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https://www.readbyqxmd.com/read/28339992/rheumatoid-arthritis-specific-cardiovascular-risk-scores-are-not-superior-to-general-risk-scores-a-validation-analysis-of-patients-from-seven-countries
#1
Cynthia S Crowson, Sherine E Gabriel, Anne Grete Semb, Piet L C M van Riel, George Karpouzas, Patrick H Dessein, Carol Hitchon, Virginia Pascual-Ramos, George D Kitas
Objectives.: Cardiovascular disease (CVD) risk calculators developed for the general population do not accurately predict CVD events in patients with RA. We sought to externally validate risk calculators recommended for use in patients with RA including the EULAR 1.5 multiplier, the Expanded Cardiovascular Risk Prediction Score for RA (ERS-RA) and QRISK2. Methods.: Seven RA cohorts from UK, Norway, Netherlands, USA, South Africa, Canada and Mexico were combined...
March 8, 2017: Rheumatology
https://www.readbyqxmd.com/read/28339501/mapping-global-biodiversity-connections-with-dna-barcodes-lepidoptera-of-pakistan
#2
Muhammad Ashfaq, Saleem Akhtar, Muhammad Athar Rafi, Shahid Mansoor, Paul D N Hebert
Sequences from the DNA barcode region of the mitochondrial COI gene are an effective tool for specimen identification and for the discovery of new species. The Barcode of Life Data Systems (BOLD) (www.boldsystems.org) currently hosts 4.5 million records from animals which have been assigned to more than 490,000 different Barcode Index Numbers (BINs), which serve as a proxy for species. Because a fourth of these BINs derive from Lepidoptera, BOLD has a strong capability to both identify specimens in this order and to support studies of faunal overlap...
2017: PloS One
https://www.readbyqxmd.com/read/28339497/women-s-knowledge-and-perception-of-male-circumcision-before-and-after-its-roll-out-in-the-south-african-township-of-orange-farm-from-community-based-cross-sectional-surveys
#3
Barbara Maraux, Pascale Lissouba, Reathe Rain-Taljaard, Dirk Taljaard, Julie Bouscaillou, David Lewis, Adrian Puren, Bertran Auvert
The roll-out of medical male circumcision (MC) is progressing in Southern and Eastern Africa. Little is known about the effect of this roll-out on women. The objective of this study was to assess the knowledge and perceptions of women regarding MC in a setting before and after the roll-out. This study was conducted in the South African township of Orange Farm where MC prevalence among men increased from 17% to 53% in the period 2008-2010. Data from three community-based cross sectional surveys conducted in 2007, 2010 and 2012 among 1258, 1197 and 2583 adult women, respectively were studied...
2017: PloS One
https://www.readbyqxmd.com/read/28339400/a-systematic-review-of-the-huntington-disease-like-2-phenotype
#4
David G Anderson, Ruth H Walker, Myles Connor, Jonathan Carr, Russell L Margolis, Amanda Krause
BACKGROUND: Huntington Disease-like 2 (HDL2) is a neurodegenerative disorder similar to Huntington Disease (HD) in its clinical phenotype, genetic characteristics, neuropathology and longitudinal progression. Proposed specific differences include an exclusive African ancestry, lack of eye movement abnormalities, increased Parkinsonism, and acanthocytes in HDL2. OBJECTIVE: The objective was to determine the similarities and differences between HD and HDL2 by establishing the clinical phenotype of HDL2 with the published cases...
March 21, 2017: Journal of Huntington's Disease
https://www.readbyqxmd.com/read/28335539/abundance-of-pathogenic-escherichia-coli-virulence-associated-genes-in-well-and-borehole-water-used-for-domestic-purposes-in-a-peri-urban-community-of-south-africa
#5
Akebe Luther King Abia, Lisa Schaefer, Eunice Ubomba-Jaswa, Wouter Le Roux
In the absence of pipe-borne water, many people in Africa, especially in rural communities, depend on alternative water sources such as wells, boreholes and rivers for household and personal hygiene. Poor maintenance and nearby pit latrines, however, lead to microbial pollution of these sources. We evaluated the abundance of Escherichia coli and the prevalence of pathogenic E. coli virulence genes in water from wells, boreholes and a river in a South African peri-urban community. Monthly samples were collected between August 2015 and November 2016...
