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https://www.readbyqxmd.com/read/28738555/assessment-of-mercury-speciation-in-feathers-using-species-specific-isotope-dilution-analysis
#1
Marina Renedo, Paco Bustamante, Emmanuel Tessier, Zoyne Pedrero, Yves Cherel, David Amouroux
Seabirds are considered as effective sentinels of environmental marine contamination and their feathers are extensively used as non-lethal samples for contaminant biomonitoring. This tissue represents the main route for mercury (Hg) elimination in seabirds and contains predominantly methylmercury (MeHg). In this work, we developed a robust analytical technique for precise and accurate simultaneous quantification of MeHg, inorganic Hg (iHg) and consequently total Hg (THg), in feathers by gas-chromatography (GC)-ICPMS analyses using species-specific isotope dilution technique...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738511/litter-thickness-but-not-root-biomass-explains-the-average-and-spatial-structure-of-soil-hydraulic-conductivity-in-secondary-forests-and-coffee-agroecosystems-in-veracruz-mexico
#2
B E Marín-Castro, S Negrete-Yankelevich, D Geissert
Secondary forests and coffee agroecosystems are considered good alternatives for conservation of a high capacity for water filtration in the soil where tropical montane cloud forests (TMCF) once grew; however, it is not clear which characteristics of the vegetation modulate the field saturated hydraulic conductivity of the soil (Kfs) and whether these characteristics persist in such derived systems. Here, we explore how changes in vegetation between secondary forests and coffee agroecosystems have consequences for the average value and spatial variation of litter thickness and root biomass, and whether these differences can explain the Kfs and its spatial distribution...
July 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28738405/peripheral-vascular-disease-and-death-in-southern-european-kidney-transplant-candidates-a-competing-risk-modeling-approach-erratum
#3
(no author information available yet)
No abstract text is available yet for this article.
August 2017: Transplantation
https://www.readbyqxmd.com/read/28738301/effects-of-an-in-situ-diesel-oil-spill-on-oxidative-stress-in-the-clam-anomalocardia-flexuosa
#4
Adriana E Sardi, Paul E Renaud, Gisele C Morais, César C Martins, Paulo da Cunha Lana, Lionel Camus
Intensive exploitation and transport of oil and derivatives are increasing the risk of coastal contamination by either dramatic disasters or diffuse sources. Tools for monitoring diffuse contamination, such as diesel oil that leaks from marine vessels are much needed. We experimentally tested the efficiency of antioxidant biomarkers as indicators of chronic exposure to diesel oil in a mudflat from the subtropical Bay of Paranaguá, in southern Brazil. We examined the effects of three successive diesel oil spills, with two weeks of recovery time between exposures, on the edible clam Anomalocardia flexuosa...
July 21, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28738287/perceived-stress-and-poly-tobacco-product-use-across-adolescence-patterns-of-association-and-gender-differences
#5
Adam M Leventhal, Robert Urman, Jessica L Barrington-Trimis, Nicholas I Goldenson, Katia Gallegos, Chih Ping Chou, Kejia Wang, Kiros Berhane, Tess Boley Cruz, Mary Ann Pentz, Jennifer Unger, Rob S McConnell
Perceived stress-an endophenotype indicative of the tendency to appraise stress as frequent, unpredictable and unmanageable-is associated with adolescent cigarette smoking. It is unclear whether this association: (1) extends to alternative tobacco products, like electronic cigarettes and hookah (tobacco water pipe), which are increasingly popular among youth, and (2) differs by gender. In this report, data were drawn from a population-based longitudinal cohort of youth in Southern California. Perceived stress was assessed at baseline (7th or 8th grade; 2010)...
July 14, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28737727/patterns-associated-with-adult-mandibular-fractures-in-southern-taiwan-a-cross-sectional-retrospective-study
#6
Ko-Chien Lin, Shu-Hui Peng, Pao-Jen Kuo, Yi-Chun Chen, Cheng-Shyuan Rau, Ching-Hua Hsieh
Purpose: This study aimed to determine the patterns associated with adult mandibular fractures from a Level-I trauma center in southern Taiwan. Methods: The data of adult trauma patients admitted between 1 January 2009 and 31 December 2014 were retrieved from the Trauma Registry System and retrospectively reviewed. Fracture site and cause of injury were categorized into groups for comparison, and corresponding odds ratios (ORs) and 95% confidence intervals (CIs) were obtained by multivariate logistic regression...
