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Welcome to the Pubget Medical Subject Headings (MESH) browser. Click on a topic or subtopic below to explore related papers. In the gold box is the most recent paper about the current MESH term, and below are 20 related papers.
Polycyclic Compounds (4):
Recent article
Polycyclic Compounds
Abstract
A study of particulate laden polyaromatic hydrocarbon was conducted at 13 selected locations in a 10 km radial distance of a proposed site for a grass root level industry. Suspended particulate matter samples were continuously monitored for 24 h over a period of 3 months. The Polyaromatic Hydrocarbo...
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PMID: 18974916
PDF is available here.
PDF is available here.
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Abstract
We show that no relevant effects were detected in terms of PAHs contamination in seaweed....
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PMID: 18654728
PDF is available here.
PDF is available here.
Abstract
Freshwater fish Carassius auratus were chosen as experimental animals, the hepatic biochemical responses to medium-term exposure of five PAHs were measured as ethoxyresorufin O-deethylase (EROD) activity (phase I) and glutathione S-transferase (GST) activity (phase II) to assess sub-lethal effects....
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PMID: 19034369
PDF is available here.
PDF is available here.
Abstract
This study was conducted to determine the concentration of 16 polycyclic aromatic hydrocarbons (PAHs) in sandstorm depositions in Beijing, China. The PAH concentrations in 13 samples collected in Beijing ranged from 0.18 to 3.52 microg g(-1). Analysis of the sources of contamination revealed that th...
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PMID: 18773130
PDF is available here.
PDF is available here.
Abstract
A total of 10 surface soil samples representing the entire area of Linfen City were collected and analyzed for the presence of 16 polycyclic aromatic hydrocarbons. The total polycyclic aromatic hydrocarbon concentration ranged from 1.1 to 63.7 microg g(-1). Analysis of the sources of contamination r...
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PMID: 18773129
PDF is available here.
PDF is available here.
Abstract
A method of supercritical fluid extraction (SFE) followed by gas chromatography/mass spectrum was developed for the determination of alkyl polycyclic aromatic hydrocarbons (APAHs) in dustfall. Extraction parameters including pressure, temperature and time were optimized by orthogonal experimental de...
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PMID: 18974912
PDF is available here.
PDF is available here.
Abstract
Lignans are widely distributed in nature. The earliest recorded medicinal use of lignans dated back to over 1000 years ago. Lignan-rich plant products were also active ingredients in Chinese and Japanese folk medicines for the treatment of various diseases. The dried root and stem of this plant are...
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PMID: 19903156
PDF is available here.
PDF is available here.
Abstract
Two new Daphniphyllum alkaloids, 4,21-deacetyl-deoxyyuzurimine (1) and macropodumine L (2), together with the two known related alkaloids, have been isolated from the bark of Daphniphyllum macropodum Miq. The structures of the new compounds were elucidated on the basis of the detailed analysis of sp...
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PMID: 19219728
PDF is available here.
PDF is available here.
Natural Product Research (23)15 2009
Abstract
Schisandra chinensis (Turcz.) Baill has been used as a traditional Chinese medicine in China and Japan. It has been used as an anti-aging drug, a stimulant, a sedative and a tonic drug. Its active components are lignans, including deoxyschisandrin, gamma-schisandrin, schizandrin, gomisin A, and so o...
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PMID: 19809911
PDF is available here.
PDF is available here.
Abstract
Intelligent design: The total synthesis of the cytotoxic (-)-FR182877 relies on 1) tandem Diels-Alder reactions to close rings A-D (see scheme), 2) a palladium-mediated 7-exo-trig reaction, and 3) an iridium-mediated isomerization followed by epimerization and stereoselective reduction.
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PMID: 19226590
PDF is available here.
PDF is available here.
Abstract
The right bicycle: A concise formal synthesis of platencin was based on an efficient oxygen-mediated palladium-catalyzed cycloalkenylation of 1 to form a bicyclo[3.2.1]octane, and a deoxygenative rearrangement of tosylhydrazone 2 to construct the bicyclo[2.2.2]octane 3. The total yield of the core s...
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PMID: 19353600
PDF is available here.
PDF is available here.
Abstract
We discuss the effects of amending reference and contaminated sediments with coal fly ash to reduce the bioavailability and toxicity of a field sediment contaminated with polycyclic aromatic hydrocarbons (PAHs). Six fly ashes and a coconut charcoal were evaluated in 7-d whole sediment toxicity tests...
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PMID: 18717615
PDF is available here.
PDF is available here.
Abstract
Polluted soil sampled from a former coking plant in Lorraine (France) was studied for its genotoxicity and reproductive effects on the Eisenia fetida earthworm. Genotoxicity was investigated by means of the single-cell gel electrophoresis (comet) assay on the coelomocytes of earthworms after 4 and 1...
