Publications by authors named "Jan Jager"

Patients with Sjögren syndrome (SS) experience difficulties in wearing conventional dentures. After removal of all teeth, the oral rehabilitation is challenging and time consuming using conventional treatment protocols. Although implant-retained overdentures are beneficial for this specific patient group, the average total oral rehabilitation time (TORT) usually takes at least 9 months and needs to be reduced to increase patients' quality of life (QoL).

View Article and Find Full Text PDF

We present coregistered images of tissue vasculature that allow a direct comparison between the performance of narrow-band imaging (NBI) and optical coherence tomography angiography (OCTA). Images were generated with a bimodal endomicroscope having a size of 15  ×  2.4  ×  3.

View Article and Find Full Text PDF

Disease activity of autoimmune disorders such as multiple sclerosis and its mouse model experimental autoimmune encephalomyelitis (EAE) is temporarily suppressed by pregnancy. However, whether disease amelioration is due to nonspecific immunomodulation or mediated by Ag-specific regulation of disease-causing conventional T cells (Tcon) and immunosuppressive regulatory T cells (Tregs) remains elusive. In the current study, we systematically analyzed changes of the TCRβ repertoire driven by EAE and pregnancy using TCR sequencing.

View Article and Find Full Text PDF

The accessibility of cost-competitive renewable materials and their application in additive manufacturing is essential for an efficient biobased economy. We demonstrate the rapid prototyping of sustainable resins using a stereolithographic 3D printer. Resin formulation takes place by straightforward mixing of biobased acrylate monomers and oligomers with a photoinitiatior and optical absorber.

View Article and Find Full Text PDF

Objective: This aimed to assess the potential role of chronic stress in saliva secretion, xerostomia, and oral health in a population attending a saliva clinic.

Materials And Methods: Data of 114 patients who met the inclusion criteria and completed all questionnaires were analyzed in this study. Participants completed several validated questionnaires, including the Perceived Stress Scale, the Oral Health Impact Profile (OHIP-14), Xerostomia Inventory (XI), and Bother xerostomia Index (BI).

View Article and Find Full Text PDF

To facilitate the ongoing transition toward a circular economy, the availability of renewable materials for additive manufacturing becomes increasingly important. Here, we report the successful fabrication of complex shaped prototypes from biobased acrylate photopolymer resins, employing a commercial stereolithography apparatus (SLA) 3D printer. Four distinct resins with a biobased content ranging from 34 to 67% have been developed.

View Article and Find Full Text PDF

Multiple sclerosis (MS) is a T cell-driven inflammatory disease of the CNS. Research on T cell subsets involved in MS pathogenesis has mainly focused on classical CD4 T cells, especially Th17 cells, as they produce the proinflammatory, MS-associated cytokine IL-17. However, the abundant unconventional mucosal-associated invariant T (MAIT) cells are also able to produce IL-17.

View Article and Find Full Text PDF

Recent association studies have linked numerous genetic variants with an increased risk for multiple sclerosis, although their functional relevance remains largely unknown. Here we investigated phenotypical and functional consequences of a genetic variant in the CD226 gene that, among other autoimmune diseases, predisposes to multiple sclerosis. Phenotypically, effector and regulatory CD4(+) memory T cells of healthy individuals carrying the predisposing CD226 genetic variant showed, in comparison to carriers of the protective variant, reduced surface expression of CD226 and an impaired induction of CD226 after stimulation.

View Article and Find Full Text PDF

Objective: The German Competence Analysis Questionnaire (Kompetenzanalyseverfahren, KANN) is an external assessment tool used to determine observable personal resources (= competences) in children and adolescents. The present paper examines the validity of the KANN based on additionally collected data of behavior disorders as measured by the Child Behavior Checklist (CBCL/4-18). The main objective is to explore whether the KANN scales are able to differentiate between children and adolescents with or without internalizing and/or externalizing behavior disorders.

View Article and Find Full Text PDF