• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Ecological Impacts of Pesticides in Agricultural
Ecological Impacts of Pesticides in Agricultural

... the great influence if they are used properly. However, the adverse impacts of these compounds on the environment and ecosystem should not be ignored. The ecological effects of pesticides can be discussed from different points of view. Some of the significant consequences of use of pesticides are si ...
Operation of the interim Prior Informed Consent procedure for
Operation of the interim Prior Informed Consent procedure for

... countries, and which are presently listed in the UNEP-International Register of Potentially Toxic Chemicals (IRPTC) database on Prior Informed Consent. While recognizing that these reports from countries are subject to confirmation, the FAO/UNEP Joint Working Group of Experts on Prior Informed Conse ...
Nanoparticle Toxicity Article Titles
Nanoparticle Toxicity Article Titles

... Metal binding sites in amyloid oligomers: Complexes and mechanisms Aluminium-Maltolate-induced Impairment of Learning, Memory and Hippocampal Long-term Potentiation in Rats Metal-Sulfate Induced Generation of ROS in Human Brain Cells: Detection Using an Isomeric Mixture of 5-and 6-Carboxy-2 ',7 '-D ...
Mixtures of Nickel and Cobalt Chlorides Induce
Mixtures of Nickel and Cobalt Chlorides Induce

... parameter for our model, ft, that we can use in Eqs (3) and (7). In the model we propose, we assume that the toxicity ratio, /3, calculated from cellular assays can be extrapolated to human inhalation exposures. As we have noted earlier, the parameter p can be calculated in three different ways. W e ...
Common Plants Toxic to Dogs and Cats
Common Plants Toxic to Dogs and Cats

... Common Plants Toxic to Dogs and Cats Lilies Toxin: Unknown toxic compound in Lilium and Hemerocallis spp. The entire plant is toxic. Cats are exceptionally susceptible to toxicity. Symptoms: Include vomiting (often contains pieces of lily) and signs associated with kidney failure including disintere ...
Assessing the Human Health Risks of Trichloroethylene: Key
Assessing the Human Health Risks of Trichloroethylene: Key

... Thus, exposure to trichloroethylene at concentrations relevant to the general public is not likely to induce liver cancer in humans. However, it is possible that much higher exposure to trichloroethylene, such as in certain high-risk occupations or in heavily contaminated locales, could result in in ...
Alcohol, Tobacco, and Marijuana
Alcohol, Tobacco, and Marijuana

... may worsen. • An unusual aspect of LSD use is the occurrence of "flashbacks," or hallucinogen persisting perception disorder (HPPD), months to years after LSD use. These are observed most commonly in persons who have used LSD more than 10 times. • During a psychotic episode, danger of suicide and ho ...
Ethanol For The Treatment of Methanol Poisoning Members: 李海仙
Ethanol For The Treatment of Methanol Poisoning Members: 李海仙

... In China, there has been many death cases of methanol poisoning reported. Almost all cases reported are caused by ingestion of fake alcohol (methanol) as a substitution of common alcohol (ethanol). Ethanol is also a highly toxic compound ; however, it has often been used as an antidote for methanol ...
TOXICOLOGY I :
TOXICOLOGY I :

... These adverse effects may occur in many forms, ranging from immediate death to subtle changes not realized until months or years later. They may occur at various levels within the body, such as an organ, a type of cell, or a specific biochemical. Knowledge of how toxic agents damage the body has pro ...
COPPER-SILICON ALLOY CASTINGS SILICON - Multi-Cast
COPPER-SILICON ALLOY CASTINGS SILICON - Multi-Cast

... cobalt, copper, lead, manganese, nickel, silicon and zinc. Also, see the MSDS for the welding rod being used. ...
GENUS: Lobelia
GENUS: Lobelia

... cyanide linked to sugars), acids (oxalic acid), terpenes (substances that contain the branched 5-carbon skeleton of isoprene), phenolics and tanlnins, and essential oils (various steam-volatile, primarily lipophilic plant metabolites stored in special plant organs and percieved by man through the st ...
Monitoring Radiation Effects in the Environment
Monitoring Radiation Effects in the Environment

... In a risk assessment context, there can be considerable challenges in linking observed biomarker responses to individual pollutants within a multi-stressor environment (Mitchelmore & Chipman, 1998). Such stressors could relate to anthropogenic substances in the environment (i.e. chemical contaminant ...
Procedures for Determining an Acceptable Daily Exposure (ADE
Procedures for Determining an Acceptable Daily Exposure (ADE

... Drug Innovator’s website or Drug Innovator’s Clinical Investigator brochure or toxicology summary for a research compound National Library of Medicine literature search engines National Drug Agency websites ...
`Coral Bulker` Fuel Oil Spill on the North Coast of
`Coral Bulker` Fuel Oil Spill on the North Coast of

