Up to 50% of individuals with Parkinson's disease develop cognitive impairment over time; this study explores the use of 'practice effects' on neuropsychological tests as an early predictor of cognitive decline.

How are the epidermal lipid pathways involved in health and disease.

Leiden University researchers and their collaborators report the development of new research frameworks that use day-to-day smartphone behavior gathered from a large sample of healthy people to help understand aging, and how aging alters with epilepsy and stroke. These reports occupy two back-to-back…

New or improved treatments for chronic and acute illness.

Which brain cell does what, when Parkinson's disease arises? It won't be long before this jigsaw is solved piece by piece. Ahmed Mahfouz, computational biologist, combines bio-knowledge from Leiden with algorithms from Delft and is getting closer to finding the key.

We aim to understand ion homeostasis in the model eukaryote S. cerevisiae.

In this thesis, two potential therapeutic targets for diabetic nephropathy were dentified and investigated. First, we show that glomerular clusterin is upregulated in diabetic nephropathy and demonstrated that recombinant clusterin protein can protect the podocytes against oxidative stress in vitro.…

The skin is our natural barrier and lipids are a key part of this barrier. In the outer skin layer, the stratum corneum (SC), lipids form a densely organized structure dependent on the composition of these lipids.

Inflammatory skin diseases such as psoriasis and atopic dermatitis can severely impact both the physical and social aspect of a patient’s life. Aberrant inflammatory responses are thought to be a major causative factor in these disorders, but an abundance of different factors contribute to the development…

Inflammatory skin diseases such as psoriasis and atopic dermatitis can severely impact both the physical and social aspect of a patient’s life. Aberrant inflammatory responses are thought to be a major causative factor in these disorders, but an abundance of different factors contribute to the development…

The research described in this thesis combines the latest insights in lysosomal function with lysosome centred cell signalling.

To make the right clinical decisions or develop effective diagnostic tests and treatments, it is important to understand the underlying mechanisms of a condition or behavior.

Health workers have always sought ways to fight disease in vulnerable groups in the population. It is now clear that such research also benefits more prosperous countries. African worm infections and innovative thermometers have shown Leiden researchers how to fight diseases of affluence and keep health…

How do mycobacteria subvert the defenses of host immune cells?

The aim of this project is to explore the use of statistical interaction models to quantify cross-omics and omics-drug interactions in large-scale clinical and experimental datasets

Leiden biologists have shown that a gene present in plants, animals and yeasts does play an important role in plants, although for years the gene was considered unimportant. It turns out the gene plays a crucial role in the development of vascular tissue in plants. Publication in Nature Plants on 11…

Harvesting rice from the same field, without planting new rice plants? A discovery may bring this scenario closer. Leiden scientists have discovered a gene that allows annual plants to grow after flowering, instead of dying. Publication on 13 April in Nature Plants.

In order to gain insight into the structure and function of the molecular complexes involved in chemotaxis, we use electron cryotomography (ECT). This technique allows us to directly study microbes in their native state at resolutions capable of visualizing individual proteins.

The central question of this Vici proposal is to investigate if, and how actinobacteria exploit life without a cell wall.

Producing offspring of a crop without sowing and that is even bigger than the parent plant. According to Leiden researchers this can be achieved by overstimulating a single gene that rejuvenates cells, including bringing them back to the embryonic phase.

Overkleeft

The ideas underlying this thesis are that lipidomics may improve the diagnosis of liver metabolic diseases, and can provide further insights into the underlying pathophysiology of these diseases.

The predication of the effect (efficiency and toxicity) of a drug in a patient is very important in (i) clinical decision support and (ii) the development of novel drug treatments.

Prediction of human (CNS) target site concentrations in health and disease In the vision of Prof. de Lange we will only be able to predict human (central nervous system, CNS) target site concentrations and effects if we perform systematic, condition-dependent, integrative, and strictly quantitative…

We perform multidisciplinary research at molecular, cellular, and organismal levels of animal biology to increase fundamental understanding of health and disease.

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…

Researchers at Leiden University have made a breakthrough in the study of the hereditary Pompe disease. Together with colleagues in York, they have developed a molecule that binds to the enzyme that is key to the progress of the disease. The findings have been published in ACS Central Science.

How do plant defense genes get activated?

In this thesis, we describe the potential of cell mechanical phenotyping for immune cell characterization, diagnosis, drug testing, as well as treatment of disease.

Chronic inflammatory skin diseases such as psoriasis and atopic dermatitis affect both the physical and psychological well-being of millions of patients, leading to persistent symptoms like itchiness and sleeplessness. These conditions often result in decreased productivity and quality of life overall,…

PhD defence

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…

In April, the X-omics initiative was granted 17 million euros from the Dutch Organization for Scientific Research. The subsidy is part of the National Roadmap for large-scale scientific infrastructure, intended to build or renew large-scale research facilities. What new insights will this investment…

In this project, we will study the genetic and environmental drivers of woodiness and stem lignification at the level of plant‐to‐gene‐to‐molecule.

Farmers do not love them all. Microbes can cause tragic consequences for crops. Even the presence of just one pathogenic fungus or bacterium can drastically reduce yields. Still, there are exceptions. In that case, a pathogenic microbe is present in the soil, but does not cause any harm. Adam Ossowicki…

Always had an interest in working with children and then doing a masters focusing on the elderly. Sounds strange? Not for Medicine master's student Anna Suurmeijer. With the knowledge she gained during the waiting period for her fellowships, she developed a broader view (and not only in the medical…

The new project INFLANET will train young scientists in Europe to become experts in inflammation research. Professor Annemarie Meijer from the Institute of Biology Leiden coordinates the training.

Improving healthcare with our scientific discoveries: that is the goal of pharmaceutical research at Leiden University. And there’s a lot involved in that. Our research starts with the discovery of the effect achieved by a particular substance, and sometimes continues all the way through to the development…

We use zebrafish as a model organism to study human development and disease as well as animal welfare and environmental impact.

There are many complex links in the chain that provides patients with new drugs: from fundamental science, to clinical tests, to production. The entire chain can be found in Leiden. Leiden University, the Leiden University Medical Center (LUMC) and the businesses at the Leiden Bio Science Park (LBSP)…

Despite recent advances in medicine, many devastating disorders like cancer and cardiovascular, neurodegenerative and infectious diseases still lack effective treatments. In order to address this challenge, we, as scientists from Leiden University, joined hands in the LED3 network. LED3, for Leiden…

A Vici grant and a Science-GROOT: scientists from the Institute of Biology Leiden have been awarded prestigious grants from the Dutch Research Council (NWO). From investigating bacteria without cell walls to harnessing plants with the help of microorganisms.

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

RARE-NL, a new collaboration between university hospitals, hopes to find treatments for rare diseases. Professor Teun van Gelder is representing the LUMC in the initiative.

Researchers from Leiden University will develop a new approach to study the biomarkers of Alzeimer’s disease. This approach focusses on the molecular messengers of the cells. The project, led by Thomas Hankemeier and coordinated by Yuliya Shakalisava (Leiden Academic Centre for Drug Research, LACDR),…