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https://www.readbyqxmd.com/read/28335439/mercury-levels-in-human-hair-and-farmed-fish-near-artisanal-and-small-scale-gold-mining-communities-in-the-madre-de-dios-river-basin-peru
#1
Aubrey L Langeland, Rebecca D Hardin, Richard L Neitzel
Artisanal and small-scale gold mining (ASGM) has been an important source of income for communities in the Madre de Dios River Basin in Peru for hundreds of years. However, in recent decades, the scale of ASGM activities in the region has increased dramatically, and exposures to a variety of occupational and environmental hazards related to ASGM, including mercury, are becoming more widespread. The aims of our study were to: (1) examine patterns in the total hair mercury level of human participants in several communities in the region and compare these results to the 2...
March 14, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28334272/17%C3%AE-estradiol-induced-acsl4-protein-expression-promotes-an-invasive-phenotype-in-estrogen-receptor-positive-mammary-carcinoma-cells
#2
Anissa Belkaid, Rodney J Ouellette, Marc E Surette
Long chain acyl-CoA synthase-4 (ACSL4) expression has been associated with an aggressive phenotype in breast carcinoma cells, whereas its role in ERα-positive breast cancer has not been studied. ACSL4 prefers 20-carbon polyunsaturated fatty acid (PUFA) substrates, and along with other ACSLs has been associated with cellular uptake of exogenous fatty acids. 17β-estradiol induces proliferation and invasive capacities in ERα+ve breast carcinoma that is associated with modifications of cellular lipid metabolism...
March 10, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28333826/complex-relation-between-diet-and-phospholipid-fatty-acids-in-children-with-cystic-fibrosis
#3
Sara Moukarzel, Roger A Dyer, Sheila M Innis
OBJECTIVES: Altered total plasma n-6 and n-3 fatty acids are common in cystic fibrosis (CF). Whether alterations extend to plasma phosphatidylcholine (PC) and phosphatidylethanolamine (PE) and are explained by diet is unclear. The present study was to describe the dietary intake of a large group of children with CF and to determine whether dietary fat composition explains differences in plasma PC and PE fatty acids between children with and without CF. METHODS: Dietary intake was assessed using a food frequency questionnaire...
April 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28332043/high-arachidonic-acid-levels-in-the-tissues-of-herbivorous-fish-species-siganus-fuscescens-calotomus-japonicus-and-kyphosus-bigibbus
#4
Asada Jiarpinijnun, Soottawat Benjakul, Akasith Pornphatdetaudom, Junichiro Shibata, Emiko Okazaki, Kazufumi Osako
The lipid and fatty acid compositions in the various organs (muscle, liver, other viscera) and stomach contents of three common herbivorous fish species in Japan, Siganus fuscescens, Calotomus japonicus and Kyphosus bigibbus, were examined to explore the stable 20:4n-6 (arachidonic acid, ARA) sources. Triacylglycerol (TAG), phosphatidylethanolamine (PtdEtn), and phosphatidylcholine (PtdCho) were the dominant lipid classes, while the major FA contents were 16:0, 18:1n-9, 16:1n-7, 14:0, 18:0, 18:1n-7, and some PUFA, including ARA, 20:5n-3 (eicosapentaenoic acid, EPA), 22:5n-3 (docosapentaenoic acid, DPA), and 22:6n-3 (docosahexaenoic acid, DHA)...
March 22, 2017: Lipids
https://www.readbyqxmd.com/read/28331158/low-serum-levels-of-epa-are-associated-with-the-size-and-growth-rate-of-abdominal-aortic-aneurysm
#5
Tatsuro Aikawa, Tetsuro Miyazaki, Kazunori Shimada, Yurina Sugita, Megumi Shimizu, Shohei Ouchi, Tomoyasu Kadoguchi, Yasutaka Yokoyama, Tomoyuki Shiozawa, Masaru Hiki, Shuhei Takahashi, Hamad Al Shahi, Shizuyuki Dohi, Atsushi Amano, Hiroyuki Daida
AIM: Omega-3 polyunsaturated fatty acids (PUFAs) such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) have been reported to reduce the risk of cardiovascular disease. However, whether omega-3 PUFAs are involved in the pathogenesis of abdominal aortic aneurysms (AAA) remains unclear. METHODS: We analyzed 67 consecutive patients admitted for the elective surgical repair of AAA. We investigated the association of serum EPA and DHA levels as well as the EPA/AA ratio with the size of AAA assessed using three-dimensional reconstructed computed tomography images...
