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https://www.readbyqxmd.com/read/28643083/in-focus-in-hcb
#1
EDITORIAL
Douglas J Taatjes, Jürgen Roth
No abstract text is available yet for this article.
June 22, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28634113/vitamin-d3-supplementation-attenuates-the-early-stage-of-mouse-hepatocarcinogenesis-promoted-by-hexachlorobenzene-fungicide
#2
Guilherme R Romualdo, Renata L Goto, Ana A H Fernandes, Bruno Cogliati, Luis F Barbisan
Hexachlorobezene (HCB), a fungicide widely distributed in the environment, promotes the development of hepatocellular preneoplastic lesions (PNL) and tumors in rodents. In contrast, vitamin D3 (VD3) supplementation presents a potential role for the prevention/treatment of chronic liver diseases. Thus, we investigated whether VD3 supplementation attenuates the early stage of HCB-promoted hepatocarcinogenesis. Female Balb/C mice were injected a single dose of diethylnitrosamine (DEN, 50 mg/kg) at postnatal day 15...
June 17, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28616737/serum-concentrations-of-selected-organochlorine-pesticides-in-a-lebanese-population-and-their-associations-to-sociodemographic-anthropometric-and-dietary-factors-enasb-study
#3
Mireille Harmouche-Karaki, Joseph Matta, Khalil Helou, Yara Mahfouz, Nicole Fakhoury-Sayegh, Jean-François Narbonne
Organochlorine pesticides (OCPs) were banned by the Stockholm Convention many years ago; however, they are still detected in the environment due to their high persistence, their current illegal use, and their import from countries where they have not been banned. We evaluated the serum concentrations of selected OCPs (hexachlorobenzene (HCB), β-hexachlorocyclohexanes (β-HCH), p,p'-dichlorodiphenyltrichloroethane (DDT) and its metabolite p,p'-dichlorodiphenyldichloroethylene (DDE) in a sample of Lebanese adults using gas chromatography coupled to an ion trap mass spectrometer detector...
June 14, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28610570/exploring-infant-feeding-practices-cross-sectional-surveys-of-south-western-sydney-singapore-and-ho-chi-minh-city
#4
Timothy Yong Qun Leow, Andrew Ung, Shelley Qian, Jessie Thanh Nguyen, Yvonne An, Poonam Mudgil, John Whitehall
BACKGROUND: Infant feeding practices are known to influence the child's long-term health. Studies have associated obesity and other diseases with reduced breastfeeding and early introduction of high calorie beverages (HCBs). The rising prevalence of obesity is already a problem in most developed countries, especially Australia, but cultural differences are influential. Our aim is to examine and compare infant feeding practices and educational levels of respondents through questionnaires in three culturally different sites: Campbelltown (South Western Sydney), Australia, Singapore and Ho Chi Minh City, Vietnam (HCMC)...
June 13, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28604907/solvent-dependent-selective-cation-exchange-in-anionic-frameworks-based-on-cobalt-ii-and-triphenylamine-linkers-reactor-dependent-synthesis-and-sorption-properties
#5
Oluseun Akintola, David Hornig, Axel Buchholz, Helmar Görls, Winfried Plass
Two cobalt(ii) coordination polymers with anionic networks of formulae {(Me2NH2)2[CoCl(ntb)]}n (JUMP-2) and {(Me2NH2)2[Co5(ntb)4(H2O)3(Me2NH)]}n (previously reported as MIL-144 by Livage et al., Microporous Mesoporous Mater., 2012, 157, 37) have been obtained via a solvothermal reaction of cobalt chloride and 4,4',4''-nitrilotribenzoic acid (H3ntb) in DMF employing two differently-sized reactors, while using the same absolute amount of reactants. Structure analysis revealed that JUMP-2 crystallized in the monoclinic space group P21/n and displays a two-dimensional (2D) network, which by topological analysis was characterized as a layered 3-connected hcb net...