July 24, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28737685/microcystin-prevalence-throughout-lentic-waterbodies-in-coastal-southern-california
#7
Meredith D A Howard, Carey Nagoda, Raphael M Kudela, Kendra Hayashi, Avery Tatters, David A Caron, Lilian Busse, Jeff Brown, Martha Sutula, Eric D Stein
Toxin producing cyanobacterial blooms have increased globally in recent decades in both frequency and intensity. Despite the recognition of this growing risk, the extent and magnitude of cyanobacterial blooms and cyanotoxin prevalence is poorly characterized in the heavily populated region of southern California. Recent assessments of lentic waterbodies (depressional wetlands, lakes, reservoirs and coastal lagoons) determined the prevalence of microcystins and, in some cases, additional cyanotoxins. Microcystins were present in all waterbody types surveyed although toxin concentrations were generally low across most habitats, as only a small number of sites exceeded California's recreational health thresholds for acute toxicity...
July 22, 2017: Toxins
https://www.readbyqxmd.com/read/28737282/discrimination-gender-and-self-reported-aesthetic-problems-among-brazilian-adults
#8
Alexandre Baumgarten, João Luiz Bastos, Ramona Fernanda Ceriotti Toassi, Juliana Balbinot Hilgert, Fernando Neves Hugo, Roger Keller Celeste
OBJECTIVES: To explore factors associated with discrimination in healthcare services and to assess whether discrimination based on dental aesthetics differs by sex. METHODS: Cross-sectional analysis based on a household survey carried out in a city in Southern Brazil. Fifteen primary health care (PHC) units with a dental team were randomly selected, and individuals who used the public services in the catchment areas of the PHC units were interviewed. The survey questionnaire included experiences with discrimination related to health services, sociodemographic and dental characteristics...
July 24, 2017: Community Dentistry and Oral Epidemiology
https://www.readbyqxmd.com/read/28736677/no-evidence-of-on-farm-circulation-of-avian-influenza-h5-subtype-in-ca-mau-province-southern-vietnam-march-2016-january-2017
#9
Nguyen Thi Le Thanh, Nguyen Ha Thao Vy, Huynh Thi Ai Xuyen, Huynh Thi Phuong, Phung Ngoc Tuyet, Nguyen Thanh Huy, Benjamin Nguyen-Van-Yen, Ha Minh Lam, Maciej F Boni
BACKGROUND: Subtype H5N1 avian influenza viruses, both high pathogenicity and low pathogenicity, have been enzootic in Vietnam since 2001.  The viruses are readily identified at live bird markets, but virus prevalence on smallholder poultry is typically zero or very low.  If the true direction of the viral transmission chain is farm to market, it is unknown why farm prevalence should be low when market prevalence is moderate to high. METHODS: We established a cohort of 50 smallholder poultry farms in Ca Mau province in the Mekong Delta region of Vietnam...
May 5, 2017: PLoS Currents
https://www.readbyqxmd.com/read/28736530/identification-and-expression-profiling-of-chemosensory-genes-in-dendrolimus-punctatus-walker
#10
Su-Fang Zhang, Hui-Hui Liu, Xiang-Bo Kong, Hong-Bin Wang, Fu Liu, Zhen Zhang
Dendrolimus punctatus Walker is a serious pest affecting conifers in southern China. As extensive pesticide spraying is currently required to control D. punctatus, new control strategies are urgently needed. Chemosensory genes represent potential molecular targets for development of alternative pest control strategies, and the expression characteristics of these genes provide an indication of their function. To date, little information is available regarding chemosensory genes in D. punctatus or their expression profiles at different development stages and in various tissues...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28736395/understanding-the-relationship-between-couple-dynamics-and-engagement-with-hiv-care-services-insights-from-a-qualitative-study-in-eastern-and-southern-africa
#11
Joyce Wamoyi, Jenny Renju, Mosa Moshabela, Estelle McLean, Daniel Nyato, Doris Mbata, Oliver Bonnington, Janet Seeley, Kathryn Church, Basia Zaba, Alison Wringe
OBJECTIVE: To explore the interplay between couple dynamics and the engagement of people living with HIV (PLHIV) with HIV care and treatment services in three health and demographic surveillance sites in Tanzania, Malawi and South Africa. METHODS: A qualitative study was conducted involving 107 in-depth interviews with PLHIV with a range of HIV care and treatment histories, including current users of HIV clinics, and people not enrolled in HIV care. Interviews explored experiences of living with HIV and how and why they chose to engage or not with HIV services...
