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Food and Chemical Toxicology

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https://www.readbyqxmd.com/read/27908701/inhibitory-effects-of-l-theanine-on-airway-inflammation-in-ovalbumin-induced-allergic-asthma
#1
Yong Pil Hwang, Sun Woo Jin, Jae Ho Choi, Chul Yung Choi, Hyung Gyun Kim, Se Jong Kim, Yongan Kim, Kyung Jin Lee, Young Chul Chung, Hye Gwang Jeong
L-theanine, a water-soluble amino acid isolated from green tea (Camellia sinensis), has anti-inflammatory activity, antioxidative properties, and hepatoprotective effects. However, the anti-allergic effect of L-theanine and its underlying molecular mechanisms have not been elucidated. In this study, we investigated the protective effects of L-theanine on asthmatic responses, particularly airway inflammation and oxidative stress modulation in an ovalbumin (OVA)-induced murine model of asthma. Treatment with L-theanine dramatically attenuated the extensive trafficking of inflammatory cells into bronchoalveolar lavage fluid (BALF)...
November 28, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27908700/sex-dependent-effects-of-developmental-exposure-to-different-pesticides-on-spatial-learning-the-role-of-induced-neuroinflammation-in-the-hippocampus
#2
Belén Gómez-Giménez, Marta Llansola, Vicente Hernández-Rabaza, Andrea Cabrera-Pastor, Michele Malaguarnera, Ana Agusti, Vicente Felipo
The use of pesticides has been associated with impaired neurodevelopment in children. The aims of this work were to assess: 1) the effects on spatial learning of developmental exposure to pesticides 2) if the effects are sex-dependent and 3) if hippocampal neuroinflammation is associated with the impairment of spatial learning. We analyzed the effects of developmental exposure to four pesticides: chlorpyrifos, carbaryl, endosulfan and cypermethrin. Exposure was from gestational day 7 to post-natal day 21 and spatial learning and memory was assessed when the rats were young adults...
November 28, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27908699/fast-methodology-for-the-determination-of-a-broad-set-of-antibiotics-and-some-of-their-metabolites-in-seafood
#3
Albert Serra-Compte, Diana Álvarez-Muñoz, Sara Rodríguez-Mozaz, Damià Barceló
The presence of antibiotics in seafood for human consumption may pose a risk for consumers. A methodology for the analysis of antibiotics in seafood based on QuEChERS (quick, easy, cheap, effective, rugged, and safe) extraction, followed by detection and quantification using liquid chromatography coupled to mass spectrometry was developed. The analytical method was evaluated for the determination of 23 antibiotics (including parent compounds and some metabolites) in fish, mussels and clams. Recoveries ranged between 30% and 70% for most of the compounds and method detection and quantification limits (MDLs and MQLs) were between 0...
November 28, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27899302/rifm-fragrance-ingredient-safety-assessment-elemol-cas-registry-number-639-99-6
#4
A M Api, D Belsito, S Bhatia, D Botelho, D Browne, M Bruze, G A Burton, J Buschmann, P Calow, M L Dagli, M Date, W Dekant, C Deodhar, A D Fryer, K Joshi, L Kromidas, S La Cava, J F Lalko, A Lapczynski, D C Liebler, D O'brien, R Parakhia, A Patel, T M Penning, V T Politano, G Ritacco, J Romine, D Salvito, T W Schultz, J Shen, I G Sipes, Y Thakkar, S Tsang, J Wahler, B Wall, D K Wilcox
No abstract text is available yet for this article.
November 26, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27899301/role-for-nf-%C3%AE%C2%BAb-inflammatory-signaling-pathway-in-tenofovir-disoproxil-fumarate-tdf-induced-renal-damage-in-rats
#5
Hemalatha Ramamoorthy, Premila Abraham, Bina Isaac, Dhayakani Selvakumar
Nephrotoxicity due to tenofovir treatment of HIV patients has been reported. However, the mechanism of tenofovir nephrotoxicity is not clear. NFκB is an important proinflammatory transcription factor that plays a pivotal role in oxidative stress-induced inflammation. We hypothesised that NFκB proinflammatory signalling pathway may play a role in tenofovir induced renal damage. Renal damage was induced in adult male Wistar rats by the oral administration of 600 mg/kg body wt. daily for 5 consecutive weeks...
