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https://www.readbyqxmd.com/read/28214327/improved-exposure-estimation-in-soil-screening-and-clean-up-criteria-for-volatile-organic-chemicals
#1
George E DeVaull
Soil clean-up criteria define acceptable concentrations of organic chemical constituents for exposed humans. These criteria sum the estimated soil exposure over multiple pathways. Assumptions for ingestion, dermal contact, and dust exposure generally presume a chemical persists in surface soils at a constant concentration level for the entire exposure duration. For volatile chemicals this is an unrealistic assumption. A calculation method is presented for surficial soil criteria which include volatile depletion of chemical for these uptake pathways...
February 18, 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28214011/widespread-microplastic-ingestion-by-fish-assemblages-in-tropical-estuaries-subjected-to-anthropogenic-pressures
#2
A L Vendel, F Bessa, V E N Alves, A L A Amorim, J Patrício, A R T Palma
Our aim was to quantify microplastic ingestion by fish assemblages in two tropical Brazilian estuaries and to evaluate whether biological and ecological factors influence the ingestion of microplastics by fish species. Of 2233 fish from both estuaries (from 69 species) examined in this study, 9% of the individuals (24 species) had microplastics in their gut contents. Microplastic ingestion occurred irrespective of fish size and functional group. The diet of fish species was analyzed based on prey items identified in the fish's full stomach contents and five feeding guilds were defined...
February 14, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28213963/ultrastructure-of-compatible-and-incompatible-interactions-in-phloem-sieve-elements-during-the-stylet-penetration-by-cotton-aphids-in-melon
#3
Elisa Garzo, Mercedes Fernández-Pascual, Cesar Morcillo, Alberto Fereres, M Luisa Gómez-Guillamón, W Fred Tjallingii
Resistance of the melon line TGR-1551 to the aphid Aphis gossypii is based on preventing aphids from ingesting phloem sap. In electrical penetration graphs (EPGs), this resistance has been characterized with A. gossypii showing unusually long phloem salivation periods (waveform E1) mostly followed by pathway activities (waveform C) or if followed by phloem ingestion (waveform E2), ingestion was not sustained for more than 10 minutes. Stylectomy with aphids on susceptible and resistant plants was performed during EPG recording while the stylet tips were phloem inserted...
February 18, 2017: Insect Science
https://www.readbyqxmd.com/read/28213750/effect-of-an-acute-dose-of-omega-3-fish-oil-following-exercise-induced-muscle-damage
#4
J R Jakeman, D M Lambrick, B Wooley, J A Babraj, J A Faulkner
PURPOSE: The purpose of this double-blind, placebo-controlled study was to examine the effect of two fish oil supplements, one high in EPA (750 mg EPA, 50 mg DHA) and one low in EPA (150 mg EPA, 100 mg DHA), taken acutely as a recovery strategy following EIMD. METHODS: Twenty-seven physically active males (26 ± 4 year, 1.77 ± 0.07 m, 80 ± 10 kg) completed 100 plyometric drop jumps to induce muscle damage. Perceptual (perceived soreness) and functional (isokinetic muscle strength at 60° and 180° s(-1), squat jump performance and countermovement jump performance) indices of EIMD were recorded before, and 1, 24, 48, 72, and 96h after the damaging protocol...
February 17, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28213203/ghrelin-s-control-of-food-reward-and-body-weight-in-the-lateral-hypothalamic-area-is-sexually-dimorphic
#5
Lorena López-Ferreras, Jennifer E Richard, Rozita H Anderberg, Fredrik H Nilsson, Kajsa Olandersson, Scott E Kanoski, Karolina P Skibicka
Ghrelin is a stomach-produced hormone that stimulates ingestive behavior and increases motivated behavior to obtain palatable foods. Ghrelin receptors (growth hormone secretagogue receptors; Ghsr) are expressed in the lateral hypothalamic area (LHA), and LHA-targeted ghrelin application increases ingestive behavior in male rodents. However, the effects of LHA ghrelin signaling in females are unexplored. Here we investigated whether LHA ghrelin signaling is necessary and sufficient for control of ingestive and motivated behavior for food in male and female rats...
