Publications by authors named "Whelan R"

This study investigated the effects and interactions among diets formulated to have high starch-to-lipid ratios (S:L), amino acid density [indicated as % digestible lysine (DigLys)], and AME on growth performance and carcass characteristics of heat stressed broilers. A {3,3} simplex lattice design was used to assess relative effects and generate predictive models. Three basal finisher diets were formulated to have the highest S:L ratio (Basal A; 20:1), DigLys (Basal B; 1.

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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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  • This study uses multi-modal MRI to investigate neurobiological differences between anorexia nervosa (AN) and bulimia nervosa (BN), revealing structural and functional brain changes linked to these eating disorders.
  • Key findings include reduced gray matter volume in specific brain regions (like the orbitofrontal cortex) and decreased cortical thickness, particularly in anorexia patients, which are associated with impulsivity and cognitive restraint regarding eating behaviors.
  • The results suggest that these brain changes affect reward processing and contribute to the persistence of eating disorder symptoms, highlighting potential targets for future treatment interventions.
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Background: Progranulin (PGRN), also identified as Precursor cell-derived growth factor (PCDGF), is a glycoprotein that is expressed and released ubiquitously. PGRN is plays a crucial role in regulating cell proliferation, differentiation, and pathological pathways. PGRN overexpression has been noted in many cancers and plays an important role in wound healing.

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The Athens Canadian Random Bred (ACRB) heritage broiler breed, which has not been selectively bred since the 1950s, is a point of comparison to the modern-day broiler and could highlight potential genetic-derived differences in immune responses. To observe the modern and heritage birds' immune responses in action, the innate immune ligand CpG oligonucleotides were administered at multiple time points through the birds' lives from the day after hatch to day 35 post-hatch. This study allowed for the observation of changes in metabolic and immune signaling in response to repeated injections of a known Toll-like receptor (TLR) ligand, CpG.

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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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  • Structural income inequality, defined as the uneven distribution of income across regions, affects brain dynamics and functions more significantly than individual factors like age or education.
  • This study used EEG signals from 1,394 healthy participants across 10 countries to explore how structural inequality predicts various brain activity metrics, revealing a connection between socioeconomic conditions and neural functioning.
  • Results show that higher structural income inequality is associated with lower brain signal complexity, increased random neural activity, and reduced power in certain brain wave frequencies, suggesting the need for a broader understanding of how social factors influence brain health.
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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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Obesity, a complex condition that involves genetic, environmental, and behavioral factors, is a non-infectious pandemic that affects over 650 million adults worldwide with a rapidly growing prevalence. A major contributor is the consumption of high-fat diets, an increasingly common feature of modern diets. Maternal obesity results in an increased risk of offspring developing obesity and related health problems; however, the impact of maternal diet on the adipose tissue composition of offspring has not been evaluated.

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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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Background: Pressurized intraperitoneal aerosolized chemotherapy (PIPAC) is a novel, minimally invasive, safe, and repeatable method to treat carcinomatosis. Evidence regarding the clinical benefit (quality of life and survival) of PIPAC compared with that of conventional standard therapy (ST) is lacking.

Methods: This is the secondary analysis of the phase 1 US-PIPAC trial for refractory colorectal and appendiceal carcinomatosis.

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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: Free flap reconstruction of the lower extremity is technically challenging and may suffer from higher complication rates than other anatomical sites. One important vascular consideration in the reconstructive process is the microsurgical anastomotic technique, namely whether an end-to-end (ETE) or end-to side (ETS) technique is used. The ETS technique is often preferred by lower limb microsurgeons, who describe its benefits of improved distal perfusion.

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Objective: Since 2011, otolaryngologists aiming to become certified in sleep medicine have had to complete an ACGME accredited sleep medicine fellowship. In addition to standard sleep medicine and sleep surgery fellowships, several institutions have developed hybrid ACGME sleep medicine programs that incorporate sleep surgery training. Our primary aims were to understand the balance between sleep medicine and surgical training requirements and the surgical volume of recent graduates across the three pathways.

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Brain clocks, which quantify discrepancies between brain age and chronological age, hold promise for understanding brain health and disease. However, the impact of diversity (including geographical, socioeconomic, sociodemographic, sex and neurodegeneration) on the brain-age gap is unknown. We analyzed datasets from 5,306 participants across 15 countries (7 Latin American and Caribbean countries (LAC) and 8 non-LAC countries).

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The enrichment of trace proteins from human fluid samples is of great importance in diverse clinical and industrial applications. In clinical diagnostics, such enrichment may enable detection of trace proteins that serve as biomarkers of disease. Affinity-based approaches, such as immunoaffinity pulldown, are widely used to enrich trace proteins, but this strategy relies on the availability and performance of antibodies that act on all proteoforms in an unbiased manner.

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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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Introduction: Low grade serous ovarian carcinoma (LGSOC) is a rare subtype of ovarian cancer (OC) that is challenging to treat due to its relative chemoresistance. Given that LGSOC patients often recur in the peritoneal cavity, novel intraperitoneal (IP) chemotherapy should be explored. Pressurized intraperitoneal aerosolized chemotherapy (PIPAC) is a method that has demonstrated peritoneal disease control in cancers with peritoneal metastases.

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