July 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28736394/changing-forms-of-hiv-related-stigma-along-the-hiv-care-and-treatment-continuum-in-sub-saharan-africa-a-temporal-analysis
#12
O Bonnington, J Wamoyi, W Ddaaki, D Bukenya, K Ondenge, M Skovdal, J Renju, M Moshabela, A Wringe
OBJECTIVES: Stigma remains pervasive for people living with HIV (PLHIV) in sub-Saharan Africa, undermining care engagement. Using everyday, biographical and epochal temporalities, we explored the manifestation of stigma at different stages of the HIV care continuum in seven health and demographic surveillance sites in Eastern and Southern Africa. METHODS: Between 2015 and 2016, we conducted qualitative in-depth interviews with 264 PLHIV, 54 health providers and 48 family members of people who had died from HIV...
July 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28736393/traditional-healers-faith-healers-and-medical-practitioners-the-contribution-of-medical-pluralism-to-bottlenecks-along-the-cascade-of-care-for-hiv-aids-in-eastern-and-southern-africa
#13
Mosa Moshabela, Dominic Bukenya, Gabriel Darong, Joyce Wamoyi, Estelle McLean, Morten Skovdal, William Ddaaki, Kenneth Ondeng'e, Oliver Bonnington, Janet Seeley, Victoria Hosegood, Alison Wringe
OBJECTIVES: There are concerns that medical pluralism may delay patients' progression through the HIV cascade-of-care. However, the pathways of impact through which medical pluralism influence the care of people living with HIV (PLHIV) in African settings remain unclear. We sought to establish the manifestation of medical pluralism among PLHIV, and explore mechanisms through which medical pluralism contributes bottlenecks along the HIV care cascade. METHODS: We conducted a multicountry exploratory qualitative study in seven health and demographic surveillance sites in six eastern and southern African countries: Uganda, Kenya, Tanzania, Malawi, Zimbabwe and South Africa...
July 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28736193/relapsing-fever-causative-agent-in-southern-iran-is-a-closely-related-species-to-east-african-borreliae
#14
Saied Reza Naddaf, Behnaz Ghazinezhad, Elham Kazemirad, Sally Jane Cutler
We obtained two blood samples from relapsing fever patients residing in Jask County, Hormozgan Province, southern Iran in 2013. Sequencing of a partial fragment of glpQ from two samples, and further characterization of one of them by analyzing flaB gene, and 16S-23S spacer (IGS) revealed the greatest sequence identity with East African borreliae, Borrelia recurrentis, and Borrelia duttonii, and Borrelia microti from Iran. Phylogenetic analyses of glpQ, flaB, and concatenated sequences (glpQ, flab, and IGS) clustered these sequences amongst East African Relapsing fever borreliae and B...
July 17, 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28735915/changes-in-children-s-sleep-domains-between-2-and-3%C3%A2-years-of-age-the-ulm-spatz-health-study
#15
Stefanie Braig, Michael S Urschitz, Dietrich Rothenbacher, Jon Genuneit
OBJECTIVE: There is growing interest in the link between sleep habits and child health but reference values specific to toddlers as well as longitudinal data on sleep are scarce. We aimed to describe parent-reported child sleep habits and their intra-individual changes in two- to three-year-olds using data from a regional birth cohort study. METHODS: In the Ulm SPATZ Health Study, a birth cohort study conducted at Ulm, Southern Germany, with baseline examination from April 2012 to May 2013, the German version of the Children's Sleep Habits Questionnaire (CSHQ-DE) was used longitudinally at follow-ups at two and three years (N = 615 children)...