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PMID: 19031410
PDF is available here.
PDF is available here.
Renal Failure (31)5 2009
Abstract
Balkan endemic nephropathy (BEN) is a chronic tubulointerstitial disease associated with urothelial cancer, which affects people living in the alluvial plains along the tributaries of the Danube River. Challenges of studying BEN using the epidemiological method are multiple. The natural history from...
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PMID: 19839843
PDF is available here.
PDF is available here.
Abstract
We hypothesized that the activation of P2X3,2/3 receptors by endogenous ATP contributes to carrageenan-induced mechanical hyperalgesia and that this contribution is mediated by an indirect and/or a direct sensitization of the primary afferent nociceptors. Co-administration of the selective P2X3,2/3...
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PMID: 19081189
PDF is available here.
PDF is available here.
Analytical Biochemistry (384)1 2009
Abstract
We have characterized in vitro the interaction of the nominal zinc indicators FluoZin-3 and Newport Green with all the cationic transition metals found within cells, Cr, Mn, Fe, Co, and Cu, as well as Ni and Cd, by measuring their dissociation constants. In addition, we have shown how FluoZin-3 can...
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PMID: 18848515
PDF is available here.
PDF is available here.
Abstract
A new approach using aqueous ethyl lactate-modified [S,S]-ethylenediaminedisuccinic acid (EDDS) washing solutions was examined in the laboratory for the simultaneous removal of phenanthrene, pyrene, and Cu from contaminated soils. Ethyl lactate demonstrated greater solubilization efficiency for phen...
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PMID: 19549935
PDF is available here.
PDF is available here.
Aquatic Toxicology (90)4 2008
Abstract
We also investigated mRNA expression levels of two estrogen receptor (ER) subtypes (ERalpha and beta), two VTGs (VTG I and II), pregnane X receptor (PXR), and two cytochromes P450 (CYP) 3As (CYP3A38 and 3A40) in the livers of male medaka treated with AHTN and HHCB at 5, 50 and 500 microg/L. Quantita...
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PMID: 18980782
PDF is available here.
PDF is available here.
Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances & Environmental Engineering (43)14 2008
Abstract
A chronic bioassay was carried out under laboratory conditions using juvenile Solea senegalensis to determine the toxicity of contaminants from an oil spill(Prestige). Also, the repair processes in fish affected by contaminants due to oil exposure were evaluated. Over 30 days individuals were expose...
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PMID: 18988095
PDF is available here.
PDF is available here.
Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances & Environmental Engineering (43)14 2008
Abstract
The results of the quantitative and qualitative analysis of PAHs both in sewage sludge and in supernatants before, during, and after methane fermentation process are presented in this paper. The investigations were carried out under laboratory scale in two series. The sludge samples originated from...
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PMID: 18988097
PDF is available here.
PDF is available here.
Abstract
We (a) present an overview of reported mechanisms that may play a role in these interactions, and (b) compare these reported mechanisms against the results of a suite of experiments performed with organic micro-pollutants in outdoor and indoor microcosms representing shallow lakes dominated either b...
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PMID: 18768209
PDF is available here.
PDF is available here.
Abstract
Magnetically induced current densities have been calculated for a series of hydrocarbons consisting of hexadehydro[12]annulene rings alternatingly fused with benzenes. The calculations show that all molecular rings of the studied molecules sustain paramagnetic ring currents. The new class of molecul...
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PMID: 18989474
PDF is available here.
PDF is available here.
Abstract
Oxidative cyclodehydrogenation of hexakis(4-alkoxyphenyl)benzene produces a quantitative yield of an indenofluorene derivative rather than the expected alkoxy-substituted hexa-peri-hexabenzocoronene (HBC). The structure of the unexpected indenofluorene was established by X-ray crystallography. The m...
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PMID: 18959424
PDF is available here.
PDF is available here.
Journal of Organic Chemistry (73)22 2008
Abstract
The synthesis of a variety of polycyclic thiophenes and benzothiophenes is accomplished via a palladium-catalyzed domino ortho-alkylation/direct arylation reaction. An examination of the intramolecular direct arylation of thiophenes suggests that an electrophilic metalation mechanism may be present....
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PMID: 18928320
PDF is available here.
PDF is available here.
Abstract
An efficient catalytic system has been developed for the synthesis of benzocyclobutenes by C-H activation of methyl groups. The optimal conditions employed a combination of Pd(OAc) 2 and P ( t )Bu 3 as catalyst, K 2CO 3 as the base, and DMF as solvent. A variety of substituted BCB were obtained unde...
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PMID: 18928284
PDF is available here.
PDF is available here.