Furthermore, results showed no significant difference between
locomotor rhythm pattern of males and females of this species.”
“Aim: To examine whether physical activity increases osteogenic differentiation of bone marrow mesenchymal stem cells (BMMSCs) from adult rats compared with young rats.\n\nMethods: Eighteen female Wistar rats were divided into three groups and the following cells isolated: (1) differentiated BMMSCs from young donors, (2) differentiated BMMSCs Luminespib from sedentary adult donors and (3) differentiated BMMSCs from active adult donors. We analysed MTT conversion, percentage of cells per field, mineralized nodule number and gene expression for telomerase reverse transcriptase (TERT), alkaline phosphatase, caspase 3, osteocalcin, bone sialoprotein and collagen I.\n\nResults: Telomerase reverse transcriptase expression and the percentage of cells per field in BMMSCs cultures from adult rats were smaller than those observed in young donors. However, levels of caspase 3 expression were higher in BMMSCs from adult donors (P<0.05). Despite the fact that physical activity was associated with an increase
in expression of caspase 3 (P<0.05), there was no difference in the percentage of cells per field between groups of adult BMMSCs (active or sedentary). However, physical activity increased the number of mineralized nodules and osteocalcin expression after 21days, and alkaline phosphatase expression at 7, 14 and 21days in the BMMSCs of adult donors (P<0.05). selleck However, those values were smaller when compared with young donors BMMSCs (P<0.05). Only the expression levels of alkaline CBL0137 nmr phosphatase were similar to young donors BMMSCs (P=0.05).\n\nConclusion: Physical activity increases osteogenic differentiation of
BMMSCs from adult donors but does not increase the differentiation to the levels observed in BMMSCs from young donor rats.”
“Background information. The p24 protein family plays an important but unclear role at the ER (endoplasmic reticulum)-Golgi interface. A p24 member from each subfamily (p24 alpha(3), beta(1), gamma(3) and delta(2)) is upregulated with the prohormone POMC (pro-opiomelanocortin) when Xenopus laevis intermediate pituitary melanotrope cells are physiologically activated. Here we explored the role of p24 by generating and analysing Xenopus with melanotrope cell-specific transgene expression of p24 beta(1) or p24 gamma(3), two of the p24 proteins coexpressed with POMC, and compared the results with those previously reported for the two other coexpressed p24s (p24 alpha(3) and p24 delta(2)).\n\nResults. The transgene expression of p24 beta(1) or p24 gamma(3) did not affect the endogenous p24 proteins or affected only endogenous p24 gamma(3) respectively, whereas in transgenics expressing p24 alpha(3) and p24 delta(2), the levels of all endogenous p24 proteins were strongly decreased.