Aortic valve replacement with the perceval S bioprosthesis: single-center experience in 143 patients.

Background And Aim Of The Study: Aortic stenosis (AS) is the most frequent heart valve disease in western countries, and its prevalence increases with age. Sutureless valves have recently become available that allow the surgical procedures to be shortened. The study aim was to assess clinical outcome after sutureless aortic valve replacement (SAVR) performed with the Perceval S bioprosthesis at the authors' institution.

Multiple resistance traits control Plum pox virus infection in Arabidopsis thaliana.

Twelve Arabidopsis accessions were challenged with Plum pox potyvirus (PPV) isolates representative of the four PPV strains. Each accession supported local and systemic infection by at least some of the PPV isolates, but high variability was observed in the behavior of the five PPV isolates or the 12 Arabidopsis accessions. Resistance to local infection or long-distance movement occurred in about 40% of all the accession-isolate combinations analyzed.

Application of GFP-tagged Plum pox virus to study Prunus-PPV interactions at the whole plant and cellular levels.

The Sharka disease caused by the potyvirus Plum pox virus (PPV) is one of the most serious viral diseases affecting stone fruit trees. The study of PPV/Prunus interaction under greenhouse controlled conditions is space, time, labor consuming. While the PPV/Prunus interactions are now quite well known at the whole plant level, few data however are available on the interactions between the virus and the Prunus host plants at the cellular level.