• The toxicity of thirty para-substituted phenols on Tetrahymena pyriformis was modelled using an original methodology that uses the complex structural information of the compounds. (ejbiotechnology.info)
  • The partial charge distribution by bonds (molecular topology) and space (molecular geometry) interaction proved to be related with the toxicity of para-substituted phenols on Tetrahymena pyriformis . (ejbiotechnology.info)
  • The embedding of the complex information from the structure using MDF methodology can lead to further investigations of the mechanism of chemicals toxicity on Tetrahymena pyriformis . (ejbiotechnology.info)
  • The toxicity of para-substituted phenols on Tetrahymena Pyriformis (a non-pathogenic unicellular protozoan) was studied by many researchers. (ejbiotechnology.info)
  • The main objective of the present study was to characterize the toxicity caused by para-substituted phenols on Tetrahymena pyriformis by using the molecular descriptors family on the structure-activity relationships approach. (ejbiotechnology.info)
  • Toxicity of various compounds has been measured in many studies by their toxic effects against Tetrahymena pyriformis. (elsevierpure.com)
  • Efforts have also been made to use computational quantitative structure-activity relationship (QSAR) and statistical learning methods (SLMs) for predicting Tetrahymena pyriformis toxicity (TPT) at impressive accuracies. (elsevierpure.com)
  • In their study, the NIST team investigated the dietary accumulation, elimination and toxicity of two types of fluorescent quantum dots using a simple, laboratory-based food chain with two microscopic aquatic organisms--Tetrahymena pyriformis, a single-celled ciliate protozoan, and the rotifer Brachionus calyciflorus that preys on it. (sciencedaily.com)
  • 32 min, with the defecation of ca. 3 food vacuoles, induced 'starvation' in T. pyriformis and this resulted in the ciliate exhibiting hyperphagia. (lancs.ac.uk)
  • Tetrahymena are free-living ciliate protozoa that can also switch from commensalistic to pathogenicmodes of survival. (phylogame.org)
  • A metallothionein-like protein was identified from a mono-cellular organism Tetra-hymena pyriformis after incubation of organisms in the medium containing cadmium. (go.jp)
  • Tetrahymena species used as model organisms in biomedical research are T. thermophila and T. pyriformis. (phylogame.org)
  • The blocking of other receptors (GCPRs and TRPV, PPAR, Dopamine, Serotonin and Adenosine), which are known to interact with CBD in other eukaryotic cells, was also tested but none abolished the CBD-induced feeding lag, suggesting that T. pyriformis has few, if any, CBD-interacting receptors that are associated with its feeding mechanism. (lancs.ac.uk)
  • Comprehensive analysis of chemotactic activity of the eukaryotic protozoon Tetrahymena pyriformis and consensus sequences of appearance of amino acids in the primordial soup suggest that there was a good correlation between the chemotactic character of these relative simple organic molecules and their development on the Earth. (wikidoc.org)
  • Legionellales bacteria, like the red chains of Legionella pneumophila seen multiplying here inside the protozoan Tetrahymena pyriformis , may have been invading eukaryotic cells for nearly 2 billion years. (the-scientist.com)
  • Tetrahymena pyriformis is a species of Ciliophora in the family Tetrahymenidae. (wikipedia.org)
  • The estimated 72-hr LL50 value for Tetrahymena pyriformis, one of the most sensitive aquatic microorganism species, is 15.41 mg/L. (europa.eu)
  • T. pyriformis utilised SRs and CLRs for mannose, N-acetylglucosamine (GlcNAc), and N- acetylgalactosamine (GalNAc) for the ingestion of live Synechococcus, which were ingested at higher rates, and gave rise to more food vacuoles, than dead cells/beads. (lancs.ac.uk)
  • Tetrahymena thermophila is an important model organism to evaluate toxic contaminants in an aquatic environment. (biomedcentral.com)
  • Tetrahymena is a widely used model organism in biological research. (phylogame.org)
  • The mechanism behind the action of CBD on T. pyriformis feeding is more complicated than first thought, but with its considerably reduced repertoire of potential targets, compared to human cells, elucidating its targets, and whether these are evolutionary conserved, might be achievable. (lancs.ac.uk)
  • This study aimed to characterised the effect of cannabidiol (CBD) on the feeding behaviour of Tetrahymena pyriformis and to determine its molecular target(s). (lancs.ac.uk)
  • Tetrahymena pyriformis: a tool for toxicological studies. (wikipedia.org)
  • Comparative studies in holotrichous ciliates in the Colpedium-Gloucoma-Leuco phrys-Tetrahymena group. (microbiologyresearch.org)
  • This research was undertaken to determine the effect on growth of Tetrahymena pyriformis of a single stress followed at some later time by a second stress, using temperature change and osmotic pressure change as stress factors. (und.edu)
  • In this article the authors investigate the extent that exposure of non-nutritional food, such as India Ink, to Tetrahymena pyriformis affects the number of vacuole formation. (emerginginvestigators.org)
