Dehydroamino acids and their crosslinks in Alzheimer's disease aggregates.

Alzheimer's disease (AD) is characterized by the accumulation of protein aggregates, which are thought to be influenced by posttranslational modifications (PTMs). Dehydroamino acids (DHAAs) are rarely observed PTMs that contain an electrophilic alkene capable of forming protein-protein crosslinks, which may lead to protein aggregation. We report here the discovery of DHAAs in the protein aggregates from AD, constituting an unknown and previously unsuspected source of extensive proteomic complexity.

Developing a Novel Integrative Health Equity and Anti-racism Tool (IHEART) for Pilot Application in a Multicenter Integrative Health Elective for Medical Students and Resident Physicians: A Study Protocol.

Background: This study protocol introduces the Integrative Health Equity and Anti-Racism Tool (IHEART), an innovative instrument designed to infuse equity, diversity, and inclusion (EDI) into Integrative Health (IH) education. Recognizing the gaps in current IH training that fail to address social and systemic inequities adequately, the IHEART is intended to respond to the growing need for inclusivity in IH practices and educational materials. The tool is mainly focused on addressing issues such as accessibility of complementary and integrative health (CIH) therapies, cultural misappropriation, anti-racism, gender diversity, disability justice, trauma-informed care, weight inclusivity, and planetary health, which are currently inconsistently covered in IH training.

Assessing ChatGPT's Capability in Addressing Thyroid Cancer Patient Queries: A Comprehensive Mixed-Methods Evaluation.

Context: Literature suggests patients with thyroid cancer have unmet informational needs in many aspects of care. Patients often turn to online resources for their health-related information, and generative artificial intelligence programs such as ChatGPT are an emerging and attractive resource for patients.

Objective: To assess the quality of ChatGPT's responses to thyroid cancer-related questions.

Differential Associations of Intrapersonal and Interpersonal Emotion Regulation with Generalized Anxiety and Social Withdrawal Among Children.

Anxiety and social withdrawal are common internalizing problems among children linked to poor emotion regulation (ER). We investigated how specific components of ER (emotion awareness, emotion regulation strategy) are associated with generalized anxiety and social withdrawal in the two ER domains (intrapersonal and interpersonal). Study participants were 398 fourth- and fifth-grade students (49% girls) and 22 teachers from a Midwestern state in the United States.

Serum starvation impacts rhinovirus spread from cell to cell.

Single-cell studies of virus infection have found significant heterogeneity in virus and host gene expression as well as the kinetics of progeny particle release. However, such studies have yet to examine how the resulting virus descendants spread and infect nearby cells. We monitored reporter-gene expression from a recombinant rhinovirus in cell monolayers infected at low multiplicity of infection; we found that the second round of infection consistently exhibited a shorter delay in fluorescence signal appearance relative to the first round, indicating an acceleration in infection spread.

Increased serum GM-CSF at diagnosis of biliary atresia is associated with improved biliary drainage.

Background: The immune heterogeneity of biliary atresia (BA) presents a challenge for development of prognostic biomarkers. This study aimed to identify early immune signatures associated with biliary drainage after Kasai Portoenterostomy (KPE).

Methods: Serum samples, liver slides, and clinical data were obtained from patients enrolled in the NIDDK-supported Childhood Liver Disease Research Network.

Solid state NMR spectral editing of histidine, arginine and lysine using Hadamard encoding.

The NMR signals from protein sidechains are rich in information about intra- and inter-molecular interactions, but their detection can be complicated due to spectral overlap as well as conformational and hydrogen exchange. In this work, we demonstrate a protocol for multi-dimensional solid-state NMR spectral editing of signals from basic sidechains based on Hadamard matrix encoding. The Hadamard method acquires multi-dimensional experiments in such a way that both the backbone and under-sampled sidechain signals can be decoded for unambiguous editing in the N spectral frequency dimension.

Ongoing Symptoms and Concerns Experienced by Low-Risk Breast Cancer Survivors Following Active Treatment.

Introduction: Little is known about the symptom burden of breast cancer survivors with early-stage disease. Many studies have focused on symptoms of patients who are undergoing or recently completed systemic therapy. However, with the increased use of Oncotype DX, the proportion of early-stage hormone receptor-positive patients who undergo chemotherapy has declined, making existing studies of the symptom experience less useful for these patients.

Social mixing patterns of United States healthcare personnel at a quaternary health center: a prospective observational study.

Background: Understanding healthcare personnel's (HCP) contact patterns are important to mitigate healthcare-associated infectious disease transmission. Little is known about how HCP contact patterns change over time or during outbreaks such as the COVID-19 pandemic.

Methods: This study in a large United States healthcare system examined the social contact patterns of HCP via standardized social contact diaries.

Sequence variants in HECTD1 result in a variable neurodevelopmental disorder.

Dysregulation of genes encoding the homologous to E6AP C-terminus (HECT) E3 ubiquitin ligases has been linked to cancer and structural birth defects. One member of this family, the HECT-domain-containing protein 1 (HECTD1), mediates developmental pathways, including cell signaling, gene expression, and embryogenesis. Through GeneMatcher, we identified 14 unrelated individuals with 15 different variants in HECTD1 (10 missense, 3 frameshift, 1 nonsense, and 1 splicing variant) with neurodevelopmental disorders (NDDs), including autism, attention-deficit/hyperactivity disorder, and epilepsy.

Interpretable data-driven chemometric approach for predicting non-optically active water quality parameters using ultraviolet-visible-near infrared absorption spectroscopy and physical-chemical measurements.

