The propagation rate of signal along the length of the arterial tree in the cine nonenhanced MR angiograms was quantified. ResultsThe cine NEMRA sequence simultaneously provided a static MR angiogram showing vascular anatomy as well as a cine display of arterial pulse wave propagation along the entire length of the peripheral arteries. Multi-shot cine NEMRA improved temporal resolution and reduced image artifacts. HYPR reconstruction improved image quality when temporal reconstruction footprints shorter than 100 ms were used (P smaller than 0.001). Pulse wave propagation within the arterial tree as displayed by cine NEMRA was

slower in patients with PAD than in volunteers. ConclusionSimultaneous static and cine NEMRA of the peripheral arteries is feasible. Multi-shot acquisition and HYPR reconstruction can be used to improve arterial conspicuity and temporal resolution. Magn Reson Med 72:1079-1086, DZNeP supplier 2014. (c) 2013 Wiley Periodicals, Inc.”
“Protracted mitotic arrest leads to cell death; however, the molecular signals that link these distinct processes remain poorly understood. Here, we report that the pro-apoptotic BH3-only family member Bim undergoes phosphorylation in K562 cells following treatment with the microtubule targeting agents Taxol and Nocodazole. The phosphorylation of two Bim isoforms,

BimEL and BimL, at the mitochondria correlates with mitotic arrest and precedes selleck chemicals cell death induced by Taxol. It was also found that Bim undergoes transient phosphorylation during normal mitosis in K562 cells. In addition, siRNA silencing of Bim reduces sensitivity to Taxol-induced cell death. The transition of K562 cells from mitosis to G(1) results in the loss of BimEL and BimL phosphorylation and correlates with the degradation of cyclin B1. The Cdk1 inhibitors, RO-3306 and Purvalanol A, block Bim phosphorylation in mitotically arrested cells. Importantly,

see more it was found that cyclin B1 co-immunoprecipitates with endogenous Bim in mitotic extracts. Furthermore, active recombinant Cdk1/cyclin B1 phosphorylates BimEL and BimL in vitro, and Serine 44 on BimL has been identified as a Cdk1 phosphorylation site. Collectively, these results suggest that Cdk1/cyclin B1-dependent hyperphosphorylation of Bim during prolonged mitotic arrest is an important cell death signal.”
“BACKGROUND:\n\nHuman infections with simian foamy viruses (SFVs) have been reported after occupational and nonoccupational exposure to infected animals and their tissues, blood, and body fluids, although there is no evidence for human-to-human transmission. We previously demonstrated SFV transmission in monkeys by blood transfusion with whole blood from one donor animal that had a low neutralizing antibody (NAb) endpoint titer, whereas blood transfusion from a second donor monkey that had a high NAb titer failed to transmit virus.