Cholesterol influences many pathways, including serving as precursor for adrenal steroidogenesis. Imbalance of cholesterol levels has been implicated in several diseases including cardiovascular diseases and its underlying pathology, atherosclerosis.

Pharmaceutical companies, governments and the general public have become increasingly aware that animal models used in drug testing lack vital aspects to serve as an accurate representation of human biology. As models of the human body should become more physiologically relevant, animal models no longer…

Promotor: Prof.dr. M. Danhof, Co-promotor: O.E. Della Pasqua

Source: Structure , Volume 22, Issue 8, pp. 1120-1139 (2014)

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.

Model based approaches, integrating physiological parameters or linking exposure with response, are powerful tools to quantify and evaluate the impact of genetic differences that are reflected as variability of drug exposure and/or clinical response(s). This thesis “Pharmacogenomics in Drug Development: …

In this thesis, we will utilize embryonic zebrafish tumour models to understand the interaction between engrafted human cancer cells and macrophages from the host, test drug administration modalities and anti-cancer efficacies of newly-developed PDT and PACT compounds, and test a light-triggered liposomal…

We describe certain birational modifications of nodal relative curves over a regular base of arbitrary dimension.

Promotor: Prof.dr. M. Danhof, Co-Promotor: J. de Jongh

Barrier function is the natural role of the skin. The lipid matrix present in the outermost layer of the skin, the stratum corneum is important for this function.

Dr. Irma Mosquera Valderrama onderzoekt in haar ERC-project de rol van de OESO (Organisatie voor Economische Samenwerking en Ontwikkeling) en de EU bij de totstandkoming van internationale fiscale wetgeving en streeft ernaar voorwaarden te scheppen waaronder zowel ontwikkelde landen als ontwikkelingslanden…

This thesis focuses on the role of chemokine receptors CXCR3 and CCR2 in the inflammatory process and infection control using the zebrafish model.

Promotor: M. Ubbink, Co-promotor: G. Siegal

We study the interplay of topology and geometry with chirality for several passive and active systems, employing both analytical and numerical methods.

The deeper understanding of an organism's pathology is important for developing treatments. Over centuries of systematic research, clinical researchers have demonstrated that the more information they acquire about the cellular properties and their organisation in the tissue, the better they can understand…

Several techniques are explored for going beyond the born-oppenheimer static surface model for molecule-surface reactions.

In design optimization problems, engineers typically handcraft design representations based on personal expertise, which leaves a fingerprint of the user experience in the optimization data. Thus, learning this notion of experience as transferrable design features has potential to improve the performance…

Multicellular giant algae Chara species have been widely used in physiological studies for decades.

Beginnend docenten hebben vaak moeite met het maken van activerende lessen. In dit onderzoek wordt gekeken hoe het didactisch bouwstenen model hen een helpende hand kan bieden bij het leren ontwerpen van lessen.

Uncertainty and noise are frequently-encountered obstacles in real-world applications of numerical optimization. The practice of optimization that deals with uncertainties and noise is commonly referred to as robust optimization.

Promotor: Prof.dr. M.K. Richardson

Promotie

Wiskunde en Natuurwetenschappen, Centrum voor Milieuwetenschappen Leiden (CML)

β-Lactamases are enzymes that can break down β-lactam substrates, such as antibiotics, preventing the use of these antibiotics for the treatment of various infectious diseases. However, some compounds, β-lactamase inhibitors, can block these enzymes allowing for possible treatments using a combination…

Promotor: S.J. Edixhoven, L.D.J. Taelman

This thesis focuses on important life history traits and their trade-offs using two hexapod models. Particularly, the trade-off between immune defense and embryonic developmental speed is a central theme of this study.

Promotores: H. Schiessel, G.T. Barkema

In the first part, we introduce a new condition, called toric-additivity, on a family of abelian varieties degenerating to a semi-abelian scheme over a normal crossing divisor.

Prostate cancer (PCa) is one of the most prevalent cancer in males.

In this thesis, topics relating to the optimization of high-throughput pipelines used for imaging are discussed. In particular, different levels of implementation, i.e., conceptual, software, and hardware, are discussed and the thesis outlines how advances on each level need to be made to make gains…

This thesis introduces the concept of

In dit artikel vatten Kristin Makszin en Achim Kemmerling bewijs samen over hoe het VK en de VS leren van het Chileense pensioenmodel, maar beide landen slagen er niet in krediet toe te kennen of de lessen te vervormen.

Kros

Cardiovascular diseases are still a major concern for the global health.

Foundation for Industry (FIND) brengt 5 universiteiten met 10 laboratoria, 11 Nederlandse bedrijven, variërend van start-ups tot multinationals, en 2 kennisinstellingen samen om de weg te bereiden voor een nieuwe golf van AI-gebaseerde automatisering die de Nederlandse industrie helpt haar internationale…

Hot astrophysical plasma is ubiquitous in the Universe, from comets in our Solar system to the largest scale structures -- the cosmic web filaments. These hot plasmas, with the temperature of a few millions of degrees, are often observed in the X-ray wavelength range.

Op 6 juni 2019 verdedigde Edward Donelan zijn proefschrift 'Regulatory Management Policies and a Universal Model for Public Policy Making, Legislative Drafting and Managing Stocks of Legislation'. Het promotieonderzoek is begeleid door promotor prof. W.J.M. Voermans.

Promotor: A.H. Meijer, Co-promotor: B.E. Snaar-Jagalska

Promotor: J. A. Bouwstra

Chapter 1,contains the numerical verification of the Birch and Swinnerton-Dyer conjecture for hundreds of Jacobians of hyperelliptic curves of genus 2, 3, 4 and 5.

Fundamental understanding of molecular reactions on metal surfaces is important for improving heterogeneous catalysis.

With increasing carbon dioxide levels in the atmosphere and their detrimental effect on the global climate, modern society needs to push for more renewable energy sources. Storing widely accessible and abundant solar energy in chemical bonds in the form of molecular fuel via artificial photosynthesis…

Wiskunde en Natuurwetenschappen, Leiden Academic Centre for Drug Research (LACDR)

De discussie over inzetbaarheid van afgestudeerden in het hoger onderwijs bestaat al een aantal jaren. Toch staan ​​universiteiten nog steeds voor de uitdaging om afgestudeerden te leveren die aan de verwachtingen van het bedrijfsleven kunnen voldoen.

Elektrische signalen bewegen als een golf door onze zenuwbanen. De wiskundige modellen voor deze bewegingen konden nog niet alle biologische eigenschappen van de zenuwbanen goed beschrijven. Promovendus Willem Schouten-Straatman bracht hier verandering in door de bestaande modellen te verbeteren. 'Ik…

A common method to solve expensive function evaluation problem is using Bayesian Global Optimization, instead of Evolutionary Algorithms.