A phase I study of the CDK4/6 inhibitor ribociclib combined with gemcitabine in patients with advanced solid tumors.

Background: Based on preclinical data showing addition of CDK4/6 inhibitors to gemcitabine was synergistic, ribociclib was evaluated in combination with gemcitabine to determine the maximum tolerated dose (MTD) and dose limiting toxicities (DLT).

Methods: In this single arm multicohort phase I trial, we evaluated the safety and efficacy of ribociclib plus gemcitabine in patients with advanced solid tumors. Patients received gemcitabine intravenously on days 1 and 8 followed by ribociclib days 8-14, with treatment repeated every 3 weeks.

Four novel nontuberculous mycobacteria species: sp. nov., sp. nov., sp. nov. and sp. nov. revived from a historical Danish strain collection.

Four novel nontuberculous mycobacteria were discovered from a historical strain collection at the International Reference Laboratory of Mycobacteriology at Statens Serum Institut in Copenhagen, Denmark. Phylogenetic analysis combining the 16S , internal transcribed spacer and 23S elements, as well as a single-copy core-gene (, , and ) analysis of these freeze-dried mycobacteria, clinically isolated from gastric lavage samples between 1948 and 1955, showed to be associated with type strains grouping within the Terra and Fortuitum-Vaccae clade. Phenotypic characteristics, biochemical properties and fatty acid and mycolic acid profiles supported the classification as novel strains.

Percutaneous coronary intervention during the shortage of iodinated contrast.

Objectives: A recent coronavirus-related factory shutdown led to a global shortage of iodinated contrast. The authors evaluated how the contrast shortage impacted percutaneous coronary interventions (PCI).

Methods: Using a statewide database incorporating CathPCI registry data from 19 hospitals, the authors evaluated 2 time periods: pre-shortage (May 1, 2021 - April 30, 2022) and during the shortage (May 1, 2022 - October 31, 2022).

Cannulation Configuration and its Effects on Bridging to Lung Transplant: Analysis of the Extracorporeal Life Support Organization Registry.

Background: Donor stagnation and modification of lung allocation scores has resulted in a higher acuity of patient presentation prior to lung transplantation. Extracorporeal membrane oxygenation (ECMO) has been utilized as a bridge to lung transplant (BTT) although the effect of cannulation strategy on outcomes has not been well investigated. We sought to analyze contemporary data on ECMO BTT utilizing a large, international registry of patients.

Fe-Doped Ni-Based Catalysts Surpass Ir-Baselines for Oxygen Evolution Due to Optimal Charge-Transfer Characteristics.

Ni-based catalysts with Co or Fe can potentially replace precious Ir-based catalysts for the rate-limiting oxygen evolution reaction (OER) in anion-exchange membrane (AEM) electrolyzers. In this study, density functional theory (DFT) calculations provide atomic- and electronic-level resolution on how the inclusion of Co or Fe can overcome the inactivity of NiO catalysts and even enable them to surpass IrO in activating key steps to the OER. Namely, NiO resists binding the key OH* intermediate and presents a high energetic barrier to forming the O*.