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https://www.readbyqxmd.com/read/29793198/assessment-of-cu-sub-lethal-toxicity-lc-50-in-the-cold-water-gorgonian-dentomuricea-meteor-under-a-deep-sea-mining-activity-scenario
#1
Inês Martins, António Godinho, Joana Goulart, Marina Carreiro-Silva
Previous aquaria-based experiments have shown dissolution and leaching of metals, especially copper (Cu), from the simulated sediment plumes generated during mining activities resulting in a pronounced increase of Cu contamination in the surrounding seawater. Metals are bioavailable to corals with food, through ingestion (particulate phase) and through tissue-facilitated transport (passive diffusion). With corals being particularly vulnerable to metal contamination, resuspension of metal-bearing sediments during mining activities represents an important ecological threat...
May 21, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29792982/portuguese-children-dietary-exposure-to-multiple-mycotoxins-an-overview-of-risk-assessment-under-mycomix-project
#2
Ricardo Assunção, Carla Martins, Elsa Vasco, Alessandra Jager, Carlos Oliveira, Sara Cunha, José Fernandes, Baltazar Nunes, Susana Loureiro, Paula Alvito
Mycotoxins are secondary fungi metabolites that induce acute and chronic toxic effects in humans and animals. Simultaneous contamination of cereal-based products by multiple mycotoxins has been increasingly reported, including in food products usually consumed by children. Although some previous authors assessed the health risk of children exposed to multiple mycotoxins, scarce data are available on the risk associated with the ingestion of multiple mycotoxins through different food products. MYCOMIX, a national funded project, intended to contribute to fill this gap...
May 21, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29792981/probabilistic-non-carcinogenic-and-carcinogenic-risk-assessments-monte-carlo-simulation-method-of-the-measured-acrylamide-content-in-tah-dig-using-quechers-extraction-and-uhplc-ms-ms
#3
Parvin Eslami Shahrbabki, Bahador Hajimohammadi, Shahram Shoeibi, Mehdi Elmi, Arash Yousefzadeh, Gea Oliveri Conti, Margherita Ferrante, Maryam Amirahmadi, Yadolah Fakhri, Amin Mousavi Khaneghah
A modified "Quick, Easy, Cheap, Effective, Rugged, and Safe" QuEChERS in combination with Ultra-High Performance Liquid Chromatography/tandem mass spectrometry (UHPLC-MS/MS) method was optimized for the determination of acrylamide content in different types of tah-dig (rice, bread, and potato). Also, the non-carcinogenic and carcinogenic risks (target hazard quotient (THQ) and incremental lifetime cancer risk (ILCR)) due to ingestion of acrylamide via tah-dig in the adults and children were assessed by Monte Carlo simulation (MCS) method...
May 21, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29792902/session-4-discussion-the-built-environment
#4
Blake Jones, Jayne Fulkerson, Michael Widner, Steve Douglas
The following is a transcript from "The Built Environment" session during the Ingestive Behavior Research Conference at Purdue University.
May 21, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29792697/association-of-type-2-diabetes-with-submicron-titanium-dioxide-crystals-in-the-pancreas
#5
Adam Heller, Karalee Jarvis, Sheryl S Coffman
Pigment-grade titanium dioxide (TiO2) of 200-300 nm particle diameter is one of the most widely used submicron-sized particle materials. Inhaled and ingested TiO2 particles are known to enter the bloodstream, to be phagocytized by macrophages and neutrophils, to be inflammatory, and to activate the NLRP3 inflammasome. In this pilot study of 11 pancreatic specimens, 8 of the type 2 diabetic pancreas and 3 of the non-diabetic pancreas, we show that 110±70 nm average diameter TiO2 crystals abound in the type 2 diabetic pancreas, but not in the non-diabetic pancreas...
