Normothermic regional and ex-situ perfusion reduces Postreperfusion syndrome in donation after circulatory death liver transplantation: a retrospective comparative study.

In controlled donation after circulatory death (DCD) liver transplantation, ischemia-reperfusion injury is linked to post-reperfusion syndrome (PRS), acute kidney injury (AKI), and early allograft dysfunction (EAD). Normothermic regional perfusion (NRP) and normothermic machine perfusion (NMP) are techniques that mitigate ischemic injury and associated complications. In this single centre retrospective study, we compared early transplant outcomes of DCD livers undergoing direct procurement (DP) and static cold storage (DCD-DP-SCS), NRP procurement with SCS (DCD-NRP-SCS), or DP with NMP (DCD-DP-NMP).

Evolution of morphological changes in donor livers undergoing normothermic machine perfusion.

Aims: There is a shortage of livers for transplantation in the United Kingdom; despite this, more than a fifth of those retrieved are not transplanted. Normothermic machine perfusion (NMP) allows a functional assessment of marginal organs using biochemical parameters. This study describes the histological changes in livers undergoing NMP.

SNM1A is crucial for efficient repair of complex DNA breaks in human cells.

DNA double-strand breaks (DSBs), such as those produced by radiation and radiomimetics, are amongst the most toxic forms of cellular damage, in part because they involve extensive oxidative modifications at the break termini. Prior to completion of DSB repair, the chemically modified termini must be removed. Various DNA processing enzymes have been implicated in the processing of these dirty ends, but molecular knowledge of this process is limited.

Electroanatomical adaptations in the guinea pig heart from neonatal to adulthood.

Aims: Electroanatomical adaptations during the neonatal to adult phase have not been comprehensively studied in preclinical animal models. To explore the impact of age as a biological variable on cardiac electrophysiology, we employed neonatal and adult guinea pigs, which are a recognized animal model for developmental research.

Methods And Results: Electrocardiogram recordings were collected in vivo from anaesthetized animals.

Cell-active small molecule inhibitors validate the SNM1A DNA repair nuclease as a cancer target.

The three human SNM1 metallo-β-lactamase fold nucleases (SNM1A-C) play key roles in DNA damage repair and in maintaining telomere integrity. Genetic studies indicate that they are attractive targets for cancer treatment and to potentiate chemo- and radiation-therapy. A high-throughput screen for SNM1A inhibitors identified diverse pharmacophores, some of which were shown by crystallography to coordinate to the di-metal ion centre at the SNM1A active site.