Publications by authors named "HOLT L"

Unlabelled: Understanding how cells control their biophysical properties during development remains a fundamental challenge. While cytoplasmic macromolecular crowding affects multiple cellular processes in single cells, its regulation in living animals remains poorly understood. Using genetically encoded multimeric nanoparticles for rheology, we discovered that tissues maintain distinct cytoplasmic biophysical properties that differ from those observed across diverse systems, including bacteria, yeast species, and cultured mammalian cells.

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Background: The person-based approach (PBA) has emerged as a prominent methodology guiding the development of digital and hybrid health behaviour change interventions over the last decade, and there is a salient need to understand its utilization.

Objective: This study aims to describe which elements of the PBA have been utilised in intervention development research, for which populations, and how this has been reported.

Methods: A search for intervention development papers published between 2015 and 2023 using forward citation searches was undertaken in Scopus, using two seed articles.

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Introduction: In Texas, the adolescent birth rate is higher than the national average and STIs have steadily increased over the last decade. Sex education is not mandated in Texas and the majority of public schools provide an abstinence-based sex education. Comprehensive sexuality education (CSE) programs are widely endorsed by national and global health organizations and research has shown that they are more effective in reducing poor sexual health outcomes than abstinence-based programs.

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Introduction: Although young adults use electronic nicotine delivery systems (ENDS) more often than any other demographic group, most are interested in cessation; however, little is known about their cessation experiences. The present study examined characteristics associated with quit attempts, reasons for quitting and resources utilized, and psychological symptoms [i.e.

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: The prevalence and dependence of e-cigarettes have increased among young adult college students in recent years. Though several independent risk factors for e-cigarette use and dependence have been identified, research employing theory-informed models to predict e-cigarette use and dependence is limited. : Using Self Determination Theory (SDT), e-cigarette use and dependence may be understood as stemming from need frustration that impairs autonomy, competence, and relatedness, which increases vulnerability for negative health outcomes, including e-cigarette use.

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The human auditory system consists of both peripheral and central components, both of which play a role but contribute distinctly to overall auditory functioning and can be differentially impacted by pathophysiologic states. Hemispheric surgery (HS), a procedure used for the treatment of drug-resistant epilepsy, involves complete disconnection of the auditory cortex in the operative hemisphere, leaving hearing acuity (peripheral function) intact but having heavy implications for auditory processing (central function). The literature describing pre- and post-operative auditory processing abilities of individuals who have undergone HS is sparse, but the research available provides evidence that several central auditory processes including auditory spatial analysis and temporal processing may be impacted.

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Humans and other animals develop remarkable behavioral specializations for identifying, differentiating, and acting on classes of ecologically important signals. Ultimately, this expertise is flexible enough to support diverse perceptual judgments: a voice, for example, simultaneously conveys what a talker says as well as myriad cues about her identity and state. Mature perception across complex signals thus involves both discovering and learning regularities that best inform diverse perceptual judgments, and weighting this information flexibly as task demands change.

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Article Synopsis
  • Investigating chromosomal instability and aneuploidy is crucial for understanding how tumors develop and creating better diagnostic and treatment methods.
  • The new method, KaryoTap, combines targeted DNA sequencing with advanced computational tools to efficiently detect chromosomal gains, losses, and neutral variants across thousands of single cells.
  • KaryoTap shows high accuracy in identifying chromosomal changes and has the potential to enhance research on aneuploidy in both tumor and normal cells, enabling functional screening with CRISPR technology.
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  • Astrocytes in the nucleus accumbens (NAc) have been shown to play a significant role in stress and depression, but their transcriptional responses to stress were not well understood prior to this study.
  • Using methods like RNA-sequencing and immunohistochemistry, researchers investigated how chronic social defeat stress (CSDS) affects the transcriptome of NAc astrocytes in male mice.
  • The findings revealed a strong transcriptional response in astrocytes linked to CREB activation, which influences whether a mouse becomes stress-resilient or stress-susceptible, highlighting the potential of astrocytes in understanding neuropsychiatric disorders.
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  • Humans and machines often learn without direct feedback or supervision, relying heavily on unsupervised data.
  • There is debate around whether unsupervised learning is beneficial for humans, with mixed empirical results suggesting that self-reinforcement of predictions can be advantageous or detrimental based on the alignment of those predictions with the task.
  • The authors propose a framework to explain these mixed results and offer insights into effective learning strategies relevant to education and lifelong learning.
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Parkinson's Disease (PD) is a clinically diagnosed disease that carries a reported misdiagnosis rate of 10-20%. Recent scientific discoveries have provided evidence of volatile organic compounds in sebum that are unique to patients with PD. The primary objective of this study was to determine if companion dogs could be trained to distinguish between sebum samples provided by PD-positive patients and PD-negative human controls.

