In Africa, humans and large carnivores compete over access to resources, including prey. Disturbance by humans to kills made by carnivores, often for purposes of obtaining all or portions of the carcass, constitutes a form of human-wildlife conflict. However the occurrence of this practice, known as human kleptoparasitism, and its impact on carnivores has received little scientific attention.
View Article and Find Full Text PDFSub-Saharan Africa is under-represented in global biodiversity datasets, particularly regarding the impact of land use on species' population abundances. Drawing on recent advances in expert elicitation to ensure data consistency, 200 experts were convened using a modified-Delphi process to estimate 'intactness scores': the remaining proportion of an 'intact' reference population of a species group in a particular land use, on a scale from 0 (no remaining individuals) to 1 (same abundance as the reference) and, in rare cases, to 2 (populations that thrive in human-modified landscapes). The resulting bii4africa dataset contains intactness scores representing terrestrial vertebrates (tetrapods: ±5,400 amphibians, reptiles, birds, mammals) and vascular plants (±45,000 forbs, graminoids, trees, shrubs) in sub-Saharan Africa across the region's major land uses (urban, cropland, rangeland, plantation, protected, etc.
View Article and Find Full Text PDFSialic acid-binding immunoglobulin-type lectins (Siglecs) are a family of immunoglobulin-type lectins that mediate protein-carbohydrate interactions via sialic acids attached to glycoproteins or glycolipids. Most of the CD33-related Siglecs (CD33rSiglecs), a major subfamily of rapidly evolving Siglecs, contain a cytoplasmic signaling domain consisting of the immunoreceptor tyrosine-based inhibitory motif (ITIM) and immunoreceptor tyrosine-based switch motif (ITSM) and mediate suppressive signals for lymphoid and myeloid cells. While most CD33rSiglecs are expressed by innate immune cells, such as monocytes and neutrophils, to date, the expression of Siglecs in human T cells has not been well appreciated.
View Article and Find Full Text PDFDetermining the incidence and causes of craniodental damage in wild carnivores is often constrained by limited access to specimens with associated ecological data, such as prey type and abundance. We assessed dental condition and cranial injuries in lion, leopard, and spotted hyena in relation to prey and predator populations in Zambia's Luangwa Valley, where large prey are more abundant and lion and leopard more numerous, and the Greater Kafue Ecosystem, where smaller prey species are more prevalent and lion and leopard less common. In Luangwa, lions had significantly higher rates of tooth fracture, and blunt trauma injuries attributable to prey-handling, compared to Kafue lions.
View Article and Find Full Text PDFType I interferons (IFNs) inhibit angiogenesis, the sprouting of new blood vessels, during tissue development, remodeling, and tumor growth. One of the major targets type I IFNs inhibit are circulating monocytes, which promote vascular development by secreting growth factors, chemokines, and proteases. This study tested the hypothesis that IFN-β directly inhibits monocyte chemotaxis towards VEGF.
View Article and Find Full Text PDFDirect comparisons between historical and contemporary populations allow for detecting changes in genetic diversity through time and assessment of the impact of habitat fragmentation. Here, we determined the genetic architecture of both historical and modern lions to document changes in genetic diversity over the last century. We surveyed microsatellite and mitochondrial genome variation from 143 high-quality museum specimens of known provenance, allowing us to directly compare this information with data from several recently published nuclear and mitochondrial studies.
View Article and Find Full Text PDFObjective: Uterine leiomyomata are a frequent indication for women seeking gynecologic care [1]. The objective of our study was to assess whether patient knowledge about leiomyomata, anxiety, or satisfaction with counseling differed in patients who received multimedia counseling versus standard counseling.
Methods: Women with leiomyomata who presented to the gynecology clinic at a single institution were randomized to standard counseling or multimedia counseling using the drawMD OB/GYN iPad™ application.
The Luangwa Valley in eastern Zambia is a transverse offshoot of the Great Rift Valley system. This region appears to have an isolating effect as evidenced by suspected endemic subspecies, such as the Cookson's wildebeest and Thornicroft's giraffe. Recent mitochondrial DNA studies demonstrated that African lions in Zambia consist of two highly diverse eastern and western sub-populations.
