Although SPT activity has not been measured in atopic dermatitis, 12 SPT is the key enzyme in ceramide synthesis, and ceramide was shown to be deficient in stratum corneum of atopic dermatitis, 7, 13 so that it may play a important role in skin.
Surprisingly, these Keap1-deficient mice also show a thicker stratum corneum epidermis, abnormal keratinization, and cornification in the esophagus and forestomach (hyperkeratosis).
The decreased stratum corneum hydration in Scd1-deficient mice has been suggested to be due to reduced glycerol content that results from diminished sebaceous gland-derived triglyceride hydrolysis [5].
The current work describes thermotropic and kinetic Fourier transform infrared (FTIR) spectroscopy studies of lipid dynamics and domain formation in normal and ceramide (CER) deficient lipid samples designed as simple models of the stratum corneum (SC).
By contrast, acid DNase activity was absent from the stratum corneum and the surface of hairs of DNase2a-deficient mice (Figure 5B).
Since the upper strata of various Permian locations tend to be relatively fossil deficient, correlation using index fossils has been difficult.
A deficient recording of episiotomies was detected in three of the private hospitals included in stratum S2, which explains the variation rate found in this group for this indicator.
For example, a study in school girls (n = 404, 48% lower socioeconomic strata) in Delhi, located at 28.38 °N, reported 91% were vitamin D deficient.
Indeed, our data indicate increased PNN surface area on neurites in Ts65Dn stratum oriens which could stabilize inhibitory interneurons and presumably increase inhibitory output leading to deficient spatial learning and memory.
To determine the contribution of DNase 2 to the DNase activity of the skin surface, extracts from the stratum corneum of the soles and from the surface of hair of DNase 2a-deficient and control mice were analyzed in an in vitro DNA degradation assay.