November 26, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27890565/three-generation-reproduction-toxicity-study-of-genetically-modified-rice-with-insect-resistant-genes
#6
Yichun Hu, Qin Zhuo, Zhaolong Gong, Jianhua Piao, Xiaoguang Yang
In the present work, we evaluated the three generation reproductive toxicity of the genetically modified rice with insectresistant cry1Ac and sck genes. 120 Sprague-Dawley (SD) rats were divided into three groups which were fed with genetically modified rice diet (GM group), parental control rice diet (PR group) and AIN-93 control diet (both used as negative control) respectively. Bodyweight, food consumption, reproductive data, hematological parameters, serum chemistry, relative organ weights and histopathology for each generation were examined respectively...
November 24, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27890564/phytochemical-and-phytopharmacological-review-of-perilla-frutescens-l-labiatae-a-traditional-edible-medicinal-herb-in-china
#7
Hua Yu, Jian Feng Qiu, Li Juan Ma, Yuan Jia Hu, Peng Li, Jian Bo Wan
Perilla frutescens (L.) Britt., a worldwide distributed plant, is an important economic crop and with a long cultivation history in China as well as some other countries in Asia. Except for the edible applications, the plant of P. frutescens is also traditionally used as a medicinal herb in China for thousands years. The leaves, seeds and stems of P. frutescens are recommended by the Chinese Pharmacopeia as three medicinal materials for various therapeutic applications. In the past decades, amount investigations have been done about different aspects for P...
November 24, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27890563/exposure-factors-for-cleaning-automotive-care-and-surface-protection-products-for-exposure-assessments
#8
Ji Young Park, Miyoung Lim, Wonho Yang, Kiyoung Lee
Accurately measuring the usage patterns of consumer products (CPs) is important to conduct realistic exposure assessments. We determined the exposure factors for 18 consumer products: household bleach, mold stain remover, all-purpose cleaner, washing machine cleaner, air conditioner cleaner, glass cleaner, drain cleaner, adhesive remover, liquid snow chain, tire shine spray, wheel cleaner, rain repellent, car wax spray, leather polish, furniture polish, anti-fog product, fabric waterproofing spray, and rust inhibitor...
November 24, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27889390/safety-assessment-of-4-week-oral-intake-of-proanthocyanidin-rich-grape-seed-extract-in-healthy-subjects
#9
Atsushi Sano
A clinical study was conducted to assess the safety and tolerability of oral doses of proanthocyanidin-rich grape seed extract (GSE) in healthy Japanese adult volunteers. In an open-label, 4-week toxicity test, 29 subjects daily received 1,000, 1,500, or 2,500 mg GSE orally. Serum Fe levels of two subjects in the 2,500 mg GSE group decreased to 61 and 60 μg/100 mL from 205 and 182 μg/100 mL at baseline respectively, at second week of GSE consumption; these values are low but within the normal range for the Japanese population...
November 23, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27887975/human-exposure-to-brominated-flame-retardants-through-the-consumption-of-fish-and-shellfish-in-tarragona-county-catalonia-spain
#10
Laura Trabalón, Lolita Vilavert, José L Domingo, Eva Pocurull, Francesc Borrull, Martí Nadal
The concentrations of 19 brominated flame retardants (BFRs) (8 polybrominated diphenyl ethers (PBDEs), 8 methoxylated PBDEs (MeO-PBDEs) and 3 emerging flame retardants) were determined in 10 species of fish and shellfish widely consumed in Tarragona County (Catalonia, Spain), by pressurized liquid extraction followed by gas chromatography coupled to tandem mass spectrometry. A higher occurrence of PBDEs was found in all the analyzed samples, while MeO-PBDEs were only detected in a few ones and the levels of emerging pollutants were relatively low...
