5,075 results match your criteria: "Indiana University.-Purdue University Indianapolis; Regenstrief Institute[Affiliation]"

Mechanotransduction pathways regulating YAP nuclear translocation under Yoda1 and vibration in osteocytes.

Bone

January 2025

Institute of Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada; Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada; Department of Mechanical and Materials Engineering, Queen's University, Kingston, ON K7L3N6, Canada. Electronic address:

Yes-associated protein (YAP) is a mechanosensitive protein crucial for bone remodeling. Although research has identified pathways and components involved in YAP regulation, the precise mechanisms of its localization during Piezo1 activation or vibration remain unclear. Piezo1, a mechanosensitive ion channel, allows calcium ions to flow into cells upon activation.

View Article and Find Full Text PDF

A multiscale inflammatory map: linking individual stress to societal dysfunction.

Front Sci

March 2024

Founder, True Health Initiative, The Health Sciences Academy, London, United Kingdom.

As populations worldwide show increasing levels of stress, understanding emerging links among stress, inflammation, cognition, and behavior is vital to human and planetary health. We hypothesize that inflammation is a multiscale driver connecting stressors that affect individuals to large-scale societal dysfunction and, ultimately, to planetary-scale environmental impacts. We propose a 'central inflammation map' hypothesis to explain how the brain regulates inflammation and how inflammation impairs cognition, emotion, and action.

View Article and Find Full Text PDF

The conductivity changes associated with optical excitations and changing temperature in cobalt valence tautomer molecular thin films were investigated. Conductance switching in the presence of illumination is observed, with occasional locking in a higher conductance state, depending on the temperature, the photon energy of the illumination, and the bias voltage. Light of sufficiently short wavelengths is needed to ensure the light enhanced conductance switching, consistent with the optical absorption, but bias voltage clearly plays a role as well.

View Article and Find Full Text PDF

Purpose: Early sexual onset contributes to poor health outcomes through the life course. We use the social behavioral model to examine the behaviors and attitudes associated with early sexual onset and the intention to delay sex in middle school youth.

Methods: Youth in rural communities with high rates of hepatitis C and HIV filled out a survey prior to implementation of an evidence-based sex education program.

View Article and Find Full Text PDF
Article Synopsis
  • Medication reconciliation is important for making sure patients are taking the right medicines, and the VA has spent a lot of money to improve technology for this.
  • The study involved talking to and watching doctors and pharmacists at four different VA hospitals to see how they use these technologies for checking medications.
  • Results showed that while many doctors found the technology helpful, they also faced challenges like confusing screens and problems with how well it worked with other systems.
View Article and Find Full Text PDF

Myosin II tension sensors visualize force generation within the actin cytoskeleton in living cells.

J Cell Sci

October 2024

Enabling Technologies Group, Sanford Research, Sioux Falls, SD 57104, USA.

Article Synopsis
  • Nonmuscle myosin II (NMII) is crucial for various cellular activities, including cell division and muscle contraction, but measuring the forces it generates in live cells has been challenging.
  • A new FRET-based tension sensor has been developed to directly measure the forces associated with NMII along the actin network, using advanced imaging techniques like FLIM-FRET.
  • The findings reveal that the forces produced by NMII isoform B (NMIIB) can vary significantly in different locations and times within the cell, suggesting this sensor could help understand the dynamics of cytoskeletal contractility in various cellular processes.
View Article and Find Full Text PDF

The Care for Child Development (CCD) program may improve child development outcomes in resource-limited settings, but has not yet been adapted to group-based settings to facilitate sustainable dissemination. In this study, we determined the acceptability and feasibility of a group-based CCD program, with evaluation of program outcomes for child development, home environment, and symptoms of maternal depression as secondary outcomes. We evaluated this adapted program using a 2 × 2 crossover-designed pilot study administered over 10 bi-weekly sessions.

View Article and Find Full Text PDF

MEF2C is a critical transcription factor in neurodevelopment, whose loss-of-function mutation in humans results in MEF2C haploinsufficiency syndrome (MHS), a severe form of autism spectrum disorder (ASD)/intellectual disability (ID). Despite prior animal studies of MEF2C heterozygosity to mimic MHS, MHS-specific mutations have not been investigated previously, particularly in a human context as hiPSCs afford. Here, for the first time, we use patient hiPSC-derived cerebrocortical neurons and cerebral organoids to characterize MHS deficits.