August 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28735742/genotoxicity-of-gemfibrozil-in-the-gilthead-seabream-sparus-aurata
#16
A Barreto, L G Luis, A M V M Soares, P Paíga, L H M L M Santos, C Delerue-Matos, K Hylland, S Loureiro, M Oliveira
Widespread use of pharmaceuticals and suboptimal wastewater treatment have led to increased levels of these substances in aquatic ecosystems. Lipid-lowering drugs such as gemfibrozil, which are among the most abundant human pharmaceuticals in the environment, may have deleterious effects on aquatic organisms. We examined the genotoxicity of gemfibrozil in a fish species, the gilthead seabream (Sparus aurata), which is commercially important in southern Europe. Following 96-h waterborne exposure, molecular (erythrocyte DNA strand breaks) and cytogenetic (micronuclei and other nuclear abnormalities in cells) endpoints were measured...
September 2017: Mutation Research
https://www.readbyqxmd.com/read/28735673/pneumonia-due-to-talaromyces-marneffei-in-a-dog-from-southern-brazil-with-concomitant-canine-distemper-virus-infection
#17
S A Headley, L G Pretto-Giordano, S C Lima, W G Suhett, A H T Pereira, L A Freitas, S A Suphoronski, T E S Oliveira, A F Alfieri, E C Pereira, L A Vilas-Boas, A A Alfieri
The pathological and molecular findings associated with Talaromyces marneffei-induced pneumonia with concomitant infection by canine distemper virus (CDV) are described in a dog. The principal pathological alteration occurred in the lungs. Histopathology confirmed multifocal granulomatous pneumonia associated with numerous intralesional and intracellular septate fission cells consistent with T. marneffei. A molecular assay designed to amplify a partial fragment of the 18S rRNA gene of T. marneffei provided positive results from two fungal cultures derived from the lung...
July 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28735557/long-term-effects-of-prematurity-cumulative-medical-risk-and-proximal-and-distal-social-forces-on-individual-differences-in-diurnal-cortisol-at-young-adulthood
#18
Suzy B Winchester, Mary C Sullivan, Mary B Roberts, Crystal I Bryce, Douglas A Granger
This study examined the effects of prematurity, cumulative medical risk, and proximal and distal social forces on individual differences in the activity of the hypothalamic-pituitary-adrenal (HPA) axis in young adulthood. A prospective sample of 149 infants born healthy preterm (PT; n = 22), sick PT ( n = 93, medical illness, neurological illness, small for gestational age), and full term ( n = 34) was recruited from a Level III neonatal intensive care unit in southern New England between 1985 and 1989 and followed to age 23 years...
January 1, 2017: Biological Research for Nursing
https://www.readbyqxmd.com/read/28735239/effects-of-a-glyphosate-based-herbicide-in-pejerrey-odontesthes-humensis-embryonic-development
#19
Yuri Dornelles Zebral, Patrícia Gomes Costa, Bruna de Castro Knopp, Luize Real Lansini, Bruna Zafalon-Silva, Adalto Bianchini, Ricardo Berteaux Robaldo
Glyphosate-based herbicides (GBH) are the major pesticides used worldwide. Among them, the Roundup formulations are the most popular. Some aspects of GBH toxicity are well known, such as induction of oxidative stress. However, embryotoxicity is scarcely known. Therefore, the aim of the present study was to evaluate the effect of exposure to different Roundup Transorb R concentrations (0.36, 1.80, 3.62 and 5.43 mg glyphosate a.e./L) on Odontesthes humensis embryonic development. Embryos were sampled at three exposure times (48, 72 and 96 h)...
July 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/28735151/do-air-pollution-and-neighborhood-greenness-exposures-improve-the-predicted-cardiovascular-risk
#20
Maayan Yitshak-Sade, Itai Kloog, Victor Novack
BACKGROUND: Numerous studies show associations between exposure to Particulate Matter and Cardiovascular disease (CVD). Current cardiovascular equations incorporate the major risk factors for CVD. The patients' environment, however, is not incorporated in these equations. METHODS: In a retrospective analysis, we assessed the contribution of neighborhood greenness and particulate matter (coarse-PM and PM<2.5μm-PM2.5) to the development of CVD by analyzing the change in prediction abilities...
July 20, 2017: Environment International
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