March 20, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28335473/assessment-of-antioxidant-and-cytoprotective-potential-of-jatropha-jatropha-curcas-grown-in-southern-italy
#6
Teresa Papalia, Davide Barreca, Maria Rosaria Panuccio
Jatropha (Jatropha curcas L.) is a plant native of Central and South America, but widely distributed in the wild or semi-cultivated areas in Africa, India, and South East Asia. Although studies are available in literature on the polyphenolic content and bioactivity of Jatropha curcas L., no information is currently available on plants grown in pedoclimatic and soil conditions different from the autochthon regions. The aim of the present work was to characterize the antioxidant system developed by the plant under a new growing condition and to evaluate the polyphenol amount in a methanolic extract of leaves...
March 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28334030/measuring-mortality-due-to-hiv-associated-tuberculosis-among-adults-in-south-africa-comparing-verbal-autopsy-minimally-invasive-autopsy-and-research-data
#7
Aaron S Karat, Mpho Tlali, Katherine L Fielding, Salome Charalambous, Violet N Chihota, Gavin J Churchyard, Yasmeen Hanifa, Suzanne Johnson, Kerrigan McCarthy, Neil A Martinson, Tanvier Omar, Kathleen Kahn, Daniel Chandramohan, Alison D Grant
BACKGROUND: The World Health Organization (WHO) aims to reduce tuberculosis (TB) deaths by 95% by 2035; tracking progress requires accurate measurement of TB mortality. International Classification of Diseases (ICD) codes do not differentiate between HIV-associated TB and HIV more generally. Verbal autopsy (VA) is used to estimate cause of death (CoD) patterns but has mostly been validated against a suboptimal gold standard for HIV and TB. This study, conducted among HIV-positive adults, aimed to estimate the accuracy of VA in ascertaining TB and HIV CoD when compared to a reference standard derived from a variety of clinical sources including, in some, minimally-invasive autopsy (MIA)...
2017: PloS One
https://www.readbyqxmd.com/read/28334012/challenges-of-developing-a-cardiovascular-risk-calculator-for-patients-with-rheumatoid-arthritis
#8
Cynthia S Crowson, Silvia Rollefstad, George D Kitas, Piet L C M van Riel, Sherine E Gabriel, Anne Grete Semb
OBJECTIVE: Cardiovascular disease (CVD) risk calculators designed for use in the general population do not accurately predict the risk of CVD among patients with rheumatoid arthritis (RA), who are at increased risk of CVD. The process of developing risk prediction models involves numerous issues. Our goal was to develop a CVD risk calculator for patients with RA. METHODS: Thirteen cohorts of patients with RA originating from 10 different countries (UK, Norway, Netherlands, USA, Sweden, Greece, South Africa, Spain, Canada and Mexico) were combined...
2017: PloS One
https://www.readbyqxmd.com/read/28333966/associations-of-human-papillomavirus-hpv-genotypes-with-high-grade-cervical-neoplasia-cin2-in-a-cohort-of-women-living-with-hiv-in-burkina-faso-and-south-africa
#9
Helen A Kelly, Jean Ngou, Admire Chikandiwa, Bernard Sawadogo, Clare Gilham, Tanvier Omar, Olga Lompo, Sylviane Doutre, Nicolas Meda, Helen A Weiss, Sinead Delany-Moretlwe, Michel Segondy, Philippe Mayaud
OBJECTIVE: To describe associations of high-risk human papillomavirus (HR-HPV) with high-grade cervical intraepithelial neoplasia (CIN2+) in women living with HIV (WLHIV) in Burkina Faso (BF) and South Africa (SA). METHODS: Prospective cohort of WLHIV attending HIV outpatient clinics and treatment centres. Recruitment was stratified by ART status. Cervical HPV genotyping using INNO-LiPA and histological assessment of 4-quadrant cervical biopsies at enrolment and 16 months later...
