Publications by authors named "Belcher B"

Approximately 85,000 adolescent and young adults (AYAs; age 15-39) are diagnosed with cancer in the United States annually. Experiencing a cancer diagnosis as an AYA can substantially impact social connections and social health. This paper describes the design and protocol of an observational study to prospectively assess social health and its association with physical activity and quality of life among AYAs after a cancer diagnosis.

View Article and Find Full Text PDF

Background: Less moderate to vigorous physical activity (MVPA), more sedentary time (ST), and higher perceived stress are related to type 2 diabetes mellitus (T2DM) occurrence, but observational evidence addressing the interaction of these factors is lacking in youth. This pilot study investigated momentary stress as a moderator in the acute associations of MVPA and ST with subsequent glucose in healthy adolescents.

Methods: Participants (N=15, Mage=13.

View Article and Find Full Text PDF

Background: During the early months of the COVID-19 pandemic, decreases in physical activity (PA) and increases in sedentary behavior (SB) were reported among children in the United States (U.S.).

View Article and Find Full Text PDF

The transcription factor Six2 plays a crucial role in maintaining self-renewing nephron progenitor cap mesenchyme (CM) during metanephric kidney development. In mouse and human, expression at single-cell resolution has detected Six2 in cells as they leave the CM pool and differentiate. The role Six2 may play in these cells as they differentiate remains unknown.

View Article and Find Full Text PDF
Article Synopsis
  • * Using data from 231 young adults over three months, participants reported their emotions through smartphone surveys and tracked their physical activity with smartwatches, allowing for a comprehensive analysis of day-to-day relationships between feelings and activity levels.
  • * Results show that higher emotional variability (like switching between feeling happy and then stressed) is linked to lower physical activity on the same day, highlighting the importance of emotional stability in maintaining consistent exercise habits.
View Article and Find Full Text PDF

Background: Individuals with depression symptoms have a harder time quitting smoking. High negative affect and low positive affect are core depression symptoms and arise following cigarette abstinence. Investigating associations of biological markers with negative and positive affect may provide valuable information about factors relevant to smoking cessation in individuals with elevated depression symptoms.

View Article and Find Full Text PDF

Chlorinated gymnastatin and dankastatin alkaloids derived from the fungal strain Gymnascella dankaliensis have been reported to possess significant anticancer activity but their mode of action is unknown. These members possess electrophilic functional groups that can might undergo covalent bond formation with specific proteins to exert their biological activity. To better understand the mechanism of action of this class of natural products, we mapped the proteome-wide cysteine reactivity of the most potent of these alkaloids, dankastatin B, by using activity-based protein profiling chemoproteomic approaches.

View Article and Find Full Text PDF

Background: Adolescent-onset type 2 diabetes (T2D) is a major public health concern of growing proportions. Prevention, therefore, is critical. Unfortunately, standard-of-care treatment for T2D prevention (e.

View Article and Find Full Text PDF

Chlorinated gymnastatin and dankastatin alkaloids derived from the fungal strain have been reported to possess significant anti-cancer activity but their mode of action is unknown. These members possess electrophilic functional groups that may undergo covalent bond formation with specific proteins to exert their biological activity. To better understand the mechanism of action of this class of natural products, we mapped the proteome-wide cysteine-reactivity of the most potent of these alkaloids, dankastatin B, using activitybased protein profiling chemoproteomic approaches.

View Article and Find Full Text PDF

Background: Metabolic disease risk in youth is influenced by sedentary behaviors. Acute in-lab studies show that, during a single day, interrupting a sedentary period with short bouts of physical activity improves glucometabolic outcomes.

Objective: To determine if acutely improved glucose metabolism persists after multi-day interruptions of sitting with walking brief bouts.

View Article and Find Full Text PDF

Introduction/purpose: In the United States, it is recommended that schools provide at least 20 minutes of daily recess, but the optimal amount for health benefits is unknown. We examined associations between amount of recess and health indicators using National Health and Nutrition Examination Survey data (NHANES; 2013-2016).

Methods: For this cross-sectional analysis, parents/guardians of 6-11 year olds (n=738) reported recess provision which was classified as low (22.

View Article and Find Full Text PDF
Article Synopsis
  • - The study aimed to investigate how body fat (adiposity) and cardiorespiratory fitness (CRF) relate to the structure and function of arteries in children and teens aged 5-17.9 years.
  • - Researchers reviewed 99 studies, mainly showing inconsistent or non-significant results regarding the impact of body fat on arterial health, though some suggested that higher abdominal fat may lead to worse arterial outcomes.
  • - The findings highlight a lack of strong evidence about the relationship between CRF and arterial health, recommending future research to further explore these connections, especially in youth with different body fat and fitness levels.
View Article and Find Full Text PDF

Studies from both humans and animal models indicated that maternal chronic poor-quality diet, especially a high fat diet (HFD), is significantly associated with reduced bone density and childhood fractures in offspring. When previously studied in a rat model, our data suggested that maternal HFD changes epigenetic marks such as DNA methylation and histone modifications to control osteoblast metabolism. In mouse embryonic and postnatal offspring bone samples, a ChIP-sequencing (ChIP-Seq)-based genome-wide method was used to locate the repressive histone mark H3K27me3 (mediated via the polycomb histone methyltransferase, ) and expressive histone mark H3K27ac ( mediated) throughout the genome.