March 22, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28330907/plasma-%C3%AF-3-fatty-acids-in-pregnancy-are-inversely-associated-with-postpartum-weight-retention-in-a-multiethnic-asian-cohort
#6
See Ling Loy, Michelle Jia Hui Ng, Yin Bun Cheung, Keith M Godfrey, Philip C Calder, Ngee Lek, Fabian Yap, Falk Müller-Riemenschneider, Padmapriya Natarajan, Yap-Seng Chong, Kok Hian Tan, Lynette Pei-Chi Shek, Mary Foong-Fong Chong, Jerry Kok Yen Chan
Background: Studies have demonstrated associations between polyunsaturated fatty acids (PUFAs) and adiposity. It is unclear whether PUFAs in pregnancy have an effect on maternal weight retention after childbirth, which can contribute to long-term obesity.Objective: We examined the association of maternal plasma PUFAs in pregnancy with 18-mo postpartum weight retention (PPWR) in a multiethnic Asian cohort.Design: We studied pregnant women (n = 653) recruited between June 2009 and September 2010 from a prospective cohort...
March 22, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28330525/determination-of-polycyclic-aromatic-hydrocarbons-in-commercial-parenteral-formulations-and-medications-using-high-performance-liquid-chromatography-with-diode-array-detection
#7
Marcia M Barichello, Denise Bohrer, Carine Viana, Leandro M Carvalho, Paulo C Nascimento
HPLC coupled to UV diode array detection (DAD) is proposed for the determination of polycyclic aromatic hydrocarbons (PAHs) in pharmaceutical products for parenteral administration. Because rubber is a possible source of PAHs for these products, samples stored in containers with rubber parts were selected for the analysis. The basis for method optimization was EPA Method 8310, which determines 16 priority PAHs in ground water and wastewater by HPLC using both UV and fluorescence detection. Using DAD, two channels were selected for detection, with one operating at 254 nm for the detection of nine PAHs and the other at 225 nm for the detection of seven PAHs...
February 22, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28330470/involvement-of-apoptotic-pathways-in-docosahexaenoic-acid-induced-benefit-in-prostate-cancer-pathway-focused-gene-expression-analysis-using-rt-2-profile-pcr-array-system
#8
Yanan Sun, Xiaopeng Jia, Lianguo Hou, Xing Liu, Qiang Gao
BACKGROUND: Present study aimed to better understand the potential apoptotic pathways that involved in docosahexaenoic acid (DHA)-induced apoptosis of prostate cancer cells. METHODS: Human prostate cancer DU145 cells were treated with different concentrations of fish oil, omega-3 PUFA (DHA, and Eicosapentaenoic acid, EPA), or omega-6 PUFA (Arachidonic acid, AA). Cell viability and apoptosis were evaluated by MTT assay and Hoechst staining. Pathway-focused gene expression profiling of DU145 cells was analyzed with the RT(2) Profile PCR Array System...
March 23, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28328736/entrustment-decisions-bringing-the-patient-into-the-assessment-equation
#9
Olle Ten Cate
With the increased interest in the use of entrustable professional activities (EPAs) in undergraduate medical education (UME) and graduate medical education (GME) come questions about the implications for assessment. Entrustment assessment combines the evaluation of learners' knowledge, skills, and behaviors with the evaluation of their readiness to be entrusted to perform critical patient care responsibilities. Patient safety, then, should be an explicit component of educational assessments. The validity of these assessments in the clinical workplace becomes the validity of the entrustment decisions...
March 21, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28324837/status-of-pesticides-pollution-in-tanzania-a-review
#10
REVIEW
Raheli Elibariki, Mihayo Musabila Maguta
Various studies have been conducted in Tanzania to assess the magnitude of pesticides pollution associated with pesticides application, storage, disposal as well as knowledge of farmers on pesticides handling. The studies analysed samples from different matrices covering vegetation, biota, water, sediments and soil. The objective of this review was to summarise the results of pesticides residues reported in different components of the environment to give a clear picture of pesticides pollution status in the country for law enforcement as well as for taking precaution measures...
