5,623,995 results match your criteria: "USA; Howard Hughes Medical Institute. Electronic address: johannes_walter@hms.harvard.edu.[Affiliation]"

A successful mitosis-to-meiosis transition in germ cells is essential for fertility in sexually reproducing organisms. In mice and humans, it is established that expression of STRA8 is critical for meiotic onset in both sexes. Here we show that BMP signalling is also essential, not for STRA8 induction but for correct meiotic progression in female mouse fetal germ cells.

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Ecological Drivers of Evolution of Swine Influenza in the United States: A Review.

Emerg Microbes Infect

January 2025

Center for Influenza and Emerging Diseases, University of Missouri, Columbia, MO 652011, USA.

Influenza A viruses (IAVs) pose a major public health threat due to their wide host range and pandemic potential. Pigs have been proposed as "mixing vessels" for avian, swine, and human IAVs, significantly contributing to influenza ecology. In the United States, IAVs are enzootic in commercial swine farming operations, with numerous genetic and antigenic IAV variants having emerged in the past two decades.

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Tanzania mandated reporting laws aim to identify and address child abuse, yet healthcare students' awareness and reporting are limited. This study assessed training's impact on their knowledge of reporting laws and handling confidential child abuse data. The study involved 412 medical and nursing students in a randomized controlled trial (RCT), with 206 participants receiving sexual health training and a waitlist control group of equal size receiving no intervention.

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Aim: To explore migrant nurses' intrinsic and extrinsic motivations for migration and regional relocation.

Design: A qualitative descriptive study.

Methods: Semi-structured interviews were conducted among 17 migrant nurses working in a hospital in regional Australia.

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BI 1703880, a novel STimulator of INterferon Genes (STING) agonist, has demonstrated preclinical antitumor activity. As STING activation can upregulate programmed death ligand 1 and human leukocyte antigen in tumor cells, a combination of BI 1703880 and an anti-programmed cell death protein 1-antibody, such as ezabenlimab, may improve efficacy. This first-in-human phase Ia study (NCT05471856) is evaluating BI 1703880 plus ezabenlimab in patients with advanced solid tumors.

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Catatonia may manifest as an independent entity or as a feature of a neuropsychiatric or medical illness. While electroconvulsive therapy (ECT) is the gold standard treatment for catatonia, it is typically administered if the patient's symptoms fail to respond to benzodiazepines. We describe the case of a 22-year-old male with Budd Chiari induced cirrhosis and no prior psychiatric history, who presented with symptoms of psychosis and hepatic encephalopathy, was treated in the ICU for multi-factorial delirium, developed symptoms of catatonia that failed to respond to lorazepam, ultimately requiring ECT with a favorable response.

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Background: LIGHT (oLaparib In HRD-Grouped Tumor types; NCT02983799) prospectively evaluated olaparib treatment in patients with platinum-sensitive relapsed ovarian cancer (PSROC) assigned to cohorts by known BRCA mutation (BRCAm) and homologous recombination deficiency (HRD) status: germline BRCAm (gBRCAm), somatic BRCAm (sBRCAm), HRD-positive non-BRCAm, and HRD-negative. At the primary analysis, olaparib treatment demonstrated activity across all cohorts, with greatest efficacy in terms of objective response rate and progression-free survival observed in the g/sBRCAm cohorts. The authors report final overall survival (OS).

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The adult mammalian testis is filled with seminiferous tubules, which contain somatic Sertoli cells along with germ cells undergoing all phases of spermatogenesis. During spermatogenesis in postnatal mice, male germ cells undergo at least 17 different nomenclature changes as they proceed through mitosis as spermatogonia (=8), meiosis as spermatocytes (=6), and spermiogenesis as spermatids (=3) [1-6]. Adding to this complexity, combinations of germ cells at each of these stages of development are clumped together along the length of the seminiferous tubules.

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Background: Electrographic flow (EGF) mapping allows for the visualization of global atrial wavefront propagations. One mechanism of initiation and maintenance of atrial fibrillation (AF) is stimulation from EGF-identified focal sources that serve as driver sites of fibrillatory conduction. Electrographic flow consistency (EGFC) further quantifies the concordance of observed wavefront patterns, indicating that a healthier substrate shows more organized wavefront propagation and higher EGFC.

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Introduction: Several reviews have highlighted that the Patient-Generated Subjective Global Assessment (PG-SGA) is the best diagnostic tool for assessing nutritional status in cancer patients. However, previous meta-analyses summarizing the prevalence of malnutrition and overall survival in patients with gastrointestinal (GI) cancer are quite limited. This study aims to determine the overall prevalence and association between malnutrition, as defined by the PG-SGA, and mortality in adults with GI cancer.

