Publications by authors named "Howell K"

Palm wine is an alcoholic beverage that has existed for centuries and has important economic and socio-culture values in many tropical and sub-tropical countries. Lesser known than other types of wines, palm wine is made by spontaneous fermentation of palm sap by naturally occurring microbial communities. The palm sap ecosystem has unique microbial composition and diversity, which determines the composition of the eventual wine and is likely affected by geographical distinctiveness.

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Recent studies have revealed a role for zinc in insulin secretion and glucose homeostasis. Randomized placebo-controlled zinc supplementation trials have demonstrated improved glycemic traits in patients with type II diabetes (T2D). Moreover, rare loss-of-function variants in the zinc efflux transporter reduce T2D risk.

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Community violence (CV) is associated with negative psychosocial outcomes, such as posttraumatic stress symptoms (PTSS) and anger; however, many individuals also exhibit resilience. Considering the multifinality of outcomes following CV and guided by Bronfenbrenner's ecological systems framework, the current study sought to examine individual, microsystem, and exosystem level factors in relation to PTSS, anger, and resilience. Participants were 536 emerging adults ( = 20.

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Article Synopsis
  • Exposure to direct and intergenerational adversity can lead to increased depressive symptoms in Black adolescents, who are particularly vulnerable due to systemic racism and stress, yet many do not develop mental health issues.
  • The study involved 141 Black adolescents (ages 11-17) and assessed factors like internal assets, mother-adolescent communication, and community support to understand their protective roles against depression.
  • Results showed that less exposure to adversity, stronger internal assets, and effective communication with mothers were linked to fewer depressive symptoms, suggesting that improving family communication and personal strengths could help mitigate depression in Black youth.
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  • Combining data from different satellite sensors is crucial for accurately understanding methane emission trends and uncertainties, but this requires a thorough characterization of the probability of detection (POD), which can be expensive and time-consuming.
  • Recent aerial surveys in August 2023 aimed to synchronize with NASA's EMIT observations to assess detection limits and to create a framework for combining multiple sensors, highlighting the importance of accurate POD assessment to avoid underestimating emissions from persistent sources.
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Depression, disrupted sleep and pain are common comorbidities in sickle cell disease. We tested (1) if these comorbidities are associated with attention/executive functioning, processing speed and instrumental activities of daily living (IADLs), which describe complex skills that support independence, and (2) if cognitive symptoms mediate the relationship between comorbidities and IADLs. Participants (n = 2417) completed patient-reported outcome measures through the Sickle Cell Disease Implementation Consortium.

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Enhancing predictive modeling accuracy in wheat (Triticum aestivum) breeding through the integration of high-throughput phenotyping (HTP) data with genomic information is crucial for maximizing genetic gain. In this study, spanning four locations in the southeastern United States over 3 years, models to predict grain yield (GY) were investigated through different cross-validation approaches. The results demonstrate the superiority of multivariate comprehensive models that incorporate both genomic and HTP data, particularly in accurately predicting GY across diverse locations and years.

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Saliva influences the release of aroma in the oral cavity. The composition of human saliva varies depending on stimulation and host's origin; however, the compositional differences of saliva and their influences on aroma release have not been fully evaluated. In this study, we recruited 30 healthy adults (15 Australians and 15 Chinese) and collected saliva samples at three stages: before, during, and after stimulation.

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The limited translatability of preclinical experimental findings to patients remains an obstacle for successful treatment of brain diseases. Relevant models to elucidate mechanisms behind brain pathogenesis, including cell-specific contributions and cell-cell interactions, and support successful targeting and prediction of drug responses in humans are urgently needed, given the species differences in brain and blood-brain barrier (BBB) functions. Human microphysiological systems (MPS), such as Organ-Chips, are emerging as a promising approach to address these challenges.

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We explored associations between multisystemic resilience and anxious-depressed symptoms in Black families experiencing maternal syndemics (i.e., co-occurring epidemics of substance abuse, violence, HIV/AIDS), using a sequential explanatory study design.

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Anti-bacterial monoclonal antibody (mAb) therapies either rely on toxin neutralization or opsonophagocytic killing (OPK). Toxin neutralization protects the host from toxin-induced damage, while leaving the organism intact. OPK inducing antibodies clear the bacteria but leave the released toxins unencountered.

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Intimate partner violence (IPV) during pregnancy negatively affects both maternal and infant health, yet gaps remain in understanding factors that maintain violence and/or promote resilience within the context of mothering. Nine focus groups were conducted with pregnant and/or IPV-exposed women ( 17) and service providers ( =  26) working with these women in Nuevo León, Mexico. Thematic analysis of the focus group data revealed the detrimental impact of cultural norms that prioritize the relationship with women's partners, marriage, and family above women's dignity.

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Background: Despite increasing breastfeeding initiation rates in the United States, disparities in breastfeeding continuation and exclusivity by race and ethnicity persist.

Research Aim: We aimed to understand the perceptions and experiences of Latina parents who received access to telelactation, and assessed the implications of integrating telelactation into pediatric settings.