View Article and Find Full Text PDF

Dementia risk prediction using decision-focused content selection from medical notes.

Comput Biol Med

November 2024

Indiana University School of Medicine, 340 W. 10th St, Indianapolis, IN, 46202, USA; Regenstrief Institute, Inc., 1101 W. 10th Street, Indianapolis, IN, 46202, USA. Electronic address:

Several general-purpose language model (LM) architectures have been proposed with demonstrated improvement in text summarization and classification. Adapting these architectures to the medical domain requires additional considerations. For instance, the medical history of the patient is documented in the Electronic Health Record (EHR) which includes many medical notes drafted by healthcare providers.

View Article and Find Full Text PDF

"Picture a Scientist," a documentary featuring stories and research about bias in STEM, reached a large international audience. Yet, the extent to which this type of engaging media can impact gender bias remains unclear. In a unique collaboration between film creators and researchers, the current large-scale field studies explored whether "Picture a Scientist" functioned as an intervention and persuasive message targeting sexism in STEM.

View Article and Find Full Text PDF

In yeasts and higher eukaryotes, chromatin motions may be tuned to genomic functions, with transcriptional activation and the DNA damage response both leading to profound changes in chromatin dynamics. The RAD51 recombinase is a key mediator of chromatin mobility following DNA damage. As functions of RAD51 beyond DNA repair are being discovered, we asked whether RAD51 modulates chromatin dynamics in the absence of DNA damage and found that inhibition or depletion of RAD51 alters chromatin motions in undamaged cells.

View Article and Find Full Text PDF

Cardiomyopathy is the leading cause of death in Duchenne muscular dystrophy (DMD); however, in the mdx mouse model of DMD, the cardiac phenotype differs from that seen in DMD-associated cardiomyopathy. Although some have used pharmacologic stress to stimulate injury and enhance cardiac pathology in the mdx model, many methods lead to high mortality with variable cardiac outcomes, and do not recapitulate the structural and functional cardiac changes seen in human disease. Here, we describe a simple and effective method to enhance the cardiac phenotype model in mdx mice using advanced 2D and 4D high-frequency ultrasound to monitor cardiac dysfunction progression in vivo.

View Article and Find Full Text PDF
Article Synopsis
  • Overdose fatality review teams (OFRTs) are increasingly utilized in U.S. communities to combat the overdose epidemic, yet there is a lack of research on their effectiveness.
  • In a study analyzing recommendations from 19 county-level OFRTs in Indiana during 2022, a total of 1512 recommendations were made, with a significant portion targeting broader community issues rather than specific cases.
  • The findings emphasize the need for improved overdose prevention strategies, greater support for OFRTs, and further research to enhance their impact.
View Article and Find Full Text PDF

Sex differences in neural networks recruited by frontloaded binge alcohol drinking.

Addict Biol

September 2024

Addiction Neuroscience, Department of Psychology and Indiana Alcohol Research Center, Indiana University - Purdue University Indianapolis, Indianapolis, Indiana, USA.

Article Synopsis
  • The study investigated frontloading, an alcohol drinking pattern where consumption occurs primarily at the beginning of access, using whole brain imaging in mice.
  • Mice underwent binge drinking sessions, with their alcohol intake measured, and after a designated period, their brains were extracted and analyzed for Fos protein expression to identify active brain regions.
  • Results showed that alcohol access altered the connectivity of brain regions differently in males and females, indicating significant differences in how frontloading affects brain networks based on sex.
View Article and Find Full Text PDF
Article Synopsis
  • Vertebrate sexual dimorphism, traditionally linked to the type of gonads (testes or ovaries) and their hormone production, is now shown to also be influenced by sex chromosomes (XX or XY).
  • Using the Four-Core Genotypes (FCG) mouse model, the study reveals that both gonads and sex chromosomes affect the musculoskeletal system's development, with notable differences becoming more pronounced in older mice.
  • Findings indicate that while gonadal sex plays a significant role in musculoskeletal traits, sex chromosomes contribute meaningfully to differences in body composition and bone strength, particularly as the mice mature.
View Article and Find Full Text PDF

CTAB-crafted ZnO nanostructures for environmental remediation and pathogen control.

Sci Rep

September 2024

Materials and Modelling Laboratory, Department of Physics Faculty of Sciences Meknes, Moulay Ismail University, Meknes, Morocco.

