Secreted Frizzled-Related Protein 1a regulates hematopoietic development in a dose-dependent manner.

Unlabelled: Hematopoietic stem and progenitor cells (HSPCs) arise only during embryonic development, and their identity specification, emergence from the floor of the dorsal aorta, and proliferation are all tightly regulated by molecular mechanisms such as signaling cues. Among these, Wnt signaling plays an important role in HSPC specification, differentiation, and self-renewal, requiring precise modulation for proper development and homeostasis. Wnt signaling is initiated when a Wnt ligand binds to cell surface receptors such as those encoded by the gene family, activating intracellular signaling pathways that regulate gene expression.

Smoking Cessation Interventions in the Lung Cancer Screening Setting: A Randomized Clinical Trial.

Importance: The optimal configuration of a smoking cessation intervention in a lung cancer screening (LCS) setting has not yet been established.

Objective: To evaluate the efficacy of 3 tobacco treatment strategies of increasing integration and intensity in the LCS setting.

Design, Setting, And Participants: In this randomized clinical trial, LCS-eligible current smokers were randomized into 3 treatments: quitline (QL), QL plus (QL+), or integrated care (IC).

Characteristics of patients enrolled in hospice presenting to the emergency department.

Objectives: Emergency Departments (EDs) frequently care for patients with life-limiting illnesses, with nearly 1 in 5 patients enrolled in hospice presenting to an ED during their hospice enrollment. This study investigates the reasons patients enrolled in hospice seek care in the ED, the interventions they receive, and their outcomes.

Methods: Multicenter, retrospective cohort study of patients enrolled in hospice who presented to an ED within a health system between 2018 and 2023.

Quitline-Based Young Adult Vaping Cessation: A Randomized Clinical Trial Examining NRT and mHealth.

Introduction: Broad-reaching, effective e-cigarette cessation interventions are needed.

Study Design: This remote, randomized clinical trial tested a mHealth program and nicotine replacement therapy (NRT) for young adult vaping cessation.

Setting/participants: Social media was used from 2021 to 2022 to recruit 508 young adults (aged 18-24 years) in the U.

Revisiting the Endoscopic Third Ventriculostomy Success Score using machine learning: can we do better?

Objective: The Endoscopic Third Ventriculostomy Success Score (ETVSS) is a useful decision-making heuristic when considering the probability of surgical success, defined traditionally as no repeat cerebrospinal fluid diversion surgery needed within 6 months. Nonetheless, the performance of the logistic regression (LR) model in the original 2009 study was modest, with an area under the receiver operating characteristic curve (AUROC) of 0.68.