November 23, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27884792/rifm-fragrance-ingredient-safety-assessment-%C3%AE-guaiene-cas-registry-number-88-84-6
#11
A M Api, D Belsito, D Botelho, M Bruze, G A Burton, J Buschmann, P Calow, M L Dagli, W Dekant, A D Fryer, S La Cava, A Lapczynski, D C Liebler, D O'Brien, R Parakhia, A Patel, T M Penning, G Ritacco, J Romine, D Salvito, T W Schultz, I G Sipes, J Wahler
No abstract text is available yet for this article.
November 22, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27884791/immunomodulatory-effect-of-characterized-extract-of-zataria-multiflora-on-th1-th2-and-th17-in-normal-and-th2-polarization-state
#12
Majid Kianmehr, Abdolrahim Rezaei, Mahmoud Hosseini, Mohammad Reza Khazdair, Ramin Rezaee, Vahid Reza Askari, Mohammad Hossein Boskabady
The effect of the extract of Zataria multiflora (Z. multiflora) on IFN-γ, FOXP3, IL-4, TGF-β, and IL-17 gene expression was evaluated in cultured splenocytes obtained from control, nontreated asthma or sensitized mice (group S), Sensetized animals treated with dexamethasone or three concentrations of Z. multiflora extract (200, 400 and 800 μg/ml) (n = 6, for each group). IFN-γ and FOXP3 gene expressions were significantly decreased (P < 0.001 for both cases) but IL-4 (P < 0.001) and IL-17 (P < 0...
November 21, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27884790/altered-spermatogenesis-steroidogenesis-and-suppressed-fertility-in-adult-male-rats-exposed-to-genistein-a-non-steroidal-phytoestrogen-during-embryonic-development
#13
R Meena, Ch Supriya, K Pratap Reddy, P Sreenivasula Reddy
This article focuses on the effects of prenatal exposure to genistein on the mother, her pregnancy and reproductive functions of the male progeny, since these issues have ethological relevance in both animals and humans. Pregnant Wistar rats received i.p. injections of genistein at a dose level of 2, 20 or 100 mg/kg body weight daily from 12(th) to 19(th) day of gestation. Male pups from control and genistein exposed animals were weaned and allowed to develop until 100 days of age; however, when they were 90 days old, twelve males from each group were cohabited with untreated 90-day old females for 8 days...
November 21, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27871982/filipendula-ulmaria-extracts-attenuate-cisplatin-induced-liver-and-kidney-oxidative-stress-in-rats-in-vivo-investigation-and-lc-ms-analysis
#14
Jelena Katanić, Sanja Matić, Eva-Maria Pferschy-Wenzig, Nadine Kretschmer, Tatjana Boroja, Vladimir Mihailović, Vesna Stanković, Nevena Stanković, Milan Mladenović, Snežana Stanić, Mirjana Mihailović, Rudolf Bauer
Filipendula ulmaria, known as meadowsweet, is a perennial herb found in wild and cultivated habitats in Europe and Asia. Usage of F. ulmaria in traditional medicine is based on diuretic, astringent, antirheumatic, and anti-inflammatory properties of this plant. Exposure to cisplatin at a dose of 7.5 mg/kg caused significant increase in serum parameters of liver and kidneys function and tissue oxidative stress markers along with some histopathological changes in liver and kidney tissues of experimental rats, as well as high level of genotoxicity...
November 18, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27871981/oral-exposure-to-diisodecyl-phthalate-aggravates-allergic-dermatitis-by-oxidative-stress-and-enhancement-of-thymic-stromal-lymphopoietin
#15
Shiping Shen, Jinquan Li, Huihui You, Zhuo Wu, Yang Wu, Yun Zhao, Yuqing Zhu, Qing Guo, Xiaoxiao Li, Rui Li, Ping Ma, Xu Yang, Mingqing Chen
Diisodecyl phthalate (DIDP) is extensively used as an environmentally friendly plasticizer. However, little is known about the adverse effects and the underlying mechanisms of DIDP exposure on immunological diseases. We aimed to determine the role and mechanisms of DIDP exposure in allergic contact dermatitis-like skin lesions. We show that oral DIDP exposure can aggravate allergic dermatitis in mice. Moreover, an increase of ROS, total serum IgE and IL-4 levels were concomitant with this deterioration. We detected the expression of Thymic stromal lymphopoietin (TSLP) and the activation of STATs and NF-κB signal pathways...
