Heavy Metals

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Thu, 06/02/2016 - 04:06
Publication date: December 2016 , Volume 70 Author(s): Narottam Saha, M.Z.I. Mollah, M.F. Alam, M. Safiur Rahman To investigate the seasonal contamination levels and to evaluate the potential human health risks, ten heavy metals (As, Cd, Co, Cr, Cu, Mn, Ni, Pb, Se, and Zn) were measured in ten different marine fish species from the Bay of Bengal during four seasons. The metal...
Fri, 05/27/2016 - 01:12
Publication date: Available online 26 May 2016 Author(s): Sweta Samantaray, Joao N. Correia, Mariam Garelnabi, Kerstin Voelz, Robin C. May, Rebecca A. Hall The fungal pathogen Cryptococcus neoformans poses a major threat to immunocompromised patients and is a leading killer of human immunodeficiency virus (HIV)-infected patients worldwide. Cryptococci are known to manipulate host...
Tue, 05/10/2016 - 09:33
Publication date: Available online 10 May 2016 Food and Chemical Toxicology Author(s): Roberto Dragone, Laura Ermilov, Gerardo Grasso, Silvia Maggioni, Alberto Mantovani, Chiara Frazzoli Flaxseeds are both a food ingredient and a natural source of antioxidants (e.g. lignans, PUFAs) and pro-oxidant contaminants (e.g. cadmium): the variable mixture of anti- and pro-oxidant...
Mon, 05/09/2016 - 12:45
Abstract In this study detoxification of 3 Chinese Cd-contaminated cultivars (Jinyou463, Yuchi, and Xiangzaoxian 32) of rice was explored. By separation with an alkaline method, Cd concentrations of the starch isolates were decreased from 0.2769, 0.4037, and 0.5156 mg/kg in starting milled rice to 0.1056, 0.1585, and 0.1923 mg/kg, respectively. However, the Cd concentrations reached up to 2.5905...
Fri, 05/06/2016 - 15:40
Journal of Agricultural and Food ChemistryDOI: 10.1021/acs.jafc.6b01201
Fri, 05/06/2016 - 12:16
Publication date: Available online 5 May 2016 Food and Chemical Toxicology Author(s): Carolyn G. Scrafford, Leila M. Barraj, Joyce S. Tsuji Dietary arsenic exposure and chronic health outcomes are of interest, due in part to increased awareness and data available on inorganic arsenic levels in some foods. Recent concerns regarding levels of inorganic arsenic, the primary form of arsenic...
Wed, 05/04/2016 - 04:32
ScopeReduced expression of tumor suppressor genes (TSG) increases the susceptibility to breast cancer. However, only a small percentage of breast tumors is related to family history and mutational inactivation of TSG. Epigenetics refers to non-mutational events that alter gene expression. Endocrine disruptors found in foods and drinking water may disrupt epigenetically hormonal regulation and...
Thu, 04/28/2016 - 05:35
SUMMARY The natural resistance of Mycobacterium abscessus to most commonly available antibiotics seriously limits chemotherapeutic treatment options, which is particularly challenging for treating cytic fibrosis patients infected with this rapid-growing mycobacterium. New drugs with novel molecular targets are urgently needed against this emerging pathogen. However, the discovery of such new...
Tue, 04/26/2016 - 00:00
Antimicrobial peptides have been accepted as excellent candidates for developing novel antibiotics against drug-resistant bacteria. Recent studies indicate that spider venoms are the source for the identification of novel antimicrobial peptides. In the present study, we isolated and characterized an antibacterial peptide named lycosin-II from the venom of the spider Lycosa singoriensis. It...
Wed, 03/23/2016 - 17:00
Aldo Cavallini, Catia Lippolis, Margherita Vacca, Claudia Nardelli, Alessandra Castegna, Fabio Arnesano, Nicola Carella, Raffaella Depalo Environmental chemicals, such as heavy metals, affect female reproductive function. A biological sensor of the signals of many toxic chemical compounds seems to be the aryl hydrocarbon receptor (AHR). Previous studies demonstrated the environmental of heavy...