February 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28212941/injections-of-the-of-the-%C3%AE-1-adrenoceptor-antagonist-prazosin-into-the-median-raphe-nucleus-increase-food-intake-and-fos-expression-in-orexin-neurons-of-free-feeding-rats
#6
Eduardo Simão da Silva, Rafael Appel Flores, Anderson Savaris Ribas, Ana Paula Taschetto, Moacir Serralvo Faria, Leandro Bueno Lima, Martin Metzger, José Donato, Marta Aparecida Paschoalini
Previously, we showed that the blockade of α1-adrenoreceptors in the median raphe nucleus (MnR) increased food intake in free-feeding rats, indicating that adrenergic mechanisms in the MnR participate in the regulation of food intake. However, the impact of such a pharmacological manipulation on other neural circuits related to food intake remains unknown. In the current study, we sought to identify forebrain regions which are responsive to α1-adrenergic receptor blockade and presumably involved in the modulation of the feeding response...
February 14, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28212938/the-combined-effects-of-3-4-methylenedioxymethamphetamine-mdma-and-selected-substituted-methcathinones-on-measures-of-neurotoxicity
#7
Nicholas B Miner, James P O'Callaghan, Tamara J Phillips, Aaron Janowsky
The rise in popularity of substituted methcathinones (aka "bath salts") has increased the focus on their neurotoxic effects. Two commonly abused methcathinones, 3,4-methylenedioxymethcathinone (methylone, MDMC) and 3,4-methylenedioxypyrovalerone (MDPV), are often concomitantly ingested with the illicit drug 3,4-methylenedioxymethamphetamine (MDMA). To examine potential neurotoxic effects of these drug combinations, C57BL/6J mice were administered 4 i.p. injection of the drugs, at 2h intervals, either singularly: MDMA 15 or 30mg/kg, methylone 20mg/kg, MDPV 1mg/kg; or in combination: methylone/MDMA 20/15mg/kg, MDPV/MDMA 1/15mg/kg...
February 14, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28212790/the-echinococcoses-diagnosis-clinical-management-and-burden-of-disease
#8
P Kern, A Menezes da Silva, O Akhan, B Müllhaupt, K A Vizcaychipi, C Budke, D A Vuitton
The echinococcoses are chronic, parasitic diseases that are acquired after ingestion of infective taeniid tapeworm eggs from certain species of the genus Echinococcus. Cystic echinococcosis (CE) occurs worldwide, whereas, alveolar echinococcosis (AE) is restricted to the northern hemisphere, and neotropical echinococcosis (NE) has only been identified in Central and South America. Clinical manifestations and disease courses vary profoundly for the different species of Echinococcus. CE presents as small to large cysts, and has commonly been referred to as 'hydatid disease', or 'hydatidosis'...
2017: Advances in Parasitology
https://www.readbyqxmd.com/read/28212668/association-of-community-sanitation-usage-with-soil-transmitted-helminth-infections-among-school-aged-children-in-amhara-region-ethiopia
#9
William E Oswald, Aisha E P Stewart, Michael R Kramer, Tekola Endeshaw, Mulat Zerihun, Berhanu Melak, Eshetu Sata, Demelash Gessese, Tesfaye Teferi, Zerihun Tadesse, Birhan Guadie, Jonathan D King, Paul M Emerson, Elizabeth K Callahan, Matthew C Freeman, W Dana Flanders, Thomas F Clasen, Christine L Moe
BACKGROUND: Globally, in 2010, approximately 1.5 billion people were infected with at least one species of soil-transmitted helminth (STH), Ascaris lumbricoides, Trichuris trichiura, hookworm (Ancylostoma duodenale and Necator americanus). Infection occurs through ingestion or contact (hookworm) with eggs or larvae in the environment from fecal contamination. To control these infections, the World Health Organization recommends periodic mass treatment of at-risk populations with deworming drugs...
February 17, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28212649/regional-and-temporal-trends-in-blood-mercury-concentrations-and-fish-consumption-in-women-of-child-bearing-age-in-the-united-states-using-nhanes-data-from-1999-2010
#10
Leanne K Cusack, Ellen Smit, Molly L Kile, Anna K Harding
BACKGROUND: The primary route of exposure to methylmercury (MeHg), a known developmental neurotoxicant, is from ingestion of seafood. Since 2004, women of reproductive age in the U.S. have been urged to eat fish and shellfish as part of a healthy diet while selecting species that contain lower levels MeHg. Yet few studies have examined trends in MeHg exposure and fish consumption over time in this group of women with respect to their geographical location in the U.S. METHODS: Data from six consecutive cycles of the National Health and Nutrition Examination Survey (NHANES), 1999-2010 (n = 9597) were used to determine trends in blood mercury for women aged 16-49 residing in different regions in the US, and according to age, race/ethnicity, income level, and fish consumption using geographic variables...
