Publications by authors named "Walker W"

Article Synopsis
  • - Low back pain (LBP) is a significant issue globally, particularly noted as the leading cause of disability in developed countries, but its prevalence and impact in rural areas of the developing world, such as Southeastern Ghana, is less understood.
  • - A study conducted in a primary care clinic in rural Ghana involved 684 adult patients, finding an overall LBP prevalence of 15.7%, with activities like standing and walking being most affected.
  • - Results indicated that while LBP causes notable disability, with 10.3% classified as "crippled," its prevalence in rural Ghana is lower compared to developed nations and urban areas in the developing world, highlighting the need for better screening and treatment strategies.
View Article and Find Full Text PDF

Objective: To examine the predictive ability of depression when considering long-term employment outcomes for individuals with moderate-to-severe traumatic brain injury (TBI) after controlling for key preinjury and injury-related variables.

Design: Secondary data analysis.

Setting: Community follow-up after discharge from an inpatient rehabilitation center.

View Article and Find Full Text PDF

Initial colonizing bacteria play a critical role in completing the development of the immune system in the gastrointestinal tract of infants. Yet, the interaction of colonizing bacterial organisms with the developing human intestine favors inflammation over immune homeostasis. This characteristic of bacterial-intestinal interaction partially contributes to the pathogenesis of necrotizing enterocolitis (NEC), a devastating premature infant intestinal inflammatory disease.

View Article and Find Full Text PDF

Since the 1970s, The University of Texas at El Paso and El Paso Water have had a synergistic university-utility partnership, and in 2002, we began a sequence of investigations of enhanced recovery of water from silica-saturated reverse osmosis concentrate: (a) two-pass nanofiltration (NF) and reverse osmosis (RO) treatment, (b) lime softening for silica removal, (c) vibratory shear enhanced processing (VSEP), (d) continuous-flow seawater RO treatment of brackish RO concentrate, and finally (e) high-recovery concentrate enhanced-recovery reverse osmosis (CERRO) process. Studies funded by El Paso Water, Texas Water Development Board, U.S.

View Article and Find Full Text PDF

Objective: Determine incidence and predictors of comorbid cerebrovascular injuries in patients with moderate to severe traumatic brain injury (TBI) and whether it influences rehabilitation outcomes.

Setting: Inpatient Rehabilitation Facility (IRF) brain injury unit participating in NIDILRR TBI Model Systems (TBIMS).

Participants: A total of 663 patients with moderate to severe TBI.

View Article and Find Full Text PDF

Sleep is essential for health. Indeed, poor sleep is consistently linked to the development of systemic disease, including depression, metabolic syndrome, and cognitive impairments. Further evidence has accumulated suggesting the role of sleep in cancer initiation and progression (primarily breast cancer).

View Article and Find Full Text PDF

Deceased organ donation represents a major source of organs for human transplantation practice. In the United Kingdom, as well as other parts of the world, donation after circulatory death accounts for a proportion of all deceased organ donors. Organ and tissue donation emotively takes place in the context of dying, death and bereavement, yet little is known about the family experience of donation after circulatory death.

View Article and Find Full Text PDF

Artificial light at night (LAN) is a pervasive phenomenon in today's society, and the detrimental consequences of LAN exposure are becoming apparent. LAN is associated with the increased incidence of metabolic disorders, cancers, mood alterations, and immune dysfunction in mammals. Consequently, we examined the effects of dim LAN (DLAN) on wound healing.

View Article and Find Full Text PDF

The advent and wide-spread adoption of electric lighting over the past century has profoundly affected the circadian organization of physiology and behavior for many individuals in industrialized nations; electric lighting in homes, work environments, and public areas have extended daytime activities into the evening, thus, increasing night-time exposure to light. Although initially assumed to be innocuous, chronic exposure to light at night (LAN) is now associated with increased incidence of cancer, metabolic disorders, and affective problems in humans. However, little is known about potential acute effects of LAN.

View Article and Find Full Text PDF

Background: Deciphering the molecular mechanisms mediating the chemical senses, taste, and smell has been of vital importance for understanding the nature of how insects interact with their chemical environment. Several gene families are implicated in the uptake, recognition, and termination of chemical signaling, including binding proteins, chemosensory receptors and degrading enzymes. The cotton leafworm, Spodoptera littoralis, is a phytophagous pest and current focal species for insect chemical ecology and neuroethology.