May 24, 2018: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/29792554/effect-of-acetazolamide-and-methazolamide-on-diaphragm-and-dorsiflexor-fatigue-a-randomized-controlled-trial
#6
Paolo B Dominelli, Chris J McNeil, Tyler Dennis Vermeulen, Troy J R Stuckless, Courtney V Brown, Giulio S Dominelli, Erik Richard Swenson, Lucas J Teppema, Glen Edward Foster
Acetazolamide, a carbonic anhydrase (CA) inhibitor used clinically and to prevent acute mountain sickness, worsens skeletal muscle fatigue in animals and humans. In animals, methazolamide, a methylated analogue of acetazolamide and an equally potent CA inhibitor, reportedly exacerbates fatigue less than acetazolamide. Accordingly, we sought to determine, in humans, if methazolamide would attenuate diaphragm and dorsiflexor fatigue compared to acetazolamide. Healthy men (dorsiflexor: n=12; diaphragm: n=7) performed fatiguing exercise on three occasions, after ingesting acetazolamide (250 mg three times a day) and then in random order, methazolamide (100 mg twice a day) or placebo for 48 h...
May 24, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29792425/roasted-barley-extract-mugi-cha-containing-cyclo-d-phe-l-pro-prevents-lowering-of-cutaneous-blood-flow-and-skin-temperature-under-air-conditioning-a-randomized-double-blind-placebo-controlled-crossover-study
#7
Hiroshi Ashigai, Mai Mizutani, Yoshimasa Taniguchi, Yasuko Matsukura, Keiko Nakashima, Emiko Ikeshima, Hiroaki Yajima
Roasted barley extract (RBE), also known as mugi-cha, is a well-known healthy non-caffeinated beverage and its health functionality has been widely reported. Our previous clinical study showed that RBE affects cutaneous blood flow and skin temperature after cold water immersion, and that cyclo (D-Phe-L-Pro) is responsible for its effect. In this study, we investigated whether cyclo (D-Phe-L-Pro)-containing RBE prevents the decrease in cutaneous blood flow and skin temperature in an excessively air-conditioned room...
May 24, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29791909/iodine-induced-fetal-hypothyroidism-diagnosis-and-treatment-with-intra-amniotic-levothyroxine
#8
Macy T Hardley, Andrew H Chon, Jorge Mestman, Caroline T Nguyen, Mitchell E Geffner, Ramen H Chmait
BACKGROUND: Iodine is necessary for fetal thyroid development. Excess maternal intake of iodine can cause fetal hypothyroidism due to the inability to escape from the Wolff-Chaikoff effect in utero. CASE REPORT: We report a case of fetal hypothyroid goiter secondary to inadvertent excess maternal iodine ingestion from infertility supplements. The fetus was successfully treated with intra-amniotic levothyroxine injections. Serial fetal blood sampling confirmed fetal escape from the Wolff-Chaikoff effect in the mid third trimester...
May 23, 2018: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/29791895/effect-of-postprandial-administration-of-esomeprazole-on-reflux-symptoms-in-gastroesophageal-reflux-disease-a-randomized-controlled-trial
#9
Doron Boltin, Ibrahim Zvidi, Maria Raskin, Hen Kayless, Hemda Schmilovitz-Weiss, Rachel Gingold-Belfer, Yaron Niv, Ram Dickman
BACKGROUND: Esomeprazole is commonly administered with food; however, clinical data to support this practice are lacking. We aimed to determine the effect of postprandial ingestion of esomeprazole on reflux symptoms among patients with gastroesophageal reflux disease (GERD). METHODS: Consecutive patients with GERD adequately controlled with esomeprazole 40 mg daily, entered a 2-week lead-in period during which esomeprazole was administered 30 min before breakfast...
May 23, 2018: Digestive Diseases
https://www.readbyqxmd.com/read/29791448/abundance-and-distribution-of-microplastics-within-surface-sediments-of-a-key-shellfish-growing-region-of-canada
#10
T N Kazmiruk, V D Kazmiruk, L I Bendell
The abundance and distribution of microplastics within 5 sediment size classes (>5000 μm, 1000-5000 μm, 250-1000 μm, 250-0.63 μm and < 0.63 μm) were determined for 16 sites within Lambert Channel and Baynes Sound, British Columbia, Canada. This region is Canada's premier growing area for the Pacific oyster (Crassostrea gigas). Microplastics were found at all sampling locations indicating widespread contamination of this region with these particles. Three types of microplastics were recovered: microbeads, which occurred in the greatest number (up to 25000/kg dry sediment) and microfibers and microfragments, which were much less in number compared with microbeads and occurred in similar amounts (100-300/kg dry sediment)...