View Article and Find Full Text PDF

Background: Childhood obesity prevention interventions routinely focus on changing maternal parenting practices. Failure to assess how fathers' weight-related (ie, diet and physical activity) parenting practices contribute to children's energy balance behaviors limits the understanding of their paternal role within the family. Examining the independent and interacting effects of fathers' and mothers' weight-related parenting practices on children's diet and physical activity addresses this important research gap.

View Article and Find Full Text PDF

Purpose Of Review: Sedentary behaviors (SB) after cancer diagnosis are associated with poor prognosis for certain cancers, and cancer patients and survivors report high levels of SB. Reducing SB may be a feasible and effective intervention strategy to improve outcomes. This systematic review aims to identify and evaluate the literature on interventions to reduce SB in cancer patients and survivors.

View Article and Find Full Text PDF

Understanding associations between mothers' and children's physical activity and sedentary behavior on more fine-grained timescales can provide insights into real-time intervention opportunities. This study examined the extent to which mothers' and their children's device-measured moderate-to-vigorous physical activity (MVPA) and sedentary time (SDT) were associated at the day level during non-school time. Mother-child dyads (N = 193; baseline Mean ages = 40.

View Article and Find Full Text PDF

Smoking-related weight control expectancies are a motivational factor for maintaining cigarette use, particularly among women. Yet, less research has investigated the physiological and behavioral daily life weight-related experiences of women with smoking-related weight control expectancies. Increased research could contribute to understanding of maintenance factors for this group of smokers as well as unique intervention targets.

View Article and Find Full Text PDF

Background: Previous studies on affective state-sedentary behavior (SB) associations have not accounted for their potentially time-varying nature and have used inconsistent SB measurement modalities. We investigated whether the strength of the associations between affective states and SB varied as a function of the time of day and by SB measurement modality (device-measured SB vs ecological momentary assessment-reported screen-based SB) in youth.

Objective: This study aimed to establish a proof of concept that SB-affective state associations may not be static during the day.

View Article and Find Full Text PDF
Article Synopsis
  • The study explored how factors like education, employment, and household dynamics affect daily patterns of physical activity and sedentary behavior in mothers of school-aged children.* -
  • Using accelerometers, researchers collected data from 200 mothers over six periods, focusing on metrics like minutes of moderate-to-vigorous physical activity (MVPA) and sedentary time.* -
  • Results indicated that having a college degree led to less activity and more sedentary time, while full-time employment increased MVPA bouts, showing that individual circumstances significantly influence activity patterns.*
View Article and Find Full Text PDF

Photoaffinity labeling (PAL) is a powerful tool for the identification of non-covalent small molecule-protein interactions that are critical to drug discovery and medicinal chemistry, but this approach is limited to only a small subset of robust photocrosslinkers. The identification of new photoreactive motifs capable of covalent target capture is therefore highly desirable. Herein, we report the design, synthesis, and evaluation of a new class of PAL warheads based on the UV-triggered 1,2-photo-Brook rearrangement of acyl silanes, which hitherto have not been explored for PAL workflows.

View Article and Find Full Text PDF

Previous studies among adolescents conceptualize behavioral cognitions [e.g., intentions and perceived behavioral control (PBC)] as stable trait-like factors despite evidence suggesting they vary momentarily.

View Article and Find Full Text PDF
Article Synopsis
  • The study explored how changes in sedentary behavior patterns relate to symptoms of major depressive disorder and generalized anxiety disorder in children over three years.
  • It involved 167 children, using accelerometers to track sedentary time and assessments for depression and anxiety symptoms.
  • Findings indicated that higher depressive symptoms at age 11 were linked to fewer sedentary breaks, while higher anxiety symptoms were associated with longer sedentary bouts; thus, fluctuations in mental health symptoms may influence sedentary behavior, suggesting a need for targeted interventions.
View Article and Find Full Text PDF

Many diseases are driven by proteins that are aberrantly ubiquitinated and degraded. These diseases would be therapeutically benefited by targeted protein stabilization (TPS). Here we present deubiquitinase-targeting chimeras (DUBTACs), heterobifunctional small molecules consisting of a deubiquitinase recruiter linked to a protein-targeting ligand, to stabilize the levels of specific proteins degraded in a ubiquitin-dependent manner.

View Article and Find Full Text PDF

: Whether affective states acutely predict the hypothalamic-pituitary-adrenal (HPA) axis activities and whether energy balance-related behaviors moderate the affect-HPA axis relationship in obese youths are not well-understood. : 87 mostly obese (94.3% obese) minority adolescents (mean: 16.

View Article and Find Full Text PDF

The (SIX) family of transcription factors are key regulators of developmental processes during embryogenesis. Members of this family control gene expression to promote self-renewal of progenitor cell populations and govern mechanisms of cell differentiation. When the function of genes becomes disrupted, distinct congenital defects develops both in animal models and humans.

View Article and Find Full Text PDF