2017: PloS One
https://www.readbyqxmd.com/read/28333766/dietary-inadequacies-in-hiv-infected-and-uninfected-school-aged-children-in-johannesburg-south-africa
#10
Stephanie Shiau, Acadia Webber, Renate Strehlau, Faeezah Patel, Ashraf Coovadia, Samantha Kozakowski, Susan Brodlie, Michael T Yin, Louise Kuhn, Stephen M Arpadi
OBJECTIVES: The World Health Organization (WHO) recommends that HIV-infected children increase energy intake and maintain a balanced macronutrient distribution for optimal growth and nutrition. Few studies have evaluated dietary intake of HIV-infected children in resource-limited settings. METHODS: We conducted a cross-sectional analysis of the dietary intake of 220 perinatally HIV-infected children and 220 HIV-uninfected controls ages 5-9 years in Johannesburg, South Africa...
March 22, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28333262/selection-in-europeans-on-fatty-acid-desaturases-associated-with-dietary-changes
#11
Matthew T Buckley, Fernando Racimo, Morten E Allentoft, Majken K Jensen, Anna Jonsson, Hongyan Huang, Farhad Hormozdiari, Martin Sikora, Davide Marnetto, Eleazar Eskin, Marit E Jørgensen, Niels Grarup, Oluf Pedersen, Torben Hansen, Peter Kraft, Eske Willerslev, Rasmus Nielsen
FADS genes encode fatty acid desaturases that are important for the conversion of short chain polyunsaturated fatty acids (PUFAs) to long chain fatty acids. Prior studies indicate that the FADS genes have been subjected to strong positive selection in Africa, South Asia, Greenland, and Europe. By comparing FADS sequencing data from present-day and Bronze Age (5-3k years ago) Europeans, we identify possible targets of selection in the European population, which suggest that selection has targeted different alleles in the FADS genes in Europe than it has in South Asia or Greenland...
March 16, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28333100/understanding-the-psychosocial-correlates-of-the-intention-to-use-condoms-among-young-men-in-kwazulu-natal-south-africa
#12
Thabang Manyaapelo, Anam Nyembezi, Robert A C Ruiter, Bart van den Borne, Sibusiso Sifunda, Priscilla Reddy
South Africa leads the world with the number of people infected with HIV. Even with all attempts that have been made to curb HIV, it is still evident that new infections are on the rise. Condom use remains one of the best tools against this challenge yet a small number of sexually active men use them. This study investigates the psychosocial correlates of the intention to use condoms among young men in KwaZulu-Natal province. Using the Theory of Planned Behaviour as a framework, hierarchical linear regression models were used to determine the unique contribution of the study measures in explaining the overall variance of intention to consistently use condoms...
March 23, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28332548/south-africa-s-san-people-issue-ethics-code-to-scientists
#13
Ewen Callaway
No abstract text is available yet for this article.
March 20, 2017: Nature
https://www.readbyqxmd.com/read/28332270/changes-in-elevated-cholesterol-in-the-era-of-tenofovir-in-south-africa-risk-factors-clinical-management-and-outcomes
#14
L Jamieson, D Evans, A T Brennan, F Moyo, D Spencer, K Mahomed, M Maskew, L Long, S Rosen, M P Fox
OBJECTIVES: Antiretroviral therapy (ART) has been associated with unfavourable lipid profile changes and increased risk of cardiovascular disease (CVD). With a growing population on ART in South Africa, there has been concern about the increase in noncommunicable diseases such as CVD. We determined risk factors associated with increased total cholesterol (TC) in a large cohort on ART and describe the clinical management thereof. METHODS: We conducted an observational cohort study of ART-naïve adults initiating standard first-line ART in a large urban clinic in Johannesburg, South Africa...
March 23, 2017: HIV Medicine
https://www.readbyqxmd.com/read/28331618/movement-of-leopard-tortoises-in-response-to-environmental-and-climatic-variables-in-a-semi-arid-environment
#15
Martyn Drabik-Hamshare, Colleen T Downs
BACKGROUND: Tortoises (Testudinidae) occur in a wide range of environments, providing important ecosystem functions, such as seed dispersal and refuge in the form of burrows. Tortoise movement has previously been shown to be related to resource availability, reproductive status and local environmental conditions. However, understanding of the variables that drive their movement remains comparatively low. We investigated aspects of movement in leopard tortoises Stigmochelys pardalis-the largest and most abundant tortoise species in sub-Saharan Africa-in response to environmental, climatic and individual variables in the semi-arid Karoo, South Africa...