2018: PloS One
https://www.readbyqxmd.com/read/29791295/ultrasonographic-detection-of-ingested-fishing-lines-in-loggerheads-caretta-caretta
#11
Delia Franchini, Carmela Valastro, Stefano Ciccarelli, Francesco Caprio, Diana Lenoci, Antonio Di Bello
Loggerhead sea turtles ( Caretta caretta) are among the most frequent victims of bycatch in drifting longlines, and the ingestion of fish hooks and fishing lines is one of the most frequent causes of death of sea turtles. The aim of this study was to evaluate whether coelomic ultrasound (US) can be decisive, not only for diagnosis but also to optimize surgical planning based on preoperative evaluation of the bowel conditions and, in addition, to see if there are characteristic sonographic findings in sea turtles associated with the ingestion of fishing lines...
May 23, 2018: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/29790281/suppressing-tawny-crazy-ant-nylanderia-fulva-by-rnai-technology
#12
Jia Meng, Jiaxin Lei, Andrew Davitt, Jocelyn R Holt, Jian Huang, Roger Gold, Edward L Vargo, Aaron M Tarone, Keyan Zhu-Salzman
The tawny crazy ant (Nylanderia fulva) is a new invasive pest in the United States. At present, its management mainly relies on the use of synthetic insecticides, which are generally ineffective at producing lasting control of the pest, necessitating alternative environmentally friendly measures. In this study, we evaluated the feasibility of gene silencing to control this ant species. Six housekeeping genes encoding actin (NfActin), coatomer subunit β (NfCOPβ), arginine kinase (NfArgK), and V-type proton ATPase subunits A (NfvATPaseA), B (NfvATPaseB) and E (NfvATPaseE) were cloned...
May 22, 2018: Insect Science
https://www.readbyqxmd.com/read/29789507/acute-caffeinated-coffee-consumption-does-not-improve-time-trial-performance-in-an-800-m-run-a-randomized-double-blind-crossover-placebo-controlled-study
#13
Alexandre C Marques, Alison A Jesus, Bruna M Giglio, Ana C Marini, Patrícia C B Lobo, João F Mota, Gustavo D Pimentel
INTRODUCTION: Studies evaluating caffeinated coffee (CAF) can reveal ergogenic effects; however, studies on the effects of caffeinated coffee on running are scarce and controversial. AIM: To investigate the effects of CAF consumption compared to decaffeinated coffee (DEC) consumption on time trial performances in an 800-m run in overnight-fasting runners. METHODS: A randomly counterbalanced, double-blind, crossover, placebo-controlled study was conducted with 12 healthy adult males with experience in amateur endurance running...
May 23, 2018: Nutrients
https://www.readbyqxmd.com/read/29789270/surplus-fat-rapidly-increases-fat-oxidation-and-insulin-resistance-in-lipodystrophic-mice
#14
Amandine Girousse, Samuel Virtue, Dan Hart, Antonio Vidal-Puig, Peter R Murgatroyd, Etienne Mouisel, Coralie Sengenès, David B Savage
OBJECTIVE: Surplus dietary fat cannot be converted into other macronutrient forms or excreted, so has to be stored or oxidized. Healthy mammals store excess energy in the form of triacylgycerol (TAG) in lipid droplets within adipocytes rather than oxidizing it, and thus ultimately gain weight. The 'overflow hypothesis' posits that the capacity to increase the size and number of adipocytes is finite and that when this limit is exceeded, fat accumulates in ectopic sites and leads to metabolic disease...
May 16, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29788901/recurrent-esophageal-stricture-from-previous-caustic-ingestion-treated-with-40-year-self-dilation-case-report-and-review-of-literature
#15
C Gambardella, A Allaria, G Siciliano, C Mauriello, R Patrone, N Avenia, A Polistena, A Sanguinetti, S Napolitano, G Conzo
BACKGROUND: Corrosive esophageal strictures are common. The severity of the strictures depends on type, quantity, duration of contact and concentration of the caustic substance ingested. Endoscopic balloon dilation and endoscopic bougienage are a cornerstone in the management of the benign esophageal strictures and are the most widely used treatments, but are expensive and invasive procedures. CASE PRESENTATION: We report the case of an 82-year-old patient with a corrosive esophageal stricture treated for over 40 years by means of home self-bougienage...
