Publications by authors named "Nadja Hansen"

Despite recent advances in the field of tissue engineering, the development of complex tissue-like structures in vitro is compromised by the lack of integration of a functioning vasculature. In this study, we propose a mesoscale three-dimensional (3D) in vitro vascularized connective tissue model and demonstrate its feasibility to prompt the self-assembly of endothelial cells into vessel-like structures. Moreover, we investigate the effect of perfusion on the organization of the cells.

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Background: Headache burden is substantial in idiopathic intracranial hypertension. The classification of idiopathic intracranial hypertension headache by the International Classification of Headache Disorders (ICHD) is an important tool for research and clinical purposes.

Methods: We phenotyped headaches and tested sensitivity and specificity of the ICHD-3 criteria for idiopathic intracranial hypertension headache in a prospective cohort of patients suspected of idiopathic intracranial hypertension at two tertiary headache centers.

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Background: Idiopathic intracranial hypertension (IIH) occurs more frequently in obese females of childbearing age. A link between eating disorders and poor outcome has been suggested but remains unproven.

Methods: This prospective field study at two tertiary headache centers included patients with clinically suspected IIH after standardized diagnostic work-up.

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Advanced in vitro systems such as multicellular spheroids and lab-on-a-chip devices have been developed, but often fall short in reproducing the tissue scale and self-organization of human diseases. A bioprinted artificial tumor model is introduced with endothelial and stromal cells self-organizing into perfusable and functional vascular structures. This model uses 3D hydrogel matrices to embed multicellular tumor spheroids, allowing them to grow to mesoscopic scales and to interact with endothelial cells.

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Article Synopsis
  • There is a need to enhance the diagnosis of papilledema in patients with suspected idiopathic intracranial hypertension, utilizing a new system called COMPASS, which was tested against traditional methods at a neuroophthalmology clinic.
  • The study involved comparing assessments of fundus images and visual fields between different medical professionals, including untrained and trained individuals, to measure agreement and accuracy.
  • Results indicated that COMPASS demonstrated reasonable sensitivity and moderate agreement in detecting papilledema, but showed less effectiveness in identifying visual field defects when compared to the standard OCTOPUS method.
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Background: Early 2-dose measles vaccine (MV) at 4 and 9 months of age vs. the WHO strategy of MV at 9 months of age reduced all-cause child mortality in a previous trial. We aimed to test two hypotheses: 1) a 2-dose strategy reduces child mortality between 4 and 60 months of age by 30%; 2) receiving early MV at 4 months in the presence versus absence of maternal measles antibodies (MatAb) reduces child mortality by 35%.

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We report the case of a 37-year-old male patient with chronic amphetamine abuse who presented with vertebral artery dissection. Prior to presentation, he had increased the consumption of amphetamine from 5 times a year to once every week and had used amphetamine on the day of presentation. He attended with neck pain, vertigo and coordinating difficulties of his left arm.

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In this case report we describe the presence of a dural sinus cavernosus fistula presenting with unilateral oculomotor palsy. Dural arterio-venous fistula is a rare abnormal connection between dural arteries and the venous system. Venous stasis, infarctions and intracranial haemorrhage might arise.

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Background: Measles vaccine (MV) may have non-specific beneficial effects for child health and particularly seems to prevent respiratory infections. Streptococcus pneumoniae is the leading cause of bacterial pneumonia among children worldwide, and nasopharyngeal colonization precedes infection.

Objective: We investigated whether providing early MV at 18 weeks of age reduced pneumococcal colonization and/or density up to 9 months of age.

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