Wed, 03/23/2016 - 06:40
Abstract AimsThe aim of this study was to investigate the potential of bioleaching for the treatment of an environmentally hazardous waste, a blast-furnace flue dust designated Theisen sludge. Methods and resultsBioleaching of Theisen sludge was investigated at acidic conditions with A. ferrooxidans in pure and mixed-species culture with Acidiphilium. In shaking-flask experiments bioleaching...
Tue, 03/15/2016 - 12:01
Abstract Microbial biotransformations are major contributors to the arsenic biogeocycle. In parallel with transformations of inorganic arsenic, organoarsenicals pathways have recently been recognized as important components of global cycling of arsenic. The well-characterized pathway of resistance to arsenate is reduction coupled to arsenite efflux. Here we describe a new pathway of arsenate...
Mon, 03/14/2016 - 17:46
Abstract One of the main routes of exposure to inorganic arsenic (i-As) in humans is food, especially rice and rice-based products. There are certain groups of consumers that could be highly exposed to i-As. Maximum levels of i-As have been issued for infants and young children by the European Union, but perhaps other groups are also at risk. Sportspeople could be one of those groups, due to...
Thu, 03/03/2016 - 17:00
Marta I. Sánchez, Inès Pons, Mónica Martínez-Haro, Mark A. Taggart, Thomas Lenormand, Andy J. Green Parasites and pollutants can both affect any living organism, and their interactions can be very important. To date, repeated studies have found that parasites and heavy metals or metalloids both have important negative effects on the health of animals, often in a synergistic manner. Here, we show...
Mon, 02/15/2016 - 11:15
Summary Cells possess stress-activated protein kinase (SAPK) signalling pathways, which are activated practically in response to any cellular insult, regulating responses for survival and adaptation to harmful environmental changes. To understand the function of SAPK pathways in T. atroviride, mutants lacking the MAPKK Pbs2 and the MAPK Tmk3 were analysed under several cellular stresses, and in...
Thu, 01/14/2016 - 01:28
Publication date: Available online 13 January 2016 Author(s): Sooyeon Song, Sejong Oh, Kye-Taek Lim The food and water we consume are often contaminated with a range of chemicals and heavy metals, such as lead, cadmium, arsenic, chromium, and mercury by accumulation through the food chain. Cadmium is known to be one of the major components in cigarette smoke and can cause lesions in...
Wed, 01/06/2016 - 00:00
Trace elements are commonly present as components of metabolic enzymes, hormones and antioxidants in human milk. Previous studies have reported single or few elements in relatively large volumes of human milk using complex, time-consuming and expensive methods involving microwave-assisted acid digestion and extraction using tetramethylammonium hydroxide at various temperatures...
Fri, 12/18/2015 - 09:59
Publication date: Available online 17 December 2015 Food and Chemical Toxicology Author(s): M. Julia Melgar, Julián Alonso, M. Angeles García Mushrooms do not constitute a significant portion of the human diet, but the consumption of wild and cultivated mushrooms has become increasingly in recent years. Some species accumulate high levels of toxic metals, both in unpolluted and polluted...
Wed, 12/16/2015 - 01:20
Poultry litter is commonly used as fertilizer in agriculture. However, this poultry litter must be processed prior to use, since poultry have a large number of pathogenic microorganisms. The aims of this study were to isolate and genotypically and phenotypically characterize Escherichia coli from avian organic fertilizer. Sixty-four E. coli isolates were identified from avian organic fertilizer...
Tue, 12/15/2015 - 16:13
Journal of Agricultural and Food ChemistryDOI: 10.1021/acs.jafc.5b04164
Wed, 12/02/2015 - 19:14
Publication date: Available online 2 December 2015 Author(s): Margarita Andreadou, Emmanouil Liandris, Maria Gazouli, Antonia Mataragka, Ilias Tachtsidis, Nikolaοs Goutas, Dimitrios Vlachodimitropoulos, John Ikonomopoulos Leishmaniosis is a zoonotic disease that affects millions of people especially in resource-poor setting. The development of reliable diagnostic assays that...
