Publications by authors named "Katharine Hall"

Unlabelled: Anellovirus infections are ubiquitous in mammals but lack any clear disease association, suggesting a commensal virus-host relationship. Although anelloviruses have been identified in numerous mammalian hosts, their presence in members of the family Delphinidae has yet to be reported. Here, using a metagenomic approach, we characterize complete anellovirus genomes ( = 69) from four Delphinidae host species: short-finned pilot whale (, = 19), killer whale (, = 9), false killer whale (, = 6), and pantropical spotted dolphin (, = 1).

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Members of the Delphinidae family are widely distributed across the world's oceans. We used a viral metagenomic approach to identify viruses in orca (Orcinus orca) and short-finned pilot whale (Globicephala macrorhynchus) muscle, kidney, and liver samples from deceased animals. From orca tissue samples (muscle, kidney, and liver), we identified a novel polyomavirus (Polyomaviridae), three cressdnaviruses, and two genomoviruses (Genomoviridae).

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Background: Secondhand smoke exposure increases morbidity and mortality in children. Thirty-one percent of caregivers who accompany their children to the Ochsner Health Center for Children smoke, and none uses the services of the Smoking Cessation Trust (SCT), a free smoking cessation program for eligible Louisiana residents who began smoking before 1988. The objective of this study was 2-fold: first, to assess and compare pediatricians' confidence and behaviors in regard to smoking cessation promotion with caregivers, and second, to determine pediatricians' knowledge and comfort level with the SCT.

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Background: A pilot study was conducted to determine whether the caregivers of children being seen at the Ochsner for Children health center were eligible for and using services provided by the Smoking Cessation Trust (SCT).

Methods: The study population consisted of pediatric patients' caregivers who visit the Ochsner for Children health center. Caregivers were offered a questionnaire to assess their age, sex, relationship to the child, medical insurance, smoking status, and prior cessation attempts and aids.

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Objectives: It is unclear whether community treatment orders (CTOs) for people with severe mental illnesses can reduce health service use, or improve clinical and social outcomes. Randomized controlled trials of CTOs are rare because of ethical and logistical concerns. This meta-analysis updates available evidence.

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Regular exercise has been shown to improve many complications of Type 1 diabetes mellitus (T1DM) including enhanced glucose tolerance and increased cardiac function. While exercise training has been shown to increase insulin content in pancreatic islets of rats with T1DM, experimental models were severely hyperglycemic and not undergoing insulin treatment. Further, research to date has yet to determine how exercise training alters glucagon content in pancreatic islets.

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While regular exercise is known to improve cardiovascular function, individuals with type 1 diabetes mellitus (T1DM) have an increased risk for exercise-induced hypoglycemia. Clinical data suggest that higher intensities of acute exercise may alleviate the onset of hypoglycemia; however, the cardiovascular benefit from these forms of exercise in patients with T1DM has yet to be established. The purpose of this study was to investigate the cardiovascular benefit of different regular exercise regimes, while monitoring blood glucose concentrations during the post-exercise period.

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Unlabelled: Individuals with Type 1 Diabetes Mellitus (T1DM) can develop insulin resistance. Regular exercise may improve insulin resistance partially through increased expression of skeletal muscle GLUT4 content.

Objective: To examine if different exercise training modalities can alter glucose tolerance through changes in skeletal muscle GLUT4 content in T1DM rats.

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Article Synopsis
  • This study focused on how different types of exercise (moderate and high-intensity endurance training, and resistance training) affected blood vessel relaxation in type 1 diabetic rats over six weeks.
  • High-intensity endurance training showed the best results in improving vasorelaxation, which refers to the ability of blood vessels to relax and widen.
  • The findings suggest that the improvements in blood vessel function were closely linked to higher levels of endothelial nitric oxide synthase (e-NOS), a key enzyme involved in maintaining vascular health.
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Article Synopsis
  • - The study compared how quickly blood vessels in diabetic and control rats relax after being constricted, using phenylephrine and acetylcholine, with and without vitamin C supplementation.
  • - Results showed that the relaxation response was significantly slower in diabetic rats than in control rats, with an average adjustment time of 8.4 seconds versus 6.6 seconds.
  • - Additionally, the speed of relaxation varied by vessel type, being fastest in the femoral artery and slowest in the aorta, indicating that vessel-specific responses exist alongside the impact of diabetes on vasorelaxation.
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There is widespread concern that the number of children living in "child-headed households" is rapidly increasing as a result of AIDS-related adult mortality in much of sub-Saharan Africa. Based on analyses of data from several representative national surveys over the period 2000-2007, this paper examines the extent to which this is the case in South Africa. It explores trends in the number of children living in child-only households and characterises these children relative to children living in households with adults (mixed-generation households).

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