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Items from 1 to 20 out of 13,921 results

article

An evaluation of the genotoxicity and 90‐day repeated‐dose toxicity of a CBD‐rich hemp oil

Amy Clewell, Róbert Glávits, John R. Endres, Timothy S. Murbach, more

Journal of Applied Toxicology > 43 > 11 > 1719 - 1747

Currently, there is much interest in the sales and study of consumable Cannabis sativa L. products that contain relatively high levels of cannabidiol (CBD) and low levels of Δ‐9‐tetrahydrocannabinol. While there are published safety evaluations for extracts containing low concentrations of CBD, toxicological assessments for those with higher concentrations are still scant in the public domain. In...

article

Rodenticidal potential of bromadiolone and cholecalciferol in synergism against Bandicota bengalensis

Neena Singla, Sukhvir Kaur, Mohammad Javed, N. Singla, more

Crop Protection > 2015 > 72 > Complete > 163-168

The toxicity of standard doses of the rodenticides cholecalciferol and bromadiolone and different combinations of their use at reduced concentrations were compared against lesser bandicoot rats, Bandicota bengalensis. Mature and healthy B. bengalensis were live trapped, acclimatized, weighed and divided into groups. Cereal based baits of standard doses of cholecalciferol (0.075%) and bromadiolone...

article

The influence of salinity and copper exposure on copper accumulation and physiological impairment in the sea anemone, Exaiptasia pallida

Pratikkumar P. Patel, Gretchen K. Bielmyer-Fraser, P.P. Patel, G.K. Bielmyer-Fraser

Comparative Biochemistry and Physiology, Part C > 2015 > 168 > Complete > 39-47

Copper is a common pollutant in many aquatic environments, particularly those surrounding densely populated areas with substantial anthropogenic inputs. These same areas may also experience changes in salinity due to freshwater discharge and tidal influence. Biota that inhabit near-shore coastal environments may be susceptible to both stressors. Although copper is a noted concern in marine environments,...

article

Dissolution of glass wool, rock wool and alkaline earth silicate wool: Morphological and chemical changes in fibers

Antonella Campopiano, Annapaola Cannizzaro, Federica Angelosanto, Maria Luisa Astolfi, more

Regulatory Toxicology and Pharmacology > 2014 > 70 > 1 > 393-406

The behavior of alkaline earth silicate (AES) wool and of other biosoluble wools in saline solution simulating physiological fluids was compared with that of a traditional wool belonging to synthetic vitreous fibers. Morphological and size changes of fibers were studied by scanning electron microscopy (SEM). The elements extracted from fibers were analyzed by inductively coupled plasma atomic emission...

article

Size-, surface- and crystalline structure composition-related effects of titanium dioxide nanoparticles during their aquatic life cycle

Frank Seitz, Ricki R. Rosenfeldt, Sandra Schneider, Ralf Schulz, more

Science of the Total Environment > 2014 > 493 > Complete > 891-897

Nanoparticle toxicity depends amongst others on particle characteristics and nanoparticle behavior during their aquatic life cycle. Aquatic organisms may be exposed to nanoparticle agglomerates of varying size, while lager agglomerates after settling rather affect benthic organisms. In this context, the present study systematically examined the role of particle characteristics, i.e. crystalline structure...

article

Seasonal dynamics of water bloom-forming Microcystis morphospecies and the associated extracellular microcystin concentrations in large, shallow, eutrophic Dianchi Lake

Yanlong Wu, Lin Li, Nanqin Gan, Lingling Zheng, more

Journal of Environmental Sciences > 2014 > 26 > 9 > 1921-1929

The increasing occurrence of Microcystis blooms is of great concern to public health and ecosystem due to the potential hepatotoxic microcystins (MCs) produced by these colonial cyanobacteria. In order to interpret the relationships between variations of Microcystis morphospecies and extracellular MC concentrations, the seasonal dynamics of phytoplankton community composition, MC concentrations, and...

article

Study on particulate polycyclic aromatic hydrocarbons over Bay of Bengal in winter season

Mohit Saxena, D.P. Singh, T. Saud, Ranu Gadi, more

Atmospheric Research > 2014 > 145-146 > Complete > 205-213

Particulate polycyclic aromatic hydrocarbon (PAH) concentration was estimated during Integrated Campaign on Aerosol, Gases and Radiation Budget (ICARB-W) in winter (2008-2009) on board the Sagar Kanya over Bay of Bengal (BOB). The concentration of particulate PAH (Σ ₁ ₁ 6.65+/-2.86ng/m ³ ) over BOB ranged from 0.28ng/m ³ to 1.15ng/m ³ . The concentration of middle...

article

Distribution and molecular phylogeny of the dinoflagellate genus Ostreopsis in Thailand