June 12, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28589288/in-focus-in-hcb
#6
EDITORIAL
Douglas J Taatjes, Jürgen Roth
No abstract text is available yet for this article.
June 6, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28585283/enhanced-crude-oil-biodegradative-potential-of-natural-phytoplankton-associated-hydrocarbonoclastic-bacteria
#7
Haydn Thompson, Angelina Angelova, Bernard Bowler, Martin Jones, Tony Gutierrez
Phytoplankton have been shown to harbour a diversity of hydrocarbonoclastic bacteria (HCB), yet it is not understood how these phytoplankton-associated HCB would respond in the event of an oil spill at sea. Here, we assess the diversity and dynamics of the bacterial community associated with a natural population of marine phytoplankton under oil spill-simulated conditions, and compare it to that of the free-living (non phytoplankton-associated) bacterial community. Whilst the crude oil severely impacted the phytoplankton population and was likely conducive to marine oil snow (MOS) formation, analysis of the MiSeq-derived 16S rRNA data revealed dramatic and differential shifts in the oil-amended communities that included blooms of recognised HCB (e...
June 5, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28570991/from-antarctica-to-the-subtropics-contrasted-geographical-concentrations-of-selenium-mercury-and-persistent-organic-pollutants-in-skua-chicks-catharacta-spp
#8
Alice Carravieri, Yves Cherel, Maud Brault-Favrou, Carine Churlaud, Laurent Peluhet, Pierre Labadie, Hélène Budzinski, Olivier Chastel, Paco Bustamante
Seabirds integrate bioaccumulative contaminants via food intake and have revealed geographical trends of contamination in a variety of ecosystems. Pre-fledging seabird chicks are particularly interesting as bioindicators of chemical contamination, because concentrations in their tissues reflect primarily dietary sources from the local environment. Here we measured 14 trace elements and 18 persistent organic pollutants (POPs) in blood of chicks of skuas that breed in four sites encompassing a large latitudinal range within the southern Indian Ocean, from Antarctica (Adélie Land, south polar skua Catharacta maccormicki), through subantarctic areas (Crozet and Kerguelen Islands, brown skua C...
May 29, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28567035/evaluating-the-detection-of-hydrocarbon-degrading-bacteria-in-16s-rrna-gene-sequencing-surveys
#9
David Berry, Tony Gutierrez
Hydrocarbonoclastic bacteria (HCB) play a key role in the biodegradation of oil hydrocarbons in marine and other environments. A small number of taxa have been identified as obligate HCB, notably the Gammaproteobacterial genera Alcanivorax, Cycloclasticus, Marinobacter, Neptumonas, Oleiphilus, Oleispira, and Thalassolituus, as well as the Alphaproteobacterial genus Thalassospira. Detection of HCB in amplicon-based sequencing surveys relies on high coverage by PCR primers and accurate taxonomic classification...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28546950/genetic-polymorphisms-of-multidrug-and-toxin-extrusion-proteins-mate1-and-mate2-in-south-indian-population
#10
Gerard Marshall Raj, Jayanthi Mathaiyan, Mukta Wyawahare, Katiboina Srinivasa Rao, Rekha Priyadarshini
Introduction: Drug transporters are key determinants of pharmacokinetic and pharmacodynamic profiles of certain drugs. SLC47A1 (MATE1) and SLC47A2 (MATE2) are major efflux transporters involved in the hepatic and renal excretion of many cationic drugs including metformin. Our study was proposed to determine the normative frequencies of the single nucleotide polymorphisms (SNPs) rs2289669 and rs12943590 in the SLC47A1 and SLC47A2 genes, respectively, in South Indian population and also to compare those with those of the HapMap populations...
