نتایج جستجو برای: acute toxicity tests
تعداد نتایج: 914815 فیلتر نتایج به سال:
An attempt has been made in the present investigation to determine the acute toxicity of hexavalent chromium and its toxicological effects on survival, physiological, hematological and biochemical parameters of the widely consumed Indian major carp, Labeo rohita. Short-term acute toxicity tests were performed adopting renewal bioassay technique (USEPA, 1975) over a period of 96 h, using differe...
Background A smartphone-sized multi-organ-chip has been developed by TissUse. This platform consists of a microcirculation system which contains several fully endothelial-cellcoated microchannels in which organ equivalents are embedded. Briefly, Human 3D organ equivalents such as liver and skin could be maintained functional over 28 days and treated with chemical entities in this microcirculati...
At present, nanoparticles are beginning to influence our lives in many ways and understanding the environmental health and safety aspect of nanomaterials has become a crucial issue. The aim of the work was to assess and compare the acute toxicity of 31 different nanomaterials to fish mature individuals Danio rerio with that to fish early life stages on using evaluation of the 48- and 96- hour L...
Alpha-cypermethrin, a synthetic pyrethroid, is used as an insecticide in agricultural settings and is increasingly replacing organophosphates and carbamates because of lower application rates and lower toxicity to mammals. Because very little is known about the acute and chronic toxicity of this compound for soil-living organisms, the present study investigated acute and sublethal toxicity of a...
Mean sediment quality guideline quotients (mean SQGQs) were developed to represent the presence of chemical mixtures in sediments and are derived by normalizing a suite of chemicals to their respective numerical sediment quality guidelines (SQGs). Mean SQGQs incorporate the number of SQGs exceeded and the degree to which they are exceeded and are used for comparison with observed biological eff...
Teucrium Polium L. (TP) is widely used in traditional medicine of many countries including Iran. There are various reports about pharmacological properties of TP such as calcium antagonist, anti- ulcer, anti – diabetic. There are a few reports about possible toxicological effects of this plant. In the present study we designed to evaluate the subchronic toxicity of Teucrium Polium total extract...
Abstract UV filters in environmental compartments are a source of concern related to their ecotoxicological effects. However, little is known about filters’ toxicity, particularly those released into the environment as mixtures. Acute toxicity nine organic benzophenone-1, benzophenone-2, benzophenone-3, 4-methoxy benzylidene camphor, octocrylene, ethylhexyl methoxycinnamate, 2-ethylhexyl salicy...
Tests for acute oral toxicity, eye irritation, corrosion and dermal toxicity of colloidal silver nanoparticles (AgNPs) were conducted in laboratory animals following OECD guidelines. Oral administration of AgNPs at a limited dose of 5,000 mg/kg produced neither mortality nor acute toxic signs throughout the observation period. Percentage of body weight gain of the mice showed no significant dif...
Earthworm toxicity tests are useful tools for terrestrial risk assessment but require a hierarchy of test designs that differ in effect levels (behavior, sublethal, lethal). In this study, the toxicity of chlorpyrifos contaminated soil on earthworms was assessed. In addition to the acute and chronic tests, an avoidance response test was applied. Earthworms were exposed to sublethal and lethal c...
Essential oil has performed a variety of indirect services used as insect/pest repellent. The present study investigated the acute and subchronic toxicity of eucalyptus oil emulsion in water (EOE). In addition, we conduct safety pharmacology evaluation of EOE to supplement the toxicity tests and provide a basis for a comprehensive understanding of the toxicity of EOE. Acute administration of EO...
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