Publications by authors named "Vaidya N"

The evidence supporting the presence of individual brain structure correlates of the externalizing spectrum (EXT) is sparse and mixed. To date, large-sample studies of brain-EXT relations have mainly found null to very small effects by focusing exclusively on either EXT-related personality traits (e.g.

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Unhealthy eating, a risk factor for eating disorders (EDs) and obesity, often coexists with emotional and behavioral problems; however, the underlying neurobiological mechanisms are poorly understood. Analyzing data from the longitudinal IMAGEN adolescent cohort, we investigated associations between eating behaviors, genetic predispositions for high body mass index (BMI) using polygenic scores (PGSs), and trajectories (ages 14-23 years) of ED-related psychopathology and brain maturation. Clustering analyses at age 23 years ( = 996) identified 3 eating groups: restrictive, emotional/uncontrolled and healthy eaters.

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Background: Atypical teratoid rhabdoid tumor (ATRT) is the most common malignant brain tumor in infants, and more than 60% of children with ATRT die from their tumor. ATRT is associated with mutational inactivation/deletion of , a member of the SWI/SNF chromatin remodeling complex, suggesting that epigenetic events play a critical role in tumor development and progression. Moreover, disruption of SWI/SNF allows unopposed activity of epigenetic repressors, which contribute to tumorigenicity.

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Black band disease (BBD) is one of the most prevalent diseases causing significant destruction of coral reefs. Coral reefs acquire this deadly disease from bacteria in the microbiome community, the composition of which is highly affected by the environmental temperature. While previous studies have provided valuable insights into various aspects of BBD, the temperature-dependent microbiome composition has not been considered in existing BBD models.

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  • The study utilized machine learning models to identify reliable diagnostic markers for eating disorders, major depressive disorder, and alcohol use disorder, targeting young adults aged 18-25.
  • The classification models showed high accuracy rates (AUC-ROC ranging from 0.80 to 0.92) even without considering body mass index and highlighted shared predictors like neuroticism and hopelessness.
  • Additionally, the models were moderately successful in predicting future symptoms related to eating disorders, depression, and alcohol use in a longitudinal sample of adolescents, indicating the potential for improved diagnosis and risk assessment in mental health.
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Introduction: A growing literature has shown that exposure to adverse life events during childhood or adolescence is associated with the presence of psychotic-like experiences (PLEs), which is in turn associated with the risk of psychotic outcomes. Ruminative thinking, i.e.

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Food insecurity and access to healthy nutritious foods are ongoing issues for urban Indigenous communities across the United States. This manuscript describes a qualitative evaluation of a produce box program implemented by the Native American Community Clinic in Minneapolis and provides recommendations for sustainability of the program in the future.

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  • * A study utilizing the Adolescent Brain Cognitive Development cohort revealed seven genomic regions where gene-environment interactions affect gray matter volume, tied to metabolic and inflammatory processes, as well as synaptic plasticity.
  • * The analysis highlighted that socioeconomic status, rather than family environment, plays a crucial role in how maternal education influences genetic effects on neurodevelopment, offering insights into the biological and social mechanisms involved.
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Background: Psychotic symptoms in adolescence are associated with social adversity and genetic risk for schizophrenia. This gene-environment interplay may be mediated by personality, which also develops during adolescence. We hypothesized that (i) personality development predicts later Psychosis Proneness Signs (PPS), and (ii) personality traits mediate the association between genetic risk for schizophrenia, social adversities, and psychosis.

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  • This study investigates structural brain aging by analyzing both cross-sectional and longitudinal data from over 37,000 healthy individuals in the UK Biobank, identifying two distinct patterns of brain aging.
  • Participants showing signs of accelerated brain aging also experienced faster biological aging, cognitive decline, and higher genetic risks for neuropsychiatric disorders.
  • The research supports the 'last in, first out' hypothesis linking brain aging to brain development, and includes genomic analysis to uncover genetic factors influencing both accelerated brain aging and delayed development.
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  • Immunoglobulin G4-related disease (IgG4-RD) is a rare immune condition that can affect various organs and is characterized by high levels of serum IgG4 and specific tissue damage.
  • A 24-year-old man diagnosed with IgG4-related type 1 autoimmune pancreatitis (AIP) presented symptoms like dry cough, nasal congestion, sore throat, and fever.
  • He received treatment with prednisolone and azathioprine, showing positive results in his recovery based on established diagnostic criteria.
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Off-campus (volunteer, community-based) clinical faculty, upon whom medical schools heavily depend, are an integral component of medical education. However, challenges hinder their involvement in medical school governance and other activities, including inadequate communication, lack of recognition, high clinical demands that may preclude teaching, and time-consuming non-clinical tasks. While faculty appointments offer benefits like free CME, access to library resources, and email communications, faculty often prioritize potential contributions to their teaching roles over these benefits.