Wittaya Tawong, Tomohiro Nishimura, Hiroshi Sakanari, Shinya Sato, more

Harmful Algae > 2014 > 37 > Complete > 160-171

The toxic benthic dinoflagellate genus Ostreopsis has been connected to the production of palytoxin and its analogs in many tropical and temperate areas. Although the type species, O. siamensis, was originally described from the Gulf of Thailand in 1901, little is known about the species composition and distribution of the genus Ostreopsis in Thailand. In this study, a total of 64 Ostreopsis strains...

article

Ecotoxicological characteristic of a soil polluted by radioactive elements and heavy metals before and after its bioremediation

Plamen Georgiev, Stoyan Groudev, Irena Spasova, Marina Nicolova, more

Journal of Geochemical Exploration > 2014 > 142 > Complete > 122-129

Cinnamonic soils from southeastern Bulgaria are heavily polluted with radionuclides (uranium, radium) and toxic heavy metals (copper and lead) due to the aerial transportation of fine particles from flotation tailing dumps to the soil surface. As a result of this, the polluted soils are characterized by a slightly alkaline pH (7.82) and positive net neutralization potential (+136.8kgCaCO ₃ ...

article

A comprehensive review on Cd(II) removal from aqueous solution

Debasree Purkayastha, Umesh Mishra, Swarup Biswas, D. Purkayastha, more

Journal of Water Process Engineering > 2014 > 2 > Complete > 105-128

Cadmium(II) is a highly toxic element and can cause a serious threat to living organisms. It is listed as an carcinogen by IARC and US EPA and stringent limits have been set for it in industrial wastewater (discharged into water bodies containing cadmium) as well as in drinking water. Therefore, an efficient and economic process to remove cadmium from aqueous solution is a pressing need. In this paper,...

article

Amines and amine-related compounds in surface waters: A review of sources, concentrations and aquatic toxicity

Amanda E. Poste, Merete Grung, Richard F. Wright, A.E. Poste, more

Science of the Total Environment > 2014 > 481 > Complete > 274-279

This review compiles available information on the concentrations, sources, fate and toxicity of amines and amine-related compounds in surface waters, including rivers, lakes, reservoirs, wetlands and seawater. There is a strong need for this information, especially given the emergence of amine-based post-combustion CO ₂ capture technologies, which may represent a new and significant source...

article

Degradation of drugs in water with advanced oxidation processes and ozone

Maria Quero-Pastor, Alvaro Valenzuela, Jose M. Quiroga, Asuncion Acevedo, more

Journal of Environmental Management > 2014 > 137 > Complete > 197-203

The aim of this paper is to assess the degradation of a mixture of ibuprofen and clofibric acid and to study the mineralization and toxicity following ozone treatment. To this end, a comparison is presented of the experimental results obtained from ozone treatment using atmospheric air as the feed gas (Experiment I, [O ₃ ] = 15 gN/m ³ ), with and without addition of H ₂ O ...

article

In silico prediction of toxicity of non-congeneric industrial chemicals using ensemble learning based modeling approaches

Kunwar P. Singh, Shikha Gupta, K.P. Singh, S. Gupta

Toxicology and Applied Pharmacology > 2014 > 275 > 3 > 198-212

Ensemble learning approach based decision treeboost (DTB) and decision tree forest (DTF) models are introduced in order to establish quantitative structure–toxicity relationship (QSTR) for the prediction of toxicity of 1450 diverse chemicals. Eight non-quantum mechanical molecular descriptors were derived. Structural diversity of the chemicals was evaluated using Tanimoto similarity index. Stochastic...

article

Zonation in the digestive tract of Eisenia fetida: Implications in biomarker measurements for toxicity assessment

A. Irizar, U. Izagirre, O. Diaz de Cerio, I. Marigómez, more

Comparative Biochemistry and Physiology, Part C > 2014 > 160 > Complete > 42-53

Eisenia fetida is a model species for soil health assessment and different biomarkers that detect either the presence of bioavailable contaminants or their biological effect have been developed. These parameters are performed in a target tissue or whole earthworm, without considering the marked zonation in histological organisation, enzyme activities and gene expression pattern existing along the...

article

Traditional knowledge on poisonous plants of Udhampur district of Jammu and Kashmir, India

Harpreet Bhatia, R.K. Manhas, Kewal Kumar, Rani Magotra, more

Journal of Ethnopharmacology > 2014 > 152 > 1 > 207-216

Ethnopharmacological relevance: Poisonous plants comprise the third largest category of poisons known around the world. Other than affecting the humans directly, they are the major cause of economic losses in the livestock industry since the advent of civilisation. Aim of the present study was to collect and systematically document the traditional knowledge of poisonous plants of Udhampur District...

article

Microbiological, biochemical and ecotoxicological evaluation of soils in the area of biochar production in relation to polycyclic aromatic hydrocarbon content

Patryk Oleszczuk, Izabela Jośko, Marcin Kuśmierz, Barbara Futa, more

Geoderma > 2014 > 213 > Complete > 502-511

The objective of the study was the estimation of the effect of polycyclic aromatic hydrocarbons (PAH) on the biological properties of soils in the vicinity of biochar production sites. Assays performed in the soils included the content of PAHs, as well as the microbiological (counts of bacteria and fungi), biochemical (enzymatic activity: dehydrogenases, acidic and alkalic phosphatase, protease and...

