Blink-induced changes in pupil dynamics are consistent and heritable.

Pupil size and blink rates are heritable but the extent to which they interact with one another has not been properly investigated. Though changes in pupil size due to eye blinks have been reported, they are considered a pupillary artifact. In this study we used the HCP 7T fMRI dataset with resting state eye-tracking data obtained in monozygotic and dizygotic twins to assess their heritability and their interactions.

Changes in Rest-Activity Rhythms in Adolescents as They Age: Associations With Brain and Behavioral Changes in the ABCD Study.

Objective: Adolescents with disrupted rest-activity rhythms (RARs), including shorter sleep duration, later sleep timing, and low physical activity levels, are at greater risk for mental health and behavioral problems. It remains unclear whether the same associations can be observed for within-subject changes in RARs.

Method: This longitudinal investigation on RARs used Fitbit data from the Adolescent Brain Cognitive Development (ABCD) Study at the 2-year follow-up (FL2) (ages 10-13 years) and 4-year follow-up (FL4) (ages 13-16 years).

A multi-omics Mendelian randomization study identifies new therapeutic targets for alcohol use disorder and problem drinking.

Integrating proteomic and transcriptomic data with genetic architectures of problematic alcohol use and alcohol consumption behaviours can advance our understanding and help identify therapeutic targets. We conducted systematic screens using genome-wise association study data from ~3,500 cortical proteins (N = 722) and ~6,100 genes in 8 canonical brain cell types (N = 192) with 4 alcohol-related outcomes (N ≤ 537,349), identifying 217 cortical proteins and 255 cell-type genes associated with these behaviours, with 36 proteins and 37 cell-type genes being new. Although there was limited overlap between proteome and transcriptome targets, downstream neuroimaging revealed shared neurophysiological pathways.

Ketone ester-enriched diet ameliorates motor and dopamine release deficits in MitoPark mice.

Parkinson's disease (PD) is a progressive, neurodegenerative disease characterized by motor dysfunction and dopamine deficits. The MitoPark (MP) mouse model of PD recapitulates several facets of Parkinson's disease, including gradual development of motor deficits, which enables the study of potential therapeutic interventions. One therapeutic strategy involves decreasing the mitochondrial metabolic load by inducing ketosis and providing an alternative energy source for neurons, leading to decreased neuronal oxidative stress.

A four-factor model of executive function: Predicting physical and academic outcomes from cognitive assessments in adolescents.

Impulsivity and cognitive function are essential for understanding behavioral regulation, particularly in relation to health-risk behaviors like substance use, physical activity, and academic performance. This study examined the factor structure underlying executive function in adolescents using the UPPS-P Impulsive Behavior Scale and NIH Toolbox Cognition Battery. We explored how parental monitoring moderates, and peer network health and perceived stress mediate, relationships between cognitive function and outcomes such as BMI, physical activity, and academic performance.

Multiomic Mendelian Randomization Study Investigating the Impact of PCSK9 and HMGCR Inhibition on Type 2 Diabetes Across Five Populations.

The prevalence of type 2 diabetes (T2D) varies among populations of different races/ethnicities. The influence of genetically proxied LDL cholesterol lowering through proprotein convertase subtilisin/kexin 9 (PCSK9) and HMG-CoA reductase (HMGCR) on T2D in non-European populations is not well established. A drug target Mendelian randomization approach was used to assess the effects of PCSK9 and HMGCR inhibition on T2D risk and glycemic traits in five populations: East Asian (EAS), South Asian (SAS), Hispanic (HISP), African (AFR), and Europe (EUR).

The effect of alcohol, tobacco, and other drug use on vaccine acceptance, uptake, and adherence: a systematic review.

Background: Vaccine hesitancy is increasingly recognized as a health challenge affecting populations worldwide. Given the biological vulnerabilities and structural barriers people who use substances and/or have behavioral addictions face, this systematic review aims to evaluate whether this subpopulation is less prone to adhere to vaccination recommendations.