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Background: Calf muscle weakness is a common symptom in slowly progressive neuromuscular disorders that lead to walking problems like instability and increased walking effort. The mainstay of treatment to improve walking in this population is the provision of ankle-foot-orthoses (AFOs). Since we are not aware of an up-to-date and complete overview of the effects of AFOs used for calf muscle weakness in slowly progressive neuromuscular disorders, we reviewed the evidence for the effectiveness of AFOs to improve walking in this patient group, in order to support clinical decision-making.

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Background: Cancer-associated cachexia can inhibit immune checkpoint inhibitor (ICI) therapy efficacy. Cachexia's effect on ICI therapy has not been studied in large cohorts of cancer patients aside from lung cancer. We studied associations between real-world routinely collected clinical cachexia markers and disability-free, hospitalization-free and overall survival of cancer patients.

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Phosphatidylethanolamine (PE) is a ubiquitous lipid species in higher eukaryotes. Here, we synthesized a multifunctionalized PE derivative (1) designed to identify PE-binding proteins in intact cells through photo-crosslinking and subsequent isolation and proteomic analysis of the PE-protein conjugates. We show that the tool is also useful for tracking PE translocation to mitochondria after uncaging.

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Background: Skin aging is inevitable. Wrinkles, skin texture abnormalities, senile hyperpigmentation, loss of skin tone, dryness, atrophy, and telangiectasias represent some of the hallmarks of aged skin. Skin rejuvenation can be addressed by topical therapies, such as topical retinoids and antioxidants or physical modalities with energy-based devices, all providing acceptable outcomes.

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Mathematical models of viral dynamics are crucial in understanding infection trajectories. However, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) viral load data often includes limited sparse observations with significant heterogeneity. This study aims to: (1) understand the impact of patient characteristics in shaping the temporal viral load trajectory and (2) establish a data collection protocol (DCP) to reliably reconstruct individual viral load trajectories.

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Children diagnosed with autism spectrum disorder are at high risk of being bullied, but research on teaching children with autism self-protection skills for bullying situations is scant. We taught five children self-protection skills for two types of bullying (threats and unkind remarks) and consecutive bullying occurrences. We first evaluated behavioral skills training and a textual prompt to teach children to report threats of physical or material harm, provide a disapproving statement after a first unkind remark, and occupy themselves with an activity away from a bully after a second unkind remark.

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This is a protocol for a Cochrane Review (diagnostic). The objectives are as follows: To determine the diagnostic accuracy of transtracheal ultrasound for detecting endotracheal intubation in adult patients. Secondary objectives Secondary objectives include assessing the diagnostic accuracy of transtracheal ultrasound amongst the following subgroups: setting (e.

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As the clinical applicability of peripheral nerve stimulation (PNS) expands, the need for PNS-specific safety criteria becomes pressing. This study addresses this need, utilizing a novel machine learning and computational bio-electromagnetics modeling platform to establish a safety criterion that captures the effects of fields and currents induced on axons. Our approach is comprised of three steps: experimentation, model creation, and predictive simulation.

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Introduction: The Virginia Memory Project (VMP) is a statewide epidemiological registry for Alzheimer's disease and related disorders (ADRD) and other neurodegenerative conditions. It aims to support dementia research, policy, and care by leveraging the Centers for Disease Control (CDC) Healthy Brain Initiative (HBI) Roadmap.

Methods: To capture comprehensive data, the VMP integrates self-enrollment and automatic enrollment using Virginia's All-Payer Claims Database (APCD).

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Prognostic Value of D-Dimer in Acute Type A Aortic Dissection and Intramural Hematoma: Observations from the Acute Aortic Syndrome Group of the Registry of Acute Non-Traumatic Chest Pain in China.

J Am Heart Assoc

January 2025

Department of Cardiovascular Surgery, Beijing Anzhen Hospital, Capital Medical University, and The Key Laboratory of Cardiovascular Remodeling-related Diseases, Ministry of Education, and Beijing Institute of Heart Lung and Blood Vessel Disease Beijing China.

Background: Acute type A aortic dissection (AAD) and acute type A intramural hematoma (AIMH) are life-threatening conditions with high mortality rates, and prognostic indicators are critical for guiding urgent treatment decisions. We assessed the prognostic significance of admission D-dimer levels in patients with AAD and AIMH.

Methods And Results: The prospective, multicenter, observational study in China recruited participants from 2013 to 2019.

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