Promotores: H.A. Udo De Haes, P.M. Brakefield

The progressive loss and degeneration of dopaminergic neurons is a major pathological hallmark of Parkinson's disease (PD). The onset and progression of PD can be triggered by multiple risk factors, for instance, genetic mutation, environmental exposure, and aging.

Psycholoog Bernadet Klaassens heeft een groot fMRI-onderzoek opgezet naar het effect van medicijnen op hersennetwerken bij veroudering en de ziekte van Alzheimer. Het leverde een unieke dataset op en zicht op een nieuwe methode om medicijnen te ontwikkelen voor patiënten met Alzheimer.

Up to 45% of patients with Parkinson's disease experience impulse control disorders, characterised by a loss of voluntary control over impulses, drives or temptations. This study aimed to investigate whether previously identified genetic and psychiatric risk factors interact towards the development…

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This thesis describes the design and synthesis of novel small molecules based on sulfur-containing heterocycles for the inhibition of glycosidases and glycosyltransferases related to Fabry and Pompe disease.

Within this thesis the central stage is taken by the discovery and investigation of transglycosylation of sterols. First, investigation focuses on the development of a method to accurately detect and quantify glucosylated metabolites in biological materials.

This thesis focuses on amyloid proteins, a class of proteins that convert into amyloid fibrils.

The studies described in this thesis deal with glycosidases, in particular alpha-galactosidases.

Parkinson's disease is the second most common neurodegenerative disease in the world. One of its symptoms is the loss of dopaminergic neurons in the substantia nigra pars compacta.

Thesis focused on uncovering the underlying mechanisms of the lysosomal storage disorders Gaucher's disease using chemical tools, biochemical assays and lipidomics.

According to the amyloid cascade hypothesis, accumulation of beta-amyloid (Aβ) peptides initiates the pathological cascade in Alzheimer's disease (AD).

Studying the impact of urbanisation on the respiratory health of past Dutch populations (1200-1850 CE).

The research described in this thesis centered on retaining exo-β-glucosidases implicated in health and disease, in particular the human inherited lysosomal storage disorder, Gaucher disease (GD).

In this thesis, single-cell approaches were applied to characterize the impact of aging on the immunological B cell landscape in different models of atherosclerotic cardiovascular disease, with the goal to identify and study new B cell-associated biomarkers and therapeutic targets to halt atherosclerosis…

Transplantation of labial salivary glands to the eyelids for patients with dry eye appears to give excellent results clinically.

Heart failure is a major health care problem with high mortality.

Een wereld zonder ziekte: toekomst of illusie? In ieder geval het nastreven waard, vinden ze bij Janssen, dat de mogelijkheden voor zo’n wereld daarom onderzoekt. Studenten van het Leiden Leadership Programme brachten voor het bedrijf enkele dilemma’s in kaart die daarbij een rol kunnen spelen.

Anthropogenic change is reshaping ecological systems, raising concerns about increasing transmission of infectious diseases. Among these, mosquito-borne diseases may be particularly sensitive to environmental change, as their transmission depends on vector populations.

Neurodegenerative diseases pose a large medical and societal challenge. The etiology of these diseases is still poorly understood, which makes drug discovery for these diseases difficult.

Promotor: Prof.dr. A. P. IJzerman, Co-Promotor: L.H. Heitman

The lipids in the uppermost layer of the skin, the stratum corneum (SC), play an important role in the skin barrier function. The three main SC lipid classes are ceramides (CER), cholesterol and free fatty acids.

Promotor: S.M. Verduyn Lunel

In this research project, we aimed to obtain more insight in the role of mast cells in the immune driven disorders rheumatoid arthritis and atherosclerosis.

Promotie

Lysosomal acid glucosylceramidase (GBA1) is a lysosomal enzyme that degrades glucolipids with its main substrate being glucosylceramide (GlcCer). Defects in the GBA1 gene lead to glycosphingolipidosis Gaucher disease (GD), in which the hydrolysis of GlcCer is impaired and therefore, it accumulates in…

Onderzoek in het BioTherapeutics onderzoeksprogramma is gericht op een soepelere en snellere transitie van preklinisch onderzoek naar geneesmiddelen en op het afleveren van medicijnen in het menselijk lichaam met behulp van kleine moleculen en ‘biologics’.

Machine Learning is becoming a more and more substantial technology for industry.

Advanced mass spectrometry of glycosphingolipids takes the central stage in this thesis. Investigations focus on characterization of glycosphingolipid metabolism in health and disease with emphasis to the detection and accurate quantitation of known and so far unknown glycosphingolipids and closely…

Promotor: H.S. Overkleeft, Co-promotor: M. van der Stelt

Leidse wiskundig biologen hebben een model ontwikkeld dat helpt verklaren hoe onder meer de ruggengraat en de wervels ontstaan in de embryonale ontwikkeling. Hetzelfde proces, maar dan andersom, speelt een sleutelrol bij de uitzaaiing van kanker. Publicatie in iScience.

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Promotor: G.J.B. van Ommen

In order to be able to develop effective medicine and treatments to prevent or cure autoimmune diseases or cancer we need to understand the mechanisms how they arise and what drives their course.Unravelling the fundamental molecular mechanisms influencing the onset and course of diseases such as allergies,…

Promotor: H.S. Overkleeft, J. Neefjes, Co-promotor: M. van der Stelt

Sphingolipids are important membrane compounds with a variety of functions. In mammalian cells, different enzymes are involved in the metabolism of sphingolipids, but interruption of this metabolism process leads to different diseases.

Promotor: Prof.dr. J.A. Bouwstra, Co-promotor: A. El Ghalbzouri

In this thesis, bioorthogonal chemistry is combined with correlative light-electron microscopy to selectively label and study pathogenic intracellular bacteria within the host immune cell.

Promotor: Prof.dr. R. Verpoorte, Co-Promotor: Dr. Young Hae Choi

Solute carrier (SLC) transporters are a large and diverse class of relatively understudied transmembrane proteins.

Control of infectious diseases poses continuous challenges for human health.

Hoe is het om te werken bij de Universiteit Leiden en hoe zijn wij als werkgever? Diverse medewerkers delen graag hun ervaringen. Bekijk de video’s.

This research project studies the distribution and impact of medieval malaria in the Netherlands.

The disease acute myeloid leukemia (AML) is characterized by fast progression and low survival rates.

Microglia support the central and peripheral nervous system by forming the first line of defense against hazardous events. Microglia are increasingly acknowledged as critical players in neurodegenerative diseases, highlighting them as potential therapeutic targets.

In this thesis, a system pharmacology approach, integrating metabolomics, pharmacology and chemical biology, was applied to understand and modulate the endocannabinoid system across different model systems (cells, zebrafish, mice and humans).

Antibiotica, bacteriën en resistentie zijn zeer geschikte onderwerpen voor een profielwerkstuk. Hier vind je alvast een aantal handige links.

Leidse chemisch biologen, onder leiding van dr. Mario van der Stelt, hebben stoffen ontdekt die ontstekingsprocessen in de hersenen kunnen verminderen. Daarmee is een eerste stap gezet in de ontwikkeling van potentiële geneesmiddelen voor de behandeling van hersenziekten zoals de ziekten van Alzheimer…