February 17, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28212491/food-ingestion-in-an-upright-sitting-position-increases-post-prandial-amino-acid-availability-when-compared-to-food-ingestion-in-a-lying-down-position
#11
Andrew M Holwerda, Kaatje Lenaerts, Jörgen Bierau, Will K W H Wodzig, Luc J C van Loon
Dietary protein digestion and absorption kinetics determine the post-prandial increase in muscle protein synthesis. We recently demonstrated that body position during feeding can modulate the post-prandial rise in plasma amino acid availability. Here we investigated whether protein ingestion in an upright sitting body position accelerates gastric emptying and improves dietary protein digestion and subsequent amino acid absorption compared with feeding in a supine lying body position. In a crossover design, eight young males (26±1 y, 24...
February 17, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28212132/hydrocarbon-enema-an-unusual-cause-of-chemical-burn
#12
Justin Mygatt, Mustafa Amani, Patrick Ng, Brian Benson, Jeremy Pamplin, Leopoldo Cancio
Hydrocarbons are a wide-ranging group of flammable chemicals and are often used in suicide attempts either by ingestion or as accelerant in self-immolation. In this case study, we present a 37-year-old female who suffered 6% TBSA partial-thickness burns to her perineum and buttocks, which she claims resulted from diarrhea after ingesting a bottle of lighter fluid. The patient underwent decontamination and medical treatment for her burns and during her inpatient stay, it became apparent that the burns were more likely sustained from an intentional rectal administration of lighter fluid...
February 13, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28212074/a-review-of-in-body-biotelemetry-devices-implantables-ingestibles-and-injectables
#13
Asimina Kiourti, Konstantina S Nikita
: We present a review of wireless medical devices that are placed inside the human body to realize many and different sensing and/or stimulating functionalities. METHODS: A critical literature review analysis is conducted focusing on three types of in-body medical devices, i.e., a) devices that are implanted inside the human body (implantables), b) devices that are ingested like regular pills (ingestibles), and c) devices that are injected into the human body via needles (injectables)...
February 14, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28211757/mice-and-the-a-bomb-irradiation-systems-for-realistic-exposure-scenarios
#14
Guy Garty, Yanping Xu, Carl Elliston, Stephen A Marino, Gerhard Randers-Pehrson, David J Brenner
Validation of biodosimetry assays is normally performed with acute exposures to uniform external photon fields. Realistically, exposure to a radiological dispersal device or reactor leak will include exposure to low dose rates and likely exposure to ingested radionuclides. An improvised nuclear device will likely include a significant neutron component in addition to a mixture of high- and low-dose-rate photons and ingested radionuclides. We present here several novel irradiation systems developed at the Center for High Throughput Minimally Invasive Radiation Biodosimetry to provide more realistic exposures for testing of novel biodosimetric assays...
February 17, 2017: Radiation Research
https://www.readbyqxmd.com/read/28211537/ambient-ultrafine-particle-ingestion-alters-gut-microbiota-in-association-with-increased-atherogenic-lipid-metabolites
#15
Rongsong Li, Jieping Yang, Arian Saffari, Jonathan Jacobs, Kyung In Baek, Greg Hough, Muriel H Larauche, Jianguo Ma, Nelson Jen, Nabila Moussaoui, Bill Zhou, Hanul Kang, Srinivasa Reddy, Susanne M Henning, Matthew J Campen, Joseph Pisegna, Zhaoping Li, Alan M Fogelman, Constantinos Sioutas, Mohamad Navab, Tzung K Hsiai
Ambient particulate matter (PM) exposure is associated with atherosclerosis and inflammatory bowel disease. Ultrafine particles (UFP, dp < 0.1-0.2 μm) are redox active components of PM. We hypothesized that orally ingested UFP promoted atherogenic lipid metabolites in both the intestine and plasma via altered gut microbiota composition. Low density lipoprotein receptor-null (Ldlr(-/-)) mice on a high-fat diet were orally administered with vehicle control or UFP (40 μg/mouse/day) for 3 days a week...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211341/food-protein-induced-enterocolitis-syndrome
#16
REVIEW
A Nowak-Węgrzyn, E Jarocka-Cyrta, Apb Moschione Castro
Food protein-induced enterocolitis syndrome (FPIES) is a non-IgE-, cell-mediated food allergy of unknown prevalence and pathophysiology. Onset is typically during the first year of life; seafood-induced FPIES may start in adulthood. Acute FPIES manifests within 1-4 hours after ingestion with repetitive emesis, pallor, and lethargy progressing to dehydration and hypovolemic shock in 15% of cases. Chronic FPIES manifests with intermittent emesis, watery diarrhea, and poor growth progressing to dehydration and hypovolemic shock over a period of days to weeks...