November 18, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27871980/low-dose-assessment-of-the-carcinogenicity-of-furan-in-male-f344-n-nctr-rats-in-a-2-year-gavage-study
#16
Linda S Von Tungeln, Nigel J Walker, Greg R Olson, Maria C B Mendoza, Robert P Felton, Brett T Thorn, M Matilde Marques, Igor P Pogribny, Daniel R Doerge, Frederick A Beland
Furan is a volatile organic chemical that is a contaminant in many common foods. Furan is hepatocarcinogenic in mice and rats; however, the risk to humans from dietary exposure to furan cannot be estimated accurately because the lowest tested dose of furan in a 2-year bioassay in rats gave nearly a 100% incidence of cholangiocarcinoma. To provide bioassay data that can be used in preparing risk assessments, the carcinogenicity of furan was determined in male F344/N Nctr rats administered 0, 0.02, 0.044, 0.092, 0...
November 18, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27865896/reduced-cytotoxicity-in-pcb-exposed-chinese-hamster-ovary-cho-cells-pretreated-with-vitamin-e
#17
Teuta Murati, Branimir Šimić, Jelka Pleadin, Maja Vukmirović, Marina Miletić, Ksenija Durgo, Jasna Kniewald, Ivana Kmetič
The aim of this study was to evaluate protective effects of vitamin E (50 -150 μM) in ovary cells upon cytotoxic effects induced by two structurally distinct PCB congeners - planar "dioxin-like" PCB 77 and non-planar di-ortho-substituted PCB 153 with an emphasis on identifying differences in the mechanism of vitamin E action depending on the structure of congeners. Application of three bioassays confirmed that PCBs decrease ovarian cell proliferation with slightly profound effects of PCB 77. PCB - induced ROS production and lipid peroxidation were significant for both congeners with also more noticeable effect for PCB 77...
November 16, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27856298/assessing-the-hydrolytic-fate-of-the-masked-mycotoxin-zearalenone-14-glucoside-a-warning-light-for-the-need-to-look-at-the-maskedome
#18
Luca Dellafiora, Gianni Galaverna, Federico Righi, Pietro Cozzini, Chiara Dall'Asta
Masked mycotoxins are plant metabolites of mycotoxins that contaminate food and feed. They pose health concern as the shortage of toxicological data forces the lack of regulation worldwide. The present work investigated the toxicological relevance of the masked mycotoxin zearalenone-14-glucoside. In vitro, it shows a lower toxicity in respect to the parent compound. However, the major risks related to the consumption of masked mycotoxins depend on the possibility to undergo hydrolysis. Therefore, the hydrolysis and further transformation of zearalenone-14-glucoside in bovine blood and blood components (i...
November 14, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27856297/resveratrol-and-cisplatin-in-a-malignant-mesothelioma-cell-model
#19
LETTER
Salvatore Chirumbolo, Geir Bjørklund
No abstract text is available yet for this article.
November 14, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27856296/tyramine-and-histamine-risk-assessment-related-to-consumption-of-dry-fermented-sausages-by-the-spanish-population
#20
M L Latorre-Moratalla, O Comas-Basté, S Bover-Cid, M C Vidal-Carou
Tyramine and histamine are the main dietary bioactive amines related to acute adverse health effects. Dry fermented sausages can easily accumulate high levels of these hazards and are frequently consumed in Spain. The present work aims to assess the exposure to tyramine and histamine from the consumption of dry fermented sausages by the Spanish population and to assess the risk to suffer acute health effects from this exposure. A probabilistic estimation of the exposure to these hazards was derived combining probability distributions of these amines in dry fermented sausages (n = 474) and their consumption by the Spanish population...
November 14, 2016: Food and Chemical Toxicology
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