Non-optically active water quality parameters (NAWQPs) are essential for surface water quality assessments, although automated monitoring methods are time-consuming, include labor-intensive chemical pretreatment, and pose challenges for high spatiotemporal resolution monitoring. Advancements in spectroscopic techniques and machine learning may address these issues. We integrated ultraviolet-visible-near infrared absorption spectroscopy with physical-chemical measurements to predict total nitrogen (TN), dissolved oxygen (DO), and total phosphorus (TP) in the Yangtze River Basin, China.

Plasma phosphorylated tau217 strongly associates with memory deficits in the Alzheimer's disease spectrum.

Plasma phosphorylated tau biomarkers open unprecedented opportunities for identifying carriers of Alzheimer's disease pathophysiology in early disease stages using minimally invasive techniques. Plasma p-tau biomarkers are believed to reflect tau phosphorylation and secretion. However, it remains unclear to what extent the magnitude of plasma p-tau abnormalities reflects neuronal network disturbance in the form of cognitive impairment.

Discovery of a MET-driven monogenic cause of steatotic liver disease.

Background Aims: Metabolic dysfunction-associated steatotic liver disease (MASLD) affects about a third of adults worldwide and is projected soon to be the leading cause of cirrhosis. It occurs when fat accumulates in hepatocytes and can progress to metabolic dysfunction-associated steatohepatitis (MASH), liver cirrhosis, and hepatocellular carcinoma. MASLD pathogenesis is believed to involve a combination of genetic and environmental risk factors.

Blind-label subwavelength ultrasound imaging.

There is a long-existing trade-off between the imaging resolution and penetration depth in acoustic imaging caused by the diffraction limit. Most existing approaches addressing this trade-off require controlled "labels," i.e.

Preclinical evaluation of zirconium-89 labeled anti-Trop2 antibody-drug conjugate (Trodelvy) for imaging in gastric cancer and triple-negative breast cancer.

Purpose: Trophoblast cell-surface antigen 2 (Trop2) is overexpressed in various solid tumors and contributes to tumor progression, while its expression remains low in normal tissues. Trop2-targeting antibody-drug conjugate (ADC), sacituzumab govitecan-hziy (Trodelvy), has shown efficacy in targeting this antigen. Leveraging the enhanced specificity of ADCs, we conducted the first immunoPET imaging study of Trop2 expression in gastric cancer (GC) and triple-negative breast cancer (TNBC) models using Zr-labeled Trodelvy ([Zr]Zr-DFO-Trodelvy).

Impact of tissue-independent positron range correction on [Ga]Ga-DOTATOC and [Ga]Ga-PSMA PET image reconstructions: a patient data study.

Purpose: The positron range effect can impair PET image quality of Gallium-68 (Ga). A positron range correction (PRC) can be applied to reduce this effect. In this study, the effect of a tissue-independent PRC for Ga was investigated on patient data.

Age-related differences in eye movements and the association with Archimedes spiral tracing performance in young and older adults.

Age-related hand motor impairments may critically depend on visual information though few studies have examined eye movements during tasks of hand function in older adults. The purpose of this study was to assess eye movements and their association with performance while tracing on a touchscreen in young and older adults. Eye movements of 21 young (age 20-38 years; 12 females, 9 males) and 20 older (65-85 years; 10 females, 10 males) adults were recorded while performing an Archimedes spiral tracing task, a common clinical assessment sensitive to age-associated impairments in hand function.

Can social pain be medicated away? A pilot study on everyday discrimination and its exacerbation of opioid misuse risk in people of color with chronic pain.

Despite mounting evidence of a robust relation between discrimination and poor pain outcomes in people of color (POC) with chronic pain, little is known about everyday discrimination's role in increasing the risk of opioid misuse and its potential interactive effects. This study aimed to evaluate the potential moderating effect of everyday discrimination on the relationship between chronic pain severity and the risk of opioid misuse among POC with chronic pain. Everyday discrimination was assessed using the 9-item Everyday Discrimination Scale (EDS), while the risk of opioid misuse was measured with the 14-item Screener and Opioid Assessment for Patients with Pain (SOAPP).

Quantifying Muscle Volume Deficits Among 38 Lower Extremity Muscles in Collegiate Football Athletes After Anterior Cruciate Ligament Reconstruction.

Background: Quadriceps dysfunction is ubiquitous after anterior cruciate ligament (ACL) reconstruction (ACLR). Addressing quadriceps dysfunction is crucial to improve function, reduce the reinjury risk, and maintain long-term knee health. While deficits specific to the quadriceps are well documented, less is known about the effect of an ACL injury on other lower extremity muscle groups.

The transfer of care experience in young adults with type 1 diabetes.

Objectives: To explore the experiences and perceptions of young adults with type 1 diabetes (T1D) after they transferred care from a pediatric to an adult clinic, utilizing an organized transfer process that included a Diabetes Transition Clinic (DTC) and a transfer letter (TL).

Methods: This retrospective study used a semi-structured interview 1-1.5 years after transfer of care, which gathered both quantitative and qualitative data of young adults (n=12) who transferred care at an average age of 19.

Associations between common genetic variants and income provide insights about the socio-economic health gradient.

We conducted a genome-wide association study on income among individuals of European descent (N = 668,288) to investigate the relationship between socio-economic status and health disparities. We identified 162 genomic loci associated with a common genetic factor underlying various income measures, all with small effect sizes (the Income Factor). Our polygenic index captures 1-5% of income variance, with only one fourth due to direct genetic effects.

Activation of Wnt/β-catenin in neural progenitor cells regulates blood-brain barrier development and promotes neuroinflammation.

The central nervous system (CNS) requires specialized blood vessels to support neural function within specific microenvironments. During neurovascular development, endothelial Wnt/β-catenin signaling is required for BBB development within the brain parenchyma, whereas fenestrated blood vessels that lack BBB properties do not require Wnt/β-catenin signaling. Here, we used zebrafish to further characterize this phenotypic heterogeneity of the CNS vasculature.