We report a unique case of a 64-year-old woman who had been on prednisone monotherapy for the treatment of myasthenia gravis and subsequently developed cryptococcal cellulitis.

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The isolation of (+)-totarol as active compound against Mycobacterium tuberculosis is reported from Chamaecyparis nootkatensis outerbark.

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This study examined two strategies for increasing the accuracy with which general education teachers implemented a peer tutoring intervention for reading comprehension. The intervention was implemented for 5 elementary school students who had been referred for consultation services. Initial implementation of the intervention by the teachers was variable, and the data exhibited a downward trend.

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This study examined the effects of reinforcement contingencies designed to increase the performance of existing reading skills as well as the effects of instruction--modeling and practice--designed to increase skill level for oral reading fluency across three levels of reading materials. Results showed that a combination of contingencies, modeling, and practice was effective in producing substantial increases in reading fluency for all participants at their assigned grade levels. These results demonstrate one strategy for experimentally determining those instructional components that are required to increase oral reading rate.

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