View Article and Find Full Text PDFIt has been generally considered that the perinatal immune system is less inflammatory compared to the adult system and type 2 responses predominate perinatal immune responses against antigens. Indeed, previous studies in mice showed that there are cell-intrinsic differences between neonatal and adult CD4T cells. However, studies on human cord blood and infant blood demonstrated that human perinatal T cells do not produce elevated levels of Th2 cytokines with the exception of IL-13.
View Article and Find Full Text PDFImproved age estimation of African lions Panthera leo is needed to address a number of pressing conservation issues. Here we present a formula for estimating lion age to within six months of known age based on measuring the extent of pulp closure from X-rays, or Ratio Of tooth AReas (ROAR). Derived from measurements taken from lions aged 3-13 years for which exact ages were known, the formula explains 92% of the total variance.
View Article and Find Full Text PDFAnalysis of DNA sequence diversity at the 12S to 16S mitochondrial genes of 165 African lions (Panthera leo) from five main areas in Zambia has uncovered haplotypes which link Southern Africa with East Africa. Phylogenetic analysis suggests Zambia may serve as a bridge connecting the lion populations in southern Africa to eastern Africa, supporting earlier hypotheses that eastern-southern Africa may represent the evolutionary cradle for the species. Overall gene diversity throughout the Zambian lion population was 0.
View Article and Find Full Text PDFThe evolutionary history of a species is key for understanding the taxonomy and for the design of effective management strategies for species conservation. The knowledge about the phylogenetic position of the lion (Panthera leo) in West/Central Africa is largely based on mitochondrial markers. Previous studies using mtDNA only have shown this region to hold a distinct evolutionary lineage.
View Article and Find Full Text PDFSport hunting has reportedly multiple benefits to economies and local communities; however, few of these benefits have been quantified. As part of their lease agreements with the Zambia Wildlife Authority, sport hunting operators in Zambia are required to provide annually to local communities free of charge i.e.
View Article and Find Full Text PDFJ Low Genit Tract Dis
April 2014
Objectives: To determine whether the 2011 electronic health record (EHR) changes led to improved compliance with cervical cancer screening and management of abnormal results in adolescent (<21 y) patients.
Materials And Methods: Two EHR prompts were implemented in May 2011. The first is a bright yellow alert that pops up whenever a Pap test is ordered in a patient younger than 21 years, recommending against routine screening.
Objective: To determine whether compliance with guidelines for cervical cancer screening, particularly use of the human papillomavirus (HPV) test in adult (aged ≥21 y) women, improves with the implementation of educational prompts in the electronic health record (EHR).
Materials And Methods: Two EHR-based interventions aimed at reducing unindicated HPV tests were implemented in the EHR in late June 2010. The Pap order form was revised with a descriptor next to the cotest (Pap plus HPV test) option advising that this is not for screening in women younger than 30 years, and a link to the American Society for Colposcopy and Cervical Pathology Web site was made available on the EHR home page.
Objective: This study aimed to determine whether electronic medical record (EMR)-based tools influence providers' compliance with guidelines for cervical cancer screening in adolescent (<21 y) patients.
Materials And Methods: Three EMR-based tools to educate providers on cervical cancer screening guidelines were implemented midyear in 2010. Charts of adolescents with Pap and/or human papillomavirus results from January to December 2010 were reviewed.
Putting patients at the center of health care is the basic premise of the Patient Centered Medical Home (PCMH). Our clinic, the Family Medical Center (FMC) is located at the University of Arkansas for Medical Sciences campus and has over 23,000 annual patient visits. In 2008, we decided to apply for the National Committee for Quality Assurance' (NCQA) PCMH recognition and had made several process changes at our clinic to meet the requirements.
View Article and Find Full Text PDFUnlike Oceanic islands, the islands of the Arctic Sea are not completely isolated from migration by terrestrial vertebrates. The pack ice connects many Arctic Sea islands to the mainland during winter months. The Arctic fox (Alopex lagopus), which has a circumpolar distribution, populates numerous islands in the Arctic Sea.
View Article and Find Full Text PDFObjective: The purpose of this study was to assess the accuracy of maternal recall of key events during their most recent delivery.
Study Design: After institutional review board approval, women who were delivered at Loyola University Medical Center were recruited. Patients were asked a maximum of 13 questions about major labor management events that were applicable to the course of their delivery.