March 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28324790/a-new-approach-to-estimating-the-evoked-hemodynamic-response-applied-to-dual-channel-functional-near-infrared-spectroscopy
#11
Reza Arefi Shirvan, Seyed Kamaledin Setarehdan, Ali Motie Nasrabadi
BACKGROUND: Brain activity can be measured non-invasively by means of functional near-infrared spectroscopy (fNIRS) which records hemodynamics of the brain tissue. Sensitivity of fNIRS to the brain activity is however being affected by natural physiological brain hemodynamics (systemic interferences). Functional hemodynamic signal extraction from physiological interferences still remains a challenging task. NEW METHOD: This paper presents a novel effective algorithm for real-time physiological interference reduction and recovery of the evoked brain activity using a dual channel fNIRS system...
March 18, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28324248/incorporation-of-flaxseed-flour-as-a-dietary-source-for-ala-increases-bone-density-and-strength-in-post-partum-female-rats
#12
Danielle Cavalcante Ribeiro, Aline D'Avila Pereira, Fernanda Carvalho de Santana, Jorge Mancini-Filho, Eduardo Moreira da Silva, Carlos Alberto Soares da Costa, Gilson Teles Boaventura
In women, bone mass undergoes changes during pregnancy and the postpartum period, which has a risk for subsequent development of osteoporosis. Thus, the present study aims to evaluate the effects of flaxseed flour in femur quality during post-weaning of dam rats. After weaning, the rats were divided into control (C, n = 7) and experimental (F, n = 7) groups treated with a diet containing 25 g of flaxseed flour in the lactating period and 15 g in the maintenance period. After 51 days post-partum, serum hormone, fatty acids composition, bone compartments, computed tomography, and biomechanical analyses were determined...
March 21, 2017: Lipids
https://www.readbyqxmd.com/read/28319747/integration-of-in-silico-methods-and-computational-systems-biology-to-explore-endocrine-disrupting-chemical-binding-with-nuclear-hormone-receptors
#13
P Ruiz, A Sack, M Wampole, S Bobst, M Vracko
Thousands of potential endocrine-disrupting chemicals present difficult regulatory challenges. Endocrine-disrupting chemicals can interfere with several nuclear hormone receptors associated with a variety of adverse health effects. The U.S. Environmental Protection Agency (U.S. EPA) has released its reviews of Tier 1 screening assay results for a set of pesticides in the Endocrine Disruptor Screening Program (EDSP), and recently, the Collaborative Estrogen Receptor Activity Prediction Project (CERAPP) data...
March 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28318559/screening-level-risk-assessment-applied-to-dredging-of-polluted-sediments-from-guanabara-bay-rio-de-janeiro-brazil
#14
Ana Elisa F Silveira, Juliana R Nascimento, Elisamara Sabadini-Santos, Edison D Bidone
Guanabara Bay is characterized by predominant eutrophication and anoxic sediments with a mixture of pollutants. The risk prognosis associated with the dumping of its dredged sediments into the open ocean was addressed by our algorithm. Our algorithm could prioritize areas, characterize major processes related to dredging, measure the potential risk of sediments, and predict the effects of sediment mixing. The estimated risk of dredged sediment was >10-fold than that of ocean sediments. Among metals, mercury represented 50-90% of the total risk...
March 16, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28316988/bioengineered-plants-can-be-a-useful-source-of-omega-3-fatty-acids
#15
REVIEW
Waleed Amjad Khan, Hu Chun-Mei, Nadeem Khan, Amjad Iqbal, Shan-Wu Lyu, Farooq Shah
Omega-3 fatty acids have proven to be very essential for human health due to their multiple health benefits. These essential fatty acids (EFAs) need to be uptaken through diet because they are unable to be produced by the human body. These are important for skin and hair growth as well as for proper visual, neural, and reproductive functions of the body. These fatty acids are proven to be extremely vital for normal tissue development during pregnancy and infancy. Omega-3 fatty acids can be obtained mainly from two dietary sources: marine and plant oils...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28315194/assessing-entrustable-professional-activities-during-the-psychiatry-clerkship
#16
Martin Klapheke, Teresa Johnson, Morayma Cubero
OBJECTIVE: Within 10 years, the Association of American Medical Colleges envisions graduating medical students will be entrusted by their school to perform 13 core entrustable professional activities (EPAs) without direct supervision. The authors focused on eight EPAs that appear most relevant to clinical training during the psychiatry clerkship at their institution to evaluate whether students assess themselves as making progress in EPAs during this clerkship, to see how students' self-assessments compare with the clerkship director's assessments, and to see if weaknesses in the curriculum were found...