article

Effects of nano-TiO2 on the agronomically-relevant Rhizobium–legume symbiosis

Ruimei Fan, Yu Chu Huang, Michael A. Grusak, C.P. Huang, more

Science of the Total Environment > 2014 > 466-467 > Complete > 503-512

The impact of nano-TiO ₂ on Rhizobium–legume symbiosis was studied using garden peas and the compatible bacterial partner Rhizobium leguminosarum bv. viciae 3841. Exposure to nano-TiO ₂ did not affect the germination of peas grown aseptically, nor did it impact the gross root structure. However, nano-TiO ₂ exposure did impact plant development by decreasing the number of secondary...

article

Ozonation of ibuprofen: A degradation and toxicity study

M.J. Quero-Pastor, M.C. Garrido-Perez, A. Acevedo, J.M. Quiroga, more

Science of the Total Environment > 2014 > 466-467 > Complete > 957-964

This paper presents the results obtained in the degradation of ibuprofen by ozonation. This study aims to evaluate the degradation of ibuprofen by ozonation once the operating variables have been optimized, investigating the degradation and degradation efficiency of the compound and assessing the toxic effect of ibuprofen and of the intermediate compounds generated during oxidative treatment. Work...

article

Enzymatic, antimicrobial and toxicity studies of the aqueous extract of Ananas comosus (pineapple) crown leaf

Sangita Dutta, Debasish Bhattacharyya, S. Dutta, D. Bhattacharyya

Journal of Ethnopharmacology > 2013 > 150 > 2 > 451-457

Ethnopharmacological relevance: Various parts of the plant pineapple (Ananas comosus) are used in traditional medicine worldwide for treatment of a number of diseases and disorders. In folk medicine, pineapple leaf extract was used as an antimicrobial, vermicide, purgative, emmenagoogue, abortifacient, anti-oedema and anti-inflammatory agent. Compared to the fruit and stem extracts of pineapple, information...

article

Molecular insights into 4-nitrophenol-induced hepatotoxicity in zebrafish: Transcriptomic, histological and targeted gene expression analyses

Siew Hong Lam, Choong Yong Ung, Mya Myintzu Hlaing, Jing Hu, more

BBA - General Subjects > 2013 > 1830 > 10 > 4778-4789

Background: 4-Nitrophenol (4-NP) is a prioritized environmental pollutant and its toxicity has been investigated using zebrafish, advocated as an alternative toxicological model. However, molecular information of 4-NP induced hepatotoxicity is still limited. This study aimed to obtain molecular insights into 4-NP-induced hepatotoxicity using zebrafish as a model. Methods: Adult male zebrafish were...

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Search results

An evaluation of the genotoxicity and 90‐day repeated‐dose toxicity of a CBD‐rich hemp oil

Rodenticidal potential of bromadiolone and cholecalciferol in synergism against Bandicota bengalensis

The influence of salinity and copper exposure on copper accumulation and physiological impairment in the sea anemone, Exaiptasia pallida

Dissolution of glass wool, rock wool and alkaline earth silicate wool: Morphological and chemical changes in fibers

Size-, surface- and crystalline structure composition-related effects of titanium dioxide nanoparticles during their aquatic life cycle

Seasonal dynamics of water bloom-forming Microcystis morphospecies and the associated extracellular microcystin concentrations in large, shallow, eutrophic Dianchi Lake

Study on particulate polycyclic aromatic hydrocarbons over Bay of Bengal in winter season

Distribution and molecular phylogeny of the dinoflagellate genus Ostreopsis in Thailand

Ecotoxicological characteristic of a soil polluted by radioactive elements and heavy metals before and after its bioremediation

A comprehensive review on Cd(II) removal from aqueous solution

Amines and amine-related compounds in surface waters: A review of sources, concentrations and aquatic toxicity

Degradation of drugs in water with advanced oxidation processes and ozone

In silico prediction of toxicity of non-congeneric industrial chemicals using ensemble learning based modeling approaches

Zonation in the digestive tract of Eisenia fetida: Implications in biomarker measurements for toxicity assessment

Traditional knowledge on poisonous plants of Udhampur district of Jammu and Kashmir, India

Microbiological, biochemical and ecotoxicological evaluation of soils in the area of biochar production in relation to polycyclic aromatic hydrocarbon content

Effects of nano-TiO2 on the agronomically-relevant Rhizobium–legume symbiosis

Ozonation of ibuprofen: A degradation and toxicity study

Enzymatic, antimicrobial and toxicity studies of the aqueous extract of Ananas comosus (pineapple) crown leaf

Molecular insights into 4-nitrophenol-induced hepatotoxicity in zebrafish: Transcriptomic, histological and targeted gene expression analyses

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