May 22, 2018: BMC Gastroenterology
https://www.readbyqxmd.com/read/29788433/metabolic-footprinting-of-fermented-milk-consumption-in-serum-of-healthy-men
#16
Grégory Pimentel, Kathryn J Burton, Ueli von Ah, Ueli Bütikofer, François P Pralong, Nathalie Vionnet, Reto Portmann, Guy Vergères
Background: Fermentation is a widely used method of natural food preservation that has consequences on the nutritional value of the transformed food. Fermented dairy products are increasingly investigated in view of their ability to exert health benefits beyond their nutritional qualities. Objective: To explore the mechanisms underpinning the health benefits of fermented dairy intake, the present study followed the effects of milk fermentation, from changes in the product metabolome to consequences on the human serum metabolome after its ingestion...
May 21, 2018: Journal of Nutrition
https://www.readbyqxmd.com/read/29788417/poor-feed-efficiency-in-sheep-is-associated-with-several-structural-abnormalities-in-the-community-metabolic-network-of-their-ruminal-microbes
#17
Rocky D Patil, Melinda J Ellison, Sara M Wolff, Courtney Shearer, Anna M Wright, Rebecca R Cockrum, Kathy J Austin, William R Lamberson, Kristi M Cammack, Gavin C Conant
Ruminant animals have a symbiotic relationship with the microorganisms in their rumens. In this relationship, rumen microbes efficiently degrade complex plant-derived compounds into smaller digestible compounds, a process that is very likely associated with host animal feed efficiency. The resulting simpler metabolites can then be absorbed by the host and converted into other compounds by host enzymes. We used a microbial community metabolic network inferred from shotgun metagenomics data to assess how this metabolic system differs between animals that are able to turn ingested feedstuffs into body mass with high efficiency and those that are not...
May 18, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29788005/morphological-identification-of-hair-recovered-from-feces-for-detection-of-cannibalism-in-eastern-chimpanzees
#18
Christopher S Walker, Kara K Walker, Gabo Paulo, Anne E Pusey
Chimpanzees (Pan troglodytes) are primarily frugivorous but consume a variable amount of meat from a variety of organisms, including other chimpanzees. Cannibalism is rare, usually follows lethal aggression, and does not occur following natural deaths. While chimpanzee cannibalism has been documented at multiple sites, many instances of this behavior go unrecorded. Identification of chimpanzee remains in feces, however, can provide indirect evidence of cannibalism. Hair, in particular, typically passes through the gastrointestinal tract undamaged and is commonly used for purposes of identification in wildlife forensics...
May 22, 2018: Folia Primatologica; International Journal of Primatology
https://www.readbyqxmd.com/read/29787899/dermal-contact-with-furniture-fabrics-is-a-significant-pathway-of-human-exposure-to-brominated-flame-retardants
#19
Mohamed Abou-Elwafa Abdallah, Stuart Harrad
Despite extensive application in consumer products and concerns over their adverse health effects, how external exposure to brominated flame retardants (BFRs) contributes to their human body burdens is not yet fully understood. While recent studies focused on inadvertent indoor dust ingestion and diet as potential major pathways of exposure, dermal uptake has been largely overlooked. We provide the first experimentally-based assessment of dermal uptake of BFRs via contact with indoor dust and flame-retarded furniture fabrics...
May 19, 2018: Environment International
https://www.readbyqxmd.com/read/29787703/misshapen-connects-food-mechanosensing-and-intestinal-growth
#20
Jin Jiang
Adult tissues such as intestinal epithelium can rapidly adapt their growth in response to environmental stimuli. In this issue of Developmental Cell, Li et al. (2018) demonstrate that gut epithelium stretching caused by food ingestion drives Drosophila intestinal growth via Hippo pathway regulation.
May 21, 2018: Developmental Cell
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