Methods: Electronic searches of published original research were conducted in PubMed, EMBASE, Scopus, and PsycINFO from database inception to December 2022.

Drinking motives link positive and negative life events to problematic alcohol use during the COVID-19 pandemic: a longitudinal study.

Purpose: Stressful life events are associated with problematic drinking, and alcohol misuse has been exacerbated during the coronavirus disease 2019 (COVID-19) pandemic. While coping motives may account for this association, positive life events (PLEs) and enhancement motives are understudied. To address these gaps, we examined the associations of history of alcohol use disorder (AUD), negative life events (NLEs), and PLEs with problematic alcohol use and tested coping and enhancement motives as mediators.

Barriers to Alcohol Use Disorder Treatment in Patients with Alcohol-Associated Liver Disease.

The cornerstone in managing alcohol-associated liver disease is the treatment of alcohol use disorder (AUD). Several barriers prevent the implementation of adequate treatment and integrated care models. There are patient-level barriers, including the lack of self-awareness of AUD and being ashamed of AUD.

Integrated Stepped Alcohol Treatment With Contingency Management for Unhealthy Alcohol Use Among People With HIV: A Randomized Controlled Trial.

Background: We examined the impact of integrated stepped alcohol treatment with contingency management (ISAT + CM) on alcohol abstinence among people with HIV (PWH) and unhealthy alcohol use.

Methods: In this multisite 24-week trial, we randomized PWH reporting untreated unhealthy alcohol use and with phosphatidylethanol (PEth) >20 ng/mL to receive ISAT+CM or treatment as usual (TAU). Intervention : Step 1 : Social worker-delivered CM; Step 2 : Addiction physician management plus motivational enhancement therapy.

Dynamics of Splenic Transient Elastography in Patients With Alcohol Use Disorder.

Introduction: Splenic stiffness (SS) measurement (SSM) is an evolving noninvasive assessment to evaluate portal hypertension. Studies with respect to SSM in patients with alcohol use disorder are limited.

Methods: We studied patients seeking treatment for alcohol use disorder in an inpatient treatment protocol at the National Institutes of Health and parsed SSM into 3 groups based on degree of change.

Collateral Damage: Neurological Correlates of Non-Fatal Overdose in the Era of Fentanyl-Xylazine.

Non-fatal opioid overdoses are associated with significant morbidity. Hypoxic brain injury caused by opioid-induced respiratory depression is a key mechanism of such morbidity. For example, reports describe an amnestic syndrome in opioid users associated with acute injury to the hippocampus, a brain region that is highly susceptible to hypoxic injury.

Genomic study of taste perception genes in African Americans reveals SNPs linked to Alzheimer's disease.

While previous research has shown the potential links between taste perception pathways and brain-related conditions, the area involving Alzheimer's disease remains incompletely understood. Taste perception involves neurotransmitter signaling, including serotonin, glutamate, and dopamine. Disruptions in these pathways are implicated in neurodegenerative diseases.

Melatonin Prevents Thioacetamide-Induced Gut Leakiness and Liver Fibrosis Through the Gut-Liver Axis via Modulating Sirt1-Related Deacetylation of Gut Junctional Complex and Hepatic Proteins.

Intestinal barrier dysfunction with high serum endotoxin is common in patients with liver fibrosis, but the mechanisms underlying liver fibrosis remain unclear. Melatonin is a well-recognized antioxidant and an anti-inflammatory agent that benefits multiple organs. However, the beneficial effects of melatonin on gut leakiness-associated liver fibrosis have not been systemically studied.

Predictors of National Institute on Alcohol Abuse and Alcoholism (NIAAA) Alcohol Recovery among Individuals in Alcohol Treatment: Implications for Social Work.

The National Institute on Alcohol Abuse and Alcoholism's (NIAAA) definition of alcohol use disorder (AUD) recovery stipulates two criteria: remission from DSM-5 AUD and cessation of heavy drinking. Importantly, these criteria allow for consideration of nonabstinent alcohol treatment outcomes. However, researchers have yet to assess potential predictors of the NIAAA recovery outcome.