March 17, 2017: Academic Psychiatry
https://www.readbyqxmd.com/read/28314233/suburban-air-quality-human-health-hazard-assessment-of-potentially-toxic-elements-in-pm10
#17
Laura Megido, Beatriz Suárez-Peña, Luis Negral, Leonor Castrillón, Yolanda Fernández-Nava
PM10 samples were collected at two suburban locations in northern Spain, a traffic-industrial suburban (TIS) station located in the coastal city of Gijón and an industrial suburban (IS) station in Langreo, about 25 km inland. The aerosol samples were chemically analysed to determine ambient air concentrations of As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Se, V and Zn. The results showed that the mean levels of As, Co, Cu, Fe, Mn, Ni, Pb and Se recorded at the IS location were higher than those at the TIS station...
March 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28303454/concentrations-and-analysis-of-health-risks-of-ambient-air-metallic-elements-at-longjing-site-in-central-taiwan
#18
Guor-Cheng Fang, Yu-Cheng Chen, Chaur-Tsuen Lo, Meng-Hsien Cho, Yuan-Jie Zhuang, Kai-Hsiang Tsai, Chao-Yang Huang, You-Fu Xiao
The concentrations of particulates and metallic elements that were bound to total suspended particulates in ambient air at Long Cyuan Elementary School (LCYES), Lung Ching Elementary School (LCHES) and Long Shan Primary School (LSPS) sampling sites in the Longjing area were measured. Significant difference tests were conducted at LSPS, LCYES and LCHES sites. Finally, carcinogenic and non-carcinogenic risk values for LSPS, LCYES and LCHES sites in the Longjing district were evaluated. The results show that the most average particulate and metallic element concentrations were highest in October, November, January, February, March, April, August, and September The average particulate and metallic element concentrations at LCHES were higher than at the other sampling sites...
March 16, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28302406/docosahexaenoic-acid-in-the-treatment-of-rheumatoid-arthritis-a%C3%A2-double-blind-placebo-controlled-randomized-cross-over-study-with-microalgae-vs-sunflower-oil
#19
C Dawczynski, M Dittrich, T Neumann, K Goetze, A Welzel, P Oelzner, S Völker, A M Schaible, F Troisi, L Thomas, S Pace, A Koeberle, O Werz, P Schlattmann, S Lorkowski, G Jahreis
The potential of fish or fish oil as supplier for eicosapentaenoic acid (EPA, C20:5n3) and docosahexaenoic acid (DHA, C22:6n3) for reducing cardiovascular risk factors and supporting therapy of chronic inflammatory diseases, has been investigated intensively, but our knowledge about the physiological effects of the individual compounds EPA and DHA are limited. STUDY DESIGN: In this double-blind pilot study, thirty-eight patients with defined RA were allocated to consume foods enriched with microalgae oil from Schizochytrium sp...
March 6, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28300260/concentrations-and-sources-apportionment-of-polycyclic-aromatic-hydrocarbons-in-sediments-from-the-uganda-side-of-lake-victoria
#20
Nasifu Kerebba, Patrick Ssebugere, Justus Kwetegyeka, Kenneth Arinaitwe, John Wasswa
This study presents the levels and possible sources of selected polycyclic aromatic hydrocarbons (PAHs) in surface sediments from the Napoleon Gulf and Murchison Bay of Lake Victoria. Sediment samples were extracted and cleaned up for PAHs using UNEP, 1992, and EPA method 3630C protocols. The analysis of sample extracts was carried out using a gas chromatograph coupled to a mass spectrometer. Fifteen congeners, mostly the high molecular weight PAHs (HPAHs) (4-6 rings) were detected. Total (∑) concentrations varied from 44...
March 16, 2017: Environmental Science. Processes & Impacts
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