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  • Resilience to emotional disorders in adolescents, particularly after childhood abuse, is influenced by brain responses to environmental stressors, but the specific brain signatures of resilience are still being studied.
  • Research identified two brain networks linked to resilience, with a notable finding that girls with greater activation in a specific orbitofrontal network experienced fewer emotional symptoms after childhood abuse when they had a higher genetic risk for depression.
  • The study suggests these genetic influences on brain activity can predict emotional disorders in late adolescence, highlighting the potential for developing resilience-based interventions to improve adolescent mental health.
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Neural variability, or variation in brain signals, facilitates dynamic brain responses to ongoing demands. This flexibility is important during development from childhood to young adulthood, a period characterized by rapid changes in experience. However, little is known about how variability in the engagement of recurring brain states changes during development.

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Human brain morphology undergoes complex changes over the lifespan. Despite recent progress in tracking brain development via normative models, current knowledge of underlying biological mechanisms is highly limited. We demonstrate that human cortical thickness development and aging trajectories unfold along patterns of molecular and cellular brain organization, traceable from population-level to individual developmental trajectories.

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  • * It analyzed over 1000 participants from ages 14 to 23 to determine if issues with sustained attention predict future substance use rather than being just a side effect.
  • * The results showed that strong brain connections related to sustained attention at age 14 can predict an increase in cannabis and cigarette use later, highlighting sustained attention as a key indicator of vulnerability to substance use.
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Background: Root canal retreatment aims to eliminate or substantially reduce the microbial load from the root canal and removal of previous root filling materials is the primary goal of nonsurgical retreatment.

Aim: To comparatively evaluate the effectiveness of ProTaper retreatment files, Mtwo retreatment files, and Hedstrom files along with Gates Glidden (GG) Drill by using a stereomicroscope for the detection of remaining gutta-percha after root canal retreatment using a stereomicroscope.

Materials And Methods: Forty-five test samples were divided into three experimental groups (15 samples each), such as Group A-ProTaper retreatment files; Group B-Mtwo retreatment files; Group C-Hedstrom files along with Gates Glidden Drill.

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Importance: The development of an alcohol use disorder in adolescence is associated with increased risk of future alcohol dependence. The differential associations of risk factors with alcohol use over the course of 8 years are important for preventive measures.

Objective: To determine the differential associations of risk-taking aspects of personality, social factors, brain functioning, and familial risk with hazardous alcohol use in adolescents over the course of 8 years.

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Incomplete Hippocampal Inversion (IHI), sometimes called hippocampal malrotation, is an atypical anatomical pattern of the hippocampus found in about 20% of the general population. IHI can be visually assessed on coronal slices of T1 weighted MR images, using a composite score that combines four anatomical criteria. IHI has been associated with several brain disorders (epilepsy, schizophrenia).

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Adolescents exhibit remarkable heterogeneity in the structural architecture of brain development. However, due to limited large-scale longitudinal neuroimaging studies, existing research has largely focused on population averages, and the neurobiological basis underlying individual heterogeneity remains poorly understood. Here we identify, using the IMAGEN adolescent cohort followed up over 9 years (14-23 y), three groups of adolescents characterized by distinct developmental patterns of whole-brain gray matter volume (GMV).

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Introduction: The COVID-19 pandemic exacerbated mental health concerns and stress among American Indians and Alaska Natives (AI/ANs) in the United States, as well as among frontline workers responding to the pandemic. Psychological First Aid (PFA) is a promising intervention to support mental wellbeing and coping skills during and after traumatic events, such as the COVID-19 pandemic. Since PFA is often implemented rapidly in the wake of a disaster or traumatic event, evidence evaluating its impact is lacking.

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Despite the availability of successful vaccines, measles outbreaks have occurred frequently in recent years, presumably due to the lack of proper vaccination implementation. Moreover, measles cases in adult groups, albeit small in number, indicate that the previously neglected adult group may need to be brought into vaccine coverage to achieve WHO's goal of measles eradication from the globe. In this study, we develop a novel transmission dynamics model to describe measles cases in adults and children to evaluate the role of adult infection in persistent measles cases and vaccination programs for eradication.

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Perseverative negative thoughts, known as rumination, might arise from emotional challenges and preclude mental health when transitioning into adulthood. Due to its multifaceted nature, rumination can take several ruminative response styles, that diverge in manifestations, severity, and mental health outcomes. Still, prospective ruminative phenotypes remain elusive insofar.

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Article Synopsis
  • - The study investigates how the balance between excitation and inhibition in brain cortex microcircuits changes during adolescence, a critical period for brain maturation.
  • - Using advanced simulations and resting-state fMRI data from two large groups, researchers found an increase in inhibition in certain brain regions (association cortices) as adolescents age, while sensorimotor areas showed more stable excitation levels.
  • - The findings suggest that there’s a consistent developmental pattern in the excitation-inhibition balance that can vary among individuals, providing a new computational method to study brain maturation at a personal level.
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Background Dental caries represents a dynamic process, often reversible in its early stages. Fluoride has conventionally served as the cornerstone for remineralization and early caries arrest. However, excessive fluoride intake can lead to both local and systemic toxicity.

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