Simon J. Ward

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Atopic dermatitis (AD) is a multifactorial, heterogenous disease that arises as a result of the interaction between both environmental and genetic factors. Changes in at least three groups of genes encoding structural proteins, epidermal proteases, and protease inhibitors predispose to a defective epidermal barrier and increase the risk of developing AD.(More)
We have identified a novel mouse Wnt genc using a cDNA differential screening procedure for retinoic-acid-induced transcripts in P19 embryonal carcinoma cells. Sequence analysis showed that this gene represents the first murine Wnt-8 (mWnt-8) gene reported to date. The expression of the mWnt-8 gene, which is rapidly induced by retinoic acid in P19 and(More)
Atopic dermatitis (AD) is a multifactorial, chronic inflammatory skin disorder in which genetic mutations and cutaneous hyperreactivity to environmental stimuli play a causative role. Genetic mutations alone might not be enough to cause clinical manifestations of AD, and this review will propose a new perspective on the importance of epidermal barrier(More)
The three murine retinoic acid receptor (RAR) genes each contain two distinct promoters which give rise to protein isoforms differing in their N-terminal regions. This study used in situ hybridization to describe the expression patterns of RARalpha1, RARalpha2, RARbeta1/3, RARbeta2/4, RARgamma1 and RARgamma2 isoform transcripts during mouse embryogenesis.(More)
Multiple paternity within broods or litters occurs in many species across a variety of social mating systems. Here we present data on paternity patterns in the agile antechinus, Antechinus agilis, a small carnivorous marsupial. In this species, all males die after a highly synchronised breeding season and females store sperm in oviducal crypts for about 2(More)
Females show mate preferences for males that are genetically dissimilar to themselves in a variety of taxa, but how females choose these males is not clearly understood. In this study, we examined the effects of olfactory stimuli and genetic relatedness on female mate choice in a small carnivorous marsupial, the agile antechinus (Antechinus agilis), during(More)
Vitamin A (retinol) is essential for normal mammalian development. However, its biological activity depends upon its conversion to retinoic acid (RA), a local mediator of cellular proliferation and differentiation. Previous studies have shown that embryonic RA is found specifically in tissues known to depend upon vitamin A for normal development and that(More)
Knock-out of the mouse RXRα gene was previously shown to result in a hypoplastic heart ventricular wall, histologically detectable in 12.5 dpc fetuses. We show here that a precocious differentiation can be detected as early as 8.5 dpc in ventricular cardiomyocytes of RXRα−/− mutants. This precocious differentiation, which is characterized by the presence of(More)
This study examines the use of a capillary shear device for the rapid characterization of human cell lines in terms of their resistance to hydrodynamic stress. An ultra scale-down (USD) approach is presented to allow the use of small quantities of cells available at the early discovery stage and to expose them to a wide range of hydrodynamic stresses. In(More)
Congenital malformations of the eye can cause blindness in children. They occur throughout the world and in most cases the aetiology is unknown. Linkage studies have largely been unsuccessful and the risk to siblings is generally low. Epidemiological and laboratory evidence support a hypothesis that there may be genetic (recessive) predisposition to the(More)