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Background: The growth factor receptor bound protein 7 (Grb7) family of signalling adaptor proteins comprises Grb7, Grb10 and Grb14. Each can interact with the insulin receptor and other receptor tyrosine kinases, where Grb10 and Grb14 inhibit insulin receptor activity. In cell culture studies they mediate functions including cell survival, proliferation, and migration.

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Pursuing health equity necessitates recognizing health disparities that disproportionately impact disadvantaged groups and eliminating their barriers to essential health resources. Interactive digital technologies-specifically, popular social media platforms such as blogs and social networks-can be leveraged to engage underserved minority populations in collective social action aimed at addressing key determinants of health disparities and promoting equitable health outcomes. The present research focuses on the plight of African Americans-a minority group facing significant health disparities.

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Unlabelled: Humans and other animals use information about how likely it is for something to happen. The absolute and relative probability of an event influences a remarkable breadth of behaviors, from foraging for food to comprehending linguistic constructions -- even when these probabilities are learned implicitly. It is less clear how, and under what circumstances, statistical learning of simple probabilities might drive changes in perception and cognition.

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Objective: Food and alcohol disturbance (FAD) is the use of any compensatory behavior (e.g., skipping meals) within the context of a drinking episode.

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Background: Inclusion in public health research of young people from low-income households and those from minority ethnic groups remains low. It is recognised that there is a need to change the way in which research is conducted so that it becomes more inclusive. The aim of this work was to identify novel and innovative ways to maximise recruitment and inclusion of diverse participants when doing co-production within very short time frames for emergency responses.

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Purpose: In the postanesthesia care unit (PACU), it is imperative to monitor respiration and ventilation, especially in patients diagnosed with or at risk for obstructive sleep apnea (OSA). Research studies have been published to highlight the importance of minute ventilation monitoring (MVM) as an early warning system of impending respiratory compromise, warranting studies to assess timely safe discharge in this high-risk population at UC San Diego Health.

Design: This quantitative study was conducted using a two-group comparative design method.

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The cell interior is packed with macromolecules of mesoscale size, and this crowded milieu significantly influences cellular physiology. Cellular stress responses almost universally lead to inhibition of translation, resulting in polysome collapse and release of mRNA. The released mRNA molecules condense with RNA-binding proteins to form ribonucleoprotein (RNP) condensates known as processing bodies and stress granules.

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The development of drug addiction is characterized by molecular changes in brain reward regions that lead to the transition from recreational to compulsive drug use. These neurobiological processes in brain reward regions, such as the nucleus accumbens (NAc), are orchestrated in large part by transcriptional regulation. Our group recently identified the transcription factor E2F3a as a novel regulator of cocaine's rewarding effects and gene expression regulation in the NAc of male mice.

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The mechanisms that regulate the physical properties of the cell interior remain poorly understood, especially at the mesoscale (10nm-100nm). Changes in these properties have been suggested to be crucial for both normal physiology and disease. Many crucial macromolecules and molecular assemblies such as ribosomes, RNA polymerase, and biomolecular condensates span the mesoscale size range.

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Article Synopsis
  • In Australia, pharmacists' prescribing abilities have recently expanded to include more medications, specifically for urinary tract infections, certain dermatological conditions, and contraceptives, in a trial initiated by the NSW Government.
  • This sub-study aims to gather insights from Aboriginal and Torres Strait Islander communities and healthcare practitioners about their perspectives on this expanded prescribing practice, including potential risks and benefits.
  • Methods include yarning circles and semi-structured interviews with local leaders, clinicians, and community members, seeking to understand the community's unique views and concerns regarding the changes in pharmacist roles.
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Multilingual speakers can find speech recognition in everyday environments like restaurants and open-plan offices particularly challenging. In a world where speaking multiple languages is increasingly common, effective clinical and educational interventions will require a better understanding of how factors like multilingual contexts and listeners' language proficiency interact with adverse listening environments. For example, word and phrase recognition is facilitated when competing voices speak different languages.

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Efficient behavior is supported by humans' ability to rapidly recognize acoustically distinct sounds as members of a common category. Within auditory cortex, there are critical unanswered questions regarding the organization and dynamics of sound categorization. Here, we performed intracerebral recordings in the context of epilepsy surgery as 20 patient-participants listened to natural sounds.

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With health and surgery increasingly aided by digital technologies, there exists a growing impetus to understand how such tools must integrate into existing clinical pathways to ensure a positive impact on patient and organisational outcomes. Consequently, this study sought to collate evidence on the use of digital technology in cardiac reperfusion surgeries. We systematically searched three scientific databases for relevant articles.

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