2017: BioImpacts: BI
https://www.readbyqxmd.com/read/28540444/organochlorine-pesticides-residues-in-human-breast-milk-from-the-middle-governorates-in-jordan-in-2013-2014
#11
Tawfiq M Al Antary, Mahmoud A Alawi, Hussein Estityah, Nizar Haddad
One hundred samples of mother breast milk were gathered from six middle governorates and districts in Jordan in 2013/2014 to monitor Organochlorine pesticides pollutants. The results showed clearly that banned organochlorine pesticides are still detected in the monitored samples in low concentration despite banning of these persistent pollutants in Jordan since 36 years ago. However, the results indicated that 1% of the contaminated samples contained β-HCH, 5% γ-HCH, 3% p,p'-DDD, 2% heptachlor, 45% p,p'-DDE and 3% p,p'-DDT...
May 24, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28525872/levels-and-temporal-trends-of-organochlorine-contaminants-in-mussels-from-spanish-mediterranean-waters
#12
Juan A Campillo, Beatriz Fernández, Víctor García, José Benedicto, Víctor M León
The levels and trends of organochlorine contaminants were determined along the Spanish Mediterranean coast from 2000 to 2013 using mussel, Mytilus galloprovincialis, as bioindicator species. The highest levels of PCBs and DDTs were found at industrial and urban locations, and at areas under the influence of the mouth of major rivers. Dieldrin and t-NNC were commonly detected, while HCHs, aldrin, isodrin, endrin and HCB were at levels not detectable at many areas. Significant declines on the levels of DDTs were observed at most of the areas studied...
May 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/28463822/organochlorine-pesticides-and-polychlorinated-biphenyls-in-human-adipose-tissue-from-northern-tunisia-current-extent-of-contamination-and-contributions-of-socio-demographic-characteristics-and-dietary-habits
#13
Amani Achour, Abdelkader Derouiche, Badreddine Barhoumi, Badreddine Kort, Driss Cherif, Sondes Bouabdallah, Mohsen Sakly, Khémais Ben Rhouma, Soufiane Touil, Mohamed Ridha Driss, Olfa Tebourbi
The aims of the present study were to investigate the current exposure levels of persistent organochlorine compounds (OCs) in adipose tissues intraoperatively collected from 40 patients over 20 years undergoing non-cancer-related surgery residing in Northern region of Tunisia (Bizerte), which constitutes an exemplary case, and examined association between levels of contamination and both socio-demographic characteristics and dietary habits. Concentration of hexachlorobenzene (HCB), hexachlorocyclohexane isomers (α-HCH, β-HCH, γ-HCH and δ-HCH), dichlorodiphenyltrichloroethane isomers (p,p'-DDT and o,p'-DDT) and metabolites (p,p'-DDE, o,p'-DDE, p,p'-DDD and o,p'-DDD) and 12 polychlorinated biphenyls (PCBs) congeners were measured using capillary gas chromatography with electron capture detector...
July 2017: Environmental Research
https://www.readbyqxmd.com/read/28456845/in-focus-in-hcb
#14
EDITORIAL
Douglas J Taatjes, Jürgen Roth
No abstract text is available yet for this article.
April 29, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28438788/associations-between-persistent-organic-pollutants-type-2-diabetes-diabetic-nephropathy-and-mortality
#15
Brian A Grice, Robert G Nelson, Desmond E Williams, William C Knowler, Clinton Mason, Robert L Hanson, Kai McKeever Bullard, Meda E Pavkov
OBJECTIVE: Relationships were examined between persistent organic pollutants (POPs) and incident type 2 diabetes, end-stage renal disease (ESRD) and mortality. METHODS: In a nested case-control study, 300 persons without diabetes had baseline examinations between 1969 and 1974; 149 developed diabetes (cases) and 151 remained non-diabetic (controls) during 8.0 and 23.1 years of follow-up, respectively. POPs were measured at baseline. ORs for diabetes were computed by logistic regression analysis...