Methods: This cross-sectional qualitative study drew from participants enrolled in a randomized controlled trial about breastfeeding support.

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Background: Cancer therapies predispose survivors to a high symptom burden. This study utilized mobile health (mHealth) technology to assess the feasibility of collecting daily symptoms from adult survivors of childhood cancer to evaluate symptom fluctuation and associations with future health-related quality-of-life (HRQOL).

Methods: This prospective study used an mHealth platform to distribute a 20-item cancer-related symptom survey (5 consecutive days each month) and an HRQOL survey (the day after the symptom survey) over 3 consecutive months to participants from the Childhood Cancer Survivor Study.

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Mild malformation of cortical development with oligodendroglial hyperplasia in epilepsy (MOGHE) is an important cause of drug-resistant epilepsy. A significant subset of individuals diagnosed with MOGHE display somatic mosaicism for loss-of-function variants in SLC35A2, which encodes the UDP-galactose transporter. We developed a mouse model to investigate how disruption of this transporter leads to a malformation of cortical development.

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Objective: We utilized the National Cancer Database (NCDB) to evaluate trends and assess outcomes in radiation therapy (RT) boost modality and total dose among medically inoperable endometrial cancer (EC) patients with locoregional disease.

Methods: Patients with International Federation of Gynecology and Obstetrics (FIGO) stage I - IIIC2 inoperable EC treated with RT ± chemotherapy were analyzed. Practice patterns compared external beam RT (EBRT) versus high-dose-rate brachytherapy (BT) boost and total RT dose (palliative: ≤3000 cGy, definitive low dose [DLD]: 4500 - 6249 cGy, definitive high dose [DHD]: ≥6250 cGy) over time.

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Objective: To understand the etiological landscape and phenotypic differences between 2 developmental and epileptic encephalopathy (DEE) syndromes: DEE with spike-wave activation in sleep (DEE-SWAS) and epileptic encephalopathy with spike-wave activation in sleep (EE-SWAS).

Methods: All patients fulfilled International League Against Epilepsy (ILAE) DEE-SWAS or EE-SWAS criteria with a Core cohort (n = 91) drawn from our Epilepsy Genetics research program, together with 10 etiologically solved patients referred by collaborators in the Expanded cohort (n = 101). Detailed phenotyping and analysis of molecular genetic results were performed.

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Background: The etiology of anemia has tremendous overlap with the disease states responsible for cognitive decline. We used data from a perioperative database of older adults undergoing elective surgery with anesthesia to (1) examine relationships among preoperative anemia blood markers, preoperative screeners of cognitive function, and chronic disease status; and (2) examine the relationship of these factors with operative outcomes. The primary goal of this study was to investigate the association between preoperative anemia blood markers and cognition measured by a preoperative cognitive screener.

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The death of a loved one can have harmful effects on children's mental health, yet some bereaved children exhibit resilience. Various caregiver and child coping strategies, including active and avoidant coping, may affect the psychosocial functioning of bereaved children. The current study recruited 78 bereaved children aged 8-17 and one of their caregivers to explore: 1) how caregivers' coping strategies affect their child's coping strategies and resilience, and 2) associations between children's coping and their resilience.

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Article Synopsis
  • SCN2A gene-related early-infantile developmental and epileptic encephalopathy (EI-DEE) is a serious rare disorder caused by mutations affecting the Nav1.2 sodium channel, leading to abnormal neuronal activity in infants.
  • The study examined seven specific mutations of the Nav1.2 channel, using techniques like molecular dynamics and electrophysiology, to understand how these mutations impact fast inactivation of the channel.
  • Notably, the N1662D mutation severely hinders fast inactivation, highlighting the importance of interactions between amino acids N1662 and Q1494, while other mutations showed varying effects on channel function, including some that enhanced neuronal excitability.
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Purpose: The prone transpsoas approach is a single-position alternative to traditional lateral lumbar interbody fusion (LLIF). Earlier prone LLIF studies have focused on technique, feasibility, perioperative efficiencies, and immediate postoperative radiographic alignment. This study was undertaken to report longer-term clinical and radiographic outcomes, and to identify learnings from experiential evolution of the prone LLIF procedure.

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The study aimed to evaluate the impact of BEMER (Physical Vascular Therapy) on body surface temperature using infrared thermography (IRT) in the distal parts of the forelimbs in Thoroughbreds. The study tested the hypothesis that BEMER therapy leads to an increase in body surface temperature and blood vessel diameter in the distal parts of the forelimbs. The study involved 16 horses, split into 2 groups: active BEMER ( = 8) and sham ( = 8).

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Introduction: Infantile epileptic spasms syndrome (IESS) is a common developmental and epileptic encephalopathy with poor long-term outcomes. A substantial proportion of patients with IESS have a potentially surgically remediable etiology. Despite this, epilepsy surgery is underutilized in this patient group.

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Guidelines recommend transfer to adult health care within 6 months of completing pediatric care; however, this has not been studied in sickle cell disease (SCD). We hypothesized that longer transfer gaps are associated with increased resource utilization. Transfer gaps were defined as the time between the last pediatric and first adult visits.

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