... the detoxification and excretion of endogenous compounds, xenobiotics, and products of oxidative stress (Clark, 1989). Because these isoenzymes are inducible by a wide range of chemicals, it has been suggested that the levels of GSTs in mussels might be an useful index as an indicator of conjugating ...
FOOD AND TOXICITY: Natural Toxins
FOOD AND TOXICITY: Natural Toxins

... mushrooms (phase one). • Phase two, also called the gastrointestinal phase, involves severe vomiting and abdominal cramps, nausea, and watery diarrhea. • Phase three lasts about 12–24 hours and is characterized by improved clinical symptoms; however, it is also the beginning of liver necrosis. ...
PATHOPHYSIOLOGY AND CLINICAL SEQUELAE OF CHLORINE
PATHOPHYSIOLOGY AND CLINICAL SEQUELAE OF CHLORINE

... broke and a cloud of yellow-green gas was released. He immediately developed shortness of breath and intense eye and throat irritation. On presentation to the hospital he was in moderate respiratory distress, 119/62, 28,110, 100% on 2 L by mask. His eyes were red and tearing and he had diffuse rales ...
Emergence of Harmful Algal Blooms as Health Threats to Marine
Emergence of Harmful Algal Blooms as Health Threats to Marine

... during gestation have a high frequency of abnormalities and poor survival rates (Goldstein et al. 2008; Ramsdell and Zabka 2008; Goldstein et al. 2009). Animals that survive acute DA intoxication have impaired survival and reproductive potential, as these animals experience persistent neurological d ...
Principles and Practices of Toxicology in Public Health
Principles and Practices of Toxicology in Public Health

... – Pesticide use protects the public and our property from species that can produce physical injury to both. – Concerns exist regarding the potential health risks to the public and the environment because of the extent of pesticide use. – Special concern exists about exposures in more susceptible ind ...
sodium n-1-naphthylphthalamate
sodium n-1-naphthylphthalamate

... looking for any abnormalities. Exposure to chemicals with a strong odor often results in such nonspecific symptoms as headache, dizziness, weakness, and nausea. C) IRRITATION 1) Many chemicals cause irritation of the eyes, skin, and respiratory tract. In severe cases respiratory tract irritation can ...
PPT
PPT

... unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent. The slogan 'Press On' has solved and always will solve the problems of the human race. ...
Phenol and Its Toxicity: A Case Report
Phenol and Its Toxicity: A Case Report

... shock was observed which can be ascribed to the combined effect of gastrointestinal bleeding and dehydration. Phenol is depressant of the nervous system, especially the respiratory centre. Respiratory effects are often characterized by an initial increase in respiratory rate followed by a decrease i ...
Common Plants Poisonous to Horses and Livestock in Maryland
Common Plants Poisonous to Horses and Livestock in Maryland

... shorter in height the plant is at wilting, the more concentrated the toxin will be in the plant. The toxin is considered to be safely diluted in plants over 30 inches tall. Once the wilting stage is over, the plants are safe for animals to consume. Signs of Poisoning Symptoms of HCN poisoning from J ...
Risk assessment of substances in combined exposures (mixtures)
Risk assessment of substances in combined exposures (mixtures)

... mixture may be higher than of individual substances. WHO/ICPS designed a general framework for cumulative risk assessment, based on a tiered assessment of both exposure and hazard of substances in the mixture. This framework was generally adopted, including by several EU scientific committees. Follo ...
Contaminants in Eels
Contaminants in Eels

... 1. Flesh is mostly what is consumed by humans 2. Important source of omega 3 fatty acids which: - Decrease triglycerides - Lower blood pressure ...
Drug Identification & Toxicology
Drug Identification & Toxicology

... Toxin – a poisonous substance (usually natural) that is produced by plants, animals, or bacteria that can harm/kill humans.  Botulism – most common poisonous substance known to humans. May be ingested from contaminated food (canned vegetables, raw fish). Can be destroyed by cooking and heating. *** ...
< 1 ... 6 7 8 9 10 11 12 13 14 ... 25 >

Organophosphate poisoning



Organophosphate poisoning results from exposure to organophosphates (OPs), which cause the inhibition of acetylcholinesterase (AChE), leading to the accumulation of acetylcholine (ACh) in the body. Organophosphate poisoning most commonly results from exposure to insecticides or nerve agents. OPs are one of the most common causes of poisoning worldwide, and are frequently intentionally used in suicides in agrarian areas. There are around 1 million OP poisonings per year with several hundred thousand resulting in fatalities annually.Organophosphates inhibit AChE, causing OP poisoning by phosphorylating the serine hydroxyl residue on AChE, which inactivates AChE. AChE is critical for nerve function, so the irreversible blockage of this enzyme, which causes acetylcholine accumulation, results in muscle overstimulation. This causes disturbances across the cholinergic synapses and can only be reactivated very slowly, if at all. Paraoxonase (PON1) is a key enzyme involved in OP pesticides and has been found to be critical in determining an organism's sensitivity to OP exposure.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report