This age-related adipogenic shift was accompanied by a significant reduction (p < 0.05) in Wnt signaling and a loss in osteogenic potential. In both large and small animal models, osteogenic
competence was restored to aged bone grafts by a brief incubation with the stem-cell factor Wnt3a. In addition, liposomal Wnt3a significantly reduced cell death in the bone graft, resulting in significantly more osseous regenerate in comparison with controls.
Conclusions: Liposomal Wnt3a enhances cell survival and reestablishes the osteogenic capacity of bone grafts from aged animals.
Clinical Relevance: We developed an effective, clinically applicable, regenerative medicine-based strategy for revitalizing bone grafts from aged patients.”
“Purpose: To measure epidermal thickness Cl-amidine clinical trial by using skin ultrasonography (US) in a series of healthy control subjects and obligate carriers for the worldwide most frequent form of congenital hearing loss owing to the mutated alleles of the connexin 26 gene (GJB2).
Materials and Methods: The patent for the protocol, coupled
with a new sonographic probe specifically designed to analyze epidermal thickness and a dedicated algorithm to classify individuals in groups, is pending. Institutional ethics committee approval and patient consent were obtained. After a preliminary study in 23 subjects aimed to define the best body site and instrument and protocol for Z-VAD-FMK Bcr-Abl inhibitor US, a total of 303 individuals (237 healthy subjects, 51 carriers, and 15 homozygotes) were tested at midline forehead by using a linear large-band probe with a frequency ranging from 6 to 15 MHz to determine epidermal thickness. Variance and linear regression analyses were performed. Regression coefficients were then used to
obtain measurements of thickness corrected for age and sex.
Results: GJB2 obligate carriers had a significant increase in epidermal thickness compared with control subjects. GJB2 status explains about 50.0% of this variability, whereas an additional 25.0% is explained by sex and age. Results led to the development of a possible screening protocol with a 98.0% sensitivity and 92.8% specificity in subjects aged 20-80 years, with a likelihood ratio of a positive test of 14:1. Even better results (100% sensitivity and 98.9% specificity) were obtained in an analysis of people of only reproductive age.
Conclusion: Epidermal thickening in the white population owing to GJB2 carrier status can be detected by using US. This measurement could provide a simple, noninvasive, rapid, and sensitive test for carrier screening. (C) RSNA, 2009″
“We demonstrate a novel approach for the easy fabrication of photonic crystals (PCs) with arbitrary optical lattice using two-photon holographic lithography (HL).