We found that pigmented and amelanotic (MPNST-like) melanomas arise in the genetically engineered BRAF(V600E)-Cdk4(R24C) mouse melanoma model and even in the same animal.
A Preclinical Model of Malignant Peripheral Nerve Sheath Tumor-like Melanoma Is Characterized by Infiltrating Mast Cells.
Specimen part
View SamplesWe evaluated cutaneous contact hypersensitivity (CHS) in Cnr1-/-/Cnr2-/- animals using the obligate contact allergen 2,4-dinitrofluorobenzene (DNFB), which generates a specific cutaneous T-cell mediated allergic response upon repeated allergen contact. Allergic contact dermatitis affects about 5% of men and 11% of women in industrialized countries and is one of the leading causes for occupational diseases. In an animal model for cutaneous contact hypersensitivity we show that mice lacking both known cannabinoid receptors display exacerbated allergic inflammation. In contrast, fatty acid amide hydrolase deficient mice, which have increased levels of the endocannabinoid anandamide, displayed reduced allergic responses in the skin. Cannabinoid receptor antagonists exacerbated whereas receptor agonists attenuated allergic inflammation. These results demonstrate a protective role of the endocannabinoid system in contact allergy in the skin, and suggest a novel target for therapeutic intervention.
Attenuation of allergic contact dermatitis through the endocannabinoid system.
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View SamplesPatients with Klinefelter Syndrome have the karyotype 47,XXY. These men are suffering from hypergonadotropic hypogonadism and are infertile. It is debated whether the different hormonal constitution observed in these patients or different gene expression
Gene expression patterns in relation to the clinical phenotype in Klinefelter syndrome.
Sex, Specimen part
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