2017: Movement Ecology
https://www.readbyqxmd.com/read/28331604/re-establishing-the-pecking-order-niche-models-reliably-predict-suitable-habitats-for-the-reintroduction-of-red-billed-oxpeckers
#16
Riddhika Kalle, Leigh Combrink, Tharmalingam Ramesh, Colleen T Downs
Distributions of avian mutualists are affected by changes in biotic interactions and environmental conditions driven directly/indirectly by human actions. The range contraction of red-billed oxpeckers (Buphagus erythrorhynchus) in South Africa is partly a result of the widespread use of acaracides (i.e., mainly cattle dips), toxic to both ticks and oxpeckers. We predicted the habitat suitability of red-billed oxpeckers in South Africa using ensemble models to assist the ongoing reintroduction efforts and to identify new reintroduction sites for population recovery...
March 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28331603/low-leopard-populations-in-protected-areas-of-maputaland-a-consequence-of-poaching-habitat-condition-abundance-of-prey-and-a-top-predator
#17
Tharmalingam Ramesh, Riddhika Kalle, Havard Rosenlund, Colleen T Downs
Identifying the primary causes affecting population densities and distribution of flagship species are necessary in developing sustainable management strategies for large carnivore conservation. We modeled drivers of spatial density of the common leopard (Panthera pardus) using a spatially explicit capture-recapture-Bayesian approach to understand their population dynamics in the Maputaland Conservation Unit, South Africa. We camera-trapped leopards in four protected areas (PAs) of varying sizes and disturbance levels covering 198 camera stations...
March 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28331541/identifying-cross-cultural-variations-in-psychostimulant-use-for-attention-deficit-hyperactivity-disorder-using-linked-data
#18
Manonita Ghosh, C D'Arcy J Holman, David B Preen
BACKGROUND: To validate the association between country-of-birth and disparities in the stimulant use for ADHD among individuals in Western Australia. METHODS: Using linked data, a population-based retrospective cohort of individuals admitted to hospital before age 25 years was followed through to identify having stimulants for ADHD in 2003-2007. Multivariate logistic and linear regressions were used to characterise associations between stimulants and country-of-birth, geographical remoteness and socioeconomic status...
2017: Child and Adolescent Psychiatry and Mental Health
https://www.readbyqxmd.com/read/28331412/a-review-of-the-pseudobarbus-afer-peters-1864-species-complex-teleostei-cyprinidae-in-the-eastern-cape-fold-ecoregion-of-south-africa
#19
Albert Chakona, Paul H Skelton
The Eastern Cape redfin, Pseudobarbus afer, has long been considered to be a single widespread and variable species occurring in multiple isolated river systems in the Cape Fold Ecoregion (CFE) at the southern tip of Africa. Mitochondrial cytochrome b and control region sequence data of individuals from populations currently assigned to Pseudobarbus afer across the species' distribution range revealed existence of four deeply divergent taxonomic units: (i) the Mandela lineage confined to the Sundays, Swartkops and Baakens river systems, (ii) the Krom lineage endemic to the Krom River system, (iii) the St Francis lineage occurring in the Gamtoos and adjacent river systems, and (iv) the Forest lineage occurring in several coastal river systems from the Tsitsikamma to the Klein Brak River system...
2017: ZooKeys
https://www.readbyqxmd.com/read/28331406/redescription-of-potamonautes-sidneyi-rathbun-1904-decapoda-potamonautidae-and-description-of-a-new-congeneric-species-from-kwazulu-natal-south-africa
#20
Nasreen Peer, Gavin Gouws, Eric Lazo-Wasem, Renzo Perissinotto, Nelson A F Miranda
A new species of freshwater crab, Potamonautes danielsisp. n., is described from the southern region of the KwaZulu-Natal Province, South Africa. Potamonautes danielsi most closely resembles Potamonautes sidneyi which is re-described here, but can be distinguished by a suite of key morphological characters including carapace shape and width, slim pereopods, inflated propodi of the chelipeds, and the shape and terminal segment length:subterminal segment length ratio of the 1(st) gonopod. In a previous study (Gouws et al...
2017: ZooKeys
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