2017: Journal of Investigational Allergology & Clinical Immunology
https://www.readbyqxmd.com/read/28210931/serotonin-syndrome-from-5-hydroxytryptophan-supplement-ingestion-in-a-9-month-old-labrador-retriever
#17
Hopkins Jennifer, Pardo Mariana, Bischoff Karyn
INTRODUCTION: 5-Hydroxytryptophan (5-HTP) supplements are available over the counter and labeled as sleeping aids and anxiolytics for human use. 5-HTP is a serotonin precursor and overdose can lead to serotonin syndrome. CASE REPORT: A 9-month-old female Labrador retriever was evaluated after ingestion of a 5-HTP supplement. Signs of agitation developed within 1 h of ingestion, and emesis was attempted by the owner with  3% hydrogen peroxide (H2O2) orally. On presentation, the dog was obtunded, bilaterally mydriatic and salivating...
February 16, 2017: Journal of Medical Toxicology: Official Journal of the American College of Medical Toxicology
https://www.readbyqxmd.com/read/28210835/a-10-year-review-of-cannabis-exposure-in-children-under-3-years-of-age-do-we-need-a-more-global-approach
#18
Isabelle Claudet, Mathilde Le Breton, Camille Bréhin, Nicolas Franchitto
: Pediatricians working in an emergency environment are confronted with children admitted to emergency departments for intoxication on a daily basis. We carried out a retrospective cohort study of children admitted to a pediatric emergency department due to unintentional cannabis exposure over a 10-year period from 2004 to 2014. Twenty-nine children under the age of 3 were admitted with a positive cannabis urine test. Eighty-seven percent of intoxications occurred at the family home. Resin was the main form of ingested cannabis (69%)...
February 16, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28209058/rare-sugar-syrup-containing-d-allulose-but-not-high-fructose-corn-syrup-maintains-glucose-tolerance-and-insulin-sensitivity-partly-via-hepatic-glucokinase-translocation-in-wistar-rats
#19
Tomoya Shintani, Takako Yamada, Noriko Hayashi, Tetsuo Iida, Yasuo Nagata, Nobuaki Ozaki, Yukiyasu Toyoda
Ingestion of high fructose corn syrup (HFCS) is associated with the risk of both diabetes and obesity. Rare sugar syrup (RSS) has been developed by alkaline isomerization of HFCS and has anti-obesity and anti-diabetic effects. However, the influence of RSS on glucose metabolism has not been explored. We investigated whether long-term administration of RSS maintains glucose tolerance and whether the underlying mechanism involves hepatic glucokinase translocation. Wistar rats were administered water, RSS, or HFCS in drinking water for 10 weeks, and then evaluated for glucose tolerance, insulin tolerance, liver glycogen content, and subcellular distribution of liver glucokinase...
February 16, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28208686/identification-of-autophagy-related-genes-and-their-regulatory-mirnas-associated-with-celiac-disease-in-children
#20
Sergio Comincini, Federico Manai, Cristina Meazza, Sara Pagani, Carolina Martinelli, Noemi Pasqua, Gloria Pelizzo, Marco Biggiogera, Mauro Bozzola
Celiac disease (CD) is a severe genetic autoimmune disorder, affecting about one in 100 people, where the ingestion of gluten leads to damage in the small intestine. Diagnosing CD is quite complex and requires blood tests and intestinal biopsy examinations. Controversy exists regarding making the diagnosis without biopsy, due to the large spectrum of manifesting symptoms; furthermore, small-intestinal gastroscopy examinations have a relatively complex management in the pediatric population. To identify novel molecular markers useful to increase the sensitivity and specificity in the diagnosis of pediatric CD patients, the expression levels of two key autophagy executor genes (ATG7 and BECN1) and their regulatory validated miRNAs (miR-17 and miR-30a, respectively) were analyzed by relative quantitative real-time-PCR on a cohort of confirmed CD patients compared to age-related controls...
February 12, 2017: International Journal of Molecular Sciences
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