chemicals Protocols

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols

The Allium test provides a rapid screening procedure for chemicals, pollutants contaminants, etc. which may represent environmental hazards.  Root growth inhibition and adverse effects upon chromosomes provide an indication of likely toxicity. - [Read Allium Test]

Category: Plant Biology Protocols

The Allium test provides a rapid screening procedure for chemicals, pollutants contaminants, etc. which may represent environmental hazards.  Root growth inhibition and adverse effects upon chromosomes provide an indication of likely toxicity. - [Read Allium Test]

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols: Microorganism Cytotoxicity Assays Protocols

The AMES procedure evaluates the mutagenic potential of test chemicals by their effect on five histidine requiring strains of the bacterium, Salmonella typhimurium in the absence and presence of a rat liver metabolising system. - [Read Ames Test]

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols: Liver Toxicity Assays Protocols

This bioassay utilizes cultured Hepa-lclc7 (Hepa-1) mouse hepatoma cells to assess the CYPlA1-inducing potency or cytotoxicity of pure test chemicals or environmental samples.  In the Hepa-l induction test , the CYPlA1-inducing potency of the test sample is detected as increased aryl hydrocarbon hydroxylase (AHH) and 7-ethoxyresorufin O-deethylase (EROD) activities. - [Read CYP1A1-Inducing Potency and Cytotoxicity Test in the HEPA-1 Mouse Hepatoma Cell Line]

Category: Cell Biology and Cell Culture: ES Stem Cell Biology and Culture: Embryotoxic Potential Testing of Chemicals

EMBRYONIC STEM CELL TEST (EST). The embryotoxic potential of chemicals is determined by the evaluation of the inhibition of differentiation of embryonic stem cells (ES) and the inhibition of growth of ES and 3T3 cells. Scientific Information Service - [Read EMBRYONIC STEM CELL TEST (EST)]

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols: Cytotoxicity Assays in Cell Culture Protocols

The cytotoxic effect of chemicals upon cells in culture is measured by cell viability (neutral red uptake) method. - [Read Frame Modified Neutral Red Uptake Cytotoxcity Test]

Category: Signalling Signal Transduction Protocols

This protocol assays inhibition of in vivo binding of [3H]-cAMP to cAR1 by GTPγS. Dictyostelium discoideum respond to extracellular cAMP through the cAMP chemoattractant receptor (cAR1). Binding of cAMP to the G protein-coupled cAR1 is inhibited by the GTP analog GTPγS. Protocol includes information on: Solutions used, BioReagents and Chemicals and Protocol Hints. - [Read GTPγS-Induced Inhibition of cAMP Binding to the cAMP Receptor (cAR1) in Dictyostelium Discoideum]

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols: Liver Toxicity Assays Protocols

This bioassay utilises cultured H-4-II-E rat hepatoma cells to assess the aryl hydrocarbon hydroxylase (AHH) inducing potencies of planar aromatic hydrocarbons and/or contaminated environmental samples.  The response of the cells to pure test chemicals or extracts of mixtures is compared with their response to the standard 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). - [Read H-4-II-E Rat Hepatoma Cell Bioassay Protocol]

Category: Cell Biology and Cell Culture: In Vitro Reconstitution Protocols

Protocol for in vitro splicing reactions in Drosophila KC or HeLa nuclear extracts. Protocol includes: Procedure, Solutions, BioReagents and Chemicals and protocol hints. - [Read In Vitro Splicing Reactions in Drosophila KC or HeLa Nuclear Extracts]

Category: Cell Biology and Cell Culture: In Vitro Reconstitution Protocols

Protocol for in vitro transcription and translation using the coupled reticulocyte lysate system. This protocol is designed to test random samples on a protein gel. Scale up the reactions accordingly. Protocol includes: Procedure, Solutions, BioReagents and Chemicals and protocol hints. - [Read In Vitro Transcription and Translation Using the Coupled Reticulocyte Lysate System]

Category: General Research Protocols and Methods: Laboratory Safety

Laboratory Safety Manual. McGill EHS. Workplace Hazardous Materials Information System (WHMIS), Control of Chemical Hazards, Handling and Storage of Laboratory Chemicals, Fire Safety in the Laboratory, Hazardous Waste Disposal. - [Read Laboratory Safety Manual]

Category: General Research Protocols and Methods

Laboratory Survival Manual. Lab Safety, First AID, Chemicals and Equipment. Vaughn C. Kowahl - [Read Laboratory Survival Manual]

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols: Cytotoxicity Assays in Cell Culture Protocols

Membrane permeability of perfused cell cultures, as determined by the efflux of [3H]-2-deoxy-D-glucose-6phosphate, is used as an indicator of the cytotoxic effect of chemicals. - [Read Membrane Permability as a Measure of Cytotoxcity in Perfused Cell Cultures]

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols: Cytotoxicity Assays in Cell Culture Protocols

The cytotoxic effect of chemicals upon mammalian cells, such as BALB/c 3T3 and HepG2, in culture is measured by highest tolerated dose (HTD), cell viability (Neutral Red) and total cell protein (coomassie blue). - [Read Neutral Red Cytotoxicity Assay Protocol]

Category: Cell Biology and Cell Culture: In Vitro Reconstitution Protocols

Protocol for preparation of KC nuclear extract for in vitro splicing. Protocol makes 3.4 ml of extract for every 4 liter of cells (depending on initial cell concentration). Protocol includes: Procedure, Solutions, BioReagents and Chemicals and protocol hints. - [Read Preparation of KC Nuclear Extract for In Vitro Splicing]

Category: Cell Biology and Cell Culture: In Vitro Reconstitution Protocols

Protocol for the preparation of rabbit reticulocyte lysate cell-free system. Protocol includes information on: Solutions; BioReagents and Chemicals and Protcol Hints. - [Read Preparation of Rabbit Reticulocyte Lysate Cell-Free System Protocol]

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols: Cytotoxicity Assays in Cell Culture Protocols

The cytotoxic effect of chemicals upon cells in culture is measured by the change in total cell protein arising from the inhibition of cell proliferation (Kenacid Blue R dye binding method). - [Read The Frame Cytotoxicity Test Kenacid Blue]

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols

The cytotoxic effect of test chemicals in V79 cell culture can be determined by assessing damage to the plasma membrane as determined by a nucleic acid leakage assay. - [Read V79 Cytotoxicity Test for Membrane Damage]

Category: Pharmacology and Toxicology Protocols: Cytotoxicity Protocols: Microorganism Cytotoxicity Assays Protocols

Accumulation of lipophilic substances, many of which may be environmental chemicals, affects the membrane lipid order and consequently affects the functions of these proteins.  Since, the function of important cellular proteins, such as the H+-ATPase strongly depends upon the integrity of the lipid bilayer, the activity of the H+-ATPase may be used as a sensitive indicator of the effect that a chemical may have on the viability of the cell. - [Read Yeast Plasma Membrane H+ -ATPASE Toxicity Test]