Discovery of an L-like Configuration for 3'-Fluoro-5'-norcarbonucleoside Phosphonates as Potent Anti-HIV Agents.

Recently, we reported the racemic synthesis of 3'-fluoro-5'-norcarbocyclic nucleoside phosphonates bearing adenine as the heterocyclic base. For this study, to evaluate the antiviral activity of each enantiomer, we synthesized both enantiomers, as well as their corresponding bis(POM) prodrugs. Anti-HIV-1 evaluation against the LAI strain and clinically NRTI-resistant HIV-1 strains are presented.

Incidence and risk factors of anastomotic complications after lung transplantation.

Background: Anastomotic complications are common after lung transplantation (1.4-33% of cases) and still associated with a high morbi-mortality.

Methods: The current study is a monocenter retrospective analysis of symptomatic anastomotic complications (SAC) occurring after lung transplantation between 2010 and 2016, using the macroscopic, diameter, and suture (M-D-S) classification from consensus of French experts in bronchoscopy.

Mononucleoside phosphorodithiolates as mononucleotide prodrugs.

The synthesis and in vitro anti-HIV activity of a novel series of pronucleotides are reported. These prodrugs were characterized by a phosphorodithiolate structure, incorporating two O-pivaloyl-2-oxyethyl substituents as biolabile phosphate protections. The compounds were obtained following an original one-pot three-step procedure, involving the formation of a phosphorodithioite intermediate which is in situ oxidized.

An original pronucleotide strategy for the simultaneous delivery of two bioactive drugs.

The synthesis and in vitro anti-HIV activity of a novel series of phosphoramidate pronucleotides including a S-pivaloyl-2-thioethyl (tBuSATE) group as biolabile phosphate protecting group are reported. Such constructs, obtained through different phosphorus chemistries, are characterized by the association of two different anti-HIV nucleoside analogues linked to the phosphorus atom respectively by the sugar residue and the exocyclic amino function of the nucleobase. In vitro, comparative anti-HIV evaluation demonstrates that such original prodrugs are able to allow the efficient intracellular combination release of a 5'-mononucleotide as well as another nucleoside analogue.

Celsior crystalloid cardioplegia versus standard hyperkalemic normothermic blood cardioplegia: Analysis of myocardial protection in elective mitral valve repair.

Introduction: With the increase and refinement of video assisted mitral valve surgery, cristalloïd cardioplegia started regaining popularity. The aim of our study was to evaluate the effectiveness of Celsior, a crystalloid cardioplegic solution, on myocardial protection in elective surgical mitral valve repair in comparison to blood based hyperkalemic cardioplegia.

Methods: In this observational retrospective study, all consecutive elective isolated surgical mitral valve repair where Celsior or normothermic hyperkalemic blood cardioplegia were used were included.