View Article and Find Full Text PDF

Conventional B-mode ultrasound imaging assumes that targets consist of collections of point scatterers. Diffraction, however, presents a fundamental limit on a scanner's ability to resolve individual scatterers in most clinical imaging environments. Well-known optics and ultrasound literature has characterized these diffuse scattering targets as spatially incoherent and statistically stationary.

View Article and Find Full Text PDF

Polycystic ovarian syndrome (PCOS) is known as one of the most frequent endocrine diseases in women worldwide. However, this term does not completely capture the diversity of clinical signs associated with this syndrome e.g.

View Article and Find Full Text PDF

Background: The option of family presence during resuscitation was first presented in the late 1980s. Discussion and debate about the pros and cons of this practice has led to an abundant body of international research.

Aim: To determine critical care nurses' experiences of, and support for family presence during adult and paediatric resuscitation and their views on the positive and negative effects of this practice.

View Article and Find Full Text PDF

Toxic epidermal necrolysis (TEN) and Stevens-Johnson syndrome (SJS) are characterized by widespread skin and mucosal blistering and necrosis. The triggers and long-term sequelae in children may differ from those reported for adults. Bronchiolitis obliterans (BO) is an uncommon complication, with only 15 previously reported cases, but can lead to significant long-term morbidity, requiring lung transplantation in some cases.

View Article and Find Full Text PDF

Introduction: Family members of critically ill patients suffer from high levels of anxiety and depression in the ICU, and are at risk of developing post-ICU syndrome following ICU discharge. In the case of brain death, and potential organ donation, the family is at the center of the decision process: within a limited time frame, the family will be informed that the patient is brain-dead and will be approached about potential organ donation.

Materials And Methods: Family experience with organ donation has been the topic of several research papers allowing one to gain knowledge about family members' experience of organ donation, emphasizing specific needs, adequate support, and pointing out gaps in current delivery of family-centered care.

View Article and Find Full Text PDF

Learned behavioral responses to sounds depend largely on the expected outcomes associated with each potential choice. Where and how the nervous system integrates expectations about reward with auditory sensory information to drive appropriate decisions is not fully understood. Using a two-alternative choice task in which the expected reward associated with each sound varied over time, we investigated potential sites along the corticostriatal pathway for the integration of sound signals, behavioral choice, and reward information in male mice.

View Article and Find Full Text PDF

Purpose: The lifetime risk of renal damage in children with spina bifida is high but only limited baseline imaging data are available for this population. We evaluated a large prospective cohort of infants with spina bifida to define their baseline imaging characteristics.

Materials And Methods: The UMPIRE Protocol for Young Children with Spina Bifida is an iterative quality improvement protocol that follows a cohort of newborns at 9 United States centers.

View Article and Find Full Text PDF

Background: Tumor orchestrated metabolic changes in the microenvironment limit generation of anti-tumor immune responses. Availability of arginine, a semi-essential amino acid, is critical for lymphocyte proliferation and function. Levels of arginine are regulated by the enzymes arginase 1,2 and nitric oxide synthase (NOS).

View Article and Find Full Text PDF

Objective: To study the predictive relationship among persons with traumatic brain injury (TBI) between an objective indicator of injury severity (the adapted Marshall computed tomography [CT] classification scheme) and clinical indicators of injury severity in the acute phase, functional outcomes at inpatient rehabilitation discharge, and functional and participation outcomes at 1 year after injury, including death.

Participants: The sample involved 4895 individuals who received inpatient rehabilitation following acute hospitalization for TBI and were enrolled in the Traumatic Brain Injury Model Systems National Database between 1989 and 2014.

Design: Head CT variables for each person were fit into adapted Marshall CT classification categories I through IV.

View Article and Find Full Text PDF

The Hansen critique centers on the lack of spatial agreement between two very different datasets. Nonetheless, properly constructed comparisons designed to reconcile the two datasets yield up to 90% agreement (e.g.

View Article and Find Full Text PDF