Guideline-directed medical therapy rates in heart failure patients with reduced ejection fraction in a diverse cohort.

Aims: Guideline-directed medical therapy (GDMT) is recommended for all patients with heart failure with reduced ejection fraction (HFrEF). Despite this, little data exist describing GDMT use in diverse, real-world populations including the use of vasodilators, prescribed primarily to Black populations. We sought, among a diverse population of HFrEF patients, to determine (1) GDMT use rates and target dosing by medication class and (2) predictors of GDMT use and target dosing by medication class.

Left-handed use of surgical instruments: improved function through understanding instrument design.

Objective: To explain design features of scissors and surgical instruments that work against left-handed users and demonstrate how the user can adapt their technique for ambidextrous use of standard instruments.

Animals: Any species.

Methods: Standard instruments are designed for maximal efficiency with the use of a right-handed grip.

How to perform a transtracheal aspirate in horses for diagnosis of lower respiratory tract disease.

Objective: To describe indications for and demonstrate the technique to perform a transtracheal aspirate in horses. Transtracheal aspirate is indicated to collect samples for cytology and bacteriologic culture in cases of suspected pneumonia or other lower respiratory tract disease.

Animals: 1 healthy university-owned horse was used for demonstration purposes.

Acid ceramidase controls proteasome inhibitor resistance and is a novel therapeutic target for the treatment of relapsed / refractory multiple myeloma.

Multiple myeloma (MM) patients are often refractory to targeted therapies including proteasome inhibitors (PIs). Here, analysis of RNA sequencing data derived from 672 patients with newly diagnosed or relapsed/refractory disease identified the acid ceramidase, ASAH1, as a key regulator of PI resistance. Genetic or pharmacological blockade of ASAH1 remarkably restored PI sensitivity and protected mice from resistant MM progression in vivo.