April 24, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28421253/levels-and-sources-of-organochlorine-pesticides-in-surface-sediment-from-anhui-reach-of-huaihe-river-china
#16
Chunnian Da, Ke Wu, Jie Jin, Minjun Yu
Twenty-two organochlorine pesticides (OCPs) were investigated in Anhui reach of Huaihe river, China. Seventeen out of 22 OCPs were detected by GC-MS. The mean concentrations of OCPs followed the order: HCHs > DDTs > HCB > chlordanes > endosulfans. Levels of total HCHs and total DDTs ranged from 2.54 to 13.91 ng g(-1) (mean = 7.52 ng g(-1)) and 0.016 to 2.54 ng g(-1) (mean = 0.45 ng g(-1)), respectively. The concentrations of DDTs were lower than those of HCHs. Compared with the other rivers in China, DDTs and HCHs were relatively lower or similar...
June 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28414931/human-adipose-tissue-levels-of-persistent-organic-pollutants-and-metabolic-syndrome-components-combining-a-cross-sectional-with-a-10-year-longitudinal-study-using-a-multi-pollutant-approach
#17
Vicente Mustieles, Mariana F Fernández, Piedad Martin-Olmedo, Beatriz González-Alzaga, Andrés Fontalba-Navas, Russ Hauser, Nicolás Olea, Juan P Arrebola
We aimed to assess the influence of long-term exposure to POPs on the risk of metabolic syndrome, combining a cross-sectional with a 10-year longitudinal follow-up design. Residues of eight POPs were quantified in adipose tissue samples from 387 participants recruited between 2003 and 2004 in Granada province (Spain). The outcome ("metabolically compromised") was defined as having ≥1 diagnosis of type 2 diabetes, hypertension, hypertriglyceridemia, and/or low HDL cholesterol. The cross-sectional analysis was conducted in the initial cohort, while the 10-year longitudinal analysis was conducted in those 154 participants free of any of the so-mentioned metabolic diseases and classified as "metabolically healthy" at recruitment...
April 14, 2017: Environment International
https://www.readbyqxmd.com/read/28395858/association-between-exposure-to-organochlorine-compounds-and-maternal-thyroid-status-role-of-the-iodothyronine-deiodinase-1-gene
#18
Sabrina Llop, Mario Murcia, Mar Alvarez-Pedrerol, Joan O Grimalt, Loreto Santa-Marina, Jordi Julvez, Fernando Goñi-Irigoyen, Mercedes Espada, Ferran Ballester, Marisa Rebagliato, Maria-Jose Lopez-Espinosa
INTRODUCTION: Exposure to organochlorine compounds (OCs) may interfere with thyroid hormone (TH) homeostasis. The disruption of the deiodinase (DIO) enzymes has been proposed as a mechanism of action. AIM: To evaluate the association between exposure to OCs and TH status in pregnant women, as well as to explore the role of genetic variations in the DIO1 and DIO2 genes. METHODS: The study population (n=1128) was composed of pregnant women who participated in the INMA Project (Spain, 2003-2006)...
April 8, 2017: Environment International
https://www.readbyqxmd.com/read/28392239/organohalogenated-contaminants-in-plasma-and-eggs-of-rockhopper-penguins-does-vitellogenin-affect-maternal-transfer
#19
Nina Dehnhard, Veerle L B Jaspers, Laurent Demongin, Evi Van den Steen, Adrian Covaci, Rianne Pinxten, Glenn T Crossin, Petra Quillfeldt, Marcel Eens, Maud Poisbleau
Although many studies have investigated organohalogenated contaminants (OHCs) in yolk, little is known about the mechanisms and timing of transfer of OHCs from the female to the egg. Vitellogenin, a yolk precursor, has been suggested to play a role in this transport. We here report for the first time the temporal changes in OHC and an index of vitellogenin concentrations in female plasma from the pre-laying period to clutch completion in free-living birds: the southern rockhopper penguin (Eudyptes chrysocome chrysocome) breeding in the Falkland/Malvinas Islands...
April 6, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28391396/%C3%A2-in-focus-in-hcb
#20
EDITORIAL
Douglas J Taatjes, Jürgen Roth
No abstract text is available yet for this article.
April 8, 2017: Histochemistry and Cell Biology
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