This study addresses the critical need for efficient and sustainable methods to tackle organic pollutants and microbial contamination in water. The present work aim was to investigate the potential of multi-structured zinc oxide nanoparticles (ZnO NPs) for the combined photocatalytic degradation of organic pollutants and antimicrobial activity. A unique fusion of precipitation-cum-hydrothermal approaches was precisely employed to synthesize the ZnO NPs, resulting in remarkable outcomes.

View Article and Find Full Text PDF

The Sport Concussion Assessment Tool (SCAT) is the most widely used tool following sport-related concussion (SRC). Initial SCAT symptom burden is a strong predictor of recovery in collegiate athletes; however, it is unknown if symptom presentation varies within the acute (<48 h) post-SRC phase. The purpose of this cohort study was to examine acute SRC symptom presentation among the National Collegiate Athletic Association (NCAA) athletes.

View Article and Find Full Text PDF

Transcranial alternating current stimulation (tACS) delivered to the primary motor cortex (M1) can increase cortical excitability, entrain neuronal firing patterns, and increase motor skill acquisition in simple motor tasks. The primary aim of this study was to assess the impact of tACS applied to M1 over three consecutive days of practice on the motor learning of a challenging overhand throwing task in young adults. The secondary aim was to examine the influence of tACS on M1 excitability.

View Article and Find Full Text PDF

We describe the machine learning tool that we applied in the CAGI 6 experiment to predict whether single residue mutations in proteins are deleterious or benign. This tool was trained using only single sequences, i.e.

View Article and Find Full Text PDF
Article Synopsis
  • The COVID-19 pandemic and social justice movements significantly affected the college experience of undergraduate students at a private university, reflecting both positive and negative emotions.
  • In surveys conducted in August 2020 and January 2021, students reported experiencing a wide range of emotions in response to both the pandemic and the civil unrest related to systemic racism.
  • Notably, students felt more positively about the civil unrest than about COVID-19 in August 2020, but negative emotions regarding the pandemic increased even after vaccines became available in January 2021.
View Article and Find Full Text PDF
Article Synopsis
  • The study examines the effectiveness of three types of internal fixation devices (L bone plate, T bone plate, and screw-washer) in treating lateral tibial plateau fractures.
  • Following surgery, the T bone plate provided the best stability during rehabilitation, outperforming both the L bone plate and screw-washer designs.
  • The L bone plate was stable initially but became less effective over time, while the screw-washer showed the least stability overall, highlighting the advantages of the T bone plate as a preferred option for surgeons.
View Article and Find Full Text PDF

Introduction: Volatile organic compounds (VOCs) in breath serve as a source of biomarkers for medical conditions relevant to warfighter health including Corona Virus Disease and other potential biological threats. Electronic noses are integrated arrays of gas sensors that are cost-effective and miniaturized devices that rapidly respond to VOCs in exhaled breath. The current study seeks to qualify healthy breath baselines of exhaled VOC profiles through analysis using a commercialized array of metal oxide (MOX) sensors.

View Article and Find Full Text PDF

We assess associations of somatic and cognitive/affective depressive symptom clusters with monocyte activation (soluble (s)CD14, sCD163), systemic inflammation (interleukin-6 (IL-6), high-sensitivity C-reactive protein (hsCRP)), and coagulation (D-dimer, fibrinogen) in people with HIV (PWH) on suppressive antiretroviral therapy with depression. Utilizing baseline data from a randomized controlled trial, we found no significant associations in linear regression models examining individual depressive symptom clusters; however, models examining both clusters simultaneously showed that the somatic cluster was positively associated with inflammation biomarkers, while the cognitive/affective cluster was negatively associated with inflammation and coagulation biomarkers (suggesting a cooperative suppression effect). Our findings indicate a differential association with depressive symptom clusters and biological mechanisms underlying cardiovascular disease (CVD) in HIV, which may be driven by unique components of each depressive symptom cluster.

View Article and Find Full Text PDF

Expanding upon the critical advancements brought forth by single-cell omics in pulmonary hypertension (PH) research, this review delves deep into how these technologies have been piloted in a new era of understanding this complex disease. By leveraging the power of single cell transcriptomics (scRNA-seq), researchers can now dissect the complicated cellular ecosystem of the lungs, examining the key players such as endothelial cells, smooth muscle cells, pericytes, and immune cells, and their unique roles in the pathogenesis of PH. This more granular view is beyond the limitations of traditional bulk analysis, allowing for the identification of novel therapeutic targets previously obscured in the aggregated data.

View Article and Find Full Text PDF