  • In this study, the authors look into some of the implications of rising carbon dioxide levels by studying the effects of acidic pH on the ability of T. pyriformis to feed by quantifying phagosome formation and motility. (emerginginvestigators.org)
  • The experimental toxicities on Tetrahymena pyriformis ( Tox exp ), expressed as the logarithm of the inverse of the IGC (inhibitory growth concentration) value in mmol/l, were taken from a previously reported research ( Schultz, 1987b ). (ejbiotechnology.info)
  • Such research bears relevance to the migration and distribution patterns of both T. pyriformis and Euglena as they differ in their method of finding sustenance in their native environments. (emerginginvestigators.org)
  • With little previous research done on the exploration of a potential response to photostimulation enacted by T. pyriformis , the authors found that T. pyriformis do not bias in distribution towards areas of light - unlike Euglena , which displayed an increased prevalence in areas of light. (emerginginvestigators.org)
  • Further, the presence of potential competitors improved the survival of Loxocephalus to hundreds of individuals per milliliter in microcosms with Tetrahymena where Loxocephalus would otherwise not be able to tolerate high levels of NP exposure. (onacademic.com)
  • Inhibition of protein synthesis in Tetrahymena pyriformis by histidinol. (libguides.com)
  • We examined the effect of increasing temperature and nutrients on an experimental omnivory module where bacteria are consumed by the protist Tetrahymena pyriformis, and both are in turn consumed by an omnivore protist species, Euplotes sp. (eventscribe.net)
  • Although the ciliate Tetrahymena is a good model for the study of chemotaxis, its profound motility makes it difficult to monitor intracellular calcium (Ca 2+ ) changes induced by chemotactic stimuli. (ewha.ac.kr)
  • In this study, we report a microfluidic-based chemotaxis system generating directional chemotactic gradients under highly viscous conditions, suppressing T. pyriformis motility, and allowing for the stable confocal imaging of changes in intracellular Ca 2+ in the ciliate. (ewha.ac.kr)
  • Collectively, the results indicate that both PLC and PI3K perform pivotal roles in controlling the levels of intracellular Ca 2+ in T. pyriformis during chemotaxis. (ewha.ac.kr)
  • At low evolutionary levels, such as the unicellular eukaryote Tetrahymena pyriformis, histamine is critical for organism survival, playing key roles in phagocytosis, cell growth, glucose metabolism, and chemotaxis ( 7 ). (lww.com)
  • Most wild type Tetrahymena have a macronucleus and a micronucleus. (ucsd.edu)
  • Cre can be expressed in Tetrahymena and localizes to the macronucleus where it induces precise recombination at two loxP sequences in direct orientation in the Tetrahymena macronuclear chromosome. (biomedcentral.com)
  • In this study, the authors look into some of the implications of rising carbon dioxide levels by studying the effects of acidic pH on the ability of T. pyriformis to feed by quantifying phagosome formation and motility. (emerginginvestigators.org)
  • The association of Tetrahymena pyriformis Infusoria with representatives of the genus Francisella in an experiment]. (nih.gov)
  • In this study the structural changes of F. tularensis and T. pyriformis cells, as well as their capacity for survival, were revealed. (nih.gov)
  • 20. Isolation, chemical characterization, and subcellular distribution of 1-O-alkyl-2-acetyl-sn-glycerol in Tetrahymena pyriformis cells. (nih.gov)
  • 1] Quan Wang, Yan Ou, A. Agung Julius, Kim L. Boyer and Min Jun Kim, "Tracking Tetrahymena Pyriformis Cells using Decision Trees", 2012 21st International Conference on Pattern Recognition (ICPR), Pages 1843-1847, 11-15 Nov. 2012. (mathworks.com)
  • A potential mucus precursor in Tetrahymena wild type and mutant cells. (libguides.com)
  • Stress-proteins" are induced in Tetrahymena pyriformis by histidinol but not in mammalian (L-929) cells. (libguides.com)
  • The data on their ultrastructure correlated with the dynamics of the number of both F. tularensis and T. pyriformis: during the whole term of observation the tendency to a slow decrease in the number of F. tularensis was registered with the concentration of T. pyriformis remaining stable. (nih.gov)
  • The system established in this study allows us to express an N-terminal epitope tagged gene from its own endogenous promoter in Tetrahymena . (biomedcentral.com)
  • 15N investigation into the effect of a pollutant on the nitrogen metabolism of Tetrahymena pyriformis as a model for environmental medical research. (nih.gov)
  • Ron A, Horovitz O. Increased RNA synthesis during preconjugation and its effect on pair formation in tetrahymena. (libguides.com)
  • First, all hitherto known ciliate mitochondrial genomes are linear, from 40 kb ( P. tetraurelia ) to 47 kb ( Tetrahymena ) long, and contain some 50 tightly packed genes without introns. (biomedcentral.com)
  • Surprisingly, the codon usage bias in the P. caudatum mitochondrial genome, exemplified by the effective number of codons, is more similar to the distantly related T. pyriformis and other single-celled eukaryotes such as Chlamydomonas , than to the closely related P. tetraurelia . (biomedcentral.com)