Wed, 12/02/2015 - 15:07
Abstract Lead (Pb) is an environmental pollutant that can get entry into human body through contaminated foods, drinks, and inhaled air leading to severe biological consequences, and has been responsible for many deaths worldwide. The objectives of this study were 1st to investigate the modulatory effects of environmentally relevant concentrations of Pb on AhR gene battery, which is controlling...
Wed, 12/02/2015 - 11:49
Journal of Agricultural and Food ChemistryDOI: 10.1021/acs.jafc.5b04337
Thu, 11/19/2015 - 00:00
Abstract Tuberculosis (TB) is a serious and potentially fatal disease caused by Mycobacterium tuberculosis (M. tb). The occurrence of multidrug-resistant (MDR) and extensively drug-resistant (XDR) M. tb is a significant public health concern because most of the anti-TB drugs that have been in use for over 40 years are no longer effective for the treatment of these infections....
Fri, 11/06/2015 - 17:00
Halina B. Röllin, Tahira Kootbodien, Kalavati Channa, Jon Ø. Odland Background The impact of prenatal exposure to cadmium (Cd) on birth outcomes is an area of concern. This study aimed to assess an impact of prenatal Cd exposure on birth outcomes in distinct coastal populations of South Africa. Methods Cadmium was measured in maternal blood (CdB) (n = 641), cord blood and in maternal urine (n =...
Fri, 10/23/2015 - 22:11
Publication date: Available online 23 October 2015 Food and Chemical Toxicology Author(s): Shruti Agrawal, Pradeep Bhatnagar, S.J.S. Flora The present study investigated the toxic effects of individual, combined (binary and ternary) exposure to lead, arsenic and mercury on, (i) oxidative stress (ii) alterations in brain biogenic amines and (iii) tissue metals concentration. Rats were...
Thu, 10/08/2015 - 05:45
Volume 32, Issue 11, November 2015, pages 1867-187410.1080/19440049.2015.1087058Mario Chiari
Tue, 10/06/2015 - 01:31
Abstract BackgroundPangasius is a fish produced on a large scale in Vietnam and exported to many countries. Since the rivers contamination from human activities can affect the safety of this food, fish consumption can be an exposure to potentially toxic elements for humans. Thereby, the aim of this study was to assess arsenic, cadmium, lead, copper and chromium contents by atomic absorption...
Sat, 09/26/2015 - 01:20
Publication date: Available online 25 September 2015 Food and Chemical Toxicology Author(s): German Cano-Sancho, Gemma Perelló, Ana Luisa Maulvault, António Marques, Martí Nadal, José L. Domingo This study was aimed at characterizing the bioaccessibility of arsenic (As), mercury (Hg) and methylmercury (MeHg) in commercial fish and seafood species widely consumed by the population...
Fri, 09/25/2015 - 01:29
Wei Wang, Yan He, Guodong Yu, Baolong Li, Darren W. Sexton, Thomas Wileman, Alexandra A. Roberts, Chris J. Hamilton, Ruoxi Liu, Yimin Chao, Yujuan Shan, Yongping Bao The potential cytotoxicity of cadmium selenide (CdSe) quantum dots (QDs) presents a barrier to their use in biomedical imaging or as diagnostic and therapeutic agents. Sulforaphane (SFN) is a chemoprotective compound derived from...
Thu, 09/17/2015 - 01:23
Publication date: Available online 16 September 2015 Food and Chemical Toxicology Author(s): Ana Djuric, Aida Begic, Borko Gobeljic, Ivana Stevanovic, Ana Pantelic, Goran Zebic, Vera Prokic, Bratislav Dejanovic, Milica Ninkovic, Ivana Stojanovic, Marina Pavlica, Dusan Djukic, Luciano Saso, Dragan Djurdjevic, Milos Pavlovic, Aleksandra Topic, Dragana Vujanovic...
Mon, 09/14/2015 - 06:20
LWT
Publication date: January 2016 Source:LWT - Food Science and Technology, Volume 65 Author(s): Marcello Iriti, Elena Maria Varoni The first detection of melatonin in grapes appeared in 2006 with the questioning title ‘Melatonin content in grape: myth or panacea?’. Then, in a Letter to the Editor of Journal of Pineal Research, the lead journal covering all aspects of physiology,...
Wed, 09/02/2015 - 01:23
The aim of this study was to propose a method for analysis of lead (Pb), cadmium (Cd), mercury (Hg) and arsenic (As) in polypropylene packaging intended for contact with ice cream and migration of these elements using the food itself and 3 % acetic acid as food simulant. Ten commercial samples of ice cream marketed in Campinas-São Paulo (Brazil) were used for the analysis....
Tue, 08/25/2015 - 01:23
Publication date: February 2016 , Volume 60 Author(s): Cristina Galimberti, Ivan Corti, Massimo Cressoni, Vittorio M. Moretti, Simonetta Menotta, Umberto Galli, Donatella Cambiaghi The levels of cadmium (Cd), mercury (Hg) and lead (Pb) were evaluated in 251 samples of fish and fishery products randomly collected between January 2010 and December 2013 from products imported...
Fri, 08/07/2015 - 01:26
Publication date: 1 March 2016 , Volume 194 Author(s): Xuhui Li, Qixing Zhou, Xiaoyin Sun, Wenjie Ren The concentration of nutrient elements is an important quality characteristic of vegetables, and the variation in accumulation among cultivars can provide clues about the mechanism of low accumulation of heavy metals. Pot-culture experiments were arranged under four cadmium (Cd)...
Thu, 08/06/2015 - 01:22
A novel method for sample preparation using an ozone-based process was optimized for the determination of Cd and Pb using electrothermal atomic absorption spectrometry (ET-AAS). Advanced oxidation processes, which involve the in situ generation of highly potent chemical oxidants, are a promising technology to accelerate the oxidation at room temperature and the degradation of organic matter. A...
Mon, 08/03/2015 - 03:20
Trivalent organoarsenic compounds are far more toxic than either pentavalent organoarsenicals or inorganic arsenite. Many microbes methylate inorganic arsenite (As(III)) to more toxic and carcinogenic methylarsenite (MAs(III)). Additionally, monosodium methylarsenate (MSMA or MAs(V)) has been used widely as an herbicide and is reduced by microbial communities to MAs(III). Roxarsone (3-nitro-4-...
Tue, 07/28/2015 - 03:20
In this study, electrothermal atomic absorption spectrometry (ETAAS) was used for determination of lead and cadmium in Macedonian white wines. Wine samples, without prior purification, were directly injected into the ETAAS system, using matrix modifiers for Pb and Cd. The standard addition method was used for quantitative analysis of Pb and Cd content. Reliability of the...
Sun, 07/19/2015 - 06:20
Publication date: September 2015 , Volume 82 Author(s): Mónica Lamas-Maceiras, Esther Rodríguez-Belmonte, Manuel Becerra, M Isabel González-Siso, M Esperanza Cerdán It has been previously reported that Gcr1 differentially controls growth and sugar utilization in Saccharomyces cerevisiae and Kluyveromyces lactis , although the regulatory mechanisms causing activation of glycolytic...
Sat, 07/18/2015 - 01:39
Mansooreh Mazaheri, Ali Akbar Moosavi-Movahedi, Ali Akbar Saboury, Fariba Khodagholi, Fatemeh Shaerzadeh, Nader Sheibani In this study the β-lactoglobulin fibrillation, in the presence or absence of lead ions, aflatoxin M1 and curcumin, was evaluated using ThT fluorescence, Circular dichroism spectroscopy and atomic force microscopy. To investigate the toxicity of the different form of β-Lg...
Wed, 07/01/2015 - 01:25
Voltage-gated sodium (NaV) channels are responsible for propagating action potentials in excitable cells. NaV1.7 plays a crucial role in the human pain signalling pathway and it is an important therapeutic target for treatment of chronic pain. Numerous spider venom peptides have been shown to modulate the activity of NaV channels and these peptides represent a rich source of research tools and...
Thu, 06/18/2015 - 06:20
Cnidarians are the oldest extant lineage of venomous animals. Despite their simple anatomy, they are capable of subduing or repelling prey and predator species that are far more complex and recently evolved. Utilizing specialized penetrating nematocysts, cnidarians inject the nematocyst content or “venom” that initiates toxic